Increase sntp test timeout

The sanitiser pointed out this problem

.github/issue_template.md

@@ -0,0 +1,11 @@
+- My goal is: _describe_
+- My actions were: _describe_
+- My expectation was: _describe_
+- The result I saw: _provide logs or description_
+- My question is: _your question_
+
+# Environment
+
+- mongoose version: _X.Y_
+- OS: _?_
+- Compiler/IDE: _?_

.github/workflows/test.yml

@@ -0,0 +1,51 @@
+name: build
+on: [push, pull_request]
+jobs:
+  linux:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install packages
+      run: sudo apt-get install libmbedtls-dev
+    - name: make
+      run: make test test++ IPV6=0
+    - name: openssl
+      run: make test SSL=OPENSSL IPV6=0
+  examples:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install packages
+      run: sudo apt-get install libmbedtls-dev
+    - name: examples
+      run: make ex
+  macos:
+    runs-on: macos-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install packages
+      run: HOMEBREW_NO_AUTO_UPDATE=1 brew install jq mbedtls openssl
+    - name: make
+      run: make test++ upload-coverage IPV6=0
+    - name: openssl
+      run: make test SSL=OPENSSL IPV6=0 OPENSSL=`echo /usr/local/Cellar/openssl*/*`
+    - name: exports
+      run: make mg_prefix
+  windows:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: vc98
+      run: make vc98
+    - name: vc2017
+      run: make vc2017
+    - name: mingw
+      run: make mingw
+    - name: mingw++
+      run: make mingw++
+  arm:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: arm
+      run: make arm

.travis.yml

@@ -1,23 +0,0 @@
-language: c
-sudo: false
-after_success: bash <(curl -s https://codecov.io/bash)
-install:
-  - if test "$TRAVIS_OS_NAME" = linux; then sudo apt-get install libmbedtls-dev; else brew install jq mbedtls; fi
-os:
-  - linux
-  - osx
-compiler:
-  - clang
-  - gcc
-script: make test test++ ex
-matrix:
-  include:
-    - os: osx
-      compiler: clang
-      script: make mg_prefix
-    - os: linux
-      compiler: msvc98
-      script: make vc98 vc2017
-      sudo: required
-      services:
-        - docker

Makefile

@@ -1,33 +1,39 @@
 SRCS = $(wildcard src/*.c)
 HDRS = $(wildcard src/*.h)
-DEFS ?= -DMG_MAX_HTTP_HEADERS=5 -DMG_ENABLE_LINES -DMG_ENABLE_HTTP_DEBUG_ENDPOINT=1 -DMG_ENABLE_DIRECTORY_LISTING=1
-CFLAGS ?= -W -Wall -Werror -Isrc -I. -O0 -g $(DEFS) $(TFLAGS) $(EXTRA)
+DEFS ?= -DMG_MAX_HTTP_HEADERS=5 -DMG_ENABLE_LINES -DMG_ENABLE_DIRECTORY_LISTING=1 -DMG_ENABLE_SSI=1
+WARN ?= -W -Wall -Werror -Wshadow -Wdouble-promotion -fno-common -Wconversion
+OPTS ?= -O3 -g3
+INCS ?= -Isrc -I.
+CFLAGS ?= $(OPTS) $(WARN) $(INCS) $(DEFS) $(TFLAGS) $(EXTRA)
 SSL ?= MBEDTLS
 CDIR ?= $(realpath $(CURDIR))
 VC98 = docker run --rm -e WINEDEBUG=-all -v $(CDIR):$(CDIR) -w $(CDIR) docker.io/mdashnet/vc98
 VC2017 = docker run --rm -e WINEDEBUG=-all -v $(CDIR):$(CDIR) -w $(CDIR) docker.io/mdashnet/vc2017
+MINGW = docker run --rm -v $(CDIR):$(CDIR) -w $(CDIR) docker.io/mdashnet/mingw
 GCC = docker run --rm -v $(CDIR):$(CDIR) -w $(CDIR) mdashnet/cc2
+ARM = docker run -v $(CDIR):$(CDIR) -w $(CDIR) mdashnet/armgcc
 VCFLAGS = /nologo /W3 /O2 /I. $(DEFS) $(TFLAGS)
 CLANG ?= clang # /usr/local/opt/llvm\@9/bin/clang
+IPV6 ?= 1
 ASAN_OPTIONS ?=
 EXAMPLES := $(wildcard examples/*)
 EXAMPLE_TARGET ?= example
+PREFIX ?= /usr/local
+SOVERSION = 7.2
 .PHONY: ex test
 
 ifeq "$(SSL)" "MBEDTLS"
-MBEDTLS_DIR ?= $(shell brew --cellar mbedtls)
-MBEDTLS_VER ?= $(shell brew info mbedtls --json | jq -j .[0].installed[0].version)
-MBEDTLS ?= $(MBEDTLS_DIR)/$(MBEDTLS_VER)
-CFLAGS += -DMG_ENABLE_MBEDTLS=1 -I$(MBEDTLS)/include -I/usr/include
+MBEDTLS ?= /usr
+CFLAGS  += -DMG_ENABLE_MBEDTLS=1 -I$(MBEDTLS)/include -I/usr/include
 LDFLAGS ?= -L$(MBEDTLS)/lib -lmbedtls -lmbedcrypto -lmbedx509
 endif
 ifeq "$(SSL)" "OPENSSL"
-OPENSSLDIR ?= $(shell "$(brew --cellar openssl)/$(brew info openssl --json | jq -j .[0].installed[0].version)")
-CFLAGS += -DMG_ENABLE_OPENSSL=1 -I$(OPENSSLDIR)/include
-LDFLAGS ?= -L$(OPENSSLDIR)/lib -lssl -lcrypto
+OPENSSL ?= /usr
+CFLAGS  += -DMG_ENABLE_OPENSSL=1 -I$(OPENSSL)/include
+LDFLAGS ?= -L$(OPENSSL)/lib -lssl -lcrypto
 endif
 
-all: mg_prefix test test++ ex vc98 vc2017 linux linux++ infer fuzz
+all: mg_prefix test test++ ex vc98 vc2017 mingw mingw++ linux linux++ infer fuzz
 
 ex:
 	@for X in $(EXAMPLES); do $(MAKE) -C $$X $(EXAMPLE_TARGET); done
@@ -37,19 +43,19 @@ mg_prefix: mongoose.c mongoose.h
 	$(CLANG) mongoose.c $(CFLAGS) -c -o /tmp/x.o && nm /tmp/x.o | grep ' T' | grep -v 'mg_' ; test $$? = 1
 
 # C++ build
-test++: CLANG = g++ -Wno-deprecated -Wno-missing-field-initializers
-test++: unamalgamated
+test++: CLANG = g++
+test++: WARN += -Wno-shadow -Wno-missing-field-initializers -Wno-deprecated
+test++: test
 
 # Make sure we can build from an unamalgamated sources
 unamalgamated: $(SRCS) $(HDRS) Makefile
 	$(CLANG) src/*.c test/unit_test.c $(CFLAGS) $(LDFLAGS) -g -o unit_test
-
 fuzz: mongoose.c mongoose.h Makefile test/fuzz.c
-	$(CLANG) mongoose.c test/fuzz.c $(CFLAGS) -DMG_ENABLE_LOG=0 -fsanitize=fuzzer,signed-integer-overflow,address $(LDFLAGS) -g -o fuzzer
+	$(CLANG) mongoose.c test/fuzz.c $(CFLAGS) -DMG_ENABLE_LINES -DMG_ENABLE_LOG=0 -fsanitize=fuzzer,signed-integer-overflow,address $(LDFLAGS) -g -o fuzzer
 	$(DEBUGGER) ./fuzzer
 
 # make CLANG=/usr/local/opt/llvm\@8/bin/clang ASAN_OPTIONS=detect_leaks=1
-test: CFLAGS += -DMG_ENABLE_IPV6=1 -fsanitize=address#,undefined
+test: CFLAGS += -DMG_ENABLE_IPV6=$(IPV6) -fsanitize=address#,undefined
 test: mongoose.c mongoose.h  Makefile test/unit_test.c
 	$(CLANG) mongoose.c test/unit_test.c $(CFLAGS) -coverage $(LDFLAGS) -g -o unit_test
 	ASAN_OPTIONS=$(ASAN_OPTIONS) $(DEBUGGER) ./unit_test
@@ -58,6 +64,9 @@ coverage: test
 	gcov -l -n *.gcno | sed '/^$$/d' | sed 'N;s/\n/ /'
 	gcov mongoose.gcno >/dev/null
 
+upload-coverage: coverage
+	curl -s https://codecov.io/bash | /bin/bash
+
 infer:
 	infer run -- cc test/unit_test.c -c -W -Wall -Werror -Isrc -I. -O2 -DMG_ENABLE_MBEDTLS=1 -DMG_ENABLE_LINES -I/usr/local/Cellar/mbedtls/2.23.0/include  -DMG_ENABLE_IPV6=1 -g -o /dev/null
 
@@ -66,24 +75,50 @@ vc98: Makefile mongoose.c mongoose.h test/unit_test.c
 	$(VC98) wine cl mongoose.c test/unit_test.c $(VCFLAGS) ws2_32.lib /Fe$@.exe
 	$(VC98) wine $@.exe
 
-vc2017: CFLAGS += -DMG_ENABLE_IPV6=1
+#vc2017: VCFLAGS += -DMG_ENABLE_IPV6=1
 vc2017: Makefile mongoose.c mongoose.h test/unit_test.c
 	$(VC2017) wine64 cl mongoose.c test/unit_test.c $(VCFLAGS) ws2_32.lib /Fe$@.exe
 	$(VC2017) wine64 $@.exe
 
-linux: CFLAGS += -DMG_ENABLE_IPV6=1 -fsanitize=address,undefined
+mingw: Makefile mongoose.c mongoose.h test/unit_test.c
+	$(MINGW) i686-w64-mingw32-gcc mongoose.c test/unit_test.c -W -Wall -Werror -I. $(DEFS) -lwsock32 -o test.exe
+	$(VC98) wine test.exe
+
+mingw++: Makefile mongoose.c mongoose.h test/unit_test.c
+	$(MINGW) i686-w64-mingw32-g++ mongoose.c test/unit_test.c -W -Wall -Werror -I. $(DEFS) -lwsock32 -o test.exe
+  # Note: for some reason, a binary built with mingw g++, fails to run
+
+#linux: CFLAGS += -DMG_ENABLE_IPV6=$(IPV6)
+linux: CFLAGS += -fsanitize=address,undefined
 linux: Makefile mongoose.c mongoose.h test/unit_test.c
 	$(GCC) $(CC) mongoose.c test/unit_test.c $(CFLAGS) $(LDFLAGS) -o unit_test_gcc
 	$(GCC) ./unit_test_gcc
 
-linux++: CC = g++ -Wno-missing-field-initializers
+linux++: CC = g++
+linux++: WARN += -Wno-missing-field-initializers
 linux++: linux
 
+linux-libs: CFLAGS += -fPIC
+linux-libs: mongoose.o
+	$(CC) mongoose.o $(LDFLAGS) -shared -o libmongoose.so.$(SOVERSION)
+	$(AR) rcs libmongoose.a mongoose.o
+
+install: linux-libs
+	install -Dm644 libmongoose.a libmongoose.so.$(SOVERSION) $(DESTDIR)$(PREFIX)/lib
+	ln -s libmongoose.so.$(SOVERSION) $(DESTDIR)$(PREFIX)/lib/libmongoose.so
+	install -Dm644 mongoose.h $(DESTDIR)$(PREFIX)/include/mongoose.h
+
+uninstall:
+	rm -rf $(DESTDIR)$(PREFIX)/lib/libmongoose.a $(DESTDIR)$(PREFIX)/lib/libmongoose.so.$(SOVERSION) $(DESTDIR)$(PREFIX)/include/mongoose.h $(DESTDIR)$(PREFIX)/lib/libmongoose.so
+
+arm: Makefile mongoose.c mongoose.h test/unit_test.c
+	$(ARM) arm-none-eabi-gcc mongoose.c -c -Itest -DMG_ARCH=MG_ARCH_CUSTOM $(OPTS) $(WARN) $(INCS) -DMG_MAX_HTTP_HEADERS=5 -DMG_ENABLE_LINES -DMG_ENABLE_DIRECTORY_LISTING=0 -DMG_ENABLE_SSI=1
+
 mongoose.c: $(SRCS) Makefile
 	(cat src/license.h; echo; echo '#include "mongoose.h"' ; (for F in src/private.h src/*.c ; do echo; echo '#ifdef MG_ENABLE_LINES'; echo "#line 1 \"$$F\""; echo '#endif'; cat $$F | sed -e 's,#include ".*,,'; done))> $@
 
 mongoose.h: $(HDRS) Makefile
-	(cat src/license.h src/version.h ; cat src/arch.h src/arch_*.h src/config.h src/str.h src/log.h src/timer.h src/util.h src/url.h src/iobuf.h src/base64.h src/md5.h src/sha1.h src/event.h src/net.h src/http.h src/tls.h src/ws.h src/sntp.h src/mqtt.h src/dns.h | sed -e 's,#include ".*,,' -e 's,^#pragma once,,')> $@
+	(cat src/license.h src/version.h ; cat src/arch.h src/arch_*.h src/config.h src/str.h src/log.h src/timer.h src/util.h src/url.h src/iobuf.h src/base64.h src/md5.h src/sha1.h src/event.h src/net.h src/http.h src/ssi.h src/tls.h src/ws.h src/sntp.h src/mqtt.h src/dns.h | sed -e 's,#include ".*,,' -e 's,^#pragma once,,'; echo; echo '#ifdef __cplusplus'; echo '}'; echo '#endif'; echo '#endif  // MONGOOSE_H')> $@
 
 clean: EXAMPLE_TARGET = clean
 clean: ex

README.md

@@ -1,78 +1,93 @@
 # Mongoose - Embedded Web Server / Embedded Networking Library
 
-![License: GPLv2](https://img.shields.io/badge/license-GPL_2-green.svg "License")
-[![Build Status](https://travis-ci.org/cesanta/mongoose.svg?branch=master)](https://travis-ci.org/cesanta/mongoose)
+[![License: GPLv2/Commercial](https://img.shields.io/badge/License-GPLv2%20or%20Commercial-green.svg)](https://opensource.org/licenses/gpl-2.0.php)
+[![Build Status]( https://github.com/cesanta/mongoose/workflows/build/badge.svg)](https://github.com/cesanta/mongoose/actions)
 [![Code Coverage](https://codecov.io/gh/cesanta/mongoose/branch/master/graph/badge.svg)](https://codecov.io/gh/cesanta/mongoose)
+[![Fuzzing Status](https://oss-fuzz-build-logs.storage.googleapis.com/badges/mongoose.svg)](https://bugs.chromium.org/p/oss-fuzz/issues/list?sort=-opened&can=1&q=proj:mongoose)
 
 Mongoose is a networking library for C/C++. It implements event-driven
-non-blocking APIs for TCP, UDP, HTTP, WebSocket, MQTT.  It has been designed
-for connecting devices and bringing them online. On the market since 2004, used
-by vast number of open source and commercial products - it even runs on the
+non-blocking APIs for TCP, UDP, HTTP, WebSocket, MQTT.  It is designed for
+connecting devices and bringing them online. On the market since 2004, used by
+vast number of open source and commercial products - it even runs on the
 International Space Station!  Mongoose makes embedded network programming fast,
-robust, and easy.
+robust, and easy. Features include:
 
-- [Download Mongoose Source Code here](https://www.cesanta.com/download.html)
-- [Read Mongoose documentation](https://cesanta.com/docs/)
+- Cross-platform: works on Linux/UNIX, MacOS, Windows, Android, FreeRTOS, etc.
+- Supported embedded architectures: ESP32, NRF52, STM32, NXP, and more
+- Built-in protocols: plain TCP/UDP, HTTP, MQTT, Websocket
+- SSL/TLS support: mbedTLS, OpenSSL or custom (via API)
+- Asynchronous DNS resolver
+- Tiny static and run-time footprint
+- Source code is both ISO C and ISO C++ compliant
+- Works with any network stack with socket API, like LwIP or FreeRTOS-Plus-TCP
+- Very easy to integrate: just copy `mongoose.c` and `mongoose.h` files to your build tree
+- Detailed [documentation](https://cesanta.com/docs/)
 
-Connectivity is vital for software and embedded devices, but there are many
-pitfalls to consider when embedding a web server.  This white paper breaks down
-on the top 9 things to avoid when embedding a web server.
 
-- [Download “9 Things NOT to do when embedding a web server” white paper here](https://www.cesanta.com/whitepaper.html)
+# Commercial use
+- Mongoose is used by hundreds of businesses, from Fortune500 giants like
+  Siemens, Schneider Electric, Broadcom, Bosch, Google, Samsung, Qualcomm, Caterpillar to the small businesses
+- Used to solve a wide range of business needs, like implementing Web UI
+  interface on devices, RESTful API services, telemetry data exchange, remote
+  control for a product, remote software updates, remote monitoring, and others
+- Deployed to hundreds of millions devices in production environment worldwide
+- See [Case Studies](https://cesanta.com/case-studies.html) from our respected
+  customers like Schneider Electric (industrial automation), Broadcom (semiconductors), Schenck Process
+  (industrial engineering), and others
+- See [Testimonials](https://cesanta.com/testimonials.html) from engineers that
+  integrated Mongoose in their commercial products
+- We provide [commercial licensing](https://cesanta.com/licensing.html),
+  [support](https://cesanta.com/support.html), consultancy and integration
+  assistance - don't hesitate to
+  [contact us](https://www.cesanta.com/contact.html)
 
-Looking for a complete IoT solution? Check out
-- [VCON](https://vcon.io) - Arduino compatible MCU modules with built-in firmware OTA updates
-- [Mongoose OS](https://mongoose-os.com) - open source embedded operating system for low-power connected microcontrollers. Secure, designed for commercial Internet of Things products
 
-# Support
-- [Study Mongoose examples](https://github.com/cesanta/mongoose/tree/master/examples)
-- [Support Forum - ask your technical questions here](https://forum.cesanta.com/c/mongoose-library/6)
-- [Commercial licensing and support available](https://www.cesanta.com/licensing.html)
-- [Check out latest releases](https://github.com/cesanta/mongoose/releases)
+# Security
 
-# Features
+We take security seriously:
+1. Mongoose repository runs a
+  [continuous integration test powered by GitHub](https://github.com/cesanta/mongoose/actions),
+  which runs through hundreds of unit tests on every commit to the repository.
+  Our [unit tests](https://github.com/cesanta/mongoose/tree/master/test)
+  are built with modern address sanitizer technologies, which help to find
+  security vulnerabilities early
+2. Mongoose repository is integrated into Google's
+  [oss-fuzz continuous fuzzer](https://bugs.chromium.org/p/oss-fuzz/issues/list?sort=-opened&can=1&q=proj:mongoose)
+  which scans for potential vulnerabilities continuously
+3.  We receive periodic vulnerability reports from the independent security
+  groups like
+  [Cisco Talos](https://www.cisco.com/c/en/us/products/security/talos.html),
+  [Microsoft Security Response Center](https://www.microsoft.com/en-us/msrc),
+  [MITRE Corporation](https://www.mitre.org/),
+  [Compass Security](https://www.compass-security.com/en/) and others.
+  In case of the vulnerability found, we act according to the industry best
+  practice: hold on to the publication, fix the software and notify all our
+  customers that have an appropriate subscription
+4. Some of our customers (for example NASA)
+  have specific security requirements and run independent security audits,
+  of which we get notified and in case of any issue, act similar to (3).
 
-* Cross-platform: works on Linux/UNIX, MacOS, QNX, eCos, Windows, Android,
-  iPhone, FreeRTOS, etc
-* Supported hardware platforms: TI CC3200, TI MSP432, NRF52, STM32, PIC32, ESP8266, ESP32 and more
-* Builtin protocols:
-   - plain TCP, plain UDP, SSL/TLS (over TCP, one-way or two-way)
-   - HTTP client, HTTP server
-   - WebSocket client, WebSocket server
-   - MQTT client
-   - DNS client, async DNS resolver
-* Single-threaded, asynchronous, non-blocking core with simple event-based API
-* Native support for [LWIP embedded TCP/IP stack](https://en.wikipedia.org/wiki/LwIP)
-* Tiny static and run-time footprint
-* Source code is both ISO C and ISO C++ compliant
-* Very easy to integrate: just copy
-  [mongoose.c](https://raw.githubusercontent.com/cesanta/mongoose/master/mongoose.c) and
-  [mongoose.h](https://raw.githubusercontent.com/cesanta/mongoose/master/mongoose.h)
-  files to your build tree
+# Supplement software
 
-# Licensing
+This software is often used together with Mongoose:
+- [mjson](https://github.com/cesanta/mjson) - a JSON parser. Used to implement
+  RESTful APIs that use JSON, or implement data exchange (e.g. over MQTT
+  or Websocket) that use JSON for data encapsulation
+- [elk](https://github.com/cesanta/elk) - a tiny JavaScript interpreter.
+  Used to implement scripting support for customers
 
-Mongoose is released under Commercial and [GNU GPL v.2](http://www.gnu.org/licenses/old-licenses/gpl-2.0.html) open source licenses.
 
-Commercial Projects: [Contact us for commercial license.](https://www.cesanta.com/contact.html)
+# Precompiled web server binary
 
-# Dashboard Example
+We have built a ready-to-go, precompiled web server binary for Windows
+and Mac. It is a great tool for sharing your files or website. It has
+a unique feature - an ability to share your local files via a global URL.
 
-Mongoose is often used to implement device dashboards and real-time
-data exchange over Websocket. Here is a dashboard example that illustrates
-the functionality:
-
-![](http://www.cesanta.com/images/dashboard.png)
-
-[Developing a new product? Contact us today to discuss how Mongoose can help.](https://www.cesanta.com/contact.html)
+Interested? Go to [download](https://mongoose.ws/)
 
 # Contributions
 
 Contributions are welcome! Please follow the guidelines below:
 
 - Sign [Cesanta CLA](https://cesanta.com/cla.html) and send GitHub pull request
-- When making pull requests, please make sure that it has only one commit,
- and imlements/fixes only one piece of functionality
-
-# Looking for a pre-compiled Mongoose web server Windows or Mac binary?
-- [Download pre-compiled Mongoose web server binary.](https://www.cesanta.com/binary.html)
+- Make sure that PRs have only one commit, and deal with one issue only

docs/README.md

@@ -6,24 +6,23 @@
 Mongoose is a networking library for C/C++. It implements an event-driven,
 non-blocking APIs for TCP, UDP, HTTP, WebSocket, MQTT.  It has been designed
 for connecting devices and bringing them online. On the market since 2004, used
-by vast number of open source and commercial products - it even runs on the
-International Space Station!  Mongoose makes embedded network programming fast,
+by a vast number of open source and commercial products - it even runs on the
+International Space Station! Mongoose makes embedded network programming fast,
 robust, and easy.
 
 
 ## Features
 
-* Cross-platform: works on Linux/UNIX, MacOS, QNX, eCos, Windows, Android,
-  iPhone, FreeRTOS, etc
-* Supported hardware platforms: TI CC3200, TI MSP432, NRF52, STM32, PIC32, ESP8266, ESP32 and more
-* Builtin protocols:
+* Works on Linux/UNIX, MacOS, Windows, QNX, eCos, Android and other
+* Works on embedded hardware: STM32, ESP32, NXP, Xilinx, and other
+* Built-in protocols:
    - plain TCP, plain UDP, SSL/TLS (over TCP, one-way or two-way)
    - HTTP client, HTTP server
    - WebSocket client, WebSocket server
-   - MQTT client
+   - MQTT client, MQTT server
    - DNS client, async DNS resolver
 * Single-threaded, asynchronous, non-blocking core with simple event-based API
-* Native support for [LWIP embedded TCP/IP stack](https://en.wikipedia.org/wiki/LwIP)
+* Support for LWIP and FreeRTOS-Plus-TCP stacks
 * Tiny static and run-time footprint
 * Source code is both ISO C and ISO C++ compliant
 * Very easy to integrate: just copy
@@ -50,7 +49,7 @@ Mongoose's internals.
 An application that uses mongoose should follow a standard pattern of
 event-driven application:
 
-1. Declare and initialise an event manager:
+1. Declare and initialize an event manager:
 
   ```c
   struct mg_mgr mgr;
@@ -90,7 +89,7 @@ Each connection has a send and receive buffer:
 - `struct mg_connection::recv` - data received from a peer
 
 When data arrives, Mongoose appends received data to the `recv` and triggers an
-`MG_EV_RECV` event. The user may send data back by calling one of the output
+`MG_EV_READ` event. The user may send data back by calling one of the output
 functions, like `mg_send()` or `mg_printf()`. Output functions append data to
 the `send` buffer.  When Mongoose successfully writes data to the socket, it
 discards data from struct `mg_connection::send` and sends an `MG_EV_SEND`
@@ -106,7 +105,7 @@ what an event handler function looks like:
 ```c
 static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
   switch (ev) {
-    /* Event handler code that defines behavior of the connection */
+    /* Event handler code that defines behaviour of the connection */
     ...
   }
 }
@@ -114,9 +113,9 @@ static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
 
 - `struct mg_connection *c` - a connection that received an event
 - `int ev` - an event number, defined in mongoose.h. For example, when data
-  arrives on an inbound connection, ev would be `MG_EV_RECV`
+  arrives on an inbound connection, ev would be `MG_EV_READ`
 - `void *ev_data` - points to the event-specific data, and it has a different
-  meaning for different events. For example, for an `MG_EV_RECV` event,
+  meaning for different events. For example, for an `MG_EV_READ` event,
   `ev_data`
   is an `int *` pointing to the number of bytes received from a remote
   peer and saved into the `c->recv` IO buffer. The exact meaning of `ev_data` is
@@ -127,24 +126,26 @@ static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
 
 ## Events
 
-Below is the list of events trigged by Mongoose, taken as-is from `mongoose.h`.
+Below is the list of events triggered by Mongoose, taken as-is from `mongoose.h`.
 For each event, a comment describes a meaning of the `ev_data` pointer passed
 to an event handler:
 
 ```c
 enum {
-  MG_EV_ERROR,     // Error                        char *error_message
-  MG_EV_POLL,      // mg_mgr_poll iteration        unsigned long *millis
-  MG_EV_RESOLVE,   // Host name is resolved        NULL
-  MG_EV_CONNECT,   // Connection established       NULL
-  MG_EV_ACCEPT,    // Connection accepted          NULL
-  MG_EV_READ,      // Data received from socket    struct mg_str *
-  MG_EV_WRITE,     // Data written to socket       int *num_bytes_written
-  MG_EV_CLOSE,     // Connection closed            NULL
-  MG_EV_HTTP_MSG,  // HTTP request/response        struct mg_http_message *
-  MG_EV_WS_OPEN,    // Websocket handshake done     NULL
-  MG_EV_WS_MSG,     // Websocket message received   struct mg_ws_message *
-  MG_EV_MQTT_MSG,   // MQTT message                 struct mg_mqtt_message *
+  MG_EV_ERROR,      // Error                        char *error_message
+  MG_EV_POLL,       // mg_mgr_poll iteration        unsigned long *millis
+  MG_EV_RESOLVE,    // Host name is resolved        NULL
+  MG_EV_CONNECT,    // Connection established       NULL
+  MG_EV_ACCEPT,     // Connection accepted          NULL
+  MG_EV_READ,       // Data received from socket    struct mg_str *
+  MG_EV_WRITE,      // Data written to socket       int *num_bytes_written
+  MG_EV_CLOSE,      // Connection closed            NULL
+  MG_EV_HTTP_MSG,   // HTTP request/response        struct mg_http_message *
+  MG_EV_WS_OPEN,    // Websocket handshake done     struct mg_http_message *
+  MG_EV_WS_MSG,     // Websocket msg, text or bin   struct mg_ws_message *
+  MG_EV_WS_CTL,     // Websocket control msg        struct mg_ws_message *
+  MG_EV_MQTT_CMD,   // MQTT low-level command       struct mg_mqtt_message *
+  MG_EV_MQTT_MSG,   // MQTT PUBLISH received        struct mg_mqtt_message *
   MG_EV_MQTT_OPEN,  // MQTT CONNACK received        int *connack_status_code
   MG_EV_SNTP_TIME,  // SNTP time received           struct timeval *
   MG_EV_USER,       // Starting ID for user events
@@ -157,10 +158,10 @@ enum {
 they can be either 0 or 1.  Some flags are set by Mongoose and must be not
 changed by an application code, for example `is_udp` flag tells application if
 that connection is UDP or not.  Some flags can be changed by application, for
-example, `is_drainig` flag, if set by an application, tells Mongoose to send
+example, `is_draining` flag, if set by an application, tells Mongoose to send
 the remaining data to peer, and when everything is sent, close the connection.
 
-User-changeable flags are: `is_hexdumping`, `is_drainig`, `is_closing`.
+User-changeable flags are: `is_hexdumping`, `is_draining`, `is_closing`.
 
 This is taken from `mongoose.h` as-is:
 
@@ -191,41 +192,120 @@ Mongoose source code ships in two files:
 - [mongoose.c](https://github.com/cesanta/mongoose/blob/master/mongoose.c) - implementation
 
 Therefore to integrate Mongoose into an application, simply copy these two
-files to the application's source tree.
+files to the application's source tree. The `mongoose.c` and `mongoose.h` files
+are, actually, an amalgamation - a non-amalgamated sources can be found at
+https://github.com/cesanta/mongoose/tree/master/src
 
-The `mongoose.c` and `mongoose.h` files are, actually, an amalgamation -
-a non-amalgamated sources can be found at https://github.com/cesanta/mongoose/tree/master/src
-
-Mongoose source code uses a bunch of build constants defined at
-https://github.com/cesanta/mongoose/blob/master/src/config.h, together with
-their default values.
-
-In order to change the constant during build time, use the `-D
-<PREPROCESSOR_FLAG>` compiler option. For example, to disable both MQTT,
-compile the application `my_app.c` like this (assumed UNIX system):
+Mongoose have two types of build constants (preprocessor definitions) that
+affect the build: a target architecture, and tunables. In order to set the
+option during build time, use the `-D OPTION` compiler flag:
 
 ```sh
-$ cc my_app.c mongoose.c -D MG_MQTT_ENABLE=0
+$ cc app0.c mongoose.c                                        # Use defaults!
+$ cc app1.c mongoose.c -D MG_ENABLE_IPV6=1                    # Build with IPv6 enabled
+$ cc app2.c mongoose.c -D MG_ARCH=MG_ARCH_FREERTOS_LWIP       # Set architecture
+$ cc app3.c mongoose.c -D MG_ENABLE_FS=0 -D MG_ENABLE_LOG=0   # Multiple options
 ```
 
+The list of supported
+architectures is defined in the
+[arch.h](https://github.com/cesanta/mongoose/blob/master/src/arch.h) header
+file. Normally, there is no need to explicitly specify the architecture.  The
+architecture is guessed during the build, so setting it is not usually required.
+
+| Name | Description |
+| ---- | ----------- |
+|MG_ARCH_UNIX | All UNIX-like systems like Linux, MacOS, FreeBSD, etc |
+|MG_ARCH_WIN32 | Windows systems |
+|MG_ARCH_ESP32 | Espressif's ESP32 |
+|MG_ARCH_ESP8266 | Espressif's ESP8266 |
+|MG_ARCH_FREERTOS_LWIP | All systems with FreeRTOS kernel and LwIP IP stack |
+|MG_ARCH_FREERTOS_TCP | All systems with FreeRTOS kernel and FreeRTOS-Plus-TCP IP stack |
+|MG_ARCH_CUSTOM | A custom architecture, discussed in the next section |
+
+
+The other class of build constants is defined in
+[src/config.h](https://github.com/cesanta/mongoose/blob/master/src/config.h)
+together with their default values. They are tunables that include/exclude
+a certain functionality or change relevant parameters.
+
+
 Here is a list of build constants and their default values:
 
 | Name | Default | Description |
 | ---- | ------- | ----------- |
-|`MG_ENABLE_LWIP` | 0 | Use LWIP low-level API instead of BSD sockets |
-|`MG_ENABLE_SOCKET` | 1 | Use BSD socket low-level API |
-|`MG_ENABLE_MBEDTLS` | 0 | Enable Mbed TLS library |
-|`MG_ENABLE_OPENSSL` | 0 | Enable OpenSSL library |
-|`MG_ENABLE_FS` | 1 | Enable API that use filesystem, like `mg_http_send_file()` |
-|`MG_ENABLE_IPV6` | 0 | Enable IPv6 |
-|`MG_ENABLE_LOG` | 1 | Enable `LOG()` macro |
-|`MG_ENABLE_MD5` | 0 | Use native MD5 implementation |
-|`MG_ENABLE_DIRECTORY_LISTING` | 0 | Enable directory listing for HTTP server |
-|`MG_ENABLE_HTTP_DEBUG_ENDPOINT` | 0 | Enable `/debug/info` debug URI |
-|`MG_ENABLE_SOCKETPAIR` | 0 | Enable `mg_socketpair()` for multi-threading |
-|`MG_IO_SIZE` | 512 | Granularity of the send/recv IO buffer growth |
-|`MG_MAX_RECV_BUF_SIZE` | (3 * 1024 * 1024) | Maximum recv buffer size |
-|`MG_MAX_HTTP_HEADERS` | 40 | Maximum number of HTTP headers |
+|MG_ENABLE_SOCKET | 1 | Use BSD socket low-level API |
+|MG_ENABLE_MBEDTLS | 0 | Enable Mbed TLS library |
+|MG_ENABLE_OPENSSL | 0 | Enable OpenSSL library |
+|MG_ENABLE_FS | 1 | Enable API that use filesystem, like `mg_http_send_file()` |
+|MG_ENABLE_IPV6 | 0 | Enable IPv6 |
+|MG_ENABLE_LOG | 1 | Enable `LOG()` macro |
+|MG_ENABLE_MD5 | 0 | Use native MD5 implementation |
+|MG_ENABLE_DIRECTORY_LISTING | 0 | Enable directory listing for HTTP server |
+|MG_ENABLE_SOCKETPAIR | 0 | Enable `mg_socketpair()` for multi-threading |
+|MG_ENABLE_SSI | 0 | Enable serving SSI files by `mg_http_serve_dir()` |
+|MG_IO_SIZE | 512 | Granularity of the send/recv IO buffer growth |
+|MG_MAX_RECV_BUF_SIZE | (3 * 1024 * 1024) | Maximum recv buffer size |
+|MG_MAX_HTTP_HEADERS | 40 | Maximum number of HTTP headers |
+
+
+NOTE: `MG_IO_SIZE` controls the maximum UDP message size, see
+https://github.com/cesanta/mongoose/issues/907 for details. If application
+uses large UDP messages, increase the `MG_IO_SIZE` limit accordingly.
+
+## Custom build
+
+A custom build should be used for cases which is not covered by the
+existing architecture options. For example, an embedded architecture that
+uses some proprietary RTOS and network stack. In order to build on such
+systems, follow the guideline outlined below:
+
+1. Add `-DMG_ARCH=MG_ARCH_CUSTOM` to your build flags.
+
+2. Create a file called `mongoose_custom.h`, with defines and includes that
+are relevant to your platform. Mongoose uses `bool` type, `MG_DIRSEP` define,
+and optionally other structures like `DIR *` depending on the functionality
+you have enabled - see previous section. Below is an example:
+
+```c
+#include <stdbool.h>            // For bool
+#include <stdarg.h>
+
+#define MG_DIRSEP '/'
+#define MG_INT64_FMT "%lld"
+#define MG_ENABLE_SOCKET 0      // Disable BSD socket API, implement your own
+```
+
+3. This step is optional. If you have disabled BSD socket API, your build is
+going to fail due to several undefined symbols. Create `mongoose_custom.c`
+and implement the following functions (take a look at `src/sock.c` for the
+reference implementation):
+
+```c
+struct mg_connection *mg_connect(struct mg_mgr *mgr, const char *url,
+                                 mg_event_handler_t fn, void *fn_data) {
+  // implement this!
+}
+
+void mg_connect_resolved(struct mg_connection *c) {
+  // implement this!
+}
+
+
+struct mg_connection *mg_listen(struct mg_mgr *mgr, const char *url,
+                                mg_event_handler_t fn, void *fn_data) {
+  // implement this!
+}
+
+void mg_mgr_poll(struct mg_mgr *mgr, int ms) {
+  // implement this!
+}
+
+int mg_send(struct mg_connection *c, const void *buf, size_t len) {
+  // implement this!
+}
+```
+
 
 ## Minimal HTTP server
 
@@ -238,7 +318,8 @@ static const char *s_web_root_dir = ".";
 static const char *s_listening_address = "http://localhost:8000";
 
 static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
-  if (ev == MG_EV_HTTP_MSG) mg_http_serve_dir(c, ev_data, s_web_root_dir);
+  struct mg_http_serve_opts opts = {.root_dir = s_web_root_dir};
+  if (ev == MG_EV_HTTP_MSG) mg_http_serve_dir(c, ev_data, &opts);
 }
 
 int main(int argc, char *argv[]) {
@@ -261,7 +342,7 @@ This example is a simple TCP echo server that listens on port 1234:
 static const char *s_listening_address = "tcp://0.0.0.0:1234";
 
 static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
-  if (ev == MG_EV_RECV) {
+  if (ev == MG_EV_READ) {
     mg_send(c, c->recv.buf, c->recv.len);     // Echo received data back
     mg_iobuf_delete(&c->recv, c->recv.len);   // And discard it
   }
@@ -302,20 +383,21 @@ with some housekeeping information.
 struct mg_connection {
   struct mg_connection *next;  // Linkage in struct mg_mgr :: connections
   struct mg_mgr *mgr;          // Our container
-  struct mg_addr peer;         // Remote peer address
+  struct mg_addr peer;         // Remote address. For listeners, local address
   void *fd;                    // Connected socket, or LWIP data
+  unsigned long id;            // Auto-incrementing unique connection ID
   struct mg_iobuf recv;        // Incoming data
   struct mg_iobuf send;        // Outgoing data
   mg_event_handler_t fn;       // User-specified event handler function
-  void *fn_data;               // User-speficied function parameter
+  void *fn_data;               // User-specified function parameter
   mg_event_handler_t pfn;      // Protocol-specific handler function
   void *pfn_data;              // Protocol-specific function parameter
-  char label[32];              // Arbitrary label
+  char label[50];              // Arbitrary label
   void *tls;                   // TLS specific data
   unsigned is_listening : 1;   // Listening connection
   unsigned is_client : 1;      // Outbound (client) connection
   unsigned is_accepted : 1;    // Accepted (server) connection
-  unsigned is_resolving : 1;   // Non-blocking DNS resolv is in progress
+  unsigned is_resolving : 1;   // Non-blocking DNS resolve is in progress
   unsigned is_connecting : 1;  // Non-blocking connect is in progress
   unsigned is_tls : 1;         // TLS-enabled connection
   unsigned is_tls_hs : 1;      // TLS handshake is in progress
@@ -330,7 +412,7 @@ struct mg_connection {
 ```
 
 A connection - either a listening connection, or an accepted connection,
-or an outbout connection.
+or an outbound connection.
 
 ### mg\_mgr_init()
 
@@ -338,7 +420,7 @@ or an outbout connection.
 void mg_mgr_init(struct mg_mgr *);
 ```
 
-Initialise event manager structure: set a list of active connections to NULL,
+Initialize event manager structure: set a list of active connections to NULL,
 set DNS server and timeout to their default values, etc.
 
 
@@ -349,7 +431,7 @@ void mg_mgr_poll(struct mg_mgr *mgr, int ms);
 ```
 
 Perform a single poll iteration. For each connection in the `mgr->conns` list,
-- See if there is incoming data. If it is, read it into the `c->recv` buffer, send `MG_EV_RECV` event
+- See if there is incoming data. If it is, read it into the `c->recv` buffer, send `MG_EV_READ` event
 - See if there is data in the `c->send` buffer, and write it, send `MG_EV_WRITE` event
 - If a connection is listening, accept an incoming connection if any, and send `MG_EV_ACCEPT` event to it
 - Send `MG_EV_POLL` event
@@ -362,7 +444,7 @@ protocol-specific handler is called before user-specific handler.  It parses
 incoming data and may invoke protocol-specific events like `MG_EV_HTTP_MSG`.
 
 
-### mh\_mgr\_free()
+### mg\_mgr\_free()
 
 ```c
 void mg_mgr_free(struct mg_mgr *mgr);
@@ -395,7 +477,7 @@ struct mg_connection *mg_connect(struct mg_mgr *mgr, const char *url,
                                  mg_event_handler_t fn, void *fn_data);
 ```
 
-Create an outbout connection, append this connection to `mgr->conns`.
+Create an outbound connection, append this connection to `mgr->conns`.
 - `url` - specifies remote IP address/port to connect to, e.g. `http://a.com`
 - `fn` - an event handler function
 - `fn_data` - an arbitrary pointer, which will be passed as `fn_data` when an
@@ -468,21 +550,23 @@ by `buf`, and `len` specifies number of bytes currently stored.
 ### mg\_iobuf\_init()
 
 ```c
-void mg_iobuf_init(struct mg_iobuf *io, size_t size);
+int mg_iobuf_init(struct mg_iobuf *io, size_t size);
 ```
 
-Initialise IO buffer, allocate `size` bytes.
+Initialize IO buffer, allocate `size` bytes. Return 1 on success,
+0 on allocation failure.
 
 
 ### mg\_iobuf\_resize()
 
 ```c
-void mg_iobuf_resize(struct mg_iobuf *io, size_t size);
+int mg_iobuf_resize(struct mg_iobuf *io, size_t size);
 ```
 
 Resize IO buffer, set the new size to `size`. The `io->buf` pointer could
 change after this, for example if the buffer grows. If `size` is 0, then the
 `io->buf` is freed and set to NULL, and both `size` and `len` are set to 0.
+Return 1 on success, 0 on allocation failure.
 
 
 ### mg\_iobuf\_free()
@@ -621,37 +705,56 @@ void mg_http_write_chunk(struct mg_connection *c, const char *buf, size_t len);
 Write a chunk of data in chunked encoding format.
 
 
-### mg\_serve\_dir()
+### mg\_http\_serve\_dir()
 
 ```c
+struct mg_http_serve_opts {
+  const char *root_dir;       // Web root directory, must be non-NULL
+  const char *ssi_pattern;    // SSI file name pattern, e.g. #.shtml
+  const char *extra_headers;  // Extra HTTP headers to add in responses
+};
 void mg_http_serve_dir(struct mg_connection *, struct mg_http_message *hm,
-                       const char *path);
+                       const struct mg_http_serve_opts *opts);
 ```
 
-Serve static files using `path` as a root directory.
+Serve static files according to the given options. Note that in order to
+enable SSI, set a `-DMG_ENABLE_SSI=1` build flag.
 
 
-### mg\_serve\_file()
+### mg\_http\_serve\_file()
 
 ```c
 void mg_http_serve_file(struct mg_connection *, struct mg_http_message *hm,
-                        const char *path, const char *mimetype);
+                        const char *path, const char *mimetype,
+                        const char *extra_headers);
 ```
 
-Serve static file.
+Serve static file. Note that the `extra_headers` must end with `\r\n`. Here
+is an example call:
+
+```c
+mg_http_serve_file(c, hm, "a.png", "image/png", "AA: bb\r\nCC: dd\r\n");
+```
 
 
 ### mg\_http\_reply()
 
 ```c
-void mg_http_reply(struct mg_connection *c, int code, const char *fmt, ...);
+void mg_http_reply(struct mg_connection *c, int status_code, const char *headers,
+                   const char *body_fmt, ...);
 ```
 
-Send simple HTTP response using `printf()` semantic. 
-`code` is HTTP response code, `fmt` is format for the HTTP body.
+Send simple HTTP response using `printf()` semantic. This function formats
+response body according to a `body_fmt`, and automatically appends a correct
+`Content-Length` header. Extra headers could be passed via `headers`
+parameter.
+
+- `status_code` - an HTTP response code
+- `headers` - extra headers, default NULL. If not NULL, must end with `\r\n`
+- `fmt` - a format string for the HTTP body, in a printf semantics
 
 
-### mg\_http\_header()
+### mg\_http\_get\_header()
 
 ```c
 struct mg_str *mg_http_get_header(struct mg_http_message *, const char *name);
@@ -712,8 +815,34 @@ int mg_http_upload(struct mg_connection *, struct mg_http_message *hm,
                    const char *dir);
 ```
 
-Handle file upload. See file upload example.
+Handle file upload. See [file upload example](https://github.com/cesanta/mongoose/tree/master/examples/file-upload).
 
+This function  expects a series of POST requests with file data. POST requests
+should have `name` and `offset` query string parameters set:
+
+```text
+POST /whatever_uri?name=myfile.txt&offset=1234 HTTP/1.0
+Content-Length: 5
+
+hello
+```
+
+- `name` - a mandatory query string parameter, specifies a file name. It it
+  created in the `dir` directory
+- `offset` - an optional parameter, default `0`. If it set to `0`, or omitted,
+  then a file gets truncated before write. Otherwise, the body of
+  the POST request gets appended to the file
+- Server must call `mg_http_upload()` when `/whatever_uri` is hit
+
+So, the expected usage of this API function is this:
+- A client splits a file into small enough chunks, to ensure that a chunk
+  fits into the server's RAM
+- Then, each chunk is POST-ed to the server with using URI like
+  `/some_uri?name=FILENAME&offset=OFFSET`
+- Initial OFFSET is `0`, and subsequent offsets are non-zero
+- Each chunk gets appended to the file
+- When the last chunk is POSTed, upload finishes
+- POST data must not be encoded in any way, it it saved as-is
 
 ### mg\_http\_bauth()
 
@@ -723,6 +852,25 @@ void mg_http_bauth(struct mg_connection *, const char *user, const char *pass);
 
 Write a Basic `Authorization` header to the output buffer.
 
+### mg\_http\_next_\multipart()
+
+```c
+// Parameter for mg_http_next_multipart
+struct mg_http_part {
+  struct mg_str name;      // Form field name
+  struct mg_str filename;  // Filename for file uploads
+  struct mg_str body;      // Part contents
+};
+
+size_t mg_http_next_multipart(struct mg_str body, size_t offset, struct mg_http_part *part);
+```
+
+Parse the multipart chunk in the `body` at a given `offset`. An initial
+`offset` should be 0. Fill up parameters in the provided `part`, which could be
+NULL. Return offset to the next chunk, or 0 if there are no more chunks.
+
+See `form-upload` example for a usage example.
+
 
 ## Websocket
 
@@ -756,10 +904,13 @@ Create client Websocket connection.
 ### mg\_ws\_upgrade()
 
 ```c
-void mg_ws_upgrade(struct mg_connection *, struct mg_http_message *);
+void mg_ws_upgrade(struct mg_connection *, struct mg_http_message *,
+                   const char *fmt, ...);
 ```
 
-Upgrade given HTTP connection to Websocket.
+Upgrade given HTTP connection to Websocket. The `fmt` is a printf-like
+format string for the extra HTTP headers returned to the client in a
+Websocket handshake. Set `fmt` to `NULL` if no extra headers needs to be passed.
 
 
 ### mg\_ws\_send()
@@ -826,24 +977,56 @@ Create client MQTT connection.
 
 ```c
 void mg_mqtt_pub(struct mg_connection *, struct mg_str *topic,
-                 struct mg_str *data);
+                 struct mg_str *data, int qos, bool retain);
 ```
 
-Publish message `data` to the topic `topic`.
-
+Publish message `data` to the topic `topic` with given QoS and retain flag.
 
 ### mg\_mqtt\_sub()
 
 ```c
-void mg_mqtt_sub(struct mg_connection *, struct mg_str *topic);
+void mg_mqtt_sub(struct mg_connection *, struct mg_str *topic, int qos);
 ```
 
-Subscribe to topic `topic`.
+Subscribe to topic `topic` with given QoS.
+
+### mg\_mqtt\_next\_sub()
+
+```c
+size_t mg_mqtt_next_sub(struct mg_mqtt_message *msg, struct mg_str *topic, uint8_t *qos, size_t pos);
+```
+
+Traverse list of subscribed topics. 
+Used to implement MQTT server when `MQTT_CMD_SUBSCRIBE` is received.
+Return next position, or 0 when done. Initial position `pos` should be 4. Example:
+
+```c
+if (ev == MG_EV_MQTT_CMD) {
+  struct mg_mqtt_message *mm = (struct mg_mqtt_message *) ev_data;
+  if (mm->cmd == MQTT_CMD_SUBSCRIBE) {
+    size_t pos = 4;
+    uint8_t qos;
+    struct mg_str topic;
+    while ((pos = mg_mqtt_next_sub(mm, &topic, &qos, pos)) > 0) {
+      LOG(LL_INFO, ("SUB [%.*s]", (int) topic.len, topic.ptr));
+    }
+  }
+}
+```
+
+### mg\_mqtt\_next\_unsub()
+
+```c
+size_t mg_mqtt_next_unsub(struct mg_mqtt_message *msg, struct mg_str *topic, size_t pos);
+```
+
+Same as `mg_mqtt_next_sub()`, but for unsubscribed topics. The difference
+is that there is no QoS in unsubscribe request.
 
 
 ## TLS
 
-### struct mg\_tls\_opts
+### mg\_tls\_init()
 
 ```c
 struct mg_tls_opts {
@@ -851,20 +1034,17 @@ struct mg_tls_opts {
   const char *cert;      // Certificate
   const char *certkey;   // Certificate key
   const char *ciphers;   // Cipher list
-  const char *srvname;   // If not NULL, enables server name verification
+  struct mg_str srvname; // If not empty, enables server name verification
 };
-```
-
-Describes TLS parameters
-
-
-### mg\_tls\_init()
-
-```c
 int mg_tls_init(struct mg_connection *c, struct mg_tls_opts *opts);
 ```
 
-Turns on TLS on a given connection.
+Initialise TLS on a given connection.
+
+IMPORTANT: mbedTLS implementation uses `mg_random` as RNG. The `mg_random`
+is defined as weak, therefore it is possible to override Mongoose's `mg_random`
+with a custom implementation. Just create your own `mg_random` function:
+`void mg_random(void *buf, size_t len)`.
 
 
 ## Timers
@@ -879,7 +1059,7 @@ struct mg_timer {
 #define MG_TIMER_REPEAT 1   // Call function periodically, otherwise run once
 #define MG_TIMER_RUN_NOW 2  // Call immediately when timer is set
   void (*fn)(void *);       // Function to call
-  void *arg;                // Function agrument
+  void *arg;                // Function argument
   unsigned long expire;     // Expiration timestamp in milliseconds
   struct mg_timer *next;    // Linkage in g_timers list
 };
@@ -899,7 +1079,7 @@ Setup a timer.
 - `fn` - function to invoke
 - `fn_data` - function argument
 
-A timer gets initialised and linked into the `g_timers` list:
+A timer gets initialized and linked into the `g_timers` list:
 
 ```c
 struct mg_timer *g_timers;
@@ -928,11 +1108,12 @@ past the timer's expiration time.
 ### mg\_file\_read()
 
 ```c
-char *mg_file_read(const char *path);
+char *mg_file_read(const char *path, size_t *sizep);
 ```
 
 Read file contents into a nul-terminated malloc-ed string. It is a caller's
-responsibility to free() a returned pointer.
+responsibility to free() a returned pointer. If `sizep` is not NULL, it will
+return a file size in bytes.
 
 ### mg\_file\_size()
 
@@ -942,14 +1123,26 @@ size_t mg_file_size(const char *path);
 
 Return file size, or 0 on failure. Empty files also report 0 length.
 
-
 ### mg\_file\_write()
 
 ```c
-int mg_file_write(const char *path, const char *fmt, ...);
+bool mg_file_write(const char *path, const void *buf, size_t len);
 ```
 
-Write into a file `path` using `printf()` semantics. Return number of bytes written.
+Write data to a file, return `true` if written, `false` otherwise.
+The write is atomic, i.e. data gets written to a temporary file first,
+then `rename()-ed` to a destination file name.
+
+
+### mg\_file\_printf()
+
+```c
+int mg_file_printf(const char *path, const char *fmt, ...);
+```
+
+Write into a file `path` using `printf()` semantics.
+Return `true` on success, `false` otherwise. This function prints data to
+a temporary in-memory buffer first, then calls `mg_file_write()`.
 
 
 ### mg\_random()
@@ -973,7 +1166,7 @@ The glob pattern matching rules are as follows:
 - `?` matches any single character 
 - `*` matches zero or more characters except `/`
 - `#` matches zero or more characters
-- any other caracter matches itself
+- any other character matches itself
 
 
 ### mg\_next\_comma\_entry()
@@ -1031,7 +1224,7 @@ char *mg_hex(const void *buf, int len, char *dst);
 
 Hex-encode binary data `buf`, `len` into a buffer `dst` and nul-terminate it.
 The output buffer must be at least 2 x `len` + 1 big.
-Return value: `dst` pointer. The encoded characters are lowecase,
+Return value: `dst` pointer. The encoded characters are lowercase,
 for example `mg_hex("hi", 2, buf)` outputs `6869` and 0 byte, 5 bytes overall.
 
 
@@ -1089,16 +1282,16 @@ Parse 64-bit integer value held by string `s`.
 ### mg\_aton()
 
 ```
-bool mg_aton(const char *s, uint32_t *ipaddr);
+bool mg_aton(struct mg_str str, uint32_t *ipaddr);
 ```
 
-Parse IP address held by `s` and store it in `ipaddr`. Return true on success.
+Parse IP address held by `str` and store it in `ipaddr`. Return true on success.
 
 
 ### mg\_ntoa()
 
 ```c
-char *mg_ntoa(uint32_t ipaddr, char *buf, size_t len);
+char *mg_ntoa(const struct mg_addr *, char *buf, size_t len);
 ```
 
 Stringify IP address `ipaddr` into a buffer `buf`, `len`. Return `buf`.
@@ -1128,3 +1321,12 @@ void mg_usleep(unsigned long usecs);
 ```
 
 Block for a given number of microseconds.
+
+### mg\_crc32()
+
+```c
+uint32_t mg_crc32(uint32_t crc, const uint8_t *buf, size_t len);
+```
+
+Calculate CRC32 checksum for a given buffer. An initial `crc` value should
+be `0`.

examples/captive-dns-server/Makefile

@@ -0,0 +1,11 @@
+PROG ?= example
+CFLAGS ?= -DMG_IO_SIZE=8192 -DMG_ENABLE_LINES
+
+all: $(PROG)
+	$(DEBUGGER) ./$(PROG) $(ARGS)
+
+$(PROG): main.c
+	$(CC) ../../mongoose.c -I../.. -W -Wall $(CFLAGS) -o $(PROG) main.c
+
+clean:
+	rm -rf $(PROG) *.o *.dSYM *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb

examples/captive-dns-server/main.c

@@ -0,0 +1,55 @@
+// Copyright (c) 2020 Cesanta Software Limited
+// All rights reserved
+//
+// Example captive DNS server (captive portal).
+//    1. Run `make`. This builds and starts a server on port 5533
+//    2. Run `dig -t A www.google.com -4 @localhost -p 5533`
+
+#include "mongoose.h"
+
+static const char *s_listen_url = "udp://0.0.0.0:5533";
+
+// DNS answer section. We response with IP 1.2.3.4 - you can change it
+//  in the last 4 bytes of this array
+uint8_t answer[] = {
+    0xc0, 0x0c,          // Point to the name in the DNS question
+    0,    1,             // 2 bytes - record type, A
+    0,    1,             // 2 bytes - address class, INET
+    0,    0,    0, 120,  // 4 bytes - TTL
+    0,    4,             // 2 bytes - address length
+    1,    2,    3, 4     // 4 bytes - IP address
+};
+
+static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
+  if (ev == MG_EV_READ) {
+    struct mg_dns_rr rr;  // Parse first question, offset 12 is header size
+    size_t n = mg_dns_parse_rr(c->recv.buf, c->recv.len, 12, true, &rr);
+    if (n > 0) {
+      char buf[12 + n + sizeof(answer)];
+      struct mg_dns_header *h = (struct mg_dns_header *) buf;
+      memset(buf, 0, sizeof(buf));  // Clear the whole datagram
+      h->txnid = ((struct mg_dns_header *) c->recv.buf)->txnid;  // Copy tnxid
+      h->num_questions = mg_htons(1);  // We use only the 1st question
+      h->num_answers = mg_htons(1);    // And only one answer
+      h->flags = mg_htons(0x8400);     // Authoritative response
+      memcpy(buf + sizeof(*h), c->recv.buf + sizeof(*h), n);  // Copy question
+      memcpy(buf + sizeof(*h) + n, answer, sizeof(answer));   // And answer
+      mg_send(c, buf, sizeof(buf));                           // And send it!
+    }
+    mg_iobuf_delete(&c->recv, c->recv.len);
+  }
+  (void) fn_data;
+  (void) ev_data;
+}
+
+int main(void) {
+  struct mg_mgr mgr;
+
+  mg_log_set("3");                          // Set log level
+  mg_mgr_init(&mgr);                        // Initialise event manager
+  mg_listen(&mgr, s_listen_url, fn, NULL);  // Start DNS server
+  for (;;) mg_mgr_poll(&mgr, 1000);         // Event loop
+  mg_mgr_free(&mgr);
+
+  return 0;
+}

examples/complete/README.md

@@ -0,0 +1,34 @@
+# A complete device dashboard
+
+This example is a demonstration of how Mongoose Library could be integrated
+into an embedded device and provide a complete device dashbord with the
+following features:
+
+- Multiple logins with different permissions (admin and user)
+- Login screen for non-authenticated connections
+- A [preact](https://preactjs.com/)-based dashboard with multiple pages
+- Internal variables
+- A form that changes those variables
+- All changes are propagates to all connected clients
+- Live log stream
+- Live video stream
+
+
+In essense, this example is a combination of several other examples
+pulled together (multiple-logins, dashboard, live-log, video-stream).
+
+# Screenshots
+
+This is a login screen that prompts for user/password
+
+![](screenshots/login.png)
+
+# Main dashboard
+
+A main dashboard page shows internal data, live video stream, and a form
+
+![](screenshots/dashboard.png)
+
+A live log page shows live log stream coming from device
+
+![](screenshots/logs.png)

examples/complete/main.c

@@ -119,7 +119,7 @@ static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
           "Pragma: no-cache\r\nExpires: Thu, 01 Dec 1994 16:00:00 GMT\r\n"
           "Content-Type: multipart/x-mixed-replace; boundary=--foo\r\n\r\n");
     } else if (mg_http_match_uri(hm, "/api/log/static")) {
-      mg_http_serve_file(c, hm, "log.txt", "text/plain");
+      mg_http_serve_file(c, hm, "log.txt", "text/plain", "");
     } else if (mg_http_match_uri(hm, "/api/log/live")) {
       c->label[0] = 'L';  // Mark that connection as live log listener
       mg_printf(c, "HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n");
@@ -129,7 +129,8 @@ static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
                            u->token);
       mg_http_printf_chunk(c, "");
     } else {
-      mg_http_serve_dir(c, ev_data, "web_root");
+      struct mg_http_serve_opts opts = {.root_dir = "web_root"};
+      mg_http_serve_dir(c, ev_data, &opts);
     }
   }
 }
@@ -142,11 +143,11 @@ static void broadcast_mjpeg_frame(struct mg_mgr *mgr) {
   size_t nfiles = sizeof(files) / sizeof(files[0]);
   static size_t i;
   const char *path = files[i++ % nfiles];
-  size_t size = mg_file_size(path);
-  char *data = mg_file_read(path);  // Read next file
+  size_t size = 0;
+  char *data = mg_file_read(path, &size);  // Read next file
   struct mg_connection *c;
   for (c = mgr->conns; c != NULL; c = c->next) {
-    if (c->label[0] != 'S') continue;      // Skip non-stream connections
+    if (c->label[0] != 'S') continue;         // Skip non-stream connections
     if (data == NULL || size == 0) continue;  // Skip on file read error
     mg_printf(c,
               "--foo\r\nContent-Type: image/jpeg\r\n"

examples/complete/web_root/axios.min.js

@@ -1,9 +1,3 @@
-/* axios v0.19.0-beta.1 | (c) 2018 by Matt Zabriskie */
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examples/dashboard/main.c

@@ -66,7 +66,8 @@ static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
       c->label[0] = 'W';  // Mark ourselves as a config watcher
       mg_printf(c, "HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n");
     } else {
-      mg_http_serve_dir(c, ev_data, "web_root");
+      struct mg_http_serve_opts opts = {.root_dir = "web_root"};
+      mg_http_serve_dir(c, ev_data, &opts);
     }
   }
 }

examples/dashboard/web_root/axios.min.js

@@ -1,9 +1,3 @@
-/* axios v0.19.0-beta.1 | (c) 2018 by Matt Zabriskie */
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-	 *
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+!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define([],t):"object"==typeof exports?exports.axios=t():e.axios=t()}(this,function(){return function(e){function t(r){if(n[r])return n[r].exports;var o=n[r]={exports:{},id:r,loaded:!1};return e[r].call(o.exports,o,o.exports,t),o.loaded=!0,o.exports}var n={};return t.m=e,t.c=n,t.p="",t(0)}([function(e,t,n){e.exports=n(1)},function(e,t,n){"use strict";function r(e){var t=new i(e),n=s(i.prototype.request,t);return o.extend(n,i.prototype,t),o.extend(n,t),n}var o=n(2),s=n(3),i=n(4),a=n(22),u=n(10),c=r(u);c.Axios=i,c.create=function(e){return r(a(c.defaults,e))},c.Cancel=n(23),c.CancelToken=n(24),c.isCancel=n(9),c.all=function(e){return Promise.all(e)},c.spread=n(25),c.isAxiosError=n(26),e.exports=c,e.exports.default=c},function(e,t,n){"use strict";function r(e){return"[object Array]"===R.call(e)}function o(e){return"undefined"==typeof e}function s(e){return 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examples/desktop-server/Makefile

@@ -1,30 +0,0 @@
-PROG ?= example
-ROOT ?= $(realpath $(CURDIR)/../..)
-DEFS ?= -DMG_ENABLE_LINES=1 -DMG_ENABLE_DIRECTORY_LISTING=1
-CFLAGS ?= -I../.. -W -Wall -DMG_ENABLE_IPV6=1 $(DEFS) $(EXTRA)
-VCFLAGS = /nologo /W3 /O2 /I../.. $(DEFS) $(EXTRA)
-VC98 = docker run --rm -e WINEDEBUG=-all -v $(ROOT):$(ROOT) -w $(CURDIR) docker.io/mdashnet/vc98
-GCC = docker run --rm -v $(ROOT):$(ROOT) -w $(CURDIR) mdashnet/cc2
-
-all: $(PROG)
-	$(DEBUGGER) ./$(PROG)
-
-$(PROG):
-	$(CC) ../../mongoose.c main.c -I../.. $(CFLAGS) $(EXTRA) -o $@
-
-mongoose_mac: $(PROG)
-	cp $(PROG) $@
-
-mongoose_linux: main.c
-	$(GCC) $(CC) ../../mongoose.c main.c $(CFLAGS) -o $@
-
-mongoose.exe: main.c
-	$(VC98) wine cl ../../mongoose.c main.c $(VCFLAGS) ws2_32.lib /Fe$@
-
-zip: mongoose.exe mongoose_linux mongoose_mac
-	rm -rf mongoose; mkdir mongoose
-	cp mongoose.exe mongoose_mac mongoose_linux mongoose
-	zip -r mongoose.zip mongoose
-
-clean:
-	rm -rf $(PROG) *.o *.dSYM *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb mongoose mongoose_* mongoose.*

examples/esp32/CMakeLists.txt

@@ -0,0 +1,6 @@
+# The following lines of boilerplate have to be in your project's
+# CMakeLists in this exact order for cmake to work correctly
+cmake_minimum_required(VERSION 3.5)
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+project(mongoose-esp32-example)

examples/esp32/Makefile

@@ -0,0 +1,15 @@
+THISDIR = $(realpath $(CURDIR))
+ROOTDIR = $(realpath $(CURDIR)/../..)
+
+all: example
+
+example: main/main.c Makefile
+	docker run --rm -v $(ROOTDIR):$(ROOTDIR) -w $(THISDIR) espressif/idf idf.py build
+
+COMPORT ?= /dev/cu.SLAB_USBtoUART
+ESPTOOL ?= esptool.py
+flash:
+	cd build && $(ESPTOOL) --chip esp32 -p $(COMPORT) -b 460800 --before=default_reset --after=hard_reset write_flash --flash_mode dio --flash_freq 40m --flash_size 2MB 0x8000 partition_table/partition-table.bin 0x1000 bootloader/bootloader.bin 0x100000 mongoose-esp32-example.bin
+
+clean:
+	rm -rf $(PROG) *.o *.dSYM *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb mongoose mongoose_* mongoose.* build sdkconfig

examples/esp32/README.md

@@ -0,0 +1,28 @@
+# An example ESP32 application
+
+To build this application, follow these steps:
+
+1. Make sure you have Docker installed
+2. Clone whole mongoose repository on your machine:
+  ```sh
+  git clone --depth 1 https://github.com/cesanta/mongoose.git
+  ```
+3. Start command line or terminal, and go into the example's directory:
+  ```sh
+  cd mongoose/examples/esp32
+  ```
+4. Run `make`. This invokes a Docker-based build. A firmware will be built
+  in the `build/` directory:
+  ```sh
+  make
+  ```
+
+# Flashing built firmware
+
+If you have a real board to flash to, you can flash a built firmware.
+First, make sure to have `esptool.py` script installed on your workstation.
+Then, connect the board to your workstation and run the following command:
+
+```sh
+make flash COMPORT=YOUR_USB_PORT
+```

examples/esp32/main/CMakeLists.txt

@@ -0,0 +1,5 @@
+idf_component_register(SRCS "main.c"
+                            "wifi.c"
+                            "../../../mongoose.c"
+                       INCLUDE_DIRS "../../..")
+component_compile_options(-DMG_ENABLE_DIRECTORY_LISTING=1 -DMG_ENABLE_LINES)

examples/esp32/main/main.c

@@ -0,0 +1,53 @@
+// Copyright (c) 2020 Cesanta Software Limited
+// All rights reserved
+
+#include "esp_spiffs.h"
+#include "freertos/FreeRTOS.h"
+#include "mongoose.h"
+
+#define WIFI_SSID "WIFI_NETWORK"   // SET THIS!
+#define WIFI_PASS "WIFI_PASSWORD"  // SET THIS!
+#define FS_ROOT "/spiffs"
+
+// Event handler for an server (accepted) connection. Implemented endpoints:
+//    /api/stats  - return JSON object with ESP32 stats (free RAM)
+//    any other   - serve files from the filesystem
+static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
+  if (ev == MG_EV_HTTP_MSG) {
+    struct mg_http_message *hm = ev_data;
+    if (mg_http_match_uri(hm, "/api/stats")) {
+      mg_http_reply(c, 200, "", "{\"ram\": %lu}\n", xPortGetFreeHeapSize());
+    } else {
+      struct mg_http_serve_opts opts = {.root_dir = FS_ROOT};
+      mg_http_serve_dir(c, hm, &opts);
+    }
+  }
+}
+
+// SPIFFS is flat, so tell Mongoose that the FS root is a directory
+// This cludge is not required for filesystems with directory support
+bool mg_is_dir(const char *path) {
+  return strcmp(path, FS_ROOT) == 0;
+}
+
+void app_main(void) {
+  // Mount filesystem
+  esp_vfs_spiffs_conf_t conf = {
+      .base_path = FS_ROOT, .max_files = 20, .format_if_mount_failed = true};
+  int res = esp_vfs_spiffs_register(&conf);
+  LOG(res == ESP_OK ? LL_INFO : LL_ERROR, ("FS %s, %d", conf.base_path, res));
+  mg_file_printf(FS_ROOT "/hello.txt", "%s", "hello from ESP");
+
+  // Setup wifi. This function is implemented in wifi.c
+  // It blocks until connected to the configured WiFi network
+  void wifi_init(const char *ssid, const char *pass);
+  wifi_init(WIFI_SSID, WIFI_PASS);
+
+  // Connected to WiFi, now start HTTP server
+  struct mg_mgr mgr;
+  mg_log_set("3");
+  mg_mgr_init(&mgr);
+  mg_http_listen(&mgr, "http://0.0.0.0:80", cb, &mgr);  // Listening server
+  LOG(LL_INFO, ("Starting Mongoose web server v%s", MG_VERSION));
+  for (;;) mg_mgr_poll(&mgr, 1000);  // Infinite event loop
+}

examples/esp32/main/wifi.c

@@ -0,0 +1,104 @@
+// Code taken from the ESP32 IDF WiFi station Example
+
+#include <string.h>
+#include "esp_event.h"
+#include "esp_log.h"
+#include "esp_system.h"
+#include "esp_wifi.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/event_groups.h"
+#include "freertos/task.h"
+#include "nvs_flash.h"
+
+#include "lwip/err.h"
+#include "lwip/sys.h"
+
+#include "mongoose.h"
+
+static EventGroupHandle_t s_wifi_event_group;
+
+/* The event group allows multiple bits for each event, but we only care about
+ * two events:
+ * - we are connected to the AP with an IP
+ * - we failed to connect after the maximum amount of retries */
+#define WIFI_CONNECTED_BIT BIT0
+#define WIFI_FAIL_BIT BIT1
+
+static int s_retry_num = 0;
+
+static void event_handler(void *arg, esp_event_base_t event_base,
+                          int32_t event_id, void *event_data) {
+  if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START) {
+    esp_wifi_connect();
+  } else if (event_base == WIFI_EVENT &&
+             event_id == WIFI_EVENT_STA_DISCONNECTED) {
+    if (s_retry_num < 3) {
+      esp_wifi_connect();
+      s_retry_num++;
+      LOG(LL_INFO, ("retry to connect to the AP"));
+    } else {
+      xEventGroupSetBits(s_wifi_event_group, WIFI_FAIL_BIT);
+    }
+    LOG(LL_ERROR, ("connect to the AP fail"));
+  } else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) {
+    ip_event_got_ip_t *event = (ip_event_got_ip_t *) event_data;
+    LOG(LL_INFO, ("got ip:" IPSTR, IP2STR(&event->ip_info.ip)));
+    s_retry_num = 0;
+    xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
+  }
+}
+
+void wifi_init(const char *ssid, const char *pass) {
+  esp_err_t ret = nvs_flash_init();
+  if (ret == ESP_ERR_NVS_NO_FREE_PAGES ||
+      ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
+    ESP_ERROR_CHECK(nvs_flash_erase());
+    ret = nvs_flash_init();
+  }
+  ESP_ERROR_CHECK(ret);
+
+  s_wifi_event_group = xEventGroupCreate();
+
+  ESP_ERROR_CHECK(esp_netif_init());
+
+  ESP_ERROR_CHECK(esp_event_loop_create_default());
+  esp_netif_create_default_wifi_sta();
+
+  wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
+  ESP_ERROR_CHECK(esp_wifi_init(&cfg));
+
+  esp_event_handler_instance_t instance_any_id;
+  esp_event_handler_instance_t instance_got_ip;
+  ESP_ERROR_CHECK(esp_event_handler_instance_register(
+      WIFI_EVENT, ESP_EVENT_ANY_ID, &event_handler, NULL, &instance_any_id));
+  ESP_ERROR_CHECK(esp_event_handler_instance_register(
+      IP_EVENT, IP_EVENT_STA_GOT_IP, &event_handler, NULL, &instance_got_ip));
+
+  wifi_config_t c = {.sta = {.threshold = {.authmode = WIFI_AUTH_WPA2_PSK},
+                             .pmf_cfg = {.capable = true, .required = false}}};
+  snprintf((char *) c.sta.ssid, sizeof(c.sta.ssid), "%s", ssid);
+  snprintf((char *) c.sta.password, sizeof(c.sta.password), "%s", pass);
+  ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
+  ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_STA, &c));
+  ESP_ERROR_CHECK(esp_wifi_start());
+  LOG(LL_DEBUG, ("wifi_init_sta finished."));
+
+  EventBits_t bits = xEventGroupWaitBits(s_wifi_event_group,
+                                         WIFI_CONNECTED_BIT | WIFI_FAIL_BIT,
+                                         pdFALSE, pdFALSE, portMAX_DELAY);
+
+  if (bits & WIFI_CONNECTED_BIT) {
+    LOG(LL_INFO, ("connected to ap SSID:%s password:%s", ssid, pass));
+  } else if (bits & WIFI_FAIL_BIT) {
+    LOG(LL_ERROR, ("Failed to connect to SSID:%s, password:%s", ssid, pass));
+  } else {
+    LOG(LL_ERROR, ("UNEXPECTED EVENT"));
+  }
+
+  /* The event will not be processed after unregister */
+  ESP_ERROR_CHECK(esp_event_handler_instance_unregister(
+      IP_EVENT, IP_EVENT_STA_GOT_IP, instance_got_ip));
+  ESP_ERROR_CHECK(esp_event_handler_instance_unregister(
+      WIFI_EVENT, ESP_EVENT_ANY_ID, instance_any_id));
+  vEventGroupDelete(s_wifi_event_group);
+}

examples/esp32/partitions.csv

@@ -0,0 +1,5 @@
+# Name,   Type, SubType, Offset,  Size, Flags
+nvs,      data, nvs,     0x9000,  0x6000,
+phy_init, data, phy,     0xf000,  0x1000,
+storage,  data, spiffs,  0x10000, 0x10000,
+factory,  app,  factory, 0x100000, 1M,

examples/esp32/sdkconfig.defaults

@@ -0,0 +1,3 @@
+CONFIG_PARTITION_TABLE_CUSTOM=y
+CONFIG_PARTITION_TABLE_CUSTOM_FILENAME="partitions.csv"
+CONFIG_PARTITION_TABLE_FILENAME="partitions.csv"

examples/esp8266/Makefile

@@ -0,0 +1,10 @@
+THISDIR = $(realpath $(CURDIR))
+ROOTDIR = $(realpath $(CURDIR)/../..)
+
+all: example
+
+example: src/main/main.c src/main/wifi.c Makefile
+	docker run --rm -v $(ROOTDIR):$(ROOTDIR) -w $(THISDIR) docker.io/mdashnet/8266 make -C src defconfig app
+
+clean:
+	rm -rf $(PROG) *.o *.dSYM *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb mongoose mongoose_* mongoose.* src/build src/sdkconfig

examples/esp8266/README.md

@@ -0,0 +1,18 @@
+# An example ESP8266 application
+
+To build this application, follow these steps:
+
+1. Make sure you have Docker installed
+2. Clone whole mongoose repository on your machine:
+  ```sh
+  git clone https://github.com/cesanta/mongoose.git
+  ```
+3. Start command line or terminal, and go into the example's directory:
+  ```sh
+  cd mongoose/examples/esp8266
+  ```
+4. Run `make`. This invokes a Docker-based build. A firmware will be built
+  in the `src/build/` directory:
+  ```sh
+  make example
+  ```

examples/esp8266/src/Makefile

@@ -0,0 +1,9 @@
+#
+# This is a project Makefile. It is assumed the directory this Makefile resides in is a
+# project subdirectory.
+#
+
+PROJECT_NAME := mongoose-example
+
+include $(IDF_PATH)/make/project.mk
+

examples/esp8266/src/main/component.mk

@@ -0,0 +1,10 @@
+  #
+  # Main component makefile.
+  #
+  # This Makefile can be left empty. By default, it will take the sources in the 
+  # src/ directory, compile them and link them into lib(subdirectory_name).a 
+  # in the build directory. This behaviour is entirely configurable,
+  # please read the ESP-IDF documents if you need to do this.
+#
+
+COMPONENT_INCLUDES += ../../../../..

examples/esp8266/src/main/main.c

@@ -0,0 +1,54 @@
+// Copyright (c) 2020 Cesanta Software Limited
+// All rights reserved
+
+#include "mongoose.h"
+
+#define WIFI_SSID "WIFI_NETWORK"   // SET THIS!
+#define WIFI_PASS "WIFI_PASSWORD"  // SET THIS!
+
+#define SERVER_URL "http://0.0.0.0:80"
+#define CLIENT_URL "http://info.cern.ch"
+
+// Event handler for an server (accepted) connection
+static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
+  if (ev == MG_EV_HTTP_MSG) {
+    mg_http_reply(c, 200, "", "Hello from ESP!\n");
+  }
+}
+
+// Event handler for a client connection - fetch the first web page in history
+// To enable TLS for HTTP,
+//   1. Copy "ca.pem" file to the ESP32 flash FS
+//   2. Add TLS init snippet for the connection, see examples/http-client
+static void cb2(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
+  if (ev == MG_EV_CONNECT) {
+    struct mg_str s = mg_url_host(CLIENT_URL);
+    mg_printf(c, "GET / HTTP/1.0\r\nHost: %.*s\r\n\r\n", (int) s.len, s.ptr);
+  } else if (ev == MG_EV_HTTP_MSG) {
+    struct mg_http_message *hm = ev_data;  // Print HTTP response
+    LOG(LL_INFO, ("Fetched:\n%.*s", (int) hm->message.len, hm->message.ptr));
+    c->is_closing = 1;
+  }
+}
+
+// Called after we're connected to WiFi network
+static void run_mongoose(void) {
+  struct mg_mgr mgr;
+  mg_log_set("3");
+  mg_mgr_init(&mgr);
+  mg_http_listen(&mgr, SERVER_URL, cb, &mgr);    // Listening server
+  mg_http_connect(&mgr, CLIENT_URL, cb2, &mgr);  // Example client
+  LOG(LL_INFO, ("Starting Mongoose web server v%s", MG_VERSION));
+  for (;;) mg_mgr_poll(&mgr, 1000);
+  mg_mgr_free(&mgr);
+}
+
+void app_main(void) {
+  // Setup wifi. This function is implemented in wifi.c
+  // It blocks until connected to the configured WiFi network
+  void wifi_init(const char *ssid, const char *pass);
+  wifi_init(WIFI_SSID, WIFI_PASS);
+
+  // Done connecting to WiFi, now start HTTP server
+  run_mongoose();
+}

examples/esp8266/src/main/mongoose.c

@@ -0,0 +1 @@
+../../../../mongoose.c

examples/esp8266/src/main/wifi.c

@@ -0,0 +1,86 @@
+#include <string.h>
+#include "esp_event.h"
+#include "esp_log.h"
+#include "esp_system.h"
+#include "esp_wifi.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/event_groups.h"
+#include "freertos/task.h"
+#include "nvs_flash.h"
+
+#include "lwip/err.h"
+#include "lwip/sys.h"
+
+#include "mongoose.h"
+
+static EventGroupHandle_t s_wifi_event_group;
+
+/* The event group allows multiple bits for each event, but we only care about
+ * two events:
+ * - we are connected to the AP with an IP
+ * - we failed to connect after the maximum amount of retries */
+#define WIFI_CONNECTED_BIT BIT0
+#define WIFI_FAIL_BIT BIT1
+
+static int s_retry_num = 0;
+
+static void event_handler(void *arg, esp_event_base_t event_base,
+                          int32_t event_id, void *event_data) {
+  if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START) {
+    esp_wifi_connect();
+  } else if (event_base == WIFI_EVENT &&
+             event_id == WIFI_EVENT_STA_DISCONNECTED) {
+    if (s_retry_num < 3) {
+      esp_wifi_connect();
+      s_retry_num++;
+      LOG(LL_DEBUG, ("retry to connect to the AP"));
+    } else {
+      xEventGroupSetBits(s_wifi_event_group, WIFI_FAIL_BIT);
+    }
+    LOG(LL_ERROR, ("connect to the AP fail"));
+  } else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) {
+    ip_event_got_ip_t *event = (ip_event_got_ip_t *) event_data;
+    LOG(LL_INFO, ("got ip:%s", ip4addr_ntoa(&event->ip_info.ip)));
+    s_retry_num = 0;
+    xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
+  }
+}
+
+void wifi_init(const char *ssid, const char *pass) {
+  s_wifi_event_group = xEventGroupCreate();
+  tcpip_adapter_init();
+  ESP_ERROR_CHECK(esp_event_loop_create_default());
+  wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
+  ESP_ERROR_CHECK(esp_wifi_init(&cfg));
+  ESP_ERROR_CHECK(esp_event_handler_register(WIFI_EVENT, ESP_EVENT_ANY_ID,
+                                             &event_handler, NULL));
+  ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_STA_GOT_IP,
+                                             &event_handler, NULL));
+
+  wifi_config_t c = {};
+  snprintf((char *) c.sta.ssid, sizeof(c.sta.ssid), "%s", ssid);
+  snprintf((char *) c.sta.password, sizeof(c.sta.password), "%s", pass);
+  if (pass != NULL && pass[0] != '\0') {
+    c.sta.threshold.authmode = WIFI_AUTH_WPA2_PSK;
+  }
+  ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
+  ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_STA, &c));
+  ESP_ERROR_CHECK(esp_wifi_start());
+  EventBits_t bits = xEventGroupWaitBits(s_wifi_event_group,
+                                         WIFI_CONNECTED_BIT | WIFI_FAIL_BIT,
+                                         pdFALSE, pdFALSE, portMAX_DELAY);
+
+  if (bits & WIFI_CONNECTED_BIT) {
+    LOG(LL_INFO, ("connected to ap SSID:%s password:%s", ssid, pass));
+  } else if (bits & WIFI_FAIL_BIT) {
+    LOG(LL_ERROR, ("Failed to connect to SSID:%s, password:%s", ssid, pass));
+  } else {
+    LOG(LL_ERROR, ("UNEXPECTED EVENT"));
+  }
+
+  ESP_ERROR_CHECK(esp_event_handler_unregister(IP_EVENT, IP_EVENT_STA_GOT_IP,
+                                               &event_handler));
+  ESP_ERROR_CHECK(esp_event_handler_unregister(WIFI_EVENT, ESP_EVENT_ANY_ID,
+                                               &event_handler));
+  vEventGroupDelete(s_wifi_event_group);
+}

examples/file-upload/main.c

@@ -12,7 +12,8 @@ static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
     if (mg_http_match_uri(hm, "/upload")) {
       mg_http_upload(c, hm, "/tmp");
     } else {
-      mg_http_serve_dir(c, ev_data, "web_root");
+      struct mg_http_serve_opts opts = {.root_dir = "web_root"};
+      mg_http_serve_dir(c, ev_data, &opts);
     }
   }
 }

examples/form-upload/Makefile

@@ -0,0 +1,10 @@
+PROG ?= example
+
+all: $(PROG)
+	$(DEBUGGER) ./$(PROG)
+
+$(PROG):
+	$(CC) ../../mongoose.c -I../.. $(CFLAGS) $(EXTRA) -o $(PROG) main.c
+
+clean:
+	rm -rf $(PROG) *.o *.dSYM *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb log.txt

examples/form-upload/main.c

@@ -0,0 +1,53 @@
+// Copyright (c) 2021 Cesanta Software Limited
+// All rights reserved
+
+#include "mongoose.h"
+
+// HTTP request handler function. It implements the following endpoints:
+//   /upload - prints all submitted form elements
+//   all other URI - serves web_root/ directory
+//
+// /////////////////           IMPORTANT        //////////////////////////
+//
+// Mongoose has a limit on input buffer, which also limits maximum upload size.
+// It is controlled by the MG_MAX_RECV_BUF_SIZE constant, which is set by
+// default to (3 * 1024 * 1024), i.e. 3 megabytes.
+// Use -DMG_MAX_RECV_BUF_SIZE=NEW_LIMIT to override it.
+//
+// Also, consider changing -DMG_IO_SIZE=SOME_BIG_VALUE to increase IO buffer
+// increment when reading data.
+static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
+  if (ev == MG_EV_HTTP_MSG) {
+    struct mg_http_message *hm = (struct mg_http_message *) ev_data;
+    LOG(LL_INFO, ("New request to: [%.*s], body size: %lu", (int) hm->uri.len,
+                  hm->uri.ptr, (unsigned long) hm->body.len));
+    if (mg_http_match_uri(hm, "/upload")) {
+      struct mg_http_part part;
+      size_t ofs = 0;
+      while ((ofs = mg_http_next_multipart(hm->body, ofs, &part)) > 0) {
+        LOG(LL_INFO,
+            ("Chunk name: [%.*s] filename: [%.*s] length: %lu bytes",
+             (int) part.name.len, part.name.ptr, (int) part.filename.len,
+             part.filename.ptr, (unsigned long) part.body.len));
+      }
+      mg_http_reply(c, 200, "", "Thank you!");
+    } else {
+      struct mg_http_serve_opts opts = {.root_dir = "web_root"};
+      mg_http_serve_dir(c, ev_data, &opts);
+    }
+  }
+}
+
+int main(void) {
+  struct mg_mgr mgr;
+  struct mg_timer t1;
+
+  mg_mgr_init(&mgr);
+  mg_log_set("3");
+  mg_http_listen(&mgr, "http://localhost:8000", cb, NULL);
+
+  for (;;) mg_mgr_poll(&mgr, 50);
+  mg_mgr_free(&mgr);
+
+  return 0;
+}

examples/form-upload/web_root/index.html

@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <title>example</title>
+    <meta charset="utf-8" />
+    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <style>
+      #container { margin-right: auto; margin-left: auto; max-width: 480px; }
+      #info { background: #e0f0f0; border-radius: .5em; padding: 2em;  }
+      #wrapper { margin-top: 1em; }
+      form * { margin: 0.2em 0; }
+    </style>
+  </head>
+  <body>
+    <div id="container">
+      <div id="info">
+        Mongoose always buffers a full HTTP message before invoking
+        MG_EV_HTTP_MSG event. Big POST request require of lot
+        of RAM to buffer everything. Therefore, standard form uploads
+        should be used only when Mongoose runs on a system with lots of RAM.
+        Otherwise, please see <code>file-updload</code> example, how
+        a big file could be uploaded to a device with little RAM.
+        <br/><br/>
+        In this example, a standard HTML form upload is used, which uses
+        <code>multipart-form-data</code> encoding with
+        several variables and file upload. On a server side, a
+        <code>mg_http_next_multipart()</code> API is used to iterate over
+        all submitted form elements and print their payload.
+      </div>
+      <div id="wrapper">
+        <form action="/upload" method="post" enctype="multipart/form-data">
+          <input type="text" name="field1" value="type some text here" /> <br/>
+          <input type="file" name="file1" /> </br>
+          <button type="submit">submit form</button>
+        </form>
+      </div>
+    </div>
+  </body>
+</html>

examples/http-client/Makefile

@@ -1,19 +1,28 @@
 PROG ?= example
-ARGS ?= http://www.ladyada.net/
-MBEDTLS_DIR ?=
+CFLAGS ?= -DMG_ENABLE_LINES $(EXTRA)
+ROOT ?= $(realpath $(CURDIR)/../..)
+LIN = docker run -it --rm -v $(ROOT):$(ROOT) -w $(CURDIR) mdashnet/cc2
 
-ifeq "$(MBEDTLS_DIR)" ""
-else
-CFLAGS += -DMG_ENABLE_MBEDTLS=1 -I$(MBEDTLS_DIR)/include -I/usr/include
-CFLAGS += -L$(MBEDTLS_DIR)/lib -lmbedtls -lmbedcrypto -lmbedx509
+ifneq ($(MBEDTLS),)
+CFLAGS += -DMG_ENABLE_MBEDTLS=1 -I$(MBEDTLS)/include -I/usr/include
+CFLAGS += -L$(MBEDTLS)/lib -lmbedtls -lmbedcrypto -lmbedx509
+endif
+
+ifneq ($(OPENSSL),)
+CFLAGS += -DMG_ENABLE_OPENSSL=1 -I$(OPENSSL)/include
+CFLAGS += -L$(OPENSSL)/lib -lssl -lcrypto
 endif
 
 all: $(PROG)
 	$(DEBUGGER) ./$(PROG) $(ARGS)
 
-
 $(PROG): main.c
 	$(CC) ../../mongoose.c -I../.. -W -Wall $(CFLAGS) -o $(PROG) main.c
 
+linux: all
+linux: CFLAGS += -O2 -g -fsanitize=address,undefined,shift,null,return,bounds,alignment,object-size,bool,enum -static-libasan
+linux: CC = $(LIN) cc
+linux: DEBUGGER = $(LIN)
+
 clean:
 	rm -rf $(PROG) *.o *.dSYM *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb

examples/http-client/main.c

@@ -1,46 +1,56 @@
-// Copyright (c) 2020 Cesanta Software Limited
+// Copyright (c) 2021 Cesanta Software Limited
 // All rights reserved
 //
-// Example HTTP client. Usage:
-//    make
-//    ./example http://www.ladyada.net/
+// Example HTTP client. Connect to `s_url`, send request, wait for a response,
+// print the response and exit.
+// You can change `s_url` from the command line by executing: ./example YOUR_URL
 //
 // To enable SSL/TLS for this client, build it like this:
-//    make MBEDTLS_DIR=/path/to/your/mbedtls/installation
+//    make MBEDTLS=/path/to/your/mbedtls/installation
+//    make OPENSSL=/path/to/your/openssl/installation
 
 #include "mongoose.h"
 
+// The very first web page in history. You can replace it from command line
+static const char *s_url = "http://info.cern.ch//foo";
+
 // Print HTTP response and signal that we're done
 static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
-  if (ev == MG_EV_HTTP_MSG) {
+  if (ev == MG_EV_CONNECT) {
+    // Connected to server. Extract host name from URL
+    struct mg_str host = mg_url_host(s_url);
+
+    // If s_url is https://, tell client connection to use TLS
+    if (mg_url_is_ssl(s_url)) {
+      struct mg_tls_opts opts = {.ca = "ca.pem", .srvname = host};
+      mg_tls_init(c, &opts);
+    }
+
+    // Send request
+    mg_printf(c,
+              "GET %s HTTP/1.0\r\n"
+              "Host: %.*s\r\n"
+              "\r\n",
+              mg_url_uri(s_url), (int) host.len, host.ptr);
+  } else if (ev == MG_EV_HTTP_MSG) {
+    // Response is received. Print it
     struct mg_http_message *hm = (struct mg_http_message *) ev_data;
     printf("%.*s", (int) hm->message.len, hm->message.ptr);
-    c->is_closing = 1;
-    *(bool *) fn_data = true;
+    c->is_closing = 1;         // Tell mongoose to close this connection
+    *(bool *) fn_data = true;  // Tell event loop to stop
+  } else if (ev == MG_EV_ERROR) {
+    *(bool *) fn_data = true;  // Error, tell event loop to stop
   }
 }
 
 int main(int argc, char *argv[]) {
-  struct mg_mgr mgr;                            // Event manager
-  mg_mgr_init(&mgr);                            // Initialise event manager
-
-  if (argc != 2) {
-    fprintf(stderr, "Usage: %s URL\n", argv[0]);  // Print error
-  } else {
-    bool done = false;  // Event handler flips it to true
-    struct mg_connection *c = mg_http_connect(&mgr, argv[1], fn, &done);
-    if (c != NULL) {
-      mg_printf(c, "GET %s HTTP/1.0\r\n\r\n", mg_url_uri(argv[1]));
-      // If target URL is SSL/TLS, command client connection to use TLS
-      if (mg_url_is_ssl(argv[1])) {
-        struct mg_tls_opts opts = {.ca = "ca.pem"};
-        mg_tls_init(c, &opts);
-      }
-    }
-    while (done == false) mg_mgr_poll(&mgr, 1000);  // Event loop
-  }
-
-  mg_mgr_free(&mgr);
-
+  struct mg_mgr mgr;                        // Event manager
+  bool done = false;                        // Event handler flips it to true
+  if (argc > 1) s_url = argv[1];            // Use URL from command line
+  mg_log_set("3");                          // Set to 0 to disable debug
+  mg_mgr_init(&mgr);                        // Initialise event manager
+  mg_http_connect(&mgr, s_url, fn, &done);  // Create client connection
+  while (!done) mg_mgr_poll(&mgr, 1000);    // Infinite event loop
+  mg_mgr_free(&mgr);                        // Free resources
   return 0;
 }

examples/http-proxy-client/Makefile

@@ -0,0 +1,19 @@
+PROG ?= example
+ARGS ?= http://www.ladyada.net/
+MBEDTLS_DIR ?=
+
+ifeq "$(MBEDTLS_DIR)" ""
+else
+CFLAGS += -DMG_ENABLE_MBEDTLS=1 -I$(MBEDTLS_DIR)/include -I/usr/include
+CFLAGS += -L$(MBEDTLS_DIR)/lib -lmbedtls -lmbedcrypto -lmbedx509
+endif
+
+all: $(PROG)
+	$(DEBUGGER) ./$(PROG) $(ARGS)
+
+
+$(PROG): main.c
+	$(CC) ../../mongoose.c -I../.. -W -Wall $(CFLAGS) -o $(PROG) main.c
+
+clean:
+	rm -rf $(PROG) *.o *.dSYM *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb

examples/http-proxy-client/ca.pem

@@ -0,0 +1,507 @@
+Subject: O=Digital Signature Trust Co., CN=DST Root CA X3
+Not Before: Sep 30 21:12:19 2000 GMT
+Not After : Sep 30 14:01:15 2021 GMT
+-----BEGIN CERTIFICATE-----
+MIIDSjCCAjKgAwIBAgIQRK+wgNajJ7qJMDmGLvhAazANBgkqhkiG9w0BAQUFADA/
+MSQwIgYDVQQKExtEaWdpdGFsIFNpZ25hdHVyZSBUcnVzdCBDby4xFzAVBgNVBAMT
+DkRTVCBSb290IENBIFgzMB4XDTAwMDkzMDIxMTIxOVoXDTIxMDkzMDE0MDExNVow
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+OLl5CjH9UL2AZd+3UWODyOKIYepLYYHsUmu5ouJLGiifSKOeDNoJjj4XLh7dIN9b
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+ikugdB/OEIKcdBodfpga3csTS7MgROSR6cz8faXbauX+5v3gTt23ADq1cEmv8uXr
+AvHRAosZy5Q6XkjEGB5YGV8eAlrwDPGxrancWYaLbumR9YbK+rlmM6pZW87ipxZz
+R8srzJmwN0jP41ZL9c8PDHIyh8bwRLtTcm1D9SZImlJnt1ir/md2cXjbDaJWFBM5
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+Ob8VZRzI9neWagqNdwvYkQsEjgfbKbYK7p2CNTUQ
+-----END CERTIFICATE-----
+
+Subject: C=IE, O=Baltimore, OU=CyberTrust, CN=Baltimore CyberTrust Root
+Not Before: May 12 18:46:00 2000 GMT
+Not After : May 12 23:59:00 2025 GMT
+-----BEGIN CERTIFICATE-----
+MIIDdzCCAl+gAwIBAgIEAgAAuTANBgkqhkiG9w0BAQUFADBaMQswCQYDVQQGEwJJ
+RTESMBAGA1UEChMJQmFsdGltb3JlMRMwEQYDVQQLEwpDeWJlclRydXN0MSIwIAYD
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+R9I4LtD+gdwyah617jzV/OeBHRnDJELqYzmp
+-----END CERTIFICATE-----
+
+Subject: C=US, O=GeoTrust Inc., CN=GeoTrust Global CA
+Not Before: May 21 04:00:00 2002 GMT
+Not After : May 21 04:00:00 2022 GMT
+-----BEGIN CERTIFICATE-----
+MIIDVDCCAjygAwIBAgIDAjRWMA0GCSqGSIb3DQEBBQUAMEIxCzAJBgNVBAYTAlVT
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+5fEWCRE11azbJHFwLJhWC9kXtNHjUStedejV0NxPNO3CBWaAocvmMw==
+-----END CERTIFICATE-----
+
+Subject: C=US, O=Symantec Corporation, OU=Symantec Trust Network, CN=Symantec Class 3 ECC 256 bit SSL CA - G2
+Not Before: May 12 00:00:00 2015 GMT
+Not After : May 11 23:59:59 2025 GMT
+-----BEGIN CERTIFICATE-----
+MIIEajCCA1KgAwIBAgIQP5KHvp0dpKN6nfYoLndaxDANBgkqhkiG9w0BAQsFADCB
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+-----END CERTIFICATE-----
+
+Subject: C=US, O=VeriSign, Inc., OU=VeriSign Trust Network, OU=(c) 2006 VeriSign, Inc. - For authorized use only, CN=VeriSign Class 3 Public Primary Certification Authority - G5
+Not Before: Nov  8 00:00:00 2006 GMT
+Not After : Jul 16 23:59:59 2036 GMT
+-----BEGIN CERTIFICATE-----
+MIIE0zCCA7ugAwIBAgIQGNrRniZ96LtKIVjNzGs7SjANBgkqhkiG9w0BAQUFADCB
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+-----END CERTIFICATE-----
+
+Subject: C=US, O=The Go Daddy Group, Inc., OU=Go Daddy Class 2 Certification Authority
+Not Before: Jun 29 17:06:20 2004 GMT
+Not After : Jun 29 17:06:20 2034 GMT
+-----BEGIN CERTIFICATE-----
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+ReYNnyicsbkqWletNw+vHX/bvZ8=
+-----END CERTIFICATE-----
+
+# Note: Amazon ATS endpoint uses this (2018/12/18)
+Subject: C=US, O=Starfield Technologies, Inc., OU=Starfield Class 2 Certification Authority
+Not Before: Jun 29 17:39:16 2004 GMT
+Not After : Jun 29 17:39:16 2034 GMT
+-----BEGIN CERTIFICATE-----
+MIIEDzCCAvegAwIBAgIBADANBgkqhkiG9w0BAQUFADBoMQswCQYDVQQGEwJVUzEl
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+-----END CERTIFICATE-----
+
+Not Before: Sep  1 00:00:00 2009 GMT
+Not After : Dec 31 23:59:59 2037 GMT
+Subject: C=US, ST=Arizona, L=Scottsdale, O=Starfield Technologies, Inc., CN=Starfield Root Certificate Authority - G2
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+Subject: C=US, ST=Arizona, L=Scottsdale, O=Starfield Technologies, Inc., CN=Starfield Services Root Certificate Authority - G2
+Not Before: Sep  1 00:00:00 2009 GMT
+Not After : Dec 31 23:59:59 2037 GMT
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+Subject: OU=GlobalSign Root CA - R2, O=GlobalSign, CN=GlobalSign
+Not Before: Dec 15 08:00:00 2006 GMT
+Not After : Dec 15 08:00:00 2021 GMT
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+Subject: C=US, O=DigiCert Inc, OU=www.digicert.com, CN=DigiCert High Assurance EV Root CA
+Not Before: Nov 10 00:00:00 2006 GMT
+Not After : Nov 10 00:00:00 2031 GMT
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+Subject: C=US, O=DigiCert Inc, OU=www.digicert.com, CN=DigiCert Global Root CA
+Not Before: Nov 10 00:00:00 2006 GMT
+Not After : Nov 10 00:00:00 2031 GMT
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# *.azure-devices.de use this root.
+Subject: C = DE, O = D-Trust GmbH, CN = D-TRUST Root Class 3 CA 2 2009
+Not Before: Nov  5 08:35:58 2009 GMT
+Not After : Nov  5 08:35:58 2029 GMT
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# https://www.amazontrust.com/repository/
+Subject: C = US, O = Amazon, CN = Amazon Root CA 1
+Not Before: May 26 00:00:00 2015 GMT
+Not After : Jan 17 00:00:00 2038 GMT
+-----BEGIN CERTIFICATE-----
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+rqXRfboQnoZsG4q5WTP468SQvvG5
+-----END CERTIFICATE-----
+
+Subject: C = US, O = Amazon, CN = Amazon Root CA 2
+Not Before: May 26 00:00:00 2015 GMT
+Not After : May 26 00:00:00 2040 GMT
+-----BEGIN CERTIFICATE-----
+MIIFQTCCAymgAwIBAgITBmyf0pY1hp8KD+WGePhbJruKNzANBgkqhkiG9w0BAQwF
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+4PsJYGw=
+-----END CERTIFICATE-----
+
+Not Before: May 26 00:00:00 2015 GMT
+Not After : May 26 00:00:00 2040 GMT
+Subject: C = US, O = Amazon, CN = Amazon Root CA 3
+-----BEGIN CERTIFICATE-----
+MIIBtjCCAVugAwIBAgITBmyf1XSXNmY/Owua2eiedgPySjAKBggqhkjOPQQDAjA5
+MQswCQYDVQQGEwJVUzEPMA0GA1UEChMGQW1hem9uMRkwFwYDVQQDExBBbWF6b24g
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+YyRIHN8wfdVoOw==
+-----END CERTIFICATE-----
+
+Not Before: May 26 00:00:00 2015 GMT
+Not After : May 26 00:00:00 2040 GMT
+Subject: C = US, O = Amazon, CN = Amazon Root CA 4
+-----BEGIN CERTIFICATE-----
+MIIB8jCCAXigAwIBAgITBmyf18G7EEwpQ+Vxe3ssyBrBDjAKBggqhkjOPQQDAzA5
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+1KyLa2tJElMzrdfkviT8tQp21KW8EA==
+-----END CERTIFICATE-----
+
+Not Before: Nov 10 00:00:00 2006 GMT
+Not After : Nov 10 00:00:00 2031 GMT
+Subject: C = US, O = DigiCert Inc, OU = www.digicert.com, CN = DigiCert Global Root CA
+-----BEGIN CERTIFICATE-----
+MIIDrzCCApegAwIBAgIQCDvgVpBCRrGhdWrJWZHHSjANBgkqhkiG9w0BAQUFADBh
+MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMRkwFwYDVQQLExB3
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+CAUw7C29C79Fv1C5qfPrmAESrciIxpg0X40KPMbp1ZWVbd4=
+-----END CERTIFICATE-----
+
+Not Before: Nov 13 00:00:00 2012 GMT
+Not After : Jan 19 03:14:07 2038 GMT
+Subject: OU = GlobalSign ECC Root CA - R4, O = GlobalSign, CN = GlobalSign
+-----BEGIN CERTIFICATE-----
+MIIB4TCCAYegAwIBAgIRKjikHJYKBN5CsiilC+g0mAIwCgYIKoZIzj0EAwIwUDEk
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+ewv4n4Q=
+-----END CERTIFICATE-----
+
+Not Before: Nov  1 00:00:42 2018 GMT
+Not After : Nov  1 00:00:42 2042 GMT
+Subject: C = US, O = Google Trust Services LLC, CN = GTS LTSR
+-----BEGIN CERTIFICATE-----
+MIIBxTCCAWugAwIBAgINAfD3nVndblD3QnNxUDAKBggqhkjOPQQDAjBEMQswCQYD
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+miGgpajjf/gFigGM34F9021bCWs1MbL0SA==
+-----END CERTIFICATE-----

examples/http-proxy-client/main.c

@@ -0,0 +1,64 @@
+// Copyright (c) 2020 Cesanta Software Limited
+// All rights reserved
+//
+// Example HTTP client that uses a proxy server. Usage:
+//    make
+//    ./example PROXY:PORT http://www.ladyada.net
+//
+// To enable SSL/TLS for this client, build it like this:
+//    make MBEDTLS_DIR=/path/to/your/mbedtls/installation
+
+#include "mongoose.h"
+
+// Print HTTP response and signal that we're done
+static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
+  const char *url = fn_data;
+  static bool connected;
+  if (ev == MG_EV_HTTP_MSG) {
+    struct mg_http_message *hm = (struct mg_http_message *) ev_data;
+    printf("%.*s", (int) hm->message.len, hm->message.ptr);
+    exit(EXIT_SUCCESS);
+  } else if (ev == MG_EV_CONNECT) {
+    // Proxy TCP connection established. Send CONNECT request
+    struct mg_str host = mg_url_host(url);
+    // c->is_hexdumping = 1;
+    mg_printf(c, "CONNECT %.*s:%hu HTTP/1.1\r\nHost: %.*s:%hu\r\n\r\n",
+              (int) host.len, host.ptr, mg_url_port(url), (int) host.len,
+              host.ptr, mg_url_port(url));
+    // If target URL is SSL/TLS, command client connection to use TLS
+    if (mg_url_is_ssl(url)) {
+      struct mg_tls_opts opts = {.ca = "ca.pem"};
+      mg_tls_init(c, &opts);
+    }
+  } else if (!connected && ev == MG_EV_READ) {
+    struct mg_http_message hm;
+    int n = mg_http_parse((char *) c->recv.buf, c->recv.len, &hm);
+    if (n > 0) {
+      struct mg_str host = mg_url_host(url);
+      // CONNECT response - tunnel is established
+      connected = true;
+      LOG(LL_DEBUG,
+          ("Connected to proxy, status: %.*s", (int) hm.uri.len, hm.uri.ptr));
+      mg_iobuf_delete(&c->recv, n);
+      // Send request to the target server
+      mg_printf(c, "GET / HTTP/1.0\r\nHost: %.*s\r\n\r\n", (int) host.len,
+                host.ptr);
+    }
+  }
+}
+
+int main(int argc, char *argv[]) {
+  struct mg_mgr mgr;
+
+  if (argc != 3) {
+    fprintf(stderr, "Usage: %s PROXY_URL URL\n", argv[0]);
+    return EXIT_FAILURE;
+  }
+
+  mg_mgr_init(&mgr);                            // Initialise event manager
+  mg_http_connect(&mgr, argv[1], fn, argv[2]);  // Connect to the proxy
+  for (;;) mg_mgr_poll(&mgr, 1000);             // Event loop
+  mg_mgr_free(&mgr);
+
+  return 0;
+}

examples/http-restful-server/Makefile

@@ -1,5 +1,13 @@
 PROG ?= example
 
+ifneq ($(MBEDTLS_DIR),)
+CFLAGS += -DMG_ENABLE_MBEDTLS=1 -I$(MBEDTLS_DIR)/include -I/usr/include
+CFLAGS += -L$(MBEDTLS_DIR)/lib -lmbedtls -lmbedcrypto -lmbedx509
+else ifneq ($(OPENSSL_DIR),)
+CFLAGS += -DMG_ENABLE_OPENSSL=1 -I$(OPENSSL_DIR)/include
+CFLAGS += -L$(OPENSSL_DIR)/lib -lssl -lcrypto
+endif
+
 all: $(PROG)
 	$(DEBUGGER) ./$(PROG) $(ARGS)
 

examples/http-restful-server/ca.pem

@@ -0,0 +1,43 @@
+Certificate:
+    Data:
+        Version: 3 (0x2)
+        Serial Number:
+            11:2a:0e:3c:6a:8c:85:ff:6e:6a:bc:db:95:51:70:ce:b4:30:78:c7
+        Signature Algorithm: ecdsa-with-SHA256
+        Issuer: C = IE, L = Dublin, O = Cesanta, CN = Test Root
+        Validity
+            Not Before: May  9 21:51:44 2020 GMT
+            Not After : May  9 21:51:44 2050 GMT
+        Subject: C = IE, L = Dublin, O = Cesanta, CN = Test Root
+        Subject Public Key Info:
+            Public Key Algorithm: id-ecPublicKey
+                Public-Key: (256 bit)
+                pub:
+                    04:2c:ab:d1:02:66:24:96:d7:12:3e:09:50:4f:f1:
+                    50:ee:51:e8:55:03:5e:ba:b1:1d:98:b2:72:79:27:
+                    a8:1b:31:0d:5d:50:21:ff:42:f2:da:74:17:5e:53:
+                    b2:65:41:c1:fc:84:de:4a:11:b9:8c:f4:19:d9:c4:
+                    ca:2b:ea:eb:2c
+                ASN1 OID: prime256v1
+                NIST CURVE: P-256
+        X509v3 extensions:
+            X509v3 Basic Constraints: 
+                CA:TRUE
+            X509v3 Key Usage: 
+                Digital Signature, Key Encipherment, Key Agreement, Certificate Sign, CRL Sign
+    Signature Algorithm: ecdsa-with-SHA256
+         30:46:02:21:00:9c:71:6c:00:8c:06:41:0c:91:2f:cd:41:d3:
+         87:47:e9:df:3a:22:ad:25:7c:bf:0e:2b:39:dd:7a:0c:4e:68:
+         1d:02:21:00:8f:c1:22:30:10:61:5d:51:10:ea:08:2d:02:63:
+         67:67:32:b5:06:63:96:57:bb:78:47:0a:88:d9:19:2e:f3:be
+-----BEGIN CERTIFICATE-----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==
+-----END CERTIFICATE-----

examples/http-restful-server/main.c

@@ -1,25 +1,43 @@
 // Copyright (c) 2020 Cesanta Software Limited
 // All rights reserved
+//
+// HTTP server example. This server serves both static and dynamic content.
+// It opens two ports: plain HTTP on port 8000 and HTTP on port 8443.
+// It implements the following endpoints:
+//    /api/f1 - respond with JSON string {"result": 123}
+//    /api/f2/:id - wildcard example, respond with JSON string {"result": "URI"}
+//    any other URI serves static files from s_root_dir
+//
+// To enable SSL/TLS (using self-signed certificates in PEM files),
+//    1. make MBEDTLS_DIR=/path/to/your/mbedtls/installation
+//    2. curl -k https://127.0.0.1:8443
 
 #include "mongoose.h"
 
-static const char *s_listen_on = "http://localhost:8000";
-static const char *s_web_directory = ".";
+static const char *s_http_addr = "http://0.0.0.0:8000";    // HTTP port
+static const char *s_https_addr = "https://0.0.0.0:8443";  // HTTPS port
+static const char *s_root_dir = ".";
 
-// This RESTful server implements the following endpoints:
-//   /api/f1 - respond with JSON string {"result": 123}
-//   /api/f2/:id - wildcard example, respond with JSON string {"result": "URI"}
-//   any other URI serves static files from s_web_directory
+// We use the same event handler function for HTTP and HTTPS connections
+// fn_data is NULL for plain HTTP, and non-NULL for HTTPS
 static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
-  if (ev == MG_EV_HTTP_MSG) {
+  if (ev == MG_EV_ACCEPT && fn_data != NULL) {
+    struct mg_tls_opts opts = {
+        //.ca = "ca.pem",         // Uncomment to enable two-way SSL
+        .cert = "server.pem",     // Certificate PEM file
+        .certkey = "server.pem",  // This pem conains both cert and key
+    };
+    mg_tls_init(c, &opts);
+  } else if (ev == MG_EV_HTTP_MSG) {
     struct mg_http_message *hm = (struct mg_http_message *) ev_data;
     if (mg_http_match_uri(hm, "/api/f1")) {
-      mg_http_reply(c, 200, "{\"result\": %d}\n", 123);  // Serve REST response
+      mg_http_reply(c, 200, "", "{\"result\": %d}\n", 123);  // Serve REST
     } else if (mg_http_match_uri(hm, "/api/f2/*")) {
-      mg_http_reply(c, 200, "{\"result\": \"%.*s\"}\n", (int) hm->uri.len,
+      mg_http_reply(c, 200, "", "{\"result\": \"%.*s\"}\n", (int) hm->uri.len,
                     hm->uri.ptr);
     } else {
-      mg_http_serve_dir(c, ev_data, s_web_directory);  // Serve static files
+      struct mg_http_serve_opts opts = {.root_dir = s_root_dir};
+      mg_http_serve_dir(c, ev_data, &opts);
     }
   }
   (void) fn_data;
@@ -27,9 +45,11 @@ static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
 
 int main(void) {
   struct mg_mgr mgr;                            // Event manager
+  mg_log_set("2");                              // Set to 3 to enable debug
   mg_mgr_init(&mgr);                            // Initialise event manager
-  mg_http_listen(&mgr, s_listen_on, fn, NULL);  // Create HTTP listener
-  for (;;) mg_mgr_poll(&mgr, 1000);             // Infinite event loop
+  mg_http_listen(&mgr, s_http_addr, fn, NULL);  // Create HTTP listener
+  mg_http_listen(&mgr, s_https_addr, fn, (void *) 1);  // HTTPS listener
+  for (;;) mg_mgr_poll(&mgr, 1000);                    // Infinite event loop
   mg_mgr_free(&mgr);
   return 0;
 }

examples/http-restful-server/server.pem

@@ -0,0 +1,50 @@
+Certificate:
+    Data:
+        Version: 3 (0x2)
+        Serial Number:
+            6e:73:28:55:df:13:b5:61:f5:4f:4f:5d:00:d9:0a:d8:b5:3a:21:4b
+        Signature Algorithm: ecdsa-with-SHA256
+        Issuer: C = IE, L = Dublin, O = Cesanta, CN = Test Root
+        Validity
+            Not Before: May  9 21:51:49 2020 GMT
+            Not After : May  9 21:51:49 2030 GMT
+        Subject: CN = server
+        Subject Public Key Info:
+            Public Key Algorithm: id-ecPublicKey
+                Public-Key: (256 bit)
+                pub:
+                    04:92:e0:46:9c:89:c3:37:a9:74:eb:35:55:43:55:
+                    5c:ac:eb:c7:e4:50:ee:f4:c0:ba:17:02:5c:d9:ed:
+                    b4:d4:ff:21:12:9a:b4:43:f4:89:4b:69:e4:6d:2b:
+                    96:1f:fc:01:4d:30:5a:79:73:76:ba:19:41:cc:c5:
+                    16:2b:bf:74:28
+                ASN1 OID: prime256v1
+                NIST CURVE: P-256
+        X509v3 extensions:
+            X509v3 Basic Constraints: 
+                CA:FALSE
+            X509v3 Key Usage: 
+                Digital Signature, Key Encipherment, Key Agreement
+            X509v3 Extended Key Usage: 
+                TLS Web Server Authentication
+    Signature Algorithm: ecdsa-with-SHA256
+         30:46:02:21:00:fa:3a:c7:1e:cb:8c:27:59:41:8d:77:dd:7b:
+         cb:8c:08:15:16:b9:6e:70:e6:47:38:d1:55:42:e0:d7:66:c8:
+         f0:02:21:00:cc:70:4d:96:28:00:d3:c7:39:53:74:b2:49:87:
+         27:92:1b:ab:1a:0e:74:06:59:42:23:47:98:43:d8:20:a7:fa
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
+-----BEGIN PRIVATE KEY-----
+MIGHAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBG0wawIBAQQglNni0t9Dg9icgG8w
+kbfxWSS+TuNgbtNybIQXcm3NHpmhRANCAASS4EacicM3qXTrNVVDVVys68fkUO70
+wLoXAlzZ7bTU/yESmrRD9IlLaeRtK5Yf/AFNMFp5c3a6GUHMxRYrv3Qo
+-----END PRIVATE KEY-----

examples/http-reverse-proxy/Makefile

@@ -0,0 +1,19 @@
+PROG ?= example
+CFLAGS ?= -DMG_IO_SIZE=8192
+MBEDTLS_DIR ?=
+
+ifeq "$(MBEDTLS_DIR)" ""
+else
+CFLAGS += -DMG_ENABLE_MBEDTLS=1 -I$(MBEDTLS_DIR)/include -I/usr/include
+CFLAGS += -L$(MBEDTLS_DIR)/lib -lmbedtls -lmbedcrypto -lmbedx509
+endif
+
+all: $(PROG)
+	$(DEBUGGER) ./$(PROG) $(ARGS)
+
+
+$(PROG): main.c
+	$(CC) ../../mongoose.c -I../.. -W -Wall $(CFLAGS) -o $(PROG) main.c
+
+clean:
+	rm -rf $(PROG) *.o *.dSYM *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb

examples/http-reverse-proxy/ca.pem

@@ -0,0 +1,507 @@
+Subject: O=Digital Signature Trust Co., CN=DST Root CA X3
+Not Before: Sep 30 21:12:19 2000 GMT
+Not After : Sep 30 14:01:15 2021 GMT
+-----BEGIN CERTIFICATE-----
+MIIDSjCCAjKgAwIBAgIQRK+wgNajJ7qJMDmGLvhAazANBgkqhkiG9w0BAQUFADA/
+MSQwIgYDVQQKExtEaWdpdGFsIFNpZ25hdHVyZSBUcnVzdCBDby4xFzAVBgNVBAMT
+DkRTVCBSb290IENBIFgzMB4XDTAwMDkzMDIxMTIxOVoXDTIxMDkzMDE0MDExNVow
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+AN+v6ZdQCINXtMxiZfaQguzH0yxrMMpb7NnDfcdAwRgUi+DoM3ZJKuM/IUmTrE4O
+rz5Iy2Xu/NMhD2XSKtkyj4zl93ewEnu1lcCJo6m67XMuegwGMoOifooUMM0RoOEq
+OLl5CjH9UL2AZd+3UWODyOKIYepLYYHsUmu5ouJLGiifSKOeDNoJjj4XLh7dIN9b
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+aeQQmxkqtilX4+U9m5/wAl0CAwEAAaNCMEAwDwYDVR0TAQH/BAUwAwEB/zAOBgNV
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+ikugdB/OEIKcdBodfpga3csTS7MgROSR6cz8faXbauX+5v3gTt23ADq1cEmv8uXr
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+Ob8VZRzI9neWagqNdwvYkQsEjgfbKbYK7p2CNTUQ
+-----END CERTIFICATE-----
+
+Subject: C=IE, O=Baltimore, OU=CyberTrust, CN=Baltimore CyberTrust Root
+Not Before: May 12 18:46:00 2000 GMT
+Not After : May 12 23:59:00 2025 GMT
+-----BEGIN CERTIFICATE-----
+MIIDdzCCAl+gAwIBAgIEAgAAuTANBgkqhkiG9w0BAQUFADBaMQswCQYDVQQGEwJJ
+RTESMBAGA1UEChMJQmFsdGltb3JlMRMwEQYDVQQLEwpDeWJlclRydXN0MSIwIAYD
+VQQDExlCYWx0aW1vcmUgQ3liZXJUcnVzdCBSb290MB4XDTAwMDUxMjE4NDYwMFoX
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+R9I4LtD+gdwyah617jzV/OeBHRnDJELqYzmp
+-----END CERTIFICATE-----
+
+Subject: C=US, O=GeoTrust Inc., CN=GeoTrust Global CA
+Not Before: May 21 04:00:00 2002 GMT
+Not After : May 21 04:00:00 2022 GMT
+-----BEGIN CERTIFICATE-----
+MIIDVDCCAjygAwIBAgIDAjRWMA0GCSqGSIb3DQEBBQUAMEIxCzAJBgNVBAYTAlVT
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+-----END CERTIFICATE-----
+
+Subject: C=US, O=Symantec Corporation, OU=Symantec Trust Network, CN=Symantec Class 3 ECC 256 bit SSL CA - G2
+Not Before: May 12 00:00:00 2015 GMT
+Not After : May 11 23:59:59 2025 GMT
+-----BEGIN CERTIFICATE-----
+MIIEajCCA1KgAwIBAgIQP5KHvp0dpKN6nfYoLndaxDANBgkqhkiG9w0BAQsFADCB
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+-----END CERTIFICATE-----
+
+Subject: C=US, O=VeriSign, Inc., OU=VeriSign Trust Network, OU=(c) 2006 VeriSign, Inc. - For authorized use only, CN=VeriSign Class 3 Public Primary Certification Authority - G5
+Not Before: Nov  8 00:00:00 2006 GMT
+Not After : Jul 16 23:59:59 2036 GMT
+-----BEGIN CERTIFICATE-----
+MIIE0zCCA7ugAwIBAgIQGNrRniZ96LtKIVjNzGs7SjANBgkqhkiG9w0BAQUFADCB
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+-----END CERTIFICATE-----
+
+Subject: C=US, O=The Go Daddy Group, Inc., OU=Go Daddy Class 2 Certification Authority
+Not Before: Jun 29 17:06:20 2004 GMT
+Not After : Jun 29 17:06:20 2034 GMT
+-----BEGIN CERTIFICATE-----
+MIIEADCCAuigAwIBAgIBADANBgkqhkiG9w0BAQUFADBjMQswCQYDVQQGEwJVUzEh
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+-----END CERTIFICATE-----
+
+# Note: Amazon ATS endpoint uses this (2018/12/18)
+Subject: C=US, O=Starfield Technologies, Inc., OU=Starfield Class 2 Certification Authority
+Not Before: Jun 29 17:39:16 2004 GMT
+Not After : Jun 29 17:39:16 2034 GMT
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+Not Before: Sep  1 00:00:00 2009 GMT
+Not After : Dec 31 23:59:59 2037 GMT
+Subject: C=US, ST=Arizona, L=Scottsdale, O=Starfield Technologies, Inc., CN=Starfield Root Certificate Authority - G2
+-----BEGIN CERTIFICATE-----
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+
+Subject: C=US, ST=Arizona, L=Scottsdale, O=Starfield Technologies, Inc., CN=Starfield Services Root Certificate Authority - G2
+Not Before: Sep  1 00:00:00 2009 GMT
+Not After : Dec 31 23:59:59 2037 GMT
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+Subject: OU=GlobalSign Root CA - R2, O=GlobalSign, CN=GlobalSign
+Not Before: Dec 15 08:00:00 2006 GMT
+Not After : Dec 15 08:00:00 2021 GMT
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+Subject: C=US, O=DigiCert Inc, OU=www.digicert.com, CN=DigiCert High Assurance EV Root CA
+Not Before: Nov 10 00:00:00 2006 GMT
+Not After : Nov 10 00:00:00 2031 GMT
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+Subject: C=US, O=DigiCert Inc, OU=www.digicert.com, CN=DigiCert Global Root CA
+Not Before: Nov 10 00:00:00 2006 GMT
+Not After : Nov 10 00:00:00 2031 GMT
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# *.azure-devices.de use this root.
+Subject: C = DE, O = D-Trust GmbH, CN = D-TRUST Root Class 3 CA 2 2009
+Not Before: Nov  5 08:35:58 2009 GMT
+Not After : Nov  5 08:35:58 2029 GMT
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# https://www.amazontrust.com/repository/
+Subject: C = US, O = Amazon, CN = Amazon Root CA 1
+Not Before: May 26 00:00:00 2015 GMT
+Not After : Jan 17 00:00:00 2038 GMT
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+Subject: C = US, O = Amazon, CN = Amazon Root CA 2
+Not Before: May 26 00:00:00 2015 GMT
+Not After : May 26 00:00:00 2040 GMT
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+Not Before: May 26 00:00:00 2015 GMT
+Not After : May 26 00:00:00 2040 GMT
+Subject: C = US, O = Amazon, CN = Amazon Root CA 3
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+Not Before: May 26 00:00:00 2015 GMT
+Not After : May 26 00:00:00 2040 GMT
+Subject: C = US, O = Amazon, CN = Amazon Root CA 4
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+Not Before: Nov 10 00:00:00 2006 GMT
+Not After : Nov 10 00:00:00 2031 GMT
+Subject: C = US, O = DigiCert Inc, OU = www.digicert.com, CN = DigiCert Global Root CA
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+Not Before: Nov 13 00:00:00 2012 GMT
+Not After : Jan 19 03:14:07 2038 GMT
+Subject: OU = GlobalSign ECC Root CA - R4, O = GlobalSign, CN = GlobalSign
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+Not Before: Nov  1 00:00:42 2018 GMT
+Not After : Nov  1 00:00:42 2042 GMT
+Subject: C = US, O = Google Trust Services LLC, CN = GTS LTSR
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----

examples/http-reverse-proxy/main.c

@@ -0,0 +1,82 @@
+// Copyright (c) 2020 Cesanta Software Limited
+// All rights reserved
+//
+// Example HTTP reverse proxy
+//    1. Run `make`. This builds and starts a proxy on port 8000
+//    2. Start your browser, go to https://localhost:8000
+//
+// To enable SSL/TLS, build it like this:
+//    make MBEDTLS_DIR=/path/to/your/mbedtls/installation
+
+static const char *s_backend_url = "https://cesanta.com";
+static const char *s_listen_url = "http://localhost:8000";
+
+#include "mongoose.h"
+
+// Forward client request to the backend connection, rewriting the Host header
+static void forward_request(struct mg_http_message *hm,
+                            struct mg_connection *c) {
+  size_t i, max = sizeof(hm->headers) / sizeof(hm->headers[0]);
+  struct mg_str host = mg_url_host(s_backend_url);
+  mg_printf(c, "%.*s\r\n",
+            (int) (hm->proto.ptr + hm->proto.len - hm->message.ptr),
+            hm->message.ptr);
+  for (i = 0; i < max && hm->headers[i].name.len > 0; i++) {
+    struct mg_str *k = &hm->headers[i].name, *v = &hm->headers[i].value;
+    if (mg_strcmp(*k, mg_str("Host")) == 0) v = &host;
+    mg_printf(c, "%.*s: %.*s\r\n", (int) k->len, k->ptr, (int) v->len, v->ptr);
+  }
+  mg_send(c, "\r\n", 2);
+  mg_send(c, hm->body.ptr, hm->body.len);
+  LOG(LL_DEBUG, ("FORWARDING: %.*s %.*s", (int) hm->method.len, hm->method.ptr,
+                 (int) hm->uri.len, hm->uri.ptr));
+}
+
+static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
+  struct mg_connection *c2 = fn_data;
+  if (ev == MG_EV_HTTP_MSG) {
+    struct mg_http_message *hm = (struct mg_http_message *) ev_data;
+    if (c->label[0] != 'B' && c2 == NULL) {
+      // Client request, create backend connection Note that we're passing
+      // client connection `c` as fn_data for the created backend connection.
+      // This way, we tie together these two connections via `fn_data` pointer:
+      // client's c->fn_data points to the backend connection, and backend's
+      // c->fn_data points to the client connection
+      c2 = mg_connect(c->mgr, s_backend_url, fn, c);
+      c->fn_data = c2;
+      if (c2 != NULL) {
+        c2->is_hexdumping = 1;
+        c2->label[0] = 'B';  // Mark this connection as backend
+      } else {
+        c->is_closing = 1;
+      }
+    }
+    if (c2 != NULL && c2->label[0] == 'B') forward_request(hm, c2);
+  } else if (ev == MG_EV_READ) {
+    if (c->label[0] == 'B' && c2 != NULL) {
+      // All incoming data from the backend, forward to the client
+      mg_send(c2, c->recv.buf, c->recv.len);
+      mg_iobuf_delete(&c->recv, c->recv.len);
+    }
+  } else if (ev == MG_EV_CONNECT) {
+    if (mg_url_is_ssl(s_backend_url)) {
+      struct mg_tls_opts opts = {.ca = "ca.pem"};
+      mg_tls_init(c, &opts);
+    }
+  } else if (ev == MG_EV_CLOSE) {
+    if (c->label[0] != 'B' && c2 != NULL) c2->is_closing = 1;
+    c->fn_data = NULL;
+  }
+}
+
+int main(void) {
+  struct mg_mgr mgr;
+
+  mg_log_set("3");                               // Set log level
+  mg_mgr_init(&mgr);                             // Initialise event manager
+  mg_http_listen(&mgr, s_listen_url, fn, NULL);  // Start proxy
+  for (;;) mg_mgr_poll(&mgr, 1000);              // Event loop
+  mg_mgr_free(&mgr);
+
+  return 0;
+}

examples/http-server/Makefile

@@ -0,0 +1,24 @@
+PROG ?= example
+ROOT ?= $(realpath $(CURDIR)/../..)
+DEFS ?= -DMG_ENABLE_LINES=1 -DMG_ENABLE_DIRECTORY_LISTING=1 -DMG_ENABLE_SSI=1
+CFLAGS ?= -I../.. -W -Wall -DMG_ENABLE_IPV6=1 $(DEFS) $(EXTRA)
+VCFLAGS = /nologo /W3 /O2 /I../.. $(DEFS) $(EXTRA) /link /incremental:no /machine:IX86
+VC98 = docker run -it --rm -e Tmp=. -v $(ROOT):$(ROOT) -w $(CURDIR) mdashnet/vc98
+LIN = docker run -it --rm -v $(ROOT):$(ROOT) -w $(CURDIR) mdashnet/cc2
+
+all: $(PROG)
+	$(DEBUGGER) ./$(PROG) $(ARGS)
+
+$(PROG): main.c Makefile
+	$(CC) ../../mongoose.c main.c -I../.. $(CFLAGS) -o $@
+
+mongoose.exe: main.c
+	$(VC98) wine cl ../../mongoose.c main.c $(VCFLAGS) ws2_32.lib /out:$@
+
+linux: all
+linux: CFLAGS += -O2 -fsanitize=address,undefined,shift,null,return,bounds,alignment,object-size,bool,enum -static-libasan
+#linux: CC = $(LIN) cc
+#linux: DEBUGGER = $(LIN)
+
+clean:
+	rm -rf $(PROG) *.o *.dSYM *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb mongoose mongoose_* mongoose.*

examples/http-server/main.c

@@ -1,33 +1,43 @@
 // Copyright (c) 2020 Cesanta Software Limited
 // All rights reserved
 
+#include <signal.h>
 #include "mongoose.h"
 
 static const char *s_debug_level = "2";
-static const char *s_web_root_dir = ".";
+static const char *s_root_dir = ".";
 static const char *s_listening_address = "http://localhost:8000";
 static const char *s_enable_hexdump = "no";
-static const char *s_rewrites = "";
+static const char *s_ssi_pattern = "#.shtml";
 
+// Handle interrupts, like Ctrl-C
+static int s_signo;
+static void signal_handler(int signo) {
+  s_signo = signo;
+}
+
+// Event handler for the listening connection.
+// Simply serve static files from `s_root_dir`
 static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
   if (ev == MG_EV_HTTP_MSG) {
-    // struct mg_http_message *hm = (struct mg_http_message *) ev_data;
-    mg_http_serve_dir(c, ev_data, s_web_root_dir);
+    struct mg_http_serve_opts opts = {.root_dir = s_root_dir,
+                                      .ssi_pattern = s_ssi_pattern};
+    mg_http_serve_dir(c, ev_data, &opts);
   }
   (void) fn_data;
 }
 
 static void usage(const char *prog) {
   fprintf(stderr,
-          "Mongoose v.%s, built " __DATE__ " " __TIME__
-          "\nUsage: %s OPTIONS\n"
-          "  -D LEVEL  - debug level, from 0 to 4, default: '%s'\n"
+          "Mongoose v.%s\n"
+          "Usage: %s OPTIONS\n"
           "  -H yes|no - enable traffic hexdump, default: '%s'\n"
+          "  -S GLOB   - glob pattern for SSI files, default: '%s'\n"
           "  -d DIR    - directory to serve, default: '%s'\n"
           "  -l ADDR   - listening address, default: '%s'\n"
-          "  -r LIST   - list of URI=DIR,... URI rewrites, default: '%s'\n",
-          MG_VERSION, prog, s_debug_level, s_enable_hexdump, s_web_root_dir,
-          s_listening_address, s_rewrites);
+          "  -v LEVEL  - debug level, from 0 to 4, default: '%s'\n",
+          MG_VERSION, prog, s_debug_level, s_enable_hexdump, s_ssi_pattern,
+          s_root_dir, s_listening_address);
   exit(EXIT_FAILURE);
 }
 
@@ -39,21 +49,23 @@ int main(int argc, char *argv[]) {
   // Parse command-line flags
   for (i = 1; i < argc; i++) {
     if (strcmp(argv[i], "-d") == 0) {
-      s_web_root_dir = argv[++i];
-    } else if (strcmp(argv[i], "-D") == 0) {
-      s_debug_level = argv[++i];
+      s_root_dir = argv[++i];
     } else if (strcmp(argv[i], "-H") == 0) {
       s_enable_hexdump = argv[++i];
+    } else if (strcmp(argv[i], "-S") == 0) {
+      s_ssi_pattern = argv[++i];
     } else if (strcmp(argv[i], "-l") == 0) {
       s_listening_address = argv[++i];
-    } else if (strcmp(argv[i], "-r") == 0) {
-      s_rewrites = argv[++i];
+    } else if (strcmp(argv[i], "-v") == 0) {
+      s_debug_level = argv[++i];
     } else {
       usage(argv[0]);
     }
   }
 
   // Initialise stuff
+  signal(SIGINT, signal_handler);
+  signal(SIGTERM, signal_handler);
   mg_log_set(s_debug_level);
   mg_mgr_init(&mgr);
   if ((c = mg_http_listen(&mgr, s_listening_address, cb, &mgr)) == NULL) {
@@ -64,8 +76,9 @@ int main(int argc, char *argv[]) {
   if (mg_casecmp(s_enable_hexdump, "yes") == 0) c->is_hexdumping = 1;
 
   // Start infinite event loop
-  LOG(LL_INFO, ("Starting Mongoose web server v%s", MG_VERSION));
-  for (;;) mg_mgr_poll(&mgr, 1000);
+  LOG(LL_INFO, ("Starting Mongoose v%s, serving [%s]", MG_VERSION, s_root_dir));
+  while (s_signo == 0) mg_mgr_poll(&mgr, 1000);
   mg_mgr_free(&mgr);
+  LOG(LL_INFO, ("Exiting on signal %d", s_signo));
   return 0;
 }

examples/http-streaming-client/Makefile

@@ -0,0 +1,22 @@
+PROG ?= example
+CFLAGS ?= -DMG_ENABLE_LINES $(EXTRA)
+
+ifneq ($(MBEDTLS),)
+CFLAGS += -DMG_ENABLE_MBEDTLS=1 -I$(MBEDTLS)/include -I/usr/include
+CFLAGS += -L$(MBEDTLS)/lib -lmbedtls -lmbedcrypto -lmbedx509
+endif
+
+ifneq ($(OPENSSL),)
+CFLAGS += -DMG_ENABLE_OPENSSL=1 -I$(OPENSSL)/include
+CFLAGS += -L$(OPENSSL)/lib -lssl -lcrypto
+endif
+
+all: $(PROG)
+	$(DEBUGGER) ./$(PROG) $(ARGS)
+
+
+$(PROG): main.c
+	$(CC) ../../mongoose.c -I../.. -W -Wall $(CFLAGS) -o $(PROG) main.c
+
+clean:
+	rm -rf $(PROG) *.o *.dSYM *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb

examples/http-streaming-client/ca.pem

@@ -0,0 +1,507 @@
+Subject: O=Digital Signature Trust Co., CN=DST Root CA X3
+Not Before: Sep 30 21:12:19 2000 GMT
+Not After : Sep 30 14:01:15 2021 GMT
+-----BEGIN CERTIFICATE-----
+MIIDSjCCAjKgAwIBAgIQRK+wgNajJ7qJMDmGLvhAazANBgkqhkiG9w0BAQUFADA/
+MSQwIgYDVQQKExtEaWdpdGFsIFNpZ25hdHVyZSBUcnVzdCBDby4xFzAVBgNVBAMT
+DkRTVCBSb290IENBIFgzMB4XDTAwMDkzMDIxMTIxOVoXDTIxMDkzMDE0MDExNVow
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+AN+v6ZdQCINXtMxiZfaQguzH0yxrMMpb7NnDfcdAwRgUi+DoM3ZJKuM/IUmTrE4O
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+ikugdB/OEIKcdBodfpga3csTS7MgROSR6cz8faXbauX+5v3gTt23ADq1cEmv8uXr
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+Ob8VZRzI9neWagqNdwvYkQsEjgfbKbYK7p2CNTUQ
+-----END CERTIFICATE-----
+
+Subject: C=IE, O=Baltimore, OU=CyberTrust, CN=Baltimore CyberTrust Root
+Not Before: May 12 18:46:00 2000 GMT
+Not After : May 12 23:59:00 2025 GMT
+-----BEGIN CERTIFICATE-----
+MIIDdzCCAl+gAwIBAgIEAgAAuTANBgkqhkiG9w0BAQUFADBaMQswCQYDVQQGEwJJ
+RTESMBAGA1UEChMJQmFsdGltb3JlMRMwEQYDVQQLEwpDeWJlclRydXN0MSIwIAYD
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+-----END CERTIFICATE-----
+
+Subject: C=US, O=GeoTrust Inc., CN=GeoTrust Global CA
+Not Before: May 21 04:00:00 2002 GMT
+Not After : May 21 04:00:00 2022 GMT
+-----BEGIN CERTIFICATE-----
+MIIDVDCCAjygAwIBAgIDAjRWMA0GCSqGSIb3DQEBBQUAMEIxCzAJBgNVBAYTAlVT
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+5fEWCRE11azbJHFwLJhWC9kXtNHjUStedejV0NxPNO3CBWaAocvmMw==
+-----END CERTIFICATE-----
+
+Subject: C=US, O=Symantec Corporation, OU=Symantec Trust Network, CN=Symantec Class 3 ECC 256 bit SSL CA - G2
+Not Before: May 12 00:00:00 2015 GMT
+Not After : May 11 23:59:59 2025 GMT
+-----BEGIN CERTIFICATE-----
+MIIEajCCA1KgAwIBAgIQP5KHvp0dpKN6nfYoLndaxDANBgkqhkiG9w0BAQsFADCB
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+-----END CERTIFICATE-----
+
+Subject: C=US, O=VeriSign, Inc., OU=VeriSign Trust Network, OU=(c) 2006 VeriSign, Inc. - For authorized use only, CN=VeriSign Class 3 Public Primary Certification Authority - G5
+Not Before: Nov  8 00:00:00 2006 GMT
+Not After : Jul 16 23:59:59 2036 GMT
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+Subject: C=US, O=The Go Daddy Group, Inc., OU=Go Daddy Class 2 Certification Authority
+Not Before: Jun 29 17:06:20 2004 GMT
+Not After : Jun 29 17:06:20 2034 GMT
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Note: Amazon ATS endpoint uses this (2018/12/18)
+Subject: C=US, O=Starfield Technologies, Inc., OU=Starfield Class 2 Certification Authority
+Not Before: Jun 29 17:39:16 2004 GMT
+Not After : Jun 29 17:39:16 2034 GMT
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+Not Before: Sep  1 00:00:00 2009 GMT
+Not After : Dec 31 23:59:59 2037 GMT
+Subject: C=US, ST=Arizona, L=Scottsdale, O=Starfield Technologies, Inc., CN=Starfield Root Certificate Authority - G2
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+Subject: C=US, ST=Arizona, L=Scottsdale, O=Starfield Technologies, Inc., CN=Starfield Services Root Certificate Authority - G2
+Not Before: Sep  1 00:00:00 2009 GMT
+Not After : Dec 31 23:59:59 2037 GMT
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+Subject: OU=GlobalSign Root CA - R2, O=GlobalSign, CN=GlobalSign
+Not Before: Dec 15 08:00:00 2006 GMT
+Not After : Dec 15 08:00:00 2021 GMT
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+Subject: C=US, O=DigiCert Inc, OU=www.digicert.com, CN=DigiCert High Assurance EV Root CA
+Not Before: Nov 10 00:00:00 2006 GMT
+Not After : Nov 10 00:00:00 2031 GMT
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+Subject: C=US, O=DigiCert Inc, OU=www.digicert.com, CN=DigiCert Global Root CA
+Not Before: Nov 10 00:00:00 2006 GMT
+Not After : Nov 10 00:00:00 2031 GMT
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# *.azure-devices.de use this root.
+Subject: C = DE, O = D-Trust GmbH, CN = D-TRUST Root Class 3 CA 2 2009
+Not Before: Nov  5 08:35:58 2009 GMT
+Not After : Nov  5 08:35:58 2029 GMT
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# https://www.amazontrust.com/repository/
+Subject: C = US, O = Amazon, CN = Amazon Root CA 1
+Not Before: May 26 00:00:00 2015 GMT
+Not After : Jan 17 00:00:00 2038 GMT
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+Subject: C = US, O = Amazon, CN = Amazon Root CA 2
+Not Before: May 26 00:00:00 2015 GMT
+Not After : May 26 00:00:00 2040 GMT
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+Not Before: May 26 00:00:00 2015 GMT
+Not After : May 26 00:00:00 2040 GMT
+Subject: C = US, O = Amazon, CN = Amazon Root CA 3
+-----BEGIN CERTIFICATE-----
+MIIBtjCCAVugAwIBAgITBmyf1XSXNmY/Owua2eiedgPySjAKBggqhkjOPQQDAjA5
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+-----END CERTIFICATE-----
+
+Not Before: May 26 00:00:00 2015 GMT
+Not After : May 26 00:00:00 2040 GMT
+Subject: C = US, O = Amazon, CN = Amazon Root CA 4
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+Not Before: Nov 10 00:00:00 2006 GMT
+Not After : Nov 10 00:00:00 2031 GMT
+Subject: C = US, O = DigiCert Inc, OU = www.digicert.com, CN = DigiCert Global Root CA
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+Not Before: Nov 13 00:00:00 2012 GMT
+Not After : Jan 19 03:14:07 2038 GMT
+Subject: OU = GlobalSign ECC Root CA - R4, O = GlobalSign, CN = GlobalSign
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+Not Before: Nov  1 00:00:42 2018 GMT
+Not After : Nov  1 00:00:42 2042 GMT
+Subject: C = US, O = Google Trust Services LLC, CN = GTS LTSR
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----

examples/http-streaming-client/main.c

@@ -0,0 +1,65 @@
+// Copyright (c) 2021 Cesanta Software Limited
+// All rights reserved
+//
+// Example HTTP client.
+// Instead of buffering the whole HTTP response in memory and wait for the
+// MG_EV_HTTP_MSG event, this client catches MG_EV_HTTP_CHUNK events and
+// prints them. This is useful to download large content without spooling
+// everything to memory, or catch chunked content.
+//
+// You can change `s_url` from the command line by executing: ./example YOUR_URL
+//
+// To enable SSL/TLS for this client, build it like this:
+//    make MBEDTLS=/path/to/your/mbedtls/installation
+//    make OPENSSL=/path/to/your/openssl/installation
+
+#include "mongoose.h"
+
+// The very first web page in history. You can replace it from command line
+static const char *s_url = "http://info.cern.ch";
+
+// Print HTTP response and signal that we're done
+static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
+  if (ev == MG_EV_CONNECT) {
+    // Connected to server. Extract host name from URL
+    struct mg_str host = mg_url_host(s_url);
+
+    // If s_url is https://, tell client connection to use TLS
+    if (mg_url_is_ssl(s_url)) {
+      struct mg_tls_opts opts = {.ca = "ca.pem", .srvname = host};
+      mg_tls_init(c, &opts);
+    }
+
+    // Send request
+    mg_printf(c,
+              "GET %s HTTP/1.0\r\n"
+              "Host: %.*s\r\n"
+              "\r\n",
+              mg_url_uri(s_url), (int) host.len, host.ptr);
+  } else if (ev == MG_EV_HTTP_CHUNK) {
+    struct mg_http_message *hm = (struct mg_http_message *) ev_data;
+    LOG(LL_INFO, ("%.*s", (int) hm->chunk.len, hm->chunk.ptr));
+    mg_http_delete_chunk(c, hm);
+    if (hm->chunk.len == 0) *(bool *) fn_data = true;  // Last chunk
+  } else if (ev == MG_EV_HTTP_MSG) {
+    // Response is received. Print it
+    struct mg_http_message *hm = (struct mg_http_message *) ev_data;
+    LOG(LL_INFO, ("%.*s", (int) hm->body.len, hm->body.ptr));
+    c->is_closing = 1;         // Tell mongoose to close this connection
+    *(bool *) fn_data = true;  // Tell event loop to stop
+  } else if (ev == MG_EV_ERROR) {
+    *(bool *) fn_data = true;  // Error, tell event loop to stop
+  }
+}
+
+int main(int argc, char *argv[]) {
+  struct mg_mgr mgr;                        // Event manager
+  bool done = false;                        // Event handler flips it to true
+  if (argc > 1) s_url = argv[1];            // Use URL from command line
+  mg_log_set("3");                          // Set to 0 to disable debug
+  mg_mgr_init(&mgr);                        // Initialise event manager
+  mg_http_connect(&mgr, s_url, fn, &done);  // Create client connection
+  while (!done) mg_mgr_poll(&mgr, 1000);    // Infinite event loop
+  mg_mgr_free(&mgr);                        // Free resources
+  return 0;
+}

examples/live-log/main.c

@@ -11,12 +11,13 @@ static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
   if (ev == MG_EV_HTTP_MSG) {
     struct mg_http_message *hm = (struct mg_http_message *) ev_data;
     if (mg_http_match_uri(hm, "/api/log/static")) {
-      mg_http_serve_file(c, hm, "log.txt", "text/plain");
+      mg_http_serve_file(c, hm, "log.txt", "text/plain", "");
     } else if (mg_http_match_uri(hm, "/api/log/live")) {
       c->label[0] = 'L';  // Mark that connection as live log listener
       mg_printf(c, "HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n");
     } else {
-      mg_http_serve_dir(c, ev_data, "web_root");
+      struct mg_http_serve_opts opts = {.root_dir = "web_root"};
+      mg_http_serve_dir(c, ev_data, &opts);
     }
   }
 }

examples/mqtt-client/main.c

@@ -18,7 +18,7 @@ static const char *s_topic = "mg/test";
 static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
   if (ev == MG_EV_ERROR) {
     // On error, log error message
-    LOG(LL_ERROR, ("%p %s", c->fd, ev_data));
+    LOG(LL_ERROR, ("%p %s", c->fd, (char *) ev_data));
   } else if (ev == MG_EV_CONNECT) {
     // If target URL is SSL/TLS, command client connection to use TLS
     if (mg_url_is_ssl(s_url)) {
@@ -29,9 +29,9 @@ static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
     // MQTT connect is successful
     struct mg_str topic = mg_str(s_topic), data = mg_str("hello");
     LOG(LL_INFO, ("CONNECTED to %s", s_url));
-    mg_mqtt_sub(c, &topic);
+    mg_mqtt_sub(c, &topic, 1);
     LOG(LL_INFO, ("SUBSCRIBED to %.*s", (int) topic.len, topic.ptr));
-    mg_mqtt_pub(c, &topic, &data);
+    mg_mqtt_pub(c, &topic, &data, 1, false);
     LOG(LL_INFO, ("PUBSLISHED %.*s -> %.*s", (int) data.len, data.ptr,
                   (int) topic.len, topic.ptr));
   } else if (ev == MG_EV_MQTT_MSG) {
@@ -47,16 +47,16 @@ static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
 }
 
 int main(void) {
-  struct mg_mgr mgr;         // Event manager
-  struct mg_mqtt_opts opts;  // MQTT connection options
-  bool done = false;         // Event handler flips it to true when done
-  mg_mgr_init(&mgr);         // Initialise event manager
-  memset(&opts, 0, sizeof(opts));                 // Set MQTT options
-  opts.qos = 1;                                   // Set QoS to 1
-  opts.will_topic = mg_str(s_topic);              // Set last will topic
-  opts.will_message = mg_str("goodbye");          // And last will message
+  struct mg_mgr mgr;               // Event manager
+  struct mg_mqtt_opts opts;        // MQTT connection options
+  bool done = false;               // Event handler flips it to true when done
+  mg_mgr_init(&mgr);               // Initialise event manager
+  memset(&opts, 0, sizeof(opts));  // Set MQTT options
+  opts.qos = 1;                    // Set QoS to 1
+  opts.will_topic = mg_str(s_topic);               // Set last will topic
+  opts.will_message = mg_str("goodbye");           // And last will message
   mg_mqtt_connect(&mgr, s_url, &opts, fn, &done);  // Create client connection
-  while (done == false) mg_mgr_poll(&mgr, 1000);  // Event loop
-  mg_mgr_free(&mgr);                              // Finished, cleanup
+  while (done == false) mg_mgr_poll(&mgr, 1000);   // Event loop
+  mg_mgr_free(&mgr);                               // Finished, cleanup
   return 0;
 }

examples/mqtt-server/Makefile

@@ -0,0 +1,10 @@
+PROG ?= example
+
+all: $(PROG)
+	$(DEBUGGER) ./$(PROG) $(ARGS)
+
+$(PROG): main.c
+	$(CC) ../../mongoose.c -I../.. -W -Wall -DMG_ENABLE_LINES=1 $(CFLAGS) -o $(PROG) main.c
+
+clean:
+	rm -rf $(PROG) *.o *.dSYM *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb

examples/mqtt-server/main.c

@@ -0,0 +1,83 @@
+// Copyright (c) 2020 Cesanta Software Limited
+// All rights reserved
+//
+// Example MQTT server. Usage:
+//  1. Start this server, type `make`
+//  2. Install mosquitto MQTT client
+//  3. In one terminal, run:   mosquitto_sub -h localhost -t foo -t bar
+//  4. In another, run:        mosquitto_pub -h localhost -t foo -m hi
+
+#include "mongoose.h"
+
+static const char *s_listen_on = "mqtt://0.0.0.0:1883";
+
+// A list of subscription, held in memory
+struct sub {
+  struct sub *next;
+  struct mg_connection *c;
+  struct mg_str topic;
+  uint8_t qos;
+};
+static struct sub *s_subs = NULL;
+
+// Event handler function
+static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
+  if (ev == MG_EV_MQTT_CMD) {
+    struct mg_mqtt_message *mm = (struct mg_mqtt_message *) ev_data;
+    LOG(LL_DEBUG, ("cmd %d qos %d", mm->cmd, mm->qos));
+    switch (mm->cmd) {
+      case MQTT_CMD_CONNECT: {
+        // Client connects. Return success, do not check user/password
+        uint8_t response[] = {0, 0};
+        mg_mqtt_send_header(c, MQTT_CMD_CONNACK, 0, sizeof(response));
+        mg_send(c, response, sizeof(response));
+        break;
+      }
+      case MQTT_CMD_SUBSCRIBE: {
+        // Client subscribes
+        int pos = 4;  // Initial topic offset, where ID ends
+        uint8_t qos;
+        struct mg_str topic;
+        while ((pos = mg_mqtt_next_sub(mm, &topic, &qos, pos)) > 0) {
+          struct sub *sub = calloc(1, sizeof(*sub));
+          sub->c = c;
+          sub->topic = mg_strdup(topic);
+          sub->qos = qos;
+          LIST_ADD_HEAD(struct sub, &s_subs, sub);
+          LOG(LL_INFO,
+              ("SUB %p [%.*s]", c->fd, (int) sub->topic.len, sub->topic.ptr));
+        }
+        break;
+      }
+      case MQTT_CMD_PUBLISH: {
+        // Client published message. Push to all subscribed channels
+        LOG(LL_INFO, ("PUB %p [%.*s] -> [%.*s]", c->fd, (int) mm->data.len,
+                      mm->data.ptr, (int) mm->topic.len, mm->topic.ptr));
+        for (struct sub *sub = s_subs; sub != NULL; sub = sub->next) {
+          if (mg_strcmp(mm->topic, sub->topic) != 0) continue;
+          mg_mqtt_pub(sub->c, &mm->topic, &mm->data, 1, false);
+        }
+        break;
+      }
+    }
+  } else if (ev == MG_EV_CLOSE) {
+    // Client disconnects. Remove from the subscription list
+    for (struct sub *next, *sub = s_subs; sub != NULL; sub = next) {
+      next = sub->next;
+      if (c != sub->c) continue;
+      LOG(LL_INFO,
+          ("UNSUB %p [%.*s]", c->fd, (int) sub->topic.len, sub->topic.ptr));
+      LIST_DELETE(struct sub, &s_subs, sub);
+    }
+  }
+  (void) fn_data;
+}
+
+int main(void) {
+  struct mg_mgr mgr;                            // Event manager
+  mg_mgr_init(&mgr);                            // Initialise event manager
+  mg_mqtt_listen(&mgr, s_listen_on, fn, NULL);  // Create MQTT listener
+  for (;;) mg_mgr_poll(&mgr, 1000);             // Infinite event loop
+  mg_mgr_free(&mgr);
+  return 0;
+}

examples/multi-threaded/main.c

@@ -31,20 +31,11 @@ struct response {
 #define SLEEP_TIME 3  // Seconds to sleep to simulate calculation
 #endif
 
-static void thread_function(void *param) {
-  int sock = (long) param;                   // Grab our blocking socket
-  struct response r = {strdup("hello"), 5};  // Create response
-  sleep(SLEEP_TIME);                         // Simulate long execution
-  send(sock, (void *) &r, sizeof(r), 0);     // Send to request handler
-  close(sock);                               // Done, close socket, end thread
-}
-
 static void start_thread(void (*f)(void *), void *p) {
-#ifdef WINCE
-  CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE) f, p, 0, NULL);
-#elif defined(_WIN32)
+#ifdef _WIN32
   _beginthread((void(__cdecl *)(void *)) f, 0, p);
 #else
+#define closesocket(x) close(x)
 #include <pthread.h>
   pthread_t thread_id = (pthread_t) 0;
   pthread_attr_t attr;
@@ -55,6 +46,15 @@ static void start_thread(void (*f)(void *), void *p) {
 #endif
 }
 
+static void thread_function(void *param) {
+  int sock = (long) param;                     // Grab our blocking socket
+  struct response r = {strdup("hello\n"), 6};  // Create response
+  mg_usleep(SLEEP_TIME * 1000000);             // Simulate long execution
+  LOG(LL_INFO, ("got sock %d", sock));         // For debugging
+  send(sock, (void *) &r, sizeof(r), 0);       // Send to request handler
+  closesocket(sock);                           // Done, close socket, end thread
+}
+
 // HTTP request callback
 static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
   if (ev == MG_EV_HTTP_MSG) {
@@ -70,7 +70,7 @@ static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
                 "Content-Length: 3\r\n\r\n"  // Set to allow keep-alive
                 "hi\n");
     } else {
-      int blocking, non_blocking;
+      int blocking = -1, non_blocking = -1;
       mg_socketpair(&blocking, &non_blocking);  // Create connected pair
 
       // Pass blocking socket to the thread_function.
@@ -82,7 +82,7 @@ static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
     }
   } else if (ev == MG_EV_POLL && c->fn_data != NULL) {
     // On each poll iteration, try to receive response data
-    int sock = (int) c->fn_data;
+    int sock = (int) (long) c->fn_data;
     struct response response = {NULL, 0};
     if (recv(sock, (void *) &response, sizeof(response), 0) ==
         sizeof(response)) {
@@ -90,7 +90,7 @@ static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
       mg_printf(c, "HTTP/1.0 200 OK\r\nContent-Length: %d\r\n\r\n%.*s",
                 response.len, response.len, response.data);
       free(response.data);  // We can free produced data now
-      close(sock);          // And close our end of the socket pair
+      closesocket(sock);    // And close our end of the socket pair
       c->fn_data = NULL;
     }
   }

examples/multiple-logins/main.c

@@ -71,7 +71,8 @@ static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
                            u->token);
       mg_http_printf_chunk(c, "");
     } else {
-      mg_http_serve_dir(c, ev_data, "web_root");
+      struct mg_http_serve_opts opts = {.root_dir = "web_root"};
+      mg_http_serve_dir(c, ev_data, &opts);
     }
   }
 }

examples/multiple-logins/web_root/axios.min.js

@@ -1,9 +1,3 @@
-/* axios v0.19.0-beta.1 | (c) 2018 by Matt Zabriskie */
-!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define([],t):"object"==typeof exports?exports.axios=t():e.axios=t()}(this,function(){return function(e){function t(r){if(n[r])return n[r].exports;var o=n[r]={exports:{},id:r,loaded:!1};return e[r].call(o.exports,o,o.exports,t),o.loaded=!0,o.exports}var n={};return t.m=e,t.c=n,t.p="",t(0)}([function(e,t,n){e.exports=n(1)},function(e,t,n){"use strict";function r(e){var t=new i(e),n=s(i.prototype.request,t);return o.extend(n,i.prototype,t),o.extend(n,t),n}var o=n(2),s=n(3),i=n(5),a=n(22),u=n(11),c=r(u);c.Axios=i,c.create=function(e){return r(a(c.defaults,e))},c.Cancel=n(23),c.CancelToken=n(24),c.isCancel=n(10),c.all=function(e){return Promise.all(e)},c.spread=n(25),e.exports=c,e.exports.default=c},function(e,t,n){"use strict";function r(e){return"[object Array]"===j.call(e)}function o(e){return"[object ArrayBuffer]"===j.call(e)}function s(e){return"undefined"!=typeof FormData&&e instanceof FormData}function i(e){var t;return t="undefined"!=typeof ArrayBuffer&&ArrayBuffer.isView?ArrayBuffer.isView(e):e&&e.buffer&&e.buffer instanceof ArrayBuffer}function a(e){return"string"==typeof e}function u(e){return"number"==typeof e}function c(e){return"undefined"==typeof e}function f(e){return null!==e&&"object"==typeof e}function p(e){return"[object Date]"===j.call(e)}function d(e){return"[object File]"===j.call(e)}function l(e){return"[object Blob]"===j.call(e)}function h(e){return"[object Function]"===j.call(e)}function m(e){return f(e)&&h(e.pipe)}function y(e){return"undefined"!=typeof URLSearchParams&&e instanceof URLSearchParams}function g(e){return e.replace(/^\s*/,"").replace(/\s*$/,"")}function x(){return("undefined"==typeof navigator||"ReactNative"!==navigator.product&&"NativeScript"!==navigator.product&&"NS"!==navigator.product)&&("undefined"!=typeof window&&"undefined"!=typeof document)}function v(e,t){if(null!==e&&"undefined"!=typeof e)if("object"!=typeof e&&(e=[e]),r(e))for(var n=0,o=e.length;n<o;n++)t.call(null,e[n],n,e);else for(var s in e)Object.prototype.hasOwnProperty.call(e,s)&&t.call(null,e[s],s,e)}function w(){function e(e,n){"object"==typeof t[n]&&"object"==typeof e?t[n]=w(t[n],e):t[n]=e}for(var t={},n=0,r=arguments.length;n<r;n++)v(arguments[n],e);return t}function b(){function e(e,n){"object"==typeof t[n]&&"object"==typeof e?t[n]=b(t[n],e):"object"==typeof e?t[n]=b({},e):t[n]=e}for(var t={},n=0,r=arguments.length;n<r;n++)v(arguments[n],e);return t}function E(e,t,n){return v(t,function(t,r){n&&"function"==typeof t?e[r]=S(t,n):e[r]=t}),e}var S=n(3),R=n(4),j=Object.prototype.toString;e.exports={isArray:r,isArrayBuffer:o,isBuffer:R,isFormData:s,isArrayBufferView:i,isString:a,isNumber:u,isObject:f,isUndefined:c,isDate:p,isFile:d,isBlob:l,isFunction:h,isStream:m,isURLSearchParams:y,isStandardBrowserEnv:x,forEach:v,merge:w,deepMerge:b,extend:E,trim:g}},function(e,t){"use strict";e.exports=function(e,t){return function(){for(var n=new Array(arguments.length),r=0;r<n.length;r++)n[r]=arguments[r];return e.apply(t,n)}}},function(e,t){/*!
-	 * Determine if an object is a Buffer
-	 *
-	 * @author   Feross Aboukhadijeh <https://feross.org>
-	 * @license  MIT
-	 */
-e.exports=function(e){return null!=e&&null!=e.constructor&&"function"==typeof e.constructor.isBuffer&&e.constructor.isBuffer(e)}},function(e,t,n){"use strict";function r(e){this.defaults=e,this.interceptors={request:new i,response:new i}}var o=n(2),s=n(6),i=n(7),a=n(8),u=n(22);r.prototype.request=function(e){"string"==typeof e?(e=arguments[1]||{},e.url=arguments[0]):e=e||{},e=u(this.defaults,e),e.method=e.method?e.method.toLowerCase():"get";var t=[a,void 0],n=Promise.resolve(e);for(this.interceptors.request.forEach(function(e){t.unshift(e.fulfilled,e.rejected)}),this.interceptors.response.forEach(function(e){t.push(e.fulfilled,e.rejected)});t.length;)n=n.then(t.shift(),t.shift());return n},r.prototype.getUri=function(e){return e=u(this.defaults,e),s(e.url,e.params,e.paramsSerializer).replace(/^\?/,"")},o.forEach(["delete","get","head","options"],function(e){r.prototype[e]=function(t,n){return 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+/* axios v0.21.1 | (c) 2020 by Matt Zabriskie */
+!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define([],t):"object"==typeof exports?exports.axios=t():e.axios=t()}(this,function(){return function(e){function t(r){if(n[r])return n[r].exports;var o=n[r]={exports:{},id:r,loaded:!1};return e[r].call(o.exports,o,o.exports,t),o.loaded=!0,o.exports}var n={};return t.m=e,t.c=n,t.p="",t(0)}([function(e,t,n){e.exports=n(1)},function(e,t,n){"use strict";function r(e){var t=new i(e),n=s(i.prototype.request,t);return o.extend(n,i.prototype,t),o.extend(n,t),n}var o=n(2),s=n(3),i=n(4),a=n(22),u=n(10),c=r(u);c.Axios=i,c.create=function(e){return r(a(c.defaults,e))},c.Cancel=n(23),c.CancelToken=n(24),c.isCancel=n(9),c.all=function(e){return Promise.all(e)},c.spread=n(25),c.isAxiosError=n(26),e.exports=c,e.exports.default=c},function(e,t,n){"use strict";function r(e){return"[object Array]"===R.call(e)}function o(e){return"undefined"==typeof e}function s(e){return 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 //# sourceMappingURL=axios.min.map

examples/socks5-server/Makefile

@@ -0,0 +1,19 @@
+PROG ?= example
+CFLAGS ?= -DMG_ENABLE_LINES $(CFLAGS_EXTRA)
+MBEDTLS_DIR ?=
+
+ifeq "$(MBEDTLS_DIR)" ""
+else
+CFLAGS += -DMG_ENABLE_MBEDTLS=1 -I$(MBEDTLS_DIR)/include -I/usr/include
+CFLAGS += -L$(MBEDTLS_DIR)/lib -lmbedtls -lmbedcrypto -lmbedx509
+endif
+
+all: $(PROG)
+	$(DEBUGGER) ./$(PROG) $(ARGS)
+
+
+$(PROG): main.c
+	$(CC) ../../mongoose.c -I../.. -W -Wall $(CFLAGS) -o $(PROG) main.c
+
+clean:
+	rm -rf $(PROG) *.o *.dSYM *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb

examples/socks5-server/main.c

@@ -0,0 +1,173 @@
+// Copyright (c) 2020 Cesanta Software Limited
+// All rights reserved
+//
+// Example socks5 server. To test,
+//   1. Run `make` to start this server on port 1080
+//   2. Run `curl`
+
+#include "mongoose.h"
+
+static const char *s_lsn = "tcp://localhost:1080";  // Listening address
+
+enum {
+  VERSION = 5,                  // Socks protocol version
+  STATE_HANDSHAKE = 0,          // Connection state: in handshake
+  STATE_REQUEST = 1,            // Connection state: connecting
+  STATE_ESTABLISHED = 2,        // Connection state: established
+  HANDSHAKE_NOAUTH = 0,         // Handshake method - no authentication
+  HANDSHAKE_GSSAPI = 1,         // Handshake method - GSSAPI auth
+  HANDSHAKE_USERPASS = 2,       // Handshake method - user/password auth
+  HANDSHAKE_FAILURE = 0xff,     // Handshake method - failure
+  CMD_CONNECT = 1,              // Command: CONNECT
+  CMD_BIND = 2,                 // Command: BIND
+  CMD_UDP_ASSOCIATE = 3,        // Command: UDP ASSOCIATE
+  ADDR_TYPE_IPV4 = 1,           // Address type: IPv4
+  ADDR_TYPE_DOMAIN = 3,         // Address type: Domain name
+  ADDR_TYPE_IPV6 = 4,           // Address type: IPv6
+  RESP_SUCCESS = 0,             // Response: success
+  RESP_FAILURE = 1,             // Response: failure
+  RESP_NOT_ALLOWED = 2,         // Response status
+  RESP_NET_UNREACHABLE = 3,     // Response status
+  RESP_HOST_UNREACHABLE = 4,    // Response status
+  RESP_CONN_REFUSED = 5,        // Response status
+  RESP_TTL_EXPIRED = 6,         // Response status
+  RESP_CMD_NOT_SUPPORTED = 7,   // Response status
+  RESP_ADDR_NOT_SUPPORTED = 8,  // Response status
+};
+
+//  https://www.ietf.org/rfc/rfc1928.txt paragraph 3, handle client handshake
+//  +----+----------+----------+
+//  |VER | NMETHODS | METHODS  |
+//  +----+----------+----------+
+//  | 1  |    1     | 1 to 255 |
+//  +----+----------+----------+
+static void handshake(struct mg_connection *c) {
+  struct mg_iobuf *r = &c->recv;
+  if (r->buf[0] != VERSION) {
+    c->is_closing = 1;
+  } else if (r->len > 2 && (size_t) r->buf[1] + 2 <= r->len) {
+    /* https://www.ietf.org/rfc/rfc1928.txt paragraph 3 */
+    uint8_t reply[2] = {VERSION, HANDSHAKE_FAILURE};
+    int i;
+    for (i = 2; i < r->buf[1] + 2; i++) {
+      // TODO(lsm): support other auth methods
+      if (r->buf[i] == HANDSHAKE_NOAUTH) reply[1] = r->buf[i];
+    }
+    mg_iobuf_delete(r, 2 + r->buf[1]);
+    mg_send(c, reply, sizeof(reply));
+    c->label[0] = STATE_REQUEST;
+  }
+}
+
+static void disband(struct mg_connection *c) {
+  struct mg_connection *c2 = (struct mg_connection *) c->fn_data;
+  if (c2 != NULL) {
+    c2->is_draining = 1;
+    c2->fn_data = NULL;
+  }
+  c->is_draining = 1;
+  c->fn_data = NULL;
+}
+
+static void exchange(struct mg_connection *c) {
+  struct mg_connection *c2 = (struct mg_connection *) c->fn_data;
+  if (c2 != NULL) {
+    mg_send(c2, c->recv.buf, c->recv.len);
+    mg_iobuf_delete(&c->recv, c->recv.len);
+  } else {
+    c->is_draining = 1;
+  }
+}
+
+static void fn2(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
+  if (ev == MG_EV_READ) {
+    exchange(c);
+  } else if (ev == MG_EV_CLOSE) {
+    disband(c);
+  }
+  (void) ev_data;
+  (void) fn_data;
+}
+
+//  Request, https://www.ietf.org/rfc/rfc1928.txt paragraph 4
+//  +----+-----+-------+------+----------+----------+
+//  |VER | CMD |  RSV  | ATYP | DST.ADDR | DST.PORT |
+//  +----+-----+-------+------+----------+----------+
+//  | 1  |  1  | X'00' |  1   | Variable |    2     |
+//  +----+-----+-------+------+----------+----------+
+static void request(struct mg_connection *c) {
+  struct mg_iobuf *r = &c->recv;
+  uint8_t *p = r->buf, addr_len = 4, reply = RESP_SUCCESS;
+  int ver, cmd, atyp;
+  char addr[1024];
+
+  if (r->len < 8) return;  // return if not fully buffered. min DST.ADDR is 2
+  ver = p[0];
+  cmd = p[1];
+  atyp = p[3];
+
+  // TODO(lsm): support other commands
+  if (ver != VERSION || cmd != CMD_CONNECT) {
+    reply = RESP_CMD_NOT_SUPPORTED;
+  } else if (atyp == ADDR_TYPE_IPV4) {
+    addr_len = 4;
+    if (r->len < (size_t) addr_len + 6) return; /* return if not buffered */
+    snprintf(addr, sizeof(addr), "tcp://%d.%d.%d.%d:%d", p[4], p[5], p[6], p[7],
+             p[8] << 8 | p[9]);
+    c->fn_data = mg_connect(c->mgr, addr, fn2, c);
+  } else if (atyp == ADDR_TYPE_IPV6) {
+    addr_len = 16;
+    if (r->len < (size_t) addr_len + 6) return; /* return if not buffered */
+    snprintf(addr, sizeof(addr), "tcp://[%x:%x:%x:%x:%x:%x:%x:%x]:%d",
+             p[4] << 8 | p[5], p[6] << 8 | p[7], p[8] << 8 | p[9],
+             p[10] << 8 | p[11], p[12] << 8 | p[13], p[14] << 8 | p[15],
+             p[16] << 8 | p[17], p[18] << 8 | p[19], p[20] << 8 | p[21]);
+    c->fn_data = mg_connect(c->mgr, addr, fn2, c);
+  } else if (atyp == ADDR_TYPE_DOMAIN) {
+    addr_len = p[4] + 1;
+    if (r->len < (size_t) addr_len + 6) return; /* return if not buffered */
+    snprintf(addr, sizeof(addr), "tcp://%.*s:%d", p[4], p + 5,
+             p[4 + addr_len] << 8 | p[4 + addr_len + 1]);
+    c->fn_data = mg_connect(c->mgr, addr, fn2, c);
+  } else {
+    reply = RESP_ADDR_NOT_SUPPORTED;
+  }
+
+  //  Reply, https://www.ietf.org/rfc/rfc1928.txt paragraph 5
+  //
+  //  +----+-----+-------+------+----------+----------+
+  //  |VER | REP |  RSV  | ATYP | BND.ADDR | BND.PORT |
+  //  +----+-----+-------+------+----------+----------+
+  //  | 1  |  1  | X'00' |  1   | Variable |    2     |
+  //  +----+-----+-------+------+----------+----------+
+  {
+    uint8_t buf[] = {VERSION, reply, 0};
+    mg_send(c, buf, sizeof(buf));
+  }
+  mg_send(c, r->buf + 3, addr_len + 1 + 2);
+  mg_iobuf_delete(r, 6 + addr_len);  // Remove request from the input stream
+  c->label[0] = STATE_ESTABLISHED;   // Mark ourselves as connected
+}
+
+static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
+  if (ev == MG_EV_READ) {
+    // We use the first label byte as a state
+    if (c->label[0] == STATE_HANDSHAKE) handshake(c);
+    if (c->label[0] == STATE_REQUEST) request(c);
+    if (c->label[0] == STATE_ESTABLISHED) exchange(c);
+  } else if (ev == MG_EV_CLOSE) {
+    disband(c);
+  }
+  (void) fn_data;
+  (void) ev_data;
+}
+
+int main(void) {
+  struct mg_mgr mgr;                     // Event manager
+  mg_log_set("3");                       // Set to 0 to disable debug
+  mg_mgr_init(&mgr);                     // Initialise event manager
+  mg_listen(&mgr, s_lsn, fn, NULL);      // Create client connection
+  while (true) mg_mgr_poll(&mgr, 1000);  // Infinite event loop
+  mg_mgr_free(&mgr);                     // Free resources
+  return 0;
+}

examples/stm32-freertos-tcp/HAL/stm32f7xx_hal.c

@@ -0,0 +1,620 @@
+/**
+  ******************************************************************************
+  * @file    stm32f7xx_hal.c
+  * @author  MCD Application Team
+  * @brief   HAL module driver.
+  *          This is the common part of the HAL initialization
+  *
+  @verbatim
+  ==============================================================================
+                     ##### How to use this driver #####
+  ==============================================================================
+    [..]
+    The common HAL driver contains a set of generic and common APIs that can be
+    used by the PPP peripheral drivers and the user to start using the HAL. 
+    [..]
+    The HAL contains two APIs' categories: 
+         (+) Common HAL APIs
+         (+) Services HAL APIs
+
+  @endverbatim
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2017 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under BSD 3-Clause license,
+  * the "License"; You may not use this file except in compliance with the
+  * License. You may obtain a copy of the License at:
+  *                        opensource.org/licenses/BSD-3-Clause
+  *
+  ******************************************************************************
+  */ 
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f7xx_hal.h"
+
+/** @addtogroup STM32F7xx_HAL_Driver
+  * @{
+  */
+
+/** @defgroup HAL HAL
+  * @brief HAL module driver.
+  * @{
+  */
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/** @addtogroup HAL_Private_Constants
+  * @{
+  */
+/**
+ * @brief STM32F7xx HAL Driver version number V1.2.9
+   */
+#define __STM32F7xx_HAL_VERSION_MAIN   (0x01) /*!< [31:24] main version */
+#define __STM32F7xx_HAL_VERSION_SUB1   (0x02) /*!< [23:16] sub1 version */
+#define __STM32F7xx_HAL_VERSION_SUB2   (0x09) /*!< [15:8]  sub2 version */
+#define __STM32F7xx_HAL_VERSION_RC     (0x00) /*!< [7:0]  release candidate */ 
+#define __STM32F7xx_HAL_VERSION         ((__STM32F7xx_HAL_VERSION_MAIN << 24)\
+                                        |(__STM32F7xx_HAL_VERSION_SUB1 << 16)\
+                                        |(__STM32F7xx_HAL_VERSION_SUB2 << 8 )\
+                                        |(__STM32F7xx_HAL_VERSION_RC))
+                                        
+#define IDCODE_DEVID_MASK    ((uint32_t)0x00000FFF)
+/**
+  * @}
+  */
+
+/* Private macro -------------------------------------------------------------*/
+/* Exported variables ---------------------------------------------------------*/
+/** @addtogroup HAL_Exported_Variables
+  * @{
+  */
+__IO uint32_t uwTick;
+uint32_t uwTickPrio   = (1UL << __NVIC_PRIO_BITS); /* Invalid PRIO */
+HAL_TickFreqTypeDef uwTickFreq = HAL_TICK_FREQ_DEFAULT;  /* 1KHz */
+/**
+  * @}
+  */
+
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+
+/** @defgroup HAL_Exported_Functions HAL Exported Functions
+  * @{
+  */
+
+/** @defgroup HAL_Exported_Functions_Group1 Initialization and de-initialization Functions 
+ *  @brief    Initialization and de-initialization functions
+ *
+@verbatim    
+ ===============================================================================
+              ##### Initialization and Configuration functions #####
+ ===============================================================================
+    [..]  This section provides functions allowing to:
+      (+) Initializes the Flash interface the NVIC allocation and initial clock 
+          configuration. It initializes the systick also when timeout is needed 
+          and the backup domain when enabled.
+      (+) De-Initializes common part of the HAL.
+      (+) Configure the time base source to have 1ms time base with a dedicated 
+          Tick interrupt priority. 
+        (++) SysTick timer is used by default as source of time base, but user
+             can eventually implement his proper time base source (a general purpose 
+             timer for example or other time source), keeping in mind that Time base 
+             duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and 
+             handled in milliseconds basis.
+        (++) Time base configuration function (HAL_InitTick ()) is called automatically 
+             at the beginning of the program after reset by HAL_Init() or at any time 
+             when clock is configured, by HAL_RCC_ClockConfig(). 
+        (++) Source of time base is configured  to generate interrupts at regular 
+             time intervals. Care must be taken if HAL_Delay() is called from a 
+             peripheral ISR process, the Tick interrupt line must have higher priority 
+            (numerically lower) than the peripheral interrupt. Otherwise the caller 
+            ISR process will be blocked. 
+       (++) functions affecting time base configurations are declared as __weak  
+             to make  override possible  in case of other  implementations in user file.
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  This function is used to initialize the HAL Library; it must be the first 
+  *         instruction to be executed in the main program (before to call any other
+  *         HAL function), it performs the following:
+  *           Configure the Flash prefetch, and instruction cache through ART accelerator.
+  *           Configures the SysTick to generate an interrupt each 1 millisecond,
+  *           which is clocked by the HSI (at this stage, the clock is not yet
+  *           configured and thus the system is running from the internal HSI at 16 MHz).
+  *           Set NVIC Group Priority to 4.
+  *           Calls the HAL_MspInit() callback function defined in user file 
+  *           "stm32f7xx_hal_msp.c" to do the global low level hardware initialization 
+  *            
+  * @note   SysTick is used as time base for the HAL_Delay() function, the application
+  *         need to ensure that the SysTick time base is always set to 1 millisecond
+  *         to have correct HAL operation.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_Init(void)
+{
+  /* Configure Instruction cache through ART accelerator */ 
+#if (ART_ACCLERATOR_ENABLE != 0)
+   __HAL_FLASH_ART_ENABLE();
+#endif /* ART_ACCLERATOR_ENABLE */
+
+  /* Configure Flash prefetch */
+#if (PREFETCH_ENABLE != 0U)
+  __HAL_FLASH_PREFETCH_BUFFER_ENABLE();
+#endif /* PREFETCH_ENABLE */
+
+  /* Set Interrupt Group Priority */
+  HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_4);
+
+  /* Use systick as time base source and configure 1ms tick (default clock after Reset is HSI) */
+  HAL_InitTick(TICK_INT_PRIORITY);
+  
+  /* Init the low level hardware */
+  HAL_MspInit();
+  
+  /* Return function status */
+  return HAL_OK;
+}
+
+/**
+  * @brief  This function de-Initializes common part of the HAL and stops the systick.
+  *         This function is optional.   
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_DeInit(void)
+{
+  /* Reset of all peripherals */
+  __HAL_RCC_APB1_FORCE_RESET();
+  __HAL_RCC_APB1_RELEASE_RESET();
+
+  __HAL_RCC_APB2_FORCE_RESET();
+  __HAL_RCC_APB2_RELEASE_RESET();
+
+  __HAL_RCC_AHB1_FORCE_RESET();
+  __HAL_RCC_AHB1_RELEASE_RESET();
+
+  __HAL_RCC_AHB2_FORCE_RESET();
+  __HAL_RCC_AHB2_RELEASE_RESET();
+
+  __HAL_RCC_AHB3_FORCE_RESET();
+  __HAL_RCC_AHB3_RELEASE_RESET();
+
+  /* De-Init the low level hardware */
+  HAL_MspDeInit();
+    
+  /* Return function status */
+  return HAL_OK;
+}
+
+/**
+  * @brief  Initialize the MSP.
+  * @retval None
+  */
+__weak void HAL_MspInit(void)
+{
+  /* NOTE : This function should not be modified, when the callback is needed,
+            the HAL_MspInit could be implemented in the user file
+   */
+}
+
+/**
+  * @brief  DeInitializes the MSP.
+  * @retval None
+  */
+__weak void HAL_MspDeInit(void)
+{
+  /* NOTE : This function should not be modified, when the callback is needed,
+            the HAL_MspDeInit could be implemented in the user file
+   */ 
+}
+
+/**
+  * @brief This function configures the source of the time base.
+  *        The time source is configured  to have 1ms time base with a dedicated 
+  *        Tick interrupt priority.
+  * @note This function is called  automatically at the beginning of program after
+  *       reset by HAL_Init() or at any time when clock is reconfigured  by HAL_RCC_ClockConfig().
+  * @note In the default implementation, SysTick timer is the source of time base. 
+  *       It is used to generate interrupts at regular time intervals. 
+  *       Care must be taken if HAL_Delay() is called from a peripheral ISR process, 
+  *       The SysTick interrupt must have higher priority (numerically lower)
+  *       than the peripheral interrupt. Otherwise the caller ISR process will be blocked.
+  *       The function is declared as __weak  to be overwritten  in case of other
+  *       implementation  in user file.
+  * @param TickPriority Tick interrupt priority.
+  * @retval HAL status
+  */
+__weak HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority)
+{
+  /* Configure the SysTick to have interrupt in 1ms time basis*/
+  if (HAL_SYSTICK_Config(SystemCoreClock / (1000U / uwTickFreq)) > 0U)
+  {
+    return HAL_ERROR;
+  }
+
+  /* Configure the SysTick IRQ priority */
+  if (TickPriority < (1UL << __NVIC_PRIO_BITS))
+  {
+    HAL_NVIC_SetPriority(SysTick_IRQn, TickPriority, 0U);
+    uwTickPrio = TickPriority;
+  }
+  else
+  {
+    return HAL_ERROR;
+  }
+
+  /* Return function status */
+  return HAL_OK;
+}
+
+/**
+  * @}
+  */
+
+/** @defgroup HAL_Exported_Functions_Group2 HAL Control functions 
+ *  @brief    HAL Control functions
+ *
+@verbatim
+ ===============================================================================
+                      ##### HAL Control functions #####
+ ===============================================================================
+    [..]  This section provides functions allowing to:
+      (+) Provide a tick value in millisecond
+      (+) Provide a blocking delay in millisecond
+      (+) Suspend the time base source interrupt
+      (+) Resume the time base source interrupt
+      (+) Get the HAL API driver version
+      (+) Get the device identifier
+      (+) Get the device revision identifier
+      (+) Enable/Disable Debug module during SLEEP mode
+      (+) Enable/Disable Debug module during STOP mode
+      (+) Enable/Disable Debug module during STANDBY mode
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief This function is called to increment  a global variable "uwTick"
+  *        used as application time base.
+  * @note In the default implementation, this variable is incremented each 1ms
+  *       in SysTick ISR.
+ * @note This function is declared as __weak to be overwritten in case of other 
+  *      implementations in user file.
+  * @retval None
+  */
+__weak void HAL_IncTick(void)
+{
+  uwTick += uwTickFreq;
+}
+
+/**
+  * @brief Provides a tick value in millisecond.
+  * @note This function is declared as __weak to be overwritten in case of other 
+  *       implementations in user file.
+  * @retval tick value
+  */
+__weak uint32_t HAL_GetTick(void)
+{
+  return uwTick;
+}
+
+/**
+  * @brief This function returns a tick priority.
+  * @retval tick priority
+  */
+uint32_t HAL_GetTickPrio(void)
+{
+  return uwTickPrio;
+}
+
+/**
+  * @brief Set new tick Freq.
+  * @retval Status
+  */
+HAL_StatusTypeDef HAL_SetTickFreq(HAL_TickFreqTypeDef Freq)
+{
+  HAL_StatusTypeDef status  = HAL_OK;
+  HAL_TickFreqTypeDef prevTickFreq;
+
+  assert_param(IS_TICKFREQ(Freq));
+
+  if (uwTickFreq != Freq)
+  {
+    /* Back up uwTickFreq frequency */
+    prevTickFreq = uwTickFreq;
+
+    /* Update uwTickFreq global variable used by HAL_InitTick() */
+    uwTickFreq = Freq;
+
+    /* Apply the new tick Freq  */
+    status = HAL_InitTick(uwTickPrio);
+
+    if (status != HAL_OK)
+    {
+      /* Restore previous tick frequency */
+      uwTickFreq = prevTickFreq;
+    }
+  }
+
+  return status;
+}
+
+/**
+  * @brief Return tick frequency.
+  * @retval tick period in Hz
+  */
+HAL_TickFreqTypeDef HAL_GetTickFreq(void)
+{
+  return uwTickFreq;
+}
+
+/**
+  * @brief This function provides minimum delay (in milliseconds) based
+  *        on variable incremented.
+  * @note In the default implementation , SysTick timer is the source of time base.
+  *       It is used to generate interrupts at regular time intervals where uwTick
+  *       is incremented.
+  * @note This function is declared as __weak to be overwritten in case of other
+  *       implementations in user file.
+  * @param Delay  specifies the delay time length, in milliseconds.
+  * @retval None
+  */
+__weak void HAL_Delay(uint32_t Delay)
+{
+  uint32_t tickstart = HAL_GetTick();
+  uint32_t wait = Delay;
+
+  /* Add a freq to guarantee minimum wait */
+  if (wait < HAL_MAX_DELAY)
+  {
+    wait += (uint32_t)(uwTickFreq);
+  }
+
+  while ((HAL_GetTick() - tickstart) < wait)
+  {
+  }
+}
+
+/**
+  * @brief Suspend Tick increment.
+  * @note In the default implementation , SysTick timer is the source of time base. It is
+  *       used to generate interrupts at regular time intervals. Once HAL_SuspendTick()
+  *       is called, the SysTick interrupt will be disabled and so Tick increment 
+  *       is suspended.
+  * @note This function is declared as __weak to be overwritten in case of other
+  *       implementations in user file.
+  * @retval None
+  */
+__weak void HAL_SuspendTick(void)
+{
+  /* Disable SysTick Interrupt */
+  SysTick->CTRL &= ~SysTick_CTRL_TICKINT_Msk;
+}
+
+/**
+  * @brief Resume Tick increment.
+  * @note In the default implementation , SysTick timer is the source of time base. It is
+  *       used to generate interrupts at regular time intervals. Once HAL_ResumeTick()
+  *       is called, the SysTick interrupt will be enabled and so Tick increment 
+  *       is resumed.
+  * @note This function is declared as __weak to be overwritten in case of other
+  *       implementations in user file.
+  * @retval None
+  */
+__weak void HAL_ResumeTick(void)
+{
+  /* Enable SysTick Interrupt */
+  SysTick->CTRL  |= SysTick_CTRL_TICKINT_Msk;
+}
+
+/**
+  * @brief  Returns the HAL revision
+  * @retval version : 0xXYZR (8bits for each decimal, R for RC)
+  */
+uint32_t HAL_GetHalVersion(void)
+{
+ return __STM32F7xx_HAL_VERSION;
+}
+
+/**
+  * @brief  Returns the device revision identifier.
+  * @retval Device revision identifier
+  */
+uint32_t HAL_GetREVID(void)
+{
+   return((DBGMCU->IDCODE) >> 16U);
+}
+
+/**
+  * @brief  Returns the device identifier.
+  * @retval Device identifier
+  */
+uint32_t HAL_GetDEVID(void)
+{
+   return((DBGMCU->IDCODE) & IDCODE_DEVID_MASK);
+}
+
+/**
+  * @brief  Returns first word of the unique device identifier (UID based on 96 bits)
+  * @retval Device identifier
+  */
+uint32_t HAL_GetUIDw0(void)
+{
+   return(READ_REG(*((uint32_t *)UID_BASE)));
+}
+
+/**
+  * @brief  Returns second word of the unique device identifier (UID based on 96 bits)
+  * @retval Device identifier
+  */
+uint32_t HAL_GetUIDw1(void)
+{
+   return(READ_REG(*((uint32_t *)(UID_BASE + 4U))));
+}
+
+/**
+  * @brief  Returns third word of the unique device identifier (UID based on 96 bits)
+  * @retval Device identifier
+  */
+uint32_t HAL_GetUIDw2(void)
+{
+   return(READ_REG(*((uint32_t *)(UID_BASE + 8U))));
+}
+
+/**
+  * @brief  Enable the Debug Module during SLEEP mode
+  * @retval None
+  */
+void HAL_DBGMCU_EnableDBGSleepMode(void)
+{
+  SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_SLEEP);
+}
+
+/**
+  * @brief  Disable the Debug Module during SLEEP mode
+  * @retval None
+  */
+void HAL_DBGMCU_DisableDBGSleepMode(void)
+{
+  CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_SLEEP);
+}
+
+/**
+  * @brief  Enable the Debug Module during STOP mode
+  * @retval None
+  */
+void HAL_DBGMCU_EnableDBGStopMode(void)
+{
+  SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STOP);
+}
+
+/**
+  * @brief  Disable the Debug Module during STOP mode
+  * @retval None
+  */
+void HAL_DBGMCU_DisableDBGStopMode(void)
+{
+  CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STOP);
+}
+
+/**
+  * @brief  Enable the Debug Module during STANDBY mode
+  * @retval None
+  */
+void HAL_DBGMCU_EnableDBGStandbyMode(void)
+{
+  SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STANDBY);
+}
+
+/**
+  * @brief  Disable the Debug Module during STANDBY mode
+  * @retval None
+  */
+void HAL_DBGMCU_DisableDBGStandbyMode(void)
+{
+  CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STANDBY);
+}
+
+/**
+  * @brief  Enables the I/O Compensation Cell.
+  * @note   The I/O compensation cell can be used only when the device supply
+  *         voltage ranges from 2.4 to 3.6 V.  
+  * @retval None
+  */
+void HAL_EnableCompensationCell(void)
+{
+  SYSCFG->CMPCR |= SYSCFG_CMPCR_CMP_PD;
+}
+
+/**
+  * @brief  Power-down the I/O Compensation Cell.
+  * @note   The I/O compensation cell can be used only when the device supply
+  *         voltage ranges from 2.4 to 3.6 V.  
+  * @retval None
+  */
+void HAL_DisableCompensationCell(void)
+{
+  SYSCFG->CMPCR &= (uint32_t)~((uint32_t)SYSCFG_CMPCR_CMP_PD);
+}
+
+/**
+  * @brief  Enables the FMC Memory Mapping Swapping.
+  *   
+  * @note   SDRAM is accessible at 0x60000000 
+  *         and NOR/RAM is accessible at 0xC0000000   
+  *
+  * @retval None
+  */
+void HAL_EnableFMCMemorySwapping(void)
+{
+  SYSCFG->MEMRMP |= SYSCFG_MEMRMP_SWP_FMC_0;
+}
+
+/**
+  * @brief  Disables the FMC Memory Mapping Swapping
+  *   
+  * @note   SDRAM is accessible at 0xC0000000 (default mapping)  
+  *         and NOR/RAM is accessible at 0x60000000 (default mapping)    
+  *           
+  * @retval None
+  */
+void HAL_DisableFMCMemorySwapping(void)
+{
+
+  SYSCFG->MEMRMP &= (uint32_t)~((uint32_t)SYSCFG_MEMRMP_SWP_FMC);
+}
+
+#if defined (STM32F765xx) || defined (STM32F767xx) || defined (STM32F769xx) || defined (STM32F777xx) || defined (STM32F779xx)
+/**
+* @brief  Enable the Internal FLASH Bank Swapping.
+*   
+* @note   This function can be used only for STM32F77xx/STM32F76xx devices. 
+*
+* @note   Flash Bank2 mapped at 0x08000000 (AXI) (aliased at 0x00200000 (TCM)) 
+*         and Flash Bank1 mapped at 0x08100000 (AXI) (aliased at 0x00300000 (TCM))   
+*
+* @retval None
+*/
+void HAL_EnableMemorySwappingBank(void)
+{
+  SET_BIT(SYSCFG->MEMRMP, SYSCFG_MEMRMP_SWP_FB);
+}
+
+/**
+* @brief  Disable the Internal FLASH Bank Swapping.
+*   
+* @note   This function can be used only for STM32F77xx/STM32F76xx devices. 
+*
+* @note   The default state : Flash Bank1 mapped at 0x08000000 (AXI) (aliased at 0x00200000 (TCM)) 
+*         and Flash Bank2 mapped at 0x08100000 (AXI)( aliased at 0x00300000 (TCM)) 
+*           
+* @retval None
+*/
+void HAL_DisableMemorySwappingBank(void)
+{
+  CLEAR_BIT(SYSCFG->MEMRMP, SYSCFG_MEMRMP_SWP_FB);
+}
+#endif /* STM32F767xx || STM32F769xx || STM32F777xx || STM32F779xx */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

examples/stm32-freertos-tcp/HAL/stm32f7xx_hal.h

@@ -0,0 +1,276 @@
+/**
+  ******************************************************************************
+  * @file    stm32f7xx_hal.h
+  * @author  MCD Application Team
+  * @brief   This file contains all the functions prototypes for the HAL 
+  *          module driver.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2017 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under BSD 3-Clause license,
+  * the "License"; You may not use this file except in compliance with the
+  * License. You may obtain a copy of the License at:
+  *                        opensource.org/licenses/BSD-3-Clause
+  *
+  ******************************************************************************
+  */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32F7xx_HAL_H
+#define __STM32F7xx_HAL_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f7xx_hal_conf.h"
+
+/** @addtogroup STM32F7xx_HAL_Driver
+  * @{
+  */
+
+/** @addtogroup HAL
+  * @{
+  */ 
+
+/* Exported types ------------------------------------------------------------*/
+/* Exported constants --------------------------------------------------------*/
+
+/** @defgroup HAL_Exported_Constants HAL Exported Constants
+  * @{
+  */
+
+/** @defgroup HAL_TICK_FREQ Tick Frequency
+  * @{
+  */
+typedef enum
+{
+  HAL_TICK_FREQ_10HZ         = 100U,
+  HAL_TICK_FREQ_100HZ        = 10U,
+  HAL_TICK_FREQ_1KHZ         = 1U,
+  HAL_TICK_FREQ_DEFAULT      = HAL_TICK_FREQ_1KHZ
+} HAL_TickFreqTypeDef;
+/**
+  * @}
+  */
+
+/** @defgroup SYSCFG_BootMode Boot Mode
+  * @{
+  */
+#define SYSCFG_MEM_BOOT_ADD0          ((uint32_t)0x00000000U)
+#define SYSCFG_MEM_BOOT_ADD1          SYSCFG_MEMRMP_MEM_BOOT
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+   
+/* Exported macro ------------------------------------------------------------*/
+/** @defgroup HAL_Exported_Macros HAL Exported Macros
+  * @{
+  */
+  
+/** @brief  Freeze/Unfreeze Peripherals in Debug mode 
+  */
+#define __HAL_DBGMCU_FREEZE_TIM2()           (DBGMCU->APB1FZ |= (DBGMCU_APB1_FZ_DBG_TIM2_STOP))
+#define __HAL_DBGMCU_FREEZE_TIM3()           (DBGMCU->APB1FZ |= (DBGMCU_APB1_FZ_DBG_TIM3_STOP))
+#define __HAL_DBGMCU_FREEZE_TIM4()           (DBGMCU->APB1FZ |= (DBGMCU_APB1_FZ_DBG_TIM4_STOP))
+#define __HAL_DBGMCU_FREEZE_TIM5()           (DBGMCU->APB1FZ |= (DBGMCU_APB1_FZ_DBG_TIM5_STOP))
+#define __HAL_DBGMCU_FREEZE_TIM6()           (DBGMCU->APB1FZ |= (DBGMCU_APB1_FZ_DBG_TIM6_STOP))
+#define __HAL_DBGMCU_FREEZE_TIM7()           (DBGMCU->APB1FZ |= (DBGMCU_APB1_FZ_DBG_TIM7_STOP))
+#define __HAL_DBGMCU_FREEZE_TIM12()          (DBGMCU->APB1FZ |= (DBGMCU_APB1_FZ_DBG_TIM12_STOP))
+#define __HAL_DBGMCU_FREEZE_TIM13()          (DBGMCU->APB1FZ |= (DBGMCU_APB1_FZ_DBG_TIM13_STOP))
+#define __HAL_DBGMCU_FREEZE_TIM14()          (DBGMCU->APB1FZ |= (DBGMCU_APB1_FZ_DBG_TIM14_STOP))
+#define __HAL_DBGMCU_FREEZE_LPTIM1()         (DBGMCU->APB1FZ |= (DBGMCU_APB1_FZ_DBG_LPTIM1_STOP))
+#define __HAL_DBGMCU_FREEZE_RTC()            (DBGMCU->APB1FZ |= (DBGMCU_APB1_FZ_DBG_RTC_STOP))
+#define __HAL_DBGMCU_FREEZE_WWDG()           (DBGMCU->APB1FZ |= (DBGMCU_APB1_FZ_DBG_WWDG_STOP))
+#define __HAL_DBGMCU_FREEZE_IWDG()           (DBGMCU->APB1FZ |= (DBGMCU_APB1_FZ_DBG_IWDG_STOP))
+#define __HAL_DBGMCU_FREEZE_I2C1_TIMEOUT()   (DBGMCU->APB1FZ |= (DBGMCU_APB1_FZ_DBG_I2C1_SMBUS_TIMEOUT))
+#define __HAL_DBGMCU_FREEZE_I2C2_TIMEOUT()   (DBGMCU->APB1FZ |= (DBGMCU_APB1_FZ_DBG_I2C2_SMBUS_TIMEOUT))
+#define __HAL_DBGMCU_FREEZE_I2C3_TIMEOUT()   (DBGMCU->APB1FZ |= (DBGMCU_APB1_FZ_DBG_I2C3_SMBUS_TIMEOUT))
+#define __HAL_DBGMCU_FREEZE_I2C4_TIMEOUT()   (DBGMCU->APB1FZ |= (DBGMCU_APB1_FZ_DBG_I2C4_SMBUS_TIMEOUT))
+#define __HAL_DBGMCU_FREEZE_CAN1()           (DBGMCU->APB1FZ |= (DBGMCU_APB1_FZ_DBG_CAN1_STOP))
+#define __HAL_DBGMCU_FREEZE_CAN2()           (DBGMCU->APB1FZ |= (DBGMCU_APB1_FZ_DBG_CAN2_STOP))
+#define __HAL_DBGMCU_FREEZE_TIM1()           (DBGMCU->APB2FZ |= (DBGMCU_APB2_FZ_DBG_TIM1_STOP))
+#define __HAL_DBGMCU_FREEZE_TIM8()           (DBGMCU->APB2FZ |= (DBGMCU_APB2_FZ_DBG_TIM8_STOP))
+#define __HAL_DBGMCU_FREEZE_TIM9()           (DBGMCU->APB2FZ |= (DBGMCU_APB2_FZ_DBG_TIM9_STOP))
+#define __HAL_DBGMCU_FREEZE_TIM10()          (DBGMCU->APB2FZ |= (DBGMCU_APB2_FZ_DBG_TIM10_STOP))
+#define __HAL_DBGMCU_FREEZE_TIM11()          (DBGMCU->APB2FZ |= (DBGMCU_APB2_FZ_DBG_TIM11_STOP))
+
+#define __HAL_DBGMCU_UNFREEZE_TIM2()           (DBGMCU->APB1FZ &= ~(DBGMCU_APB1_FZ_DBG_TIM2_STOP))
+#define __HAL_DBGMCU_UNFREEZE_TIM3()           (DBGMCU->APB1FZ &= ~(DBGMCU_APB1_FZ_DBG_TIM3_STOP))
+#define __HAL_DBGMCU_UNFREEZE_TIM4()           (DBGMCU->APB1FZ &= ~(DBGMCU_APB1_FZ_DBG_TIM4_STOP))
+#define __HAL_DBGMCU_UNFREEZE_TIM5()           (DBGMCU->APB1FZ &= ~(DBGMCU_APB1_FZ_DBG_TIM5_STOP))
+#define __HAL_DBGMCU_UNFREEZE_TIM6()           (DBGMCU->APB1FZ &= ~(DBGMCU_APB1_FZ_DBG_TIM6_STOP))
+#define __HAL_DBGMCU_UNFREEZE_TIM7()           (DBGMCU->APB1FZ &= ~(DBGMCU_APB1_FZ_DBG_TIM7_STOP))
+#define __HAL_DBGMCU_UNFREEZE_TIM12()          (DBGMCU->APB1FZ &= ~(DBGMCU_APB1_FZ_DBG_TIM12_STOP))
+#define __HAL_DBGMCU_UNFREEZE_TIM13()          (DBGMCU->APB1FZ &= ~(DBGMCU_APB1_FZ_DBG_TIM13_STOP))
+#define __HAL_DBGMCU_UNFREEZE_TIM14()          (DBGMCU->APB1FZ &= ~(DBGMCU_APB1_FZ_DBG_TIM14_STOP))
+#define __HAL_DBGMCU_UNFREEZE_LPTIM1()         (DBGMCU->APB1FZ &= ~(DBGMCU_APB1_FZ_DBG_LPTIM1_STOP))
+#define __HAL_DBGMCU_UNFREEZE_RTC()            (DBGMCU->APB1FZ &= ~(DBGMCU_APB1_FZ_DBG_RTC_STOP))
+#define __HAL_DBGMCU_UNFREEZE_WWDG()           (DBGMCU->APB1FZ &= ~(DBGMCU_APB1_FZ_DBG_WWDG_STOP))
+#define __HAL_DBGMCU_UNFREEZE_IWDG()           (DBGMCU->APB1FZ &= ~(DBGMCU_APB1_FZ_DBG_IWDG_STOP))
+#define __HAL_DBGMCU_UNFREEZE_I2C1_TIMEOUT()   (DBGMCU->APB1FZ &= ~(DBGMCU_APB1_FZ_DBG_I2C1_SMBUS_TIMEOUT))
+#define __HAL_DBGMCU_UNFREEZE_I2C2_TIMEOUT()   (DBGMCU->APB1FZ &= ~(DBGMCU_APB1_FZ_DBG_I2C2_SMBUS_TIMEOUT))
+#define __HAL_DBGMCU_UNFREEZE_I2C3_TIMEOUT()   (DBGMCU->APB1FZ &= ~(DBGMCU_APB1_FZ_DBG_I2C3_SMBUS_TIMEOUT))
+#define __HAL_DBGMCU_UNFREEZE_I2C4_TIMEOUT()   (DBGMCU->APB1FZ &= ~(DBGMCU_APB1_FZ_DBG_I2C4_SMBUS_TIMEOUT))
+#define __HAL_DBGMCU_UNFREEZE_CAN1()           (DBGMCU->APB1FZ &= ~(DBGMCU_APB1_FZ_DBG_CAN1_STOP))
+#define __HAL_DBGMCU_UNFREEZE_CAN2()           (DBGMCU->APB1FZ &= ~(DBGMCU_APB1_FZ_DBG_CAN2_STOP))
+#define __HAL_DBGMCU_UNFREEZE_TIM1()           (DBGMCU->APB2FZ &= ~(DBGMCU_APB2_FZ_DBG_TIM1_STOP))
+#define __HAL_DBGMCU_UNFREEZE_TIM8()           (DBGMCU->APB2FZ &= ~(DBGMCU_APB2_FZ_DBG_TIM8_STOP))
+#define __HAL_DBGMCU_UNFREEZE_TIM9()           (DBGMCU->APB2FZ &= ~(DBGMCU_APB2_FZ_DBG_TIM9_STOP))
+#define __HAL_DBGMCU_UNFREEZE_TIM10()          (DBGMCU->APB2FZ &= ~(DBGMCU_APB2_FZ_DBG_TIM10_STOP))
+#define __HAL_DBGMCU_UNFREEZE_TIM11()          (DBGMCU->APB2FZ &= ~(DBGMCU_APB2_FZ_DBG_TIM11_STOP))
+
+
+/** @brief  FMC (NOR/RAM) mapped at 0x60000000 and SDRAM mapped at 0xC0000000
+  */
+#define __HAL_SYSCFG_REMAPMEMORY_FMC()          (SYSCFG->MEMRMP &= ~(SYSCFG_MEMRMP_SWP_FMC))
+                                       
+
+/** @brief  FMC/SDRAM  mapped at 0x60000000 (NOR/RAM) mapped at 0xC0000000
+  */
+#define __HAL_SYSCFG_REMAPMEMORY_FMC_SDRAM() do {SYSCFG->MEMRMP &= ~(SYSCFG_MEMRMP_SWP_FMC);\
+                                          SYSCFG->MEMRMP |= (SYSCFG_MEMRMP_SWP_FMC_0);\
+                                         }while(0);
+/**
+  * @brief  Return the memory boot mapping as configured by user.
+  * @retval The boot mode as configured by user. The returned value can be one
+  *         of the following values:
+  *           @arg @ref SYSCFG_MEM_BOOT_ADD0
+  *           @arg @ref SYSCFG_MEM_BOOT_ADD1
+  */
+#define __HAL_SYSCFG_GET_BOOT_MODE()           READ_BIT(SYSCFG->MEMRMP, SYSCFG_MEMRMP_MEM_BOOT)
+
+#if defined (STM32F765xx) || defined (STM32F767xx) || defined (STM32F769xx) || defined (STM32F777xx) || defined (STM32F779xx)
+/** @brief  SYSCFG Break Cortex-M7 Lockup lock.
+  *         Enable and lock the connection of Cortex-M7 LOCKUP (Hardfault) output to TIM1/8 Break input.
+  * @note   The selected configuration is locked and can be unlocked only by system reset.
+  */
+#define __HAL_SYSCFG_BREAK_LOCKUP_LOCK()     SET_BIT(SYSCFG->CBR, SYSCFG_CBR_CLL)
+
+/** @brief  SYSCFG Break PVD lock.
+  *         Enable and lock the PVD connection to Timer1/8 Break input, as well as the PVDE and PLS[2:0] in the PWR_CR1 register.
+  * @note   The selected configuration is locked and can be unlocked only by system reset.
+  */
+#define __HAL_SYSCFG_BREAK_PVD_LOCK()        SET_BIT(SYSCFG->CBR, SYSCFG_CBR_PVDL)
+#endif /* STM32F765xx || STM32F767xx || STM32F769xx || STM32F777xx || STM32F779xx */
+
+/**
+  * @}
+  */
+  
+/** @defgroup HAL_Private_Macros HAL Private Macros
+  * @{
+  */
+#define IS_TICKFREQ(FREQ) (((FREQ) == HAL_TICK_FREQ_10HZ)  || \
+                           ((FREQ) == HAL_TICK_FREQ_100HZ) || \
+                           ((FREQ) == HAL_TICK_FREQ_1KHZ))
+/**
+  * @}
+  */
+/* Exported functions --------------------------------------------------------*/
+/** @addtogroup HAL_Exported_Functions
+  * @{
+  */
+/** @addtogroup HAL_Exported_Functions_Group1
+  * @{
+  */
+/* Initialization and Configuration functions  ******************************/
+HAL_StatusTypeDef HAL_Init(void);
+HAL_StatusTypeDef HAL_DeInit(void);
+void HAL_MspInit(void);
+void HAL_MspDeInit(void);
+HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority);
+/**
+  * @}
+  */
+ 
+ /* Exported variables ---------------------------------------------------------*/
+/** @addtogroup HAL_Exported_Variables
+  * @{
+  */
+extern __IO uint32_t uwTick;
+extern uint32_t uwTickPrio;
+extern HAL_TickFreqTypeDef uwTickFreq;
+/**
+  * @}
+  */
+ 
+/** @addtogroup HAL_Exported_Functions_Group2
+  * @{
+  */ 
+/* Peripheral Control functions  ************************************************/
+void HAL_IncTick(void);
+void HAL_Delay(uint32_t Delay);
+uint32_t HAL_GetTick(void);
+uint32_t HAL_GetTickPrio(void);
+HAL_StatusTypeDef HAL_SetTickFreq(HAL_TickFreqTypeDef Freq);
+HAL_TickFreqTypeDef HAL_GetTickFreq(void);
+void HAL_SuspendTick(void);
+void HAL_ResumeTick(void);
+uint32_t HAL_GetHalVersion(void);
+uint32_t HAL_GetREVID(void);
+uint32_t HAL_GetDEVID(void);
+uint32_t HAL_GetUIDw0(void);
+uint32_t HAL_GetUIDw1(void);
+uint32_t HAL_GetUIDw2(void);
+void HAL_DBGMCU_EnableDBGSleepMode(void);
+void HAL_DBGMCU_DisableDBGSleepMode(void);
+void HAL_DBGMCU_EnableDBGStopMode(void);
+void HAL_DBGMCU_DisableDBGStopMode(void);
+void HAL_DBGMCU_EnableDBGStandbyMode(void);
+void HAL_DBGMCU_DisableDBGStandbyMode(void);
+void HAL_EnableCompensationCell(void);
+void HAL_DisableCompensationCell(void);
+void HAL_EnableFMCMemorySwapping(void);
+void HAL_DisableFMCMemorySwapping(void);
+#if defined (STM32F765xx) || defined (STM32F767xx) || defined (STM32F769xx) || defined (STM32F777xx) || defined (STM32F779xx)
+void HAL_EnableMemorySwappingBank(void);
+void HAL_DisableMemorySwappingBank(void);
+#endif /* STM32F765xx || STM32F767xx || STM32F769xx || STM32F777xx || STM32F779xx */
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */  
+/* Private types -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/** @defgroup HAL_Private_Variables HAL Private Variables
+  * @{
+  */
+/**
+  * @}
+  */
+/* Private constants ---------------------------------------------------------*/
+/** @defgroup HAL_Private_Constants HAL Private Constants
+  * @{
+  */
+/**
+  * @}
+  */
+/* Private macros ------------------------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */ 
+  
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM32F7xx_HAL_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

examples/stm32-freertos-tcp/HAL/stm32f7xx_hal_conf.h

@@ -0,0 +1,305 @@
+#pragma once
+
+#define HAL_ETH_MODULE_ENABLED
+#define HAL_RCC_MODULE_ENABLED
+#define HAL_CORTEX_MODULE_ENABLED
+#define HAL_GPIO_MODULE_ENABLED
+
+#include "stm32f7xx.h"
+#include "stm32f7xx_hal_cortex.h"
+#include "stm32f7xx_hal_def.h"
+#include "stm32f7xx_hal_rcc.h"
+#include "stm32f7xx_hal_gpio.h"
+
+#define UID_BASE 0x1FF0F420UL
+#define __HAL_FLASH_ART_ENABLE() SET_BIT(FLASH->ACR, FLASH_ACR_ARTEN)
+#define __HAL_FLASH_PREFETCH_BUFFER_ENABLE() (FLASH->ACR |= FLASH_ACR_PRFTEN)
+
+#define assert_param(expr) ((void) 0U)
+
+#define HAL_MODULE_ENABLED
+#define HAL_ADC_MODULE_ENABLED
+#define HAL_CAN_MODULE_ENABLED
+#define HAL_CEC_MODULE_ENABLED
+#define HAL_CRC_MODULE_ENABLED
+#define HAL_CRYP_MODULE_ENABLED
+#define HAL_DAC_MODULE_ENABLED
+#define HAL_DCMI_MODULE_ENABLED
+#define HAL_DMA_MODULE_ENABLED
+#define HAL_DMA2D_MODULE_ENABLED
+#define HAL_ETH_MODULE_ENABLED
+#define HAL_FLASH_MODULE_ENABLED
+//#define HAL_NAND_MODULE_ENABLED
+#define HAL_NOR_MODULE_ENABLED
+#define HAL_SRAM_MODULE_ENABLED
+#define HAL_SDRAM_MODULE_ENABLED
+#define HAL_HASH_MODULE_ENABLED
+#define HAL_GPIO_MODULE_ENABLED
+#define HAL_I2C_MODULE_ENABLED
+//#define HAL_I2S_MODULE_ENABLED
+//#define HAL_IWDG_MODULE_ENABLED
+#define HAL_LPTIM_MODULE_ENABLED
+#define HAL_LTDC_MODULE_ENABLED
+#define HAL_PWR_MODULE_ENABLED
+#define HAL_QSPI_MODULE_ENABLED
+#define HAL_RCC_MODULE_ENABLED
+#define HAL_RNG_MODULE_ENABLED
+#define HAL_RTC_MODULE_ENABLED
+//#define HAL_SAI_MODULE_ENABLED
+#define HAL_SD_MODULE_ENABLED
+#define HAL_SPI_MODULE_ENABLED
+#define HAL_TIM_MODULE_ENABLED
+#define HAL_UART_MODULE_ENABLED
+#define HAL_USART_MODULE_ENABLED
+#define HAL_IRDA_MODULE_ENABLED
+#define HAL_SMARTCARD_MODULE_ENABLED
+//#define HAL_WWDG_MODULE_ENABLED
+#define HAL_CORTEX_MODULE_ENABLED
+//#define HAL_PCD_MODULE_ENABLED
+//#define HAL_HCD_MODULE_ENABLED
+
+/* ########################## HSE/HSI Values adaptation ##################### */
+/**
+ * @brief Adjust the value of External High Speed oscillator (HSE) used in your
+ * application. This value is used by the RCC HAL module to compute the system
+ * frequency (when HSE is used as system clock source, directly or through the
+ * PLL).
+ */
+#if !defined(HSE_VALUE)
+#define HSE_VALUE \
+  ((uint32_t) 25000000) /*!< Value of the External oscillator in Hz */
+#endif                  /* HSE_VALUE */
+
+#if !defined(HSE_STARTUP_TIMEOUT)
+#define HSE_STARTUP_TIMEOUT \
+  ((uint32_t) 5000) /*!< Time out for HSE start up, in ms */
+#endif              /* HSE_STARTUP_TIMEOUT */
+
+/**
+ * @brief Internal High Speed oscillator (HSI) value.
+ *        This value is used by the RCC HAL module to compute the system
+ * frequency (when HSI is used as system clock source, directly or through the
+ * PLL).
+ */
+#if !defined(HSI_VALUE)
+#define HSI_VALUE \
+  ((uint32_t) 16000000) /*!< Value of the Internal oscillator in Hz*/
+#endif                  /* HSI_VALUE */
+
+/**
+ * @brief Internal Low Speed oscillator (LSI) value.
+ */
+#if !defined(LSI_VALUE)
+#define LSI_VALUE ((uint32_t) 40000)
+#endif /* LSI_VALUE */ /*!< Value of the Internal Low Speed oscillator in Hz \
+                        The real value may vary depending on the variations  \
+                        in voltage and temperature.  */
+/**
+ * @brief External Low Speed oscillator (LSE) value.
+ */
+#if !defined(LSE_VALUE)
+#define LSE_VALUE \
+  ((uint32_t) 32768) /*!< Value of the External Low Speed oscillator in Hz */
+#endif               /* LSE_VALUE */
+
+/**
+ * @brief External clock source for I2S peripheral
+ *        This value is used by the I2S HAL module to compute the I2S clock
+ * source frequency, this source is inserted directly through I2S_CKIN pad.
+ */
+#if !defined(EXTERNAL_CLOCK_VALUE)
+#define EXTERNAL_CLOCK_VALUE \
+  ((uint32_t) 12288000) /*!< Value of the Internal oscillator in Hz*/
+#endif                  /* EXTERNAL_CLOCK_VALUE */
+
+/* Tip: To avoid modifying this file each time you need to use different HSE,
+   ===  you can define the HSE value in your toolchain compiler preprocessor. */
+
+/* ########################### System Configuration ######################### */
+/**
+ * @brief This is the HAL system configuration section
+ */
+#define VDD_VALUE ((uint32_t) 3300)         /*!< Value of VDD in mv */
+#define TICK_INT_PRIORITY ((uint32_t) 0x0F) /*!< tick interrupt priority */
+#define USE_RTOS 0
+#define ART_ACCLERATOR_ENABLE 1 /* To enable instruction cache and prefetch */
+
+/* ########################## Assert Selection ############################## */
+/**
+ * @brief Uncomment the line below to expanse the "assert_param" macro in the
+ *        HAL drivers code
+ */
+/* #define USE_FULL_ASSERT    1 */
+
+/* ################## Ethernet peripheral configuration ##################### */
+
+/* Section 1 : Ethernet peripheral configuration */
+
+/* MAC ADDRESS: MAC_ADDR0:MAC_ADDR1:MAC_ADDR2:MAC_ADDR3:MAC_ADDR4:MAC_ADDR5 */
+#define MAC_ADDR0 2
+#define MAC_ADDR1 0
+#define MAC_ADDR2 0
+#define MAC_ADDR3 0
+#define MAC_ADDR4 0
+#define MAC_ADDR5 0
+
+/* Definition of the Ethernet driver buffers size and count */
+#define ETH_RX_BUF_SIZE \
+  ETH_MAX_PACKET_SIZE /* buffer size for receive               */
+#define ETH_TX_BUF_SIZE \
+  ETH_MAX_PACKET_SIZE              /* buffer size for transmit              */
+#define ETH_RXBUFNB ((uint32_t) 8) /* 8 Rx buffers of size ETH_RX_BUF_SIZE  */
+#define ETH_TXBUFNB ((uint32_t) 4) /* 4 Tx buffers of size ETH_TX_BUF_SIZE  */
+
+/* Section 2: PHY configuration section */
+
+/* DP83848 PHY Address*/
+#define DP83848_PHY_ADDRESS 0x01
+/* PHY Reset delay these values are based on a 1 ms Systick interrupt*/
+#define PHY_RESET_DELAY ((uint32_t) 0x000000FF)
+/* PHY Configuration delay */
+#define PHY_CONFIG_DELAY ((uint32_t) 0x00000FFF)
+
+#define PHY_READ_TO ((uint32_t) 0x0000FFFF)
+#define PHY_WRITE_TO ((uint32_t) 0x0000FFFF)
+
+/* Section 3: Common PHY Registers */
+
+#define PHY_BCR ((uint16_t) 0x00) /*!< Transceiver Basic Control Register   */
+#define PHY_BSR ((uint16_t) 0x01) /*!< Transceiver Basic Status Register    */
+
+#define PHY_RESET ((uint16_t) 0x8000)    /*!< PHY Reset */
+#define PHY_LOOPBACK ((uint16_t) 0x4000) /*!< Select loop-back mode */
+#define PHY_FULLDUPLEX_100M \
+  ((uint16_t) 0x2100) /*!< Set the full-duplex mode at 100 Mb/s */
+#define PHY_HALFDUPLEX_100M \
+  ((uint16_t) 0x2000) /*!< Set the half-duplex mode at 100 Mb/s */
+#define PHY_FULLDUPLEX_10M \
+  ((uint16_t) 0x0100) /*!< Set the full-duplex mode at 10 Mb/s  */
+#define PHY_HALFDUPLEX_10M \
+  ((uint16_t) 0x0000) /*!< Set the half-duplex mode at 10 Mb/s  */
+#define PHY_AUTONEGOTIATION \
+  ((uint16_t) 0x1000) /*!< Enable auto-negotiation function     */
+#define PHY_RESTART_AUTONEGOTIATION \
+  ((uint16_t) 0x0200) /*!< Restart auto-negotiation function    */
+#define PHY_POWERDOWN \
+  ((uint16_t) 0x0800) /*!< Select the power down mode           */
+#define PHY_ISOLATE \
+  ((uint16_t) 0x0400) /*!< Isolate PHY from MII                 */
+
+#define PHY_AUTONEGO_COMPLETE \
+  ((uint16_t) 0x0020) /*!< Auto-Negotiation process completed   */
+#define PHY_LINKED_STATUS \
+  ((uint16_t) 0x0004) /*!< Valid link established               */
+#define PHY_JABBER_DETECTION \
+  ((uint16_t) 0x0002) /*!< Jabber condition detected            */
+
+/* Section 4: Extended PHY Registers */
+
+#define PHY_SR \
+  ((uint16_t) 0x10) /*!< PHY status register Offset                      */
+#define PHY_MICR \
+  ((uint16_t) 0x11) /*!< MII Interrupt Control Register                  */
+#define PHY_MISR \
+  ((uint16_t) 0x12) /*!< MII Interrupt Status and Misc. Control Register */
+
+#define PHY_LINK_STATUS \
+  ((uint16_t) 0x0001) /*!< PHY Link mask                                   */
+#define PHY_SPEED_STATUS \
+  ((uint16_t) 0x0002) /*!< PHY Speed mask                                  */
+#define PHY_DUPLEX_STATUS \
+  ((uint16_t) 0x0004) /*!< PHY Duplex mask                                 */
+
+#define PHY_MICR_INT_EN \
+  ((uint16_t) 0x0002) /*!< PHY Enable interrupts                           */
+#define PHY_MICR_INT_OE \
+  ((uint16_t) 0x0001) /*!< PHY Enable output interrupt events              */
+
+#define PHY_MISR_LINK_INT_EN \
+  ((uint16_t) 0x0020) /*!< Enable Interrupt on change of link status       */
+#define PHY_LINK_INTERRUPT \
+  ((uint16_t) 0x2000) /*!< PHY link status interrupt mask                  */
+
+#if 0
+#define HAL_ETH_MODULE_ENABLED
+#define HAL_RCC_MODULE_ENABLED
+#define HAL_CORTEX_MODULE_ENABLED
+#define HAL_GPIO_MODULE_ENABLED
+
+#include "stm32f7xx.h"
+#include "stm32f7xx_hal_cortex.h"
+#include "stm32f7xx_hal_def.h"
+#include "stm32f7xx_hal_rcc.h"
+
+#define UID_BASE 0x1FF0F420UL
+#define __HAL_FLASH_ART_ENABLE() SET_BIT(FLASH->ACR, FLASH_ACR_ARTEN)
+#define __HAL_FLASH_PREFETCH_BUFFER_ENABLE() (FLASH->ACR |= FLASH_ACR_PRFTEN)
+
+#define ETH_RXBUFNB 3
+#define ETH_TXBUFNB 2
+#define ETH_RX_BUF_SIZE (ipconfigNETWORK_MTU + 36)
+#define ETH_TX_BUF_SIZE (ipconfigNETWORK_MTU + 36)
+
+#define assert_param(expr) ((void) 0U)
+
+#define LAN8742A_PHY_ADDRESS            0x00
+#define PHY_RESET_DELAY                 ((uint32_t)0x00000FFF)
+#define PHY_CONFIG_DELAY                ((uint32_t)0x00000FFF)
+#define PHY_READ_TO                     ((uint32_t)0x0000FFFF)
+#define PHY_WRITE_TO                    ((uint32_t)0x0000FFFF)
+#define PHY_BCR                         ((uint16_t)0x00)    /*!< Transceiver Basic Control Register   */
+#define PHY_BSR                         ((uint16_t)0x01)    /*!< Transceiver Basic Status Register    */
+#define PHY_RESET                       ((uint16_t)0x8000)  /*!< PHY Reset */
+#define PHY_LOOPBACK                    ((uint16_t)0x4000)  /*!< Select loop-back mode */
+#define PHY_FULLDUPLEX_100M             ((uint16_t)0x2100)  /*!< Set the full-duplex mode at 100 Mb/s */
+#define PHY_HALFDUPLEX_100M             ((uint16_t)0x2000)  /*!< Set the half-duplex mode at 100 Mb/s */
+#define PHY_FULLDUPLEX_10M              ((uint16_t)0x0100)  /*!< Set the full-duplex mode at 10 Mb/s  */
+#define PHY_HALFDUPLEX_10M              ((uint16_t)0x0000)  /*!< Set the half-duplex mode at 10 Mb/s  */
+#define PHY_AUTONEGOTIATION             ((uint16_t)0x1000)  /*!< Enable auto-negotiation function     */
+#define PHY_RESTART_AUTONEGOTIATION     ((uint16_t)0x0200)  /*!< Restart auto-negotiation function    */
+#define PHY_POWERDOWN                   ((uint16_t)0x0800)  /*!< Select the power down mode           */
+#define PHY_ISOLATE                     ((uint16_t)0x0400)  /*!< Isolate PHY from MII                 */
+#define PHY_AUTONEGO_COMPLETE           ((uint16_t)0x0020)  /*!< Auto-Negotiation process completed   */
+#define PHY_LINKED_STATUS               ((uint16_t)0x0004)  /*!< Valid link established               */
+#define PHY_JABBER_DETECTION            ((uint16_t)0x0002)  /*!< Jabber condition detected            */
+#define PHY_SR                          ((uint16_t)0x1F)    /*!< PHY special control/ status register Offset     */
+#define PHY_SPEED_STATUS                ((uint16_t)0x0004)  /*!< PHY Speed mask                                  */
+#define PHY_DUPLEX_STATUS               ((uint16_t)0x0010)  /*!< PHY Duplex mask                                 */
+#define PHY_ISFR                        ((uint16_t)0x1D)    /*!< PHY Interrupt Source Flag register Offset       */
+#define PHY_ISFR_INT4                   ((uint16_t)0x0010)  /*!< PHY Link down inturrupt                         */
+
+#if !defined(HSE_VALUE)
+#define HSE_VALUE \
+  ((uint32_t) 8000000U) /*!< Value of the External oscillator in Hz */
+#endif                  /* HSE_VALUE */
+#if !defined(HSE_STARTUP_TIMEOUT)
+#define HSE_STARTUP_TIMEOUT \
+  ((uint32_t) 100U) /*!< Time out for HSE start up, in ms */
+#endif              /* HSE_STARTUP_TIMEOUT */
+#if !defined(HSI_VALUE)
+#define HSI_VALUE \
+  ((uint32_t) 16000000U) /*!< Value of the Internal oscillator in Hz*/
+#endif                   /* HSI_VALUE */
+#if !defined(LSI_VALUE)
+#define LSI_VALUE ((uint32_t) 32000U) /*!< LSI Typical Value in Hz*/
+#endif
+#if !defined(LSE_VALUE)
+#define LSE_VALUE \
+  ((uint32_t) 32768U) /*!< Value of the External Low Speed oscillator in Hz */
+#endif                /* LSE_VALUE */
+#if !defined(LSE_STARTUP_TIMEOUT)
+#define LSE_STARTUP_TIMEOUT \
+  ((uint32_t) 5000U) /*!< Time out for LSE start up, in ms */
+#endif               /* LSE_STARTUP_TIMEOUT */
+#if !defined(EXTERNAL_CLOCK_VALUE)
+#define EXTERNAL_CLOCK_VALUE \
+  ((uint32_t) 12288000U) /*!< Value of the Internal oscillator in Hz*/
+#endif                   /* EXTERNAL_CLOCK_VALUE */
+#define VDD_VALUE ((uint32_t) 3300U)         /*!< Value of VDD in mv */
+#define TICK_INT_PRIORITY ((uint32_t) 0x0FU) /*!< tick interrupt priority */
+#define USE_RTOS 0U
+#define PREFETCH_ENABLE 1U
+#define ART_ACCLERATOR_ENABLE 1U /* To enable instruction cache and prefetch \
+                                  */
+
+#endif

examples/stm32-freertos-tcp/HAL/stm32f7xx_hal_cortex.c

@@ -0,0 +1,505 @@
+/**
+  ******************************************************************************
+  * @file    stm32f7xx_hal_cortex.c
+  * @author  MCD Application Team
+  * @brief   CORTEX HAL module driver.
+  *          This file provides firmware functions to manage the following 
+  *          functionalities of the CORTEX:
+  *           + Initialization and de-initialization functions
+  *           + Peripheral Control functions 
+  *
+  @verbatim  
+  ==============================================================================
+                        ##### How to use this driver #####
+  ==============================================================================
+
+    [..]  
+    *** How to configure Interrupts using CORTEX HAL driver ***
+    ===========================================================
+    [..]     
+    This section provides functions allowing to configure the NVIC interrupts (IRQ).
+    The Cortex-M4 exceptions are managed by CMSIS functions.
+   
+    (#) Configure the NVIC Priority Grouping using HAL_NVIC_SetPriorityGrouping()
+        function according to the following table.
+    (#) Configure the priority of the selected IRQ Channels using HAL_NVIC_SetPriority(). 
+    (#) Enable the selected IRQ Channels using HAL_NVIC_EnableIRQ().
+    (#) please refer to programming manual for details in how to configure priority. 
+      
+     -@- When the NVIC_PRIORITYGROUP_0 is selected, IRQ preemption is no more possible. 
+         The pending IRQ priority will be managed only by the sub priority.
+   
+     -@- IRQ priority order (sorted by highest to lowest priority):
+        (+@) Lowest preemption priority
+        (+@) Lowest sub priority
+        (+@) Lowest hardware priority (IRQ number)
+ 
+    [..]  
+    *** How to configure Systick using CORTEX HAL driver ***
+    ========================================================
+    [..]
+    Setup SysTick Timer for time base.
+           
+   (+) The HAL_SYSTICK_Config() function calls the SysTick_Config() function which
+       is a CMSIS function that:
+        (++) Configures the SysTick Reload register with value passed as function parameter.
+        (++) Configures the SysTick IRQ priority to the lowest value (0x0F).
+        (++) Resets the SysTick Counter register.
+        (++) Configures the SysTick Counter clock source to be Core Clock Source (HCLK).
+        (++) Enables the SysTick Interrupt.
+        (++) Starts the SysTick Counter.
+    
+   (+) You can change the SysTick Clock source to be HCLK_Div8 by calling the macro
+       __HAL_CORTEX_SYSTICKCLK_CONFIG(SYSTICK_CLKSOURCE_HCLK_DIV8) just after the
+       HAL_SYSTICK_Config() function call. The __HAL_CORTEX_SYSTICKCLK_CONFIG() macro is defined
+       inside the stm32f7xx_hal_cortex.h file.
+
+   (+) You can change the SysTick IRQ priority by calling the
+       HAL_NVIC_SetPriority(SysTick_IRQn,...) function just after the HAL_SYSTICK_Config() function 
+       call. The HAL_NVIC_SetPriority() call the NVIC_SetPriority() function which is a CMSIS function.
+
+   (+) To adjust the SysTick time base, use the following formula:
+                            
+       Reload Value = SysTick Counter Clock (Hz) x  Desired Time base (s)
+       (++) Reload Value is the parameter to be passed for HAL_SYSTICK_Config() function
+       (++) Reload Value should not exceed 0xFFFFFF
+   
+  @endverbatim
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2017 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under BSD 3-Clause license,
+  * the "License"; You may not use this file except in compliance with the
+  * License. You may obtain a copy of the License at:
+  *                        opensource.org/licenses/BSD-3-Clause
+  *
+  ******************************************************************************
+  */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f7xx_hal.h"
+
+/** @addtogroup STM32F7xx_HAL_Driver
+  * @{
+  */
+
+/** @defgroup CORTEX CORTEX
+  * @brief CORTEX HAL module driver
+  * @{
+  */
+
+#ifdef HAL_CORTEX_MODULE_ENABLED
+
+/* Private types -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private constants ---------------------------------------------------------*/
+/* Private macros ------------------------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+/* Exported functions --------------------------------------------------------*/
+
+/** @defgroup CORTEX_Exported_Functions CORTEX Exported Functions
+  * @{
+  */
+
+
+/** @defgroup CORTEX_Exported_Functions_Group1 Initialization and de-initialization functions
+ *  @brief    Initialization and Configuration functions 
+ *
+@verbatim    
+  ==============================================================================
+              ##### Initialization and de-initialization functions #####
+  ==============================================================================
+    [..]
+      This section provides the CORTEX HAL driver functions allowing to configure Interrupts
+      Systick functionalities 
+
+@endverbatim
+  * @{
+  */
+
+
+/**
+  * @brief  Sets the priority grouping field (preemption priority and subpriority)
+  *         using the required unlock sequence.
+  * @param  PriorityGroup The priority grouping bits length. 
+  *         This parameter can be one of the following values:
+  *         @arg NVIC_PRIORITYGROUP_0: 0 bits for preemption priority
+  *                                    4 bits for subpriority
+  *         @arg NVIC_PRIORITYGROUP_1: 1 bits for preemption priority
+  *                                    3 bits for subpriority
+  *         @arg NVIC_PRIORITYGROUP_2: 2 bits for preemption priority
+  *                                    2 bits for subpriority
+  *         @arg NVIC_PRIORITYGROUP_3: 3 bits for preemption priority
+  *                                    1 bits for subpriority
+  *         @arg NVIC_PRIORITYGROUP_4: 4 bits for preemption priority
+  *                                    0 bits for subpriority
+  * @note   When the NVIC_PriorityGroup_0 is selected, IRQ preemption is no more possible. 
+  *         The pending IRQ priority will be managed only by the subpriority. 
+  * @retval None
+  */
+void HAL_NVIC_SetPriorityGrouping(uint32_t PriorityGroup)
+{
+  /* Check the parameters */
+  assert_param(IS_NVIC_PRIORITY_GROUP(PriorityGroup));
+  
+  /* Set the PRIGROUP[10:8] bits according to the PriorityGroup parameter value */
+  NVIC_SetPriorityGrouping(PriorityGroup);
+}
+
+/**
+  * @brief  Sets the priority of an interrupt.
+  * @param  IRQn External interrupt number.
+  *         This parameter can be an enumerator of IRQn_Type enumeration
+  *         (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f7xxxx.h))
+  * @param  PreemptPriority The preemption priority for the IRQn channel.
+  *         This parameter can be a value between 0 and 15
+  *         A lower priority value indicates a higher priority 
+  * @param  SubPriority the subpriority level for the IRQ channel.
+  *         This parameter can be a value between 0 and 15
+  *         A lower priority value indicates a higher priority.          
+  * @retval None
+  */
+void HAL_NVIC_SetPriority(IRQn_Type IRQn, uint32_t PreemptPriority, uint32_t SubPriority)
+{ 
+  uint32_t prioritygroup = 0x00;
+  
+  /* Check the parameters */
+  assert_param(IS_NVIC_SUB_PRIORITY(SubPriority));
+  assert_param(IS_NVIC_PREEMPTION_PRIORITY(PreemptPriority));
+  
+  prioritygroup = NVIC_GetPriorityGrouping();
+  
+  NVIC_SetPriority(IRQn, NVIC_EncodePriority(prioritygroup, PreemptPriority, SubPriority));
+}
+
+/**
+  * @brief  Enables a device specific interrupt in the NVIC interrupt controller.
+  * @note   To configure interrupts priority correctly, the NVIC_PriorityGroupConfig()
+  *         function should be called before. 
+  * @param  IRQn External interrupt number.
+  *         This parameter can be an enumerator of IRQn_Type enumeration
+  *         (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f7xxxx.h))
+  * @retval None
+  */
+void HAL_NVIC_EnableIRQ(IRQn_Type IRQn)
+{
+  /* Check the parameters */
+  assert_param(IS_NVIC_DEVICE_IRQ(IRQn));
+  
+  /* Enable interrupt */
+  NVIC_EnableIRQ(IRQn);
+}
+
+/**
+  * @brief  Disables a device specific interrupt in the NVIC interrupt controller.
+  * @param  IRQn External interrupt number.
+  *         This parameter can be an enumerator of IRQn_Type enumeration
+  *         (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f7xxxx.h))
+  * @retval None
+  */
+void HAL_NVIC_DisableIRQ(IRQn_Type IRQn)
+{
+  /* Check the parameters */
+  assert_param(IS_NVIC_DEVICE_IRQ(IRQn));
+  
+  /* Disable interrupt */
+  NVIC_DisableIRQ(IRQn);
+}
+
+/**
+  * @brief  Initiates a system reset request to reset the MCU.
+  * @retval None
+  */
+void HAL_NVIC_SystemReset(void)
+{
+  /* System Reset */
+  NVIC_SystemReset();
+}
+
+/**
+  * @brief  Initializes the System Timer and its interrupt, and starts the System Tick Timer.
+  *         Counter is in free running mode to generate periodic interrupts.
+  * @param  TicksNumb Specifies the ticks Number of ticks between two interrupts.
+  * @retval status:  - 0  Function succeeded.
+  *                  - 1  Function failed.
+  */
+uint32_t HAL_SYSTICK_Config(uint32_t TicksNumb)
+{
+   return SysTick_Config(TicksNumb);
+}
+/**
+  * @}
+  */
+
+/** @defgroup CORTEX_Exported_Functions_Group2 Peripheral Control functions
+ *  @brief   Cortex control functions 
+ *
+@verbatim   
+  ==============================================================================
+                      ##### Peripheral Control functions #####
+  ==============================================================================  
+    [..]
+      This subsection provides a set of functions allowing to control the CORTEX
+      (NVIC, SYSTICK, MPU) functionalities. 
+ 
+      
+@endverbatim
+  * @{
+  */
+
+#if (__MPU_PRESENT == 1)
+/**
+  * @brief  Disables the MPU
+  * @retval None
+  */
+void HAL_MPU_Disable(void)
+{
+  /* Make sure outstanding transfers are done */
+  __DMB();
+
+  /* Disable fault exceptions */
+  SCB->SHCSR &= ~SCB_SHCSR_MEMFAULTENA_Msk;
+  
+  /* Disable the MPU and clear the control register*/
+  MPU->CTRL = 0;
+}
+
+/**
+  * @brief  Enables the MPU
+  * @param  MPU_Control Specifies the control mode of the MPU during hard fault, 
+  *          NMI, FAULTMASK and privileged access to the default memory 
+  *          This parameter can be one of the following values:
+  *            @arg MPU_HFNMI_PRIVDEF_NONE
+  *            @arg MPU_HARDFAULT_NMI
+  *            @arg MPU_PRIVILEGED_DEFAULT
+  *            @arg MPU_HFNMI_PRIVDEF
+  * @retval None
+  */
+void HAL_MPU_Enable(uint32_t MPU_Control)
+{
+  /* Enable the MPU */
+  MPU->CTRL = MPU_Control | MPU_CTRL_ENABLE_Msk;
+  
+  /* Enable fault exceptions */
+  SCB->SHCSR |= SCB_SHCSR_MEMFAULTENA_Msk;
+  
+  /* Ensure MPU setting take effects */
+  __DSB();
+  __ISB();
+}
+
+/**
+  * @brief  Initializes and configures the Region and the memory to be protected.
+  * @param  MPU_Init Pointer to a MPU_Region_InitTypeDef structure that contains
+  *                the initialization and configuration information.
+  * @retval None
+  */
+void HAL_MPU_ConfigRegion(MPU_Region_InitTypeDef *MPU_Init)
+{
+  /* Check the parameters */
+  assert_param(IS_MPU_REGION_NUMBER(MPU_Init->Number));
+  assert_param(IS_MPU_REGION_ENABLE(MPU_Init->Enable));
+
+  /* Set the Region number */
+  MPU->RNR = MPU_Init->Number;
+
+  if ((MPU_Init->Enable) != RESET)
+  {
+    /* Check the parameters */
+    assert_param(IS_MPU_INSTRUCTION_ACCESS(MPU_Init->DisableExec));
+    assert_param(IS_MPU_REGION_PERMISSION_ATTRIBUTE(MPU_Init->AccessPermission));
+    assert_param(IS_MPU_TEX_LEVEL(MPU_Init->TypeExtField));
+    assert_param(IS_MPU_ACCESS_SHAREABLE(MPU_Init->IsShareable));
+    assert_param(IS_MPU_ACCESS_CACHEABLE(MPU_Init->IsCacheable));
+    assert_param(IS_MPU_ACCESS_BUFFERABLE(MPU_Init->IsBufferable));
+    assert_param(IS_MPU_SUB_REGION_DISABLE(MPU_Init->SubRegionDisable));
+    assert_param(IS_MPU_REGION_SIZE(MPU_Init->Size));
+    
+    MPU->RBAR = MPU_Init->BaseAddress;
+    MPU->RASR = ((uint32_t)MPU_Init->DisableExec             << MPU_RASR_XN_Pos)   |
+                ((uint32_t)MPU_Init->AccessPermission        << MPU_RASR_AP_Pos)   |
+                ((uint32_t)MPU_Init->TypeExtField            << MPU_RASR_TEX_Pos)  |
+                ((uint32_t)MPU_Init->IsShareable             << MPU_RASR_S_Pos)    |
+                ((uint32_t)MPU_Init->IsCacheable             << MPU_RASR_C_Pos)    |
+                ((uint32_t)MPU_Init->IsBufferable            << MPU_RASR_B_Pos)    |
+                ((uint32_t)MPU_Init->SubRegionDisable        << MPU_RASR_SRD_Pos)  |
+                ((uint32_t)MPU_Init->Size                    << MPU_RASR_SIZE_Pos) |
+                ((uint32_t)MPU_Init->Enable                  << MPU_RASR_ENABLE_Pos);
+  }
+  else
+  {
+    MPU->RBAR = 0x00;
+    MPU->RASR = 0x00;
+  }
+}
+#endif /* __MPU_PRESENT */
+
+/**
+  * @brief  Gets the priority grouping field from the NVIC Interrupt Controller.
+  * @retval Priority grouping field (SCB->AIRCR [10:8] PRIGROUP field)
+  */
+uint32_t HAL_NVIC_GetPriorityGrouping(void)
+{
+  /* Get the PRIGROUP[10:8] field value */
+  return NVIC_GetPriorityGrouping();
+}
+
+/**
+  * @brief  Gets the priority of an interrupt.
+  * @param  IRQn External interrupt number.
+  *         This parameter can be an enumerator of IRQn_Type enumeration
+  *         (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f7xxxx.h))
+  * @param   PriorityGroup the priority grouping bits length.
+  *         This parameter can be one of the following values:
+  *           @arg NVIC_PRIORITYGROUP_0: 0 bits for preemption priority
+  *                                      4 bits for subpriority
+  *           @arg NVIC_PRIORITYGROUP_1: 1 bits for preemption priority
+  *                                      3 bits for subpriority
+  *           @arg NVIC_PRIORITYGROUP_2: 2 bits for preemption priority
+  *                                      2 bits for subpriority
+  *           @arg NVIC_PRIORITYGROUP_3: 3 bits for preemption priority
+  *                                      1 bits for subpriority
+  *           @arg NVIC_PRIORITYGROUP_4: 4 bits for preemption priority
+  *                                      0 bits for subpriority
+  * @param  pPreemptPriority Pointer on the Preemptive priority value (starting from 0).
+  * @param  pSubPriority Pointer on the Subpriority value (starting from 0).
+  * @retval None
+  */
+void HAL_NVIC_GetPriority(IRQn_Type IRQn, uint32_t PriorityGroup, uint32_t *pPreemptPriority, uint32_t *pSubPriority)
+{
+  /* Check the parameters */
+  assert_param(IS_NVIC_PRIORITY_GROUP(PriorityGroup));
+ /* Get priority for Cortex-M system or device specific interrupts */
+  NVIC_DecodePriority(NVIC_GetPriority(IRQn), PriorityGroup, pPreemptPriority, pSubPriority);
+}
+
+/**
+  * @brief  Sets Pending bit of an external interrupt.
+  * @param  IRQn External interrupt number
+  *         This parameter can be an enumerator of IRQn_Type enumeration
+  *         (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f7xxxx.h))
+  * @retval None
+  */
+void HAL_NVIC_SetPendingIRQ(IRQn_Type IRQn)
+{
+  /* Check the parameters */
+  assert_param(IS_NVIC_DEVICE_IRQ(IRQn));
+  
+  /* Set interrupt pending */
+  NVIC_SetPendingIRQ(IRQn);
+}
+
+/**
+  * @brief  Gets Pending Interrupt (reads the pending register in the NVIC 
+  *         and returns the pending bit for the specified interrupt).
+  * @param  IRQn External interrupt number.
+  *          This parameter can be an enumerator of IRQn_Type enumeration
+  *         (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f7xxxx.h))
+  * @retval status: - 0  Interrupt status is not pending.
+  *                 - 1  Interrupt status is pending.
+  */
+uint32_t HAL_NVIC_GetPendingIRQ(IRQn_Type IRQn)
+{
+  /* Check the parameters */
+  assert_param(IS_NVIC_DEVICE_IRQ(IRQn));
+  
+  /* Return 1 if pending else 0 */
+  return NVIC_GetPendingIRQ(IRQn);
+}
+
+/**
+  * @brief  Clears the pending bit of an external interrupt.
+  * @param  IRQn External interrupt number.
+  *         This parameter can be an enumerator of IRQn_Type enumeration
+  *         (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f7xxxx.h))
+  * @retval None
+  */
+void HAL_NVIC_ClearPendingIRQ(IRQn_Type IRQn)
+{
+  /* Check the parameters */
+  assert_param(IS_NVIC_DEVICE_IRQ(IRQn));
+  
+  /* Clear pending interrupt */
+  NVIC_ClearPendingIRQ(IRQn);
+}
+
+/**
+  * @brief Gets active interrupt ( reads the active register in NVIC and returns the active bit).
+  * @param IRQn External interrupt number
+  *         This parameter can be an enumerator of IRQn_Type enumeration
+  *         (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f7xxxx.h))
+  * @retval status: - 0  Interrupt status is not pending.
+  *                 - 1  Interrupt status is pending.
+  */
+uint32_t HAL_NVIC_GetActive(IRQn_Type IRQn)
+{
+  /* Check the parameters */
+  assert_param(IS_NVIC_DEVICE_IRQ(IRQn));
+  
+  /* Return 1 if active else 0 */
+  return NVIC_GetActive(IRQn);
+}
+
+/**
+  * @brief  Configures the SysTick clock source.
+  * @param  CLKSource specifies the SysTick clock source.
+  *          This parameter can be one of the following values:
+  *             @arg SYSTICK_CLKSOURCE_HCLK_DIV8: AHB clock divided by 8 selected as SysTick clock source.
+  *             @arg SYSTICK_CLKSOURCE_HCLK: AHB clock selected as SysTick clock source.
+  * @retval None
+  */
+void HAL_SYSTICK_CLKSourceConfig(uint32_t CLKSource)
+{
+  /* Check the parameters */
+  assert_param(IS_SYSTICK_CLK_SOURCE(CLKSource));
+  if (CLKSource == SYSTICK_CLKSOURCE_HCLK)
+  {
+    SysTick->CTRL |= SYSTICK_CLKSOURCE_HCLK;
+  }
+  else
+  {
+    SysTick->CTRL &= ~SYSTICK_CLKSOURCE_HCLK;
+  }
+}
+
+/**
+  * @brief  This function handles SYSTICK interrupt request.
+  * @retval None
+  */
+void HAL_SYSTICK_IRQHandler(void)
+{
+  HAL_SYSTICK_Callback();
+}
+
+/**
+  * @brief  SYSTICK callback.
+  * @retval None
+  */
+__weak void HAL_SYSTICK_Callback(void)
+{
+  /* NOTE : This function Should not be modified, when the callback is needed,
+            the HAL_SYSTICK_Callback could be implemented in the user file
+   */
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+#endif /* HAL_CORTEX_MODULE_ENABLED */
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

examples/stm32-freertos-tcp/HAL/stm32f7xx_hal_cortex.h

@@ -0,0 +1,406 @@
+/**
+  ******************************************************************************
+  * @file    stm32f7xx_hal_cortex.h
+  * @author  MCD Application Team
+  * @brief   Header file of CORTEX HAL module.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2017 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under BSD 3-Clause license,
+  * the "License"; You may not use this file except in compliance with the
+  * License. You may obtain a copy of the License at:
+  *                        opensource.org/licenses/BSD-3-Clause
+  *
+  ******************************************************************************
+  */ 
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32F7xx_HAL_CORTEX_H
+#define __STM32F7xx_HAL_CORTEX_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f7xx_hal_def.h"
+
+/** @addtogroup STM32F7xx_HAL_Driver
+  * @{
+  */
+
+/** @addtogroup CORTEX
+  * @{
+  */ 
+/* Exported types ------------------------------------------------------------*/
+/** @defgroup CORTEX_Exported_Types Cortex Exported Types
+  * @{
+  */
+
+#if (__MPU_PRESENT == 1)
+/** @defgroup CORTEX_MPU_Region_Initialization_Structure_definition MPU Region Initialization Structure Definition
+  * @brief  MPU Region initialization structure 
+  * @{
+  */
+typedef struct
+{
+  uint8_t                Enable;                /*!< Specifies the status of the region. 
+                                                     This parameter can be a value of @ref CORTEX_MPU_Region_Enable                 */
+  uint8_t                Number;                /*!< Specifies the number of the region to protect. 
+                                                     This parameter can be a value of @ref CORTEX_MPU_Region_Number                 */
+  uint32_t               BaseAddress;           /*!< Specifies the base address of the region to protect.                           */
+  uint8_t                Size;                  /*!< Specifies the size of the region to protect. 
+                                                     This parameter can be a value of @ref CORTEX_MPU_Region_Size                   */
+  uint8_t                SubRegionDisable;      /*!< Specifies the number of the subregion protection to disable. 
+                                                     This parameter must be a number between Min_Data = 0x00 and Max_Data = 0xFF    */         
+  uint8_t                TypeExtField;          /*!< Specifies the TEX field level.
+                                                     This parameter can be a value of @ref CORTEX_MPU_TEX_Levels                    */                 
+  uint8_t                AccessPermission;      /*!< Specifies the region access permission type. 
+                                                     This parameter can be a value of @ref CORTEX_MPU_Region_Permission_Attributes  */
+  uint8_t                DisableExec;           /*!< Specifies the instruction access status. 
+                                                     This parameter can be a value of @ref CORTEX_MPU_Instruction_Access            */
+  uint8_t                IsShareable;           /*!< Specifies the shareability status of the protected region. 
+                                                     This parameter can be a value of @ref CORTEX_MPU_Access_Shareable              */
+  uint8_t                IsCacheable;           /*!< Specifies the cacheable status of the region protected. 
+                                                     This parameter can be a value of @ref CORTEX_MPU_Access_Cacheable              */
+  uint8_t                IsBufferable;          /*!< Specifies the bufferable status of the protected region. 
+                                                     This parameter can be a value of @ref CORTEX_MPU_Access_Bufferable             */
+}MPU_Region_InitTypeDef;
+/**
+  * @}
+  */
+#endif /* __MPU_PRESENT */
+
+/**
+  * @}
+  */
+
+/* Exported constants --------------------------------------------------------*/
+
+/** @defgroup CORTEX_Exported_Constants CORTEX Exported Constants
+  * @{
+  */
+
+/** @defgroup CORTEX_Preemption_Priority_Group CORTEX Preemption Priority Group
+  * @{
+  */
+#define NVIC_PRIORITYGROUP_0         ((uint32_t)0x00000007U) /*!< 0 bits for pre-emption priority
+                                                                 4 bits for subpriority */
+#define NVIC_PRIORITYGROUP_1         ((uint32_t)0x00000006U) /*!< 1 bits for pre-emption priority
+                                                                 3 bits for subpriority */
+#define NVIC_PRIORITYGROUP_2         ((uint32_t)0x00000005U) /*!< 2 bits for pre-emption priority
+                                                                 2 bits for subpriority */
+#define NVIC_PRIORITYGROUP_3         ((uint32_t)0x00000004U) /*!< 3 bits for pre-emption priority
+                                                                 1 bits for subpriority */
+#define NVIC_PRIORITYGROUP_4         ((uint32_t)0x00000003U) /*!< 4 bits for pre-emption priority
+                                                                 0 bits for subpriority */
+/**
+  * @}
+  */
+
+/** @defgroup CORTEX_SysTick_clock_source CORTEX _SysTick clock source 
+  * @{
+  */
+#define SYSTICK_CLKSOURCE_HCLK_DIV8    ((uint32_t)0x00000000U)
+#define SYSTICK_CLKSOURCE_HCLK         ((uint32_t)0x00000004U)
+
+/**
+  * @}
+  */
+
+#if (__MPU_PRESENT == 1)
+/** @defgroup CORTEX_MPU_HFNMI_PRIVDEF_Control MPU HFNMI and PRIVILEGED Access control
+  * @{
+  */
+#define  MPU_HFNMI_PRIVDEF_NONE      ((uint32_t)0x00000000U)  
+#define  MPU_HARDFAULT_NMI           ((uint32_t)0x00000002U)
+#define  MPU_PRIVILEGED_DEFAULT      ((uint32_t)0x00000004U)
+#define  MPU_HFNMI_PRIVDEF           ((uint32_t)0x00000006U)
+/**
+  * @}
+  */
+
+/** @defgroup CORTEX_MPU_Region_Enable CORTEX MPU Region Enable
+  * @{
+  */
+#define  MPU_REGION_ENABLE     ((uint8_t)0x01U)
+#define  MPU_REGION_DISABLE    ((uint8_t)0x00U)
+/**
+  * @}
+  */
+
+/** @defgroup CORTEX_MPU_Instruction_Access CORTEX MPU Instruction Access
+  * @{
+  */
+#define  MPU_INSTRUCTION_ACCESS_ENABLE      ((uint8_t)0x00U)
+#define  MPU_INSTRUCTION_ACCESS_DISABLE     ((uint8_t)0x01U)
+/**
+  * @}
+  */
+
+/** @defgroup CORTEX_MPU_Access_Shareable CORTEX MPU Instruction Access Shareable
+  * @{
+  */
+#define  MPU_ACCESS_SHAREABLE        ((uint8_t)0x01U)
+#define  MPU_ACCESS_NOT_SHAREABLE    ((uint8_t)0x00U)
+/**
+  * @}
+  */
+
+/** @defgroup CORTEX_MPU_Access_Cacheable CORTEX MPU Instruction Access Cacheable
+  * @{
+  */
+#define  MPU_ACCESS_CACHEABLE         ((uint8_t)0x01U)
+#define  MPU_ACCESS_NOT_CACHEABLE     ((uint8_t)0x00U)
+/**
+  * @}
+  */
+
+/** @defgroup CORTEX_MPU_Access_Bufferable CORTEX MPU Instruction Access Bufferable
+  * @{
+  */
+#define  MPU_ACCESS_BUFFERABLE         ((uint8_t)0x01U)
+#define  MPU_ACCESS_NOT_BUFFERABLE     ((uint8_t)0x00U)
+/**
+  * @}
+  */
+
+/** @defgroup CORTEX_MPU_TEX_Levels MPU TEX Levels
+  * @{
+  */
+#define  MPU_TEX_LEVEL0    ((uint8_t)0x00U)
+#define  MPU_TEX_LEVEL1    ((uint8_t)0x01U)
+#define  MPU_TEX_LEVEL2    ((uint8_t)0x02U)
+/**
+  * @}
+  */
+
+/** @defgroup CORTEX_MPU_Region_Size CORTEX MPU Region Size
+  * @{
+  */
+#define   MPU_REGION_SIZE_32B      ((uint8_t)0x04U)
+#define   MPU_REGION_SIZE_64B      ((uint8_t)0x05U)
+#define   MPU_REGION_SIZE_128B     ((uint8_t)0x06U) 
+#define   MPU_REGION_SIZE_256B     ((uint8_t)0x07U) 
+#define   MPU_REGION_SIZE_512B     ((uint8_t)0x08U) 
+#define   MPU_REGION_SIZE_1KB      ((uint8_t)0x09U)  
+#define   MPU_REGION_SIZE_2KB      ((uint8_t)0x0AU)
+#define   MPU_REGION_SIZE_4KB      ((uint8_t)0x0BU) 
+#define   MPU_REGION_SIZE_8KB      ((uint8_t)0x0CU) 
+#define   MPU_REGION_SIZE_16KB     ((uint8_t)0x0DU) 
+#define   MPU_REGION_SIZE_32KB     ((uint8_t)0x0EU) 
+#define   MPU_REGION_SIZE_64KB     ((uint8_t)0x0FU) 
+#define   MPU_REGION_SIZE_128KB    ((uint8_t)0x10U)
+#define   MPU_REGION_SIZE_256KB    ((uint8_t)0x11U)
+#define   MPU_REGION_SIZE_512KB    ((uint8_t)0x12U)
+#define   MPU_REGION_SIZE_1MB      ((uint8_t)0x13U) 
+#define   MPU_REGION_SIZE_2MB      ((uint8_t)0x14U) 
+#define   MPU_REGION_SIZE_4MB      ((uint8_t)0x15U) 
+#define   MPU_REGION_SIZE_8MB      ((uint8_t)0x16U) 
+#define   MPU_REGION_SIZE_16MB     ((uint8_t)0x17U)
+#define   MPU_REGION_SIZE_32MB     ((uint8_t)0x18U)
+#define   MPU_REGION_SIZE_64MB     ((uint8_t)0x19U)
+#define   MPU_REGION_SIZE_128MB    ((uint8_t)0x1AU)
+#define   MPU_REGION_SIZE_256MB    ((uint8_t)0x1BU)
+#define   MPU_REGION_SIZE_512MB    ((uint8_t)0x1CU)
+#define   MPU_REGION_SIZE_1GB      ((uint8_t)0x1DU) 
+#define   MPU_REGION_SIZE_2GB      ((uint8_t)0x1EU) 
+#define   MPU_REGION_SIZE_4GB      ((uint8_t)0x1FU)
+/**                                
+  * @}
+  */
+   
+/** @defgroup CORTEX_MPU_Region_Permission_Attributes CORTEX MPU Region Permission Attributes 
+  * @{
+  */
+#define  MPU_REGION_NO_ACCESS      ((uint8_t)0x00U)  
+#define  MPU_REGION_PRIV_RW        ((uint8_t)0x01U) 
+#define  MPU_REGION_PRIV_RW_URO    ((uint8_t)0x02U)  
+#define  MPU_REGION_FULL_ACCESS    ((uint8_t)0x03U)  
+#define  MPU_REGION_PRIV_RO        ((uint8_t)0x05U) 
+#define  MPU_REGION_PRIV_RO_URO    ((uint8_t)0x06U)
+/**
+  * @}
+  */
+
+/** @defgroup CORTEX_MPU_Region_Number CORTEX MPU Region Number
+  * @{
+  */
+#define  MPU_REGION_NUMBER0    ((uint8_t)0x00U)  
+#define  MPU_REGION_NUMBER1    ((uint8_t)0x01U) 
+#define  MPU_REGION_NUMBER2    ((uint8_t)0x02U)  
+#define  MPU_REGION_NUMBER3    ((uint8_t)0x03U)  
+#define  MPU_REGION_NUMBER4    ((uint8_t)0x04U) 
+#define  MPU_REGION_NUMBER5    ((uint8_t)0x05U)
+#define  MPU_REGION_NUMBER6    ((uint8_t)0x06U)
+#define  MPU_REGION_NUMBER7    ((uint8_t)0x07U)
+/**
+  * @}
+  */
+#endif /* __MPU_PRESENT */
+
+/**
+  * @}
+  */
+
+
+/* Exported Macros -----------------------------------------------------------*/
+
+/* Exported functions --------------------------------------------------------*/
+/** @addtogroup CORTEX_Exported_Functions
+  * @{
+  */
+  
+/** @addtogroup CORTEX_Exported_Functions_Group1
+ * @{
+ */
+/* Initialization and de-initialization functions *****************************/
+void HAL_NVIC_SetPriorityGrouping(uint32_t PriorityGroup);
+void HAL_NVIC_SetPriority(IRQn_Type IRQn, uint32_t PreemptPriority, uint32_t SubPriority);
+void HAL_NVIC_EnableIRQ(IRQn_Type IRQn);
+void HAL_NVIC_DisableIRQ(IRQn_Type IRQn);
+void HAL_NVIC_SystemReset(void);
+uint32_t HAL_SYSTICK_Config(uint32_t TicksNumb);
+/**
+  * @}
+  */
+
+/** @addtogroup CORTEX_Exported_Functions_Group2
+ * @{
+ */
+/* Peripheral Control functions ***********************************************/
+#if (__MPU_PRESENT == 1)
+void HAL_MPU_Enable(uint32_t MPU_Control);
+void HAL_MPU_Disable(void);
+void HAL_MPU_ConfigRegion(MPU_Region_InitTypeDef *MPU_Init);
+#endif /* __MPU_PRESENT */
+uint32_t HAL_NVIC_GetPriorityGrouping(void);
+void HAL_NVIC_GetPriority(IRQn_Type IRQn, uint32_t PriorityGroup, uint32_t* pPreemptPriority, uint32_t* pSubPriority);
+uint32_t HAL_NVIC_GetPendingIRQ(IRQn_Type IRQn);
+void HAL_NVIC_SetPendingIRQ(IRQn_Type IRQn);
+void HAL_NVIC_ClearPendingIRQ(IRQn_Type IRQn);
+uint32_t HAL_NVIC_GetActive(IRQn_Type IRQn);
+void HAL_SYSTICK_CLKSourceConfig(uint32_t CLKSource);
+void HAL_SYSTICK_IRQHandler(void);
+void HAL_SYSTICK_Callback(void);
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/* Private types -------------------------------------------------------------*/ 
+/* Private variables ---------------------------------------------------------*/
+/* Private constants ---------------------------------------------------------*/
+/* Private macros ------------------------------------------------------------*/
+/** @defgroup CORTEX_Private_Macros CORTEX Private Macros
+  * @{
+  */
+#define IS_NVIC_PRIORITY_GROUP(GROUP) (((GROUP) == NVIC_PRIORITYGROUP_0) || \
+                                       ((GROUP) == NVIC_PRIORITYGROUP_1) || \
+                                       ((GROUP) == NVIC_PRIORITYGROUP_2) || \
+                                       ((GROUP) == NVIC_PRIORITYGROUP_3) || \
+                                       ((GROUP) == NVIC_PRIORITYGROUP_4))
+
+#define IS_NVIC_PREEMPTION_PRIORITY(PRIORITY)  ((PRIORITY) < 0x10U)
+
+#define IS_NVIC_SUB_PRIORITY(PRIORITY)         ((PRIORITY) < 0x10U)
+
+#define IS_NVIC_DEVICE_IRQ(IRQ)                ((IRQ) >= 0x00)
+
+#define IS_SYSTICK_CLK_SOURCE(SOURCE) (((SOURCE) == SYSTICK_CLKSOURCE_HCLK) || \
+                                       ((SOURCE) == SYSTICK_CLKSOURCE_HCLK_DIV8))
+
+#if (__MPU_PRESENT == 1)
+#define IS_MPU_REGION_ENABLE(STATE) (((STATE) == MPU_REGION_ENABLE) || \
+                                     ((STATE) == MPU_REGION_DISABLE))
+
+#define IS_MPU_INSTRUCTION_ACCESS(STATE) (((STATE) == MPU_INSTRUCTION_ACCESS_ENABLE) || \
+                                          ((STATE) == MPU_INSTRUCTION_ACCESS_DISABLE))
+
+#define IS_MPU_ACCESS_SHAREABLE(STATE)   (((STATE) == MPU_ACCESS_SHAREABLE) || \
+                                          ((STATE) == MPU_ACCESS_NOT_SHAREABLE))
+
+#define IS_MPU_ACCESS_CACHEABLE(STATE)   (((STATE) == MPU_ACCESS_CACHEABLE) || \
+                                          ((STATE) == MPU_ACCESS_NOT_CACHEABLE))
+
+#define IS_MPU_ACCESS_BUFFERABLE(STATE)   (((STATE) == MPU_ACCESS_BUFFERABLE) || \
+                                          ((STATE) == MPU_ACCESS_NOT_BUFFERABLE))
+
+#define IS_MPU_TEX_LEVEL(TYPE) (((TYPE) == MPU_TEX_LEVEL0)  || \
+                                ((TYPE) == MPU_TEX_LEVEL1)  || \
+                                ((TYPE) == MPU_TEX_LEVEL2))
+
+#define IS_MPU_REGION_PERMISSION_ATTRIBUTE(TYPE) (((TYPE) == MPU_REGION_NO_ACCESS)   || \
+                                                  ((TYPE) == MPU_REGION_PRIV_RW)     || \
+                                                  ((TYPE) == MPU_REGION_PRIV_RW_URO) || \
+                                                  ((TYPE) == MPU_REGION_FULL_ACCESS) || \
+                                                  ((TYPE) == MPU_REGION_PRIV_RO)     || \
+                                                  ((TYPE) == MPU_REGION_PRIV_RO_URO))
+
+#define IS_MPU_REGION_NUMBER(NUMBER)    (((NUMBER) == MPU_REGION_NUMBER0) || \
+                                         ((NUMBER) == MPU_REGION_NUMBER1) || \
+                                         ((NUMBER) == MPU_REGION_NUMBER2) || \
+                                         ((NUMBER) == MPU_REGION_NUMBER3) || \
+                                         ((NUMBER) == MPU_REGION_NUMBER4) || \
+                                         ((NUMBER) == MPU_REGION_NUMBER5) || \
+                                         ((NUMBER) == MPU_REGION_NUMBER6) || \
+                                         ((NUMBER) == MPU_REGION_NUMBER7))
+
+#define IS_MPU_REGION_SIZE(SIZE)    (((SIZE) == MPU_REGION_SIZE_32B)   || \
+                                     ((SIZE) == MPU_REGION_SIZE_64B)   || \
+                                     ((SIZE) == MPU_REGION_SIZE_128B)  || \
+                                     ((SIZE) == MPU_REGION_SIZE_256B)  || \
+                                     ((SIZE) == MPU_REGION_SIZE_512B)  || \
+                                     ((SIZE) == MPU_REGION_SIZE_1KB)   || \
+                                     ((SIZE) == MPU_REGION_SIZE_2KB)   || \
+                                     ((SIZE) == MPU_REGION_SIZE_4KB)   || \
+                                     ((SIZE) == MPU_REGION_SIZE_8KB)   || \
+                                     ((SIZE) == MPU_REGION_SIZE_16KB)  || \
+                                     ((SIZE) == MPU_REGION_SIZE_32KB)  || \
+                                     ((SIZE) == MPU_REGION_SIZE_64KB)  || \
+                                     ((SIZE) == MPU_REGION_SIZE_128KB) || \
+                                     ((SIZE) == MPU_REGION_SIZE_256KB) || \
+                                     ((SIZE) == MPU_REGION_SIZE_512KB) || \
+                                     ((SIZE) == MPU_REGION_SIZE_1MB)   || \
+                                     ((SIZE) == MPU_REGION_SIZE_2MB)   || \
+                                     ((SIZE) == MPU_REGION_SIZE_4MB)   || \
+                                     ((SIZE) == MPU_REGION_SIZE_8MB)   || \
+                                     ((SIZE) == MPU_REGION_SIZE_16MB)  || \
+                                     ((SIZE) == MPU_REGION_SIZE_32MB)  || \
+                                     ((SIZE) == MPU_REGION_SIZE_64MB)  || \
+                                     ((SIZE) == MPU_REGION_SIZE_128MB) || \
+                                     ((SIZE) == MPU_REGION_SIZE_256MB) || \
+                                     ((SIZE) == MPU_REGION_SIZE_512MB) || \
+                                     ((SIZE) == MPU_REGION_SIZE_1GB)   || \
+                                     ((SIZE) == MPU_REGION_SIZE_2GB)   || \
+                                     ((SIZE) == MPU_REGION_SIZE_4GB))
+
+#define IS_MPU_SUB_REGION_DISABLE(SUBREGION)  ((SUBREGION) < (uint16_t)0x00FFU)
+#endif /* __MPU_PRESENT */
+
+/**                                                                          
+  * @}
+  */                                                                            
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */
+  
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM32F7xx_HAL_CORTEX_H */
+ 
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

examples/stm32-freertos-tcp/HAL/stm32f7xx_hal_def.h

@@ -0,0 +1,219 @@
+/**
+  ******************************************************************************
+  * @file    stm32f7xx_hal_def.h
+  * @author  MCD Application Team
+  * @brief   This file contains HAL common defines, enumeration, macros and 
+  *          structures definitions. 
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2017 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under BSD 3-Clause license,
+  * the "License"; You may not use this file except in compliance with the
+  * License. You may obtain a copy of the License at:
+  *                        opensource.org/licenses/BSD-3-Clause
+  *
+  ******************************************************************************
+  */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32F7xx_HAL_DEF
+#define __STM32F7xx_HAL_DEF
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f7xx.h"
+#include "Legacy/stm32_hal_legacy.h"
+#include <stddef.h>
+
+/* Exported types ------------------------------------------------------------*/
+
+/** 
+  * @brief  HAL Status structures definition  
+  */  
+typedef enum 
+{
+  HAL_OK       = 0x00U,
+  HAL_ERROR    = 0x01U,
+  HAL_BUSY     = 0x02U,
+  HAL_TIMEOUT  = 0x03U
+} HAL_StatusTypeDef;
+
+/** 
+  * @brief  HAL Lock structures definition  
+  */
+typedef enum 
+{
+  HAL_UNLOCKED = 0x00U,
+  HAL_LOCKED   = 0x01U  
+} HAL_LockTypeDef;
+
+/* Exported macro ------------------------------------------------------------*/
+
+#define UNUSED(X) (void)X      /* To avoid gcc/g++ warnings */
+
+#define HAL_MAX_DELAY      0xFFFFFFFFU
+
+#define HAL_IS_BIT_SET(REG, BIT)         (((REG) & (BIT)) == (BIT))
+#define HAL_IS_BIT_CLR(REG, BIT)         (((REG) & (BIT)) == 0U)
+
+#define __HAL_LINKDMA(__HANDLE__, __PPP_DMA_FIELD__, __DMA_HANDLE__)               \
+                        do{                                                      \
+                              (__HANDLE__)->__PPP_DMA_FIELD__ = &(__DMA_HANDLE__); \
+                              (__DMA_HANDLE__).Parent = (__HANDLE__);             \
+                          } while(0)
+
+/** @brief Reset the Handle's State field.
+  * @param __HANDLE__ specifies the Peripheral Handle.
+  * @note  This macro can be used for the following purpose: 
+  *          - When the Handle is declared as local variable; before passing it as parameter
+  *            to HAL_PPP_Init() for the first time, it is mandatory to use this macro 
+  *            to set to 0 the Handle's "State" field.
+  *            Otherwise, "State" field may have any random value and the first time the function 
+  *            HAL_PPP_Init() is called, the low level hardware initialization will be missed
+  *            (i.e. HAL_PPP_MspInit() will not be executed).
+  *          - When there is a need to reconfigure the low level hardware: instead of calling
+  *            HAL_PPP_DeInit() then HAL_PPP_Init(), user can make a call to this macro then HAL_PPP_Init().
+  *            In this later function, when the Handle's "State" field is set to 0, it will execute the function
+  *            HAL_PPP_MspInit() which will reconfigure the low level hardware.
+  * @retval None
+  */
+#define __HAL_RESET_HANDLE_STATE(__HANDLE__) ((__HANDLE__)->State = 0U)
+
+#if (USE_RTOS == 1U)
+  /* Reserved for future use */
+  #error "USE_RTOS should be 0 in the current HAL release"
+#else
+  #define __HAL_LOCK(__HANDLE__)                                           \
+                                do{                                        \
+                                    if((__HANDLE__)->Lock == HAL_LOCKED)   \
+                                    {                                      \
+                                       return HAL_BUSY;                    \
+                                    }                                      \
+                                    else                                   \
+                                    {                                      \
+                                       (__HANDLE__)->Lock = HAL_LOCKED;    \
+                                    }                                      \
+                                  }while (0U)
+
+  #define __HAL_UNLOCK(__HANDLE__)                                          \
+                                  do{                                       \
+                                      (__HANDLE__)->Lock = HAL_UNLOCKED;    \
+                                    }while (0U)
+#endif /* USE_RTOS */
+
+#if defined (__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050) /* ARM Compiler V6 */
+  #ifndef __weak
+    #define __weak  __attribute__((weak))
+  #endif
+  #ifndef __packed
+    #define __packed  __attribute__((packed))
+  #endif
+#elif defined ( __GNUC__ ) && !defined (__CC_ARM) /* GNU Compiler */
+  #ifndef __weak
+    #define __weak   __attribute__((weak))
+  #endif /* __weak */
+  #ifndef __packed
+    #define __packed __attribute__((__packed__))
+  #endif /* __packed */
+#endif /* __GNUC__ */
+
+
+/* Macro to get variable aligned on 4-bytes, for __ICCARM__ the directive "#pragma data_alignment=4" must be used instead */
+#if defined (__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050) /* ARM Compiler V6 */
+  #ifndef __ALIGN_BEGIN
+    #define __ALIGN_BEGIN
+  #endif
+  #ifndef __ALIGN_END
+    #define __ALIGN_END      __attribute__ ((aligned (4)))
+  #endif
+#elif defined ( __GNUC__ ) && !defined (__CC_ARM) /* GNU Compiler */
+  #ifndef __ALIGN_END
+    #define __ALIGN_END    __attribute__ ((aligned (4)))
+  #endif /* __ALIGN_END */
+  #ifndef __ALIGN_BEGIN  
+    #define __ALIGN_BEGIN
+  #endif /* __ALIGN_BEGIN */
+#else
+  #ifndef __ALIGN_END
+    #define __ALIGN_END
+  #endif /* __ALIGN_END */
+  #ifndef __ALIGN_BEGIN      
+    #if defined   (__CC_ARM)      /* ARM Compiler V5*/
+      #define __ALIGN_BEGIN    __align(4)
+    #elif defined (__ICCARM__)    /* IAR Compiler */
+      #define __ALIGN_BEGIN 
+    #endif /* __CC_ARM */
+  #endif /* __ALIGN_BEGIN */
+#endif /* __GNUC__ */
+
+/* Macro to get variable aligned on 32-bytes,needed for cache maintenance purpose */
+#if defined   (__GNUC__)      /* GNU Compiler */
+  #define ALIGN_32BYTES(buf)  buf __attribute__ ((aligned (32)))
+#elif defined (__ICCARM__)    /* IAR Compiler */
+  #define ALIGN_32BYTES(buf) _Pragma("data_alignment=32") buf
+#elif defined (__CC_ARM)      /* ARM Compiler */
+  #define ALIGN_32BYTES(buf) __align(32) buf
+#endif
+
+/**
+  * @brief  __RAM_FUNC definition
+  */ 
+#if defined ( __CC_ARM   ) || (defined (__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050))
+/* ARM Compiler V4/V5 and V6
+   --------------------------
+   RAM functions are defined using the toolchain options. 
+   Functions that are executed in RAM should reside in a separate source module.
+   Using the 'Options for File' dialog you can simply change the 'Code / Const' 
+   area of a module to a memory space in physical RAM.
+   Available memory areas are declared in the 'Target' tab of the 'Options for Target'
+   dialog. 
+*/
+#define __RAM_FUNC 
+
+#elif defined ( __ICCARM__ )
+/* ICCARM Compiler
+   ---------------
+   RAM functions are defined using a specific toolchain keyword "__ramfunc". 
+*/
+#define __RAM_FUNC __ramfunc
+
+#elif defined   (  __GNUC__  )
+/* GNU Compiler
+   ------------
+  RAM functions are defined using a specific toolchain attribute 
+   "__attribute__((section(".RamFunc")))".
+*/
+#define __RAM_FUNC __attribute__((section(".RamFunc")))
+
+#endif
+
+/** 
+  * @brief  __NOINLINE definition
+  */ 
+#if defined ( __CC_ARM   ) || (defined (__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)) || defined   (  __GNUC__  )
+/* ARM V4/V5 and V6 & GNU Compiler
+   -------------------------------
+*/
+#define __NOINLINE __attribute__ ( (noinline) )
+
+#elif defined ( __ICCARM__ )
+/* ICCARM Compiler
+   ---------------
+*/
+#define __NOINLINE _Pragma("optimize = no_inline")
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* ___STM32F7xx_HAL_DEF */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

examples/stm32-freertos-tcp/HAL/stm32f7xx_hal_gpio.c

@@ -0,0 +1,531 @@
+/**
+  ******************************************************************************
+  * @file    stm32f7xx_hal_gpio.c
+  * @author  MCD Application Team
+  * @brief   GPIO HAL module driver.
+  *          This file provides firmware functions to manage the following 
+  *          functionalities of the General Purpose Input/Output (GPIO) peripheral:
+  *           + Initialization and de-initialization functions
+  *           + IO operation functions
+  *
+  @verbatim
+  ==============================================================================
+                    ##### GPIO Peripheral features #####
+  ==============================================================================
+  [..] 
+  Subject to the specific hardware characteristics of each I/O port listed in the datasheet, each
+  port bit of the General Purpose IO (GPIO) Ports, can be individually configured by software
+  in several modes:
+  (+) Input mode 
+  (+) Analog mode
+  (+) Output mode
+  (+) Alternate function mode
+  (+) External interrupt/event lines
+
+  [..]  
+  During and just after reset, the alternate functions and external interrupt  
+  lines are not active and the I/O ports are configured in input floating mode.
+  
+  [..]   
+  All GPIO pins have weak internal pull-up and pull-down resistors, which can be 
+  activated or not.
+
+  [..]
+  In Output or Alternate mode, each IO can be configured on open-drain or push-pull
+  type and the IO speed can be selected depending on the VDD value.
+
+  [..]  
+  All ports have external interrupt/event capability. To use external interrupt 
+  lines, the port must be configured in input mode. All available GPIO pins are 
+  connected to the 16 external interrupt/event lines from EXTI0 to EXTI15.
+  
+  [..]
+  The external interrupt/event controller consists of up to 23 edge detectors 
+  (16 lines are connected to GPIO) for generating event/interrupt requests (each 
+  input line can be independently configured to select the type (interrupt or event) 
+  and the corresponding trigger event (rising or falling or both). Each line can 
+  also be masked independently. 
+
+                     ##### How to use this driver #####
+  ==============================================================================  
+  [..]
+    (#) Enable the GPIO AHB clock using the following function: __HAL_RCC_GPIOx_CLK_ENABLE(). 
+
+    (#) Configure the GPIO pin(s) using HAL_GPIO_Init().
+        (++) Configure the IO mode using "Mode" member from GPIO_InitTypeDef structure
+        (++) Activate Pull-up, Pull-down resistor using "Pull" member from GPIO_InitTypeDef 
+             structure.
+        (++) In case of Output or alternate function mode selection: the speed is 
+             configured through "Speed" member from GPIO_InitTypeDef structure.
+        (++) In alternate mode is selection, the alternate function connected to the IO
+             is configured through "Alternate" member from GPIO_InitTypeDef structure.
+        (++) Analog mode is required when a pin is to be used as ADC channel 
+             or DAC output.
+        (++) In case of external interrupt/event selection the "Mode" member from 
+             GPIO_InitTypeDef structure select the type (interrupt or event) and 
+             the corresponding trigger event (rising or falling or both).
+
+    (#) In case of external interrupt/event mode selection, configure NVIC IRQ priority 
+        mapped to the EXTI line using HAL_NVIC_SetPriority() and enable it using
+        HAL_NVIC_EnableIRQ().
+         
+    (#) To get the level of a pin configured in input mode use HAL_GPIO_ReadPin().
+            
+    (#) To set/reset the level of a pin configured in output mode use 
+        HAL_GPIO_WritePin()/HAL_GPIO_TogglePin().
+    
+    (#) To lock pin configuration until next reset use HAL_GPIO_LockPin().
+
+                 
+    (#) During and just after reset, the alternate functions are not 
+        active and the GPIO pins are configured in input floating mode (except JTAG
+        pins).
+  
+    (#) The LSE oscillator pins OSC32_IN and OSC32_OUT can be used as general purpose 
+        (PC14 and PC15, respectively) when the LSE oscillator is off. The LSE has 
+        priority over the GPIO function.
+  
+    (#) The HSE oscillator pins OSC_IN/OSC_OUT can be used as 
+        general purpose PH0 and PH1, respectively, when the HSE oscillator is off. 
+        The HSE has priority over the GPIO function.
+  
+  @endverbatim
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2017 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under BSD 3-Clause license,
+  * the "License"; You may not use this file except in compliance with the
+  * License. You may obtain a copy of the License at:
+  *                        opensource.org/licenses/BSD-3-Clause
+  *
+  ******************************************************************************
+  */ 
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f7xx_hal.h"
+
+/** @addtogroup STM32F7xx_HAL_Driver
+  * @{
+  */
+
+/** @defgroup GPIO GPIO
+  * @brief GPIO HAL module driver
+  * @{
+  */
+
+#ifdef HAL_GPIO_MODULE_ENABLED
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/** @addtogroup GPIO_Private_Constants GPIO Private Constants
+  * @{
+  */
+#define GPIO_MODE             ((uint32_t)0x00000003U)
+#define EXTI_MODE             ((uint32_t)0x10000000U)
+#define GPIO_MODE_IT          ((uint32_t)0x00010000U)
+#define GPIO_MODE_EVT         ((uint32_t)0x00020000U)
+#define RISING_EDGE           ((uint32_t)0x00100000U)
+#define FALLING_EDGE          ((uint32_t)0x00200000U)
+#define GPIO_OUTPUT_TYPE      ((uint32_t)0x00000010U)
+
+#define GPIO_NUMBER           ((uint32_t)16U)
+/**
+  * @}
+  */
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+/* Exported functions --------------------------------------------------------*/
+/** @defgroup GPIO_Exported_Functions GPIO Exported Functions
+  * @{
+  */
+
+/** @defgroup GPIO_Exported_Functions_Group1 Initialization and de-initialization functions
+ *  @brief    Initialization and Configuration functions
+ *
+@verbatim
+ ===============================================================================
+              ##### Initialization and de-initialization functions #####
+ ===============================================================================
+  [..]
+    This section provides functions allowing to initialize and de-initialize the GPIOs
+    to be ready for use.
+ 
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Initializes the GPIOx peripheral according to the specified parameters in the GPIO_Init.
+  * @param  GPIOx where x can be (A..K) to select the GPIO peripheral.
+  * @param  GPIO_Init pointer to a GPIO_InitTypeDef structure that contains
+  *         the configuration information for the specified GPIO peripheral.
+  * @retval None
+  */
+void HAL_GPIO_Init(GPIO_TypeDef  *GPIOx, GPIO_InitTypeDef *GPIO_Init)
+{
+  uint32_t position = 0x00;
+  uint32_t ioposition = 0x00;
+  uint32_t iocurrent = 0x00;
+  uint32_t temp = 0x00;
+
+  /* Check the parameters */
+  assert_param(IS_GPIO_ALL_INSTANCE(GPIOx));
+  assert_param(IS_GPIO_PIN(GPIO_Init->Pin));
+  assert_param(IS_GPIO_MODE(GPIO_Init->Mode));
+  assert_param(IS_GPIO_PULL(GPIO_Init->Pull));
+
+  /* Configure the port pins */
+  for(position = 0; position < GPIO_NUMBER; position++)
+  {
+    /* Get the IO position */
+    ioposition = ((uint32_t)0x01) << position;
+    /* Get the current IO position */
+    iocurrent = (uint32_t)(GPIO_Init->Pin) & ioposition;
+
+    if(iocurrent == ioposition)
+    {
+      /*--------------------- GPIO Mode Configuration ------------------------*/
+      /* In case of Output or Alternate function mode selection */
+      if((GPIO_Init->Mode == GPIO_MODE_OUTPUT_PP) || (GPIO_Init->Mode == GPIO_MODE_AF_PP) ||
+         (GPIO_Init->Mode == GPIO_MODE_OUTPUT_OD) || (GPIO_Init->Mode == GPIO_MODE_AF_OD))
+      {
+        /* Check the Speed parameter */
+        assert_param(IS_GPIO_SPEED(GPIO_Init->Speed));
+        /* Configure the IO Speed */
+        temp = GPIOx->OSPEEDR; 
+        temp &= ~(GPIO_OSPEEDER_OSPEEDR0 << (position * 2));
+        temp |= (GPIO_Init->Speed << (position * 2));
+        GPIOx->OSPEEDR = temp;
+
+        /* Configure the IO Output Type */
+        temp = GPIOx->OTYPER;
+        temp &= ~(GPIO_OTYPER_OT_0 << position) ;
+        temp |= (((GPIO_Init->Mode & GPIO_OUTPUT_TYPE) >> 4) << position);
+        GPIOx->OTYPER = temp;
+      }
+
+      /* Activate the Pull-up or Pull down resistor for the current IO */
+      temp = GPIOx->PUPDR;
+      temp &= ~(GPIO_PUPDR_PUPDR0 << (position * 2));
+      temp |= ((GPIO_Init->Pull) << (position * 2));
+      GPIOx->PUPDR = temp;
+
+      /* In case of Alternate function mode selection */
+      if((GPIO_Init->Mode == GPIO_MODE_AF_PP) || (GPIO_Init->Mode == GPIO_MODE_AF_OD))
+      {
+        /* Check the Alternate function parameter */
+        assert_param(IS_GPIO_AF(GPIO_Init->Alternate));
+
+        /* Configure Alternate function mapped with the current IO */
+        temp = GPIOx->AFR[position >> 3];
+        temp &= ~((uint32_t)0xF << ((uint32_t)(position & (uint32_t)0x07) * 4)) ;
+        temp |= ((uint32_t)(GPIO_Init->Alternate) << (((uint32_t)position & (uint32_t)0x07) * 4));
+        GPIOx->AFR[position >> 3] = temp;
+      }
+      
+      /* Configure IO Direction mode (Input, Output, Alternate or Analog) */
+      temp = GPIOx->MODER;
+      temp &= ~(GPIO_MODER_MODER0 << (position * 2));
+      temp |= ((GPIO_Init->Mode & GPIO_MODE) << (position * 2));
+      GPIOx->MODER = temp;
+
+      /*--------------------- EXTI Mode Configuration ------------------------*/
+      /* Configure the External Interrupt or event for the current IO */
+      if((GPIO_Init->Mode & EXTI_MODE) == EXTI_MODE)
+      {
+        /* Enable SYSCFG Clock */
+        __HAL_RCC_SYSCFG_CLK_ENABLE();
+
+        temp = SYSCFG->EXTICR[position >> 2];
+        temp &= ~(((uint32_t)0x0F) << (4 * (position & 0x03)));
+        temp |= ((uint32_t)(GPIO_GET_INDEX(GPIOx)) << (4 * (position & 0x03)));
+        SYSCFG->EXTICR[position >> 2] = temp;
+
+        /* Clear EXTI line configuration */
+        temp = EXTI->IMR;
+        temp &= ~((uint32_t)iocurrent);
+        if((GPIO_Init->Mode & GPIO_MODE_IT) == GPIO_MODE_IT)
+        {
+          temp |= iocurrent;
+        }
+        EXTI->IMR = temp;
+
+        temp = EXTI->EMR;
+        temp &= ~((uint32_t)iocurrent);
+        if((GPIO_Init->Mode & GPIO_MODE_EVT) == GPIO_MODE_EVT)
+        {
+          temp |= iocurrent;
+        }
+        EXTI->EMR = temp;
+
+        /* Clear Rising Falling edge configuration */
+        temp = EXTI->RTSR;
+        temp &= ~((uint32_t)iocurrent);
+        if((GPIO_Init->Mode & RISING_EDGE) == RISING_EDGE)
+        {
+          temp |= iocurrent;
+        }
+        EXTI->RTSR = temp;
+
+        temp = EXTI->FTSR;
+        temp &= ~((uint32_t)iocurrent);
+        if((GPIO_Init->Mode & FALLING_EDGE) == FALLING_EDGE)
+        {
+          temp |= iocurrent;
+        }
+        EXTI->FTSR = temp;
+      }
+    }
+  }
+}
+
+/**
+  * @brief  De-initializes the GPIOx peripheral registers to their default reset values.
+  * @param  GPIOx where x can be (A..K) to select the GPIO peripheral.
+  * @param  GPIO_Pin specifies the port bit to be written.
+  *          This parameter can be one of GPIO_PIN_x where x can be (0..15).
+  * @retval None
+  */
+void HAL_GPIO_DeInit(GPIO_TypeDef  *GPIOx, uint32_t GPIO_Pin)
+{
+  uint32_t position;
+  uint32_t ioposition = 0x00;
+  uint32_t iocurrent = 0x00;
+  uint32_t tmp = 0x00;
+
+  /* Check the parameters */
+  assert_param(IS_GPIO_ALL_INSTANCE(GPIOx));
+
+  /* Configure the port pins */
+  for(position = 0; position < GPIO_NUMBER; position++)
+  {
+    /* Get the IO position */
+    ioposition = ((uint32_t)0x01) << position;
+    /* Get the current IO position */
+    iocurrent = (GPIO_Pin) & ioposition;
+
+    if(iocurrent == ioposition)
+    {
+      /*------------------------- EXTI Mode Configuration --------------------*/
+      tmp = SYSCFG->EXTICR[position >> 2];
+      tmp &= (((uint32_t)0x0F) << (4 * (position & 0x03)));
+      if(tmp == ((uint32_t)(GPIO_GET_INDEX(GPIOx)) << (4 * (position & 0x03))))
+      {
+        /* Clear EXTI line configuration */
+        EXTI->IMR &= ~((uint32_t)iocurrent);
+        EXTI->EMR &= ~((uint32_t)iocurrent);
+
+        /* Clear Rising Falling edge configuration */
+        EXTI->RTSR &= ~((uint32_t)iocurrent);
+        EXTI->FTSR &= ~((uint32_t)iocurrent);
+
+        /* Configure the External Interrupt or event for the current IO */
+        tmp = ((uint32_t)0x0F) << (4 * (position & 0x03));
+        SYSCFG->EXTICR[position >> 2] &= ~tmp;
+      }
+      /*------------------------- GPIO Mode Configuration --------------------*/
+      /* Configure IO Direction in Input Floating Mode */
+      GPIOx->MODER &= ~(GPIO_MODER_MODER0 << (position * 2));
+
+      /* Configure the default Alternate Function in current IO */
+      GPIOx->AFR[position >> 3] &= ~((uint32_t)0xF << ((uint32_t)(position & (uint32_t)0x07) * 4)) ;
+
+      /* Deactivate the Pull-up and Pull-down resistor for the current IO */
+      GPIOx->PUPDR &= ~(GPIO_PUPDR_PUPDR0 << (position * 2));
+
+      /* Configure the default value IO Output Type */
+      GPIOx->OTYPER  &= ~(GPIO_OTYPER_OT_0 << position) ;
+
+      /* Configure the default value for IO Speed */
+      GPIOx->OSPEEDR &= ~(GPIO_OSPEEDER_OSPEEDR0 << (position * 2));
+    }
+  }
+}
+
+/**
+  * @}
+  */
+
+/** @defgroup GPIO_Exported_Functions_Group2 IO operation functions 
+ *  @brief   GPIO Read and Write
+ *
+@verbatim
+ ===============================================================================
+                       ##### IO operation functions #####
+ ===============================================================================
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Reads the specified input port pin.
+  * @param  GPIOx where x can be (A..K) to select the GPIO peripheral.
+  * @param  GPIO_Pin specifies the port bit to read.
+  *         This parameter can be GPIO_PIN_x where x can be (0..15).
+  * @retval The input port pin value.
+  */
+GPIO_PinState HAL_GPIO_ReadPin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
+{
+  GPIO_PinState bitstatus;
+
+  /* Check the parameters */
+  assert_param(IS_GPIO_PIN(GPIO_Pin));
+
+  if((GPIOx->IDR & GPIO_Pin) != (uint32_t)GPIO_PIN_RESET)
+  {
+    bitstatus = GPIO_PIN_SET;
+  }
+  else
+  {
+    bitstatus = GPIO_PIN_RESET;
+  }
+  return bitstatus;
+}
+
+/**
+  * @brief  Sets or clears the selected data port bit.
+  *
+  * @note   This function uses GPIOx_BSRR register to allow atomic read/modify
+  *         accesses. In this way, there is no risk of an IRQ occurring between
+  *         the read and the modify access.
+  *
+  * @param  GPIOx where x can be (A..K) to select the GPIO peripheral.
+  * @param  GPIO_Pin specifies the port bit to be written.
+  *          This parameter can be one of GPIO_PIN_x where x can be (0..15).
+  * @param  PinState specifies the value to be written to the selected bit.
+  *          This parameter can be one of the GPIO_PinState enum values:
+  *            @arg GPIO_PIN_RESET: to clear the port pin
+  *            @arg GPIO_PIN_SET: to set the port pin
+  * @retval None
+  */
+void HAL_GPIO_WritePin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, GPIO_PinState PinState)
+{
+  /* Check the parameters */
+  assert_param(IS_GPIO_PIN(GPIO_Pin));
+  assert_param(IS_GPIO_PIN_ACTION(PinState));
+
+  if(PinState != GPIO_PIN_RESET)
+  {
+    GPIOx->BSRR = GPIO_Pin;
+  }
+  else
+  {
+    GPIOx->BSRR = (uint32_t)GPIO_Pin << 16;
+  }
+}
+
+/**
+  * @brief  Toggles the specified GPIO pins.
+  * @param  GPIOx Where x can be (A..I) to select the GPIO peripheral.
+  * @param  GPIO_Pin Specifies the pins to be toggled.
+  * @retval None
+  */
+void HAL_GPIO_TogglePin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
+{
+  uint32_t odr;
+
+  /* Check the parameters */
+  assert_param(IS_GPIO_PIN(GPIO_Pin));
+
+  /* get current Output Data Register value */
+  odr = GPIOx->ODR;
+
+  /* Set selected pins that were at low level, and reset ones that were high */
+  GPIOx->BSRR = ((odr & GPIO_Pin) << GPIO_NUMBER) | (~odr & GPIO_Pin);
+}
+
+/**
+  * @brief  Locks GPIO Pins configuration registers.
+  * @note   The locked registers are GPIOx_MODER, GPIOx_OTYPER, GPIOx_OSPEEDR,
+  *         GPIOx_PUPDR, GPIOx_AFRL and GPIOx_AFRH.
+  * @note   The configuration of the locked GPIO pins can no longer be modified
+  *         until the next reset.
+  * @param  GPIOx where x can be (A..F) to select the GPIO peripheral for STM32F7 family
+  * @param  GPIO_Pin specifies the port bit to be locked.
+  *         This parameter can be any combination of GPIO_PIN_x where x can be (0..15).
+  * @retval None
+  */
+HAL_StatusTypeDef HAL_GPIO_LockPin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
+{
+  __IO uint32_t tmp = GPIO_LCKR_LCKK;
+
+  /* Check the parameters */
+  assert_param(IS_GPIO_PIN(GPIO_Pin));
+
+  /* Apply lock key write sequence */
+  tmp |= GPIO_Pin;
+  /* Set LCKx bit(s): LCKK='1' + LCK[15-0] */
+  GPIOx->LCKR = tmp;
+  /* Reset LCKx bit(s): LCKK='0' + LCK[15-0] */
+  GPIOx->LCKR = GPIO_Pin;
+  /* Set LCKx bit(s): LCKK='1' + LCK[15-0] */
+  GPIOx->LCKR = tmp;
+  /* Read LCKR register. This read is mandatory to complete key lock sequence */
+  tmp = GPIOx->LCKR;
+
+  /* Read again in order to confirm lock is active */
+  if((GPIOx->LCKR & GPIO_LCKR_LCKK) != RESET)
+  {
+    return HAL_OK;
+  }
+  else
+  {
+    return HAL_ERROR;
+  }
+}
+
+/**
+  * @brief  This function handles EXTI interrupt request.
+  * @param  GPIO_Pin Specifies the pins connected EXTI line
+  * @retval None
+  */
+void HAL_GPIO_EXTI_IRQHandler(uint16_t GPIO_Pin)
+{
+  /* EXTI line interrupt detected */
+  if(__HAL_GPIO_EXTI_GET_IT(GPIO_Pin) != RESET)
+  {
+    __HAL_GPIO_EXTI_CLEAR_IT(GPIO_Pin);
+    HAL_GPIO_EXTI_Callback(GPIO_Pin);
+  }
+}
+
+/**
+  * @brief  EXTI line detection callbacks.
+  * @param  GPIO_Pin Specifies the pins connected EXTI line
+  * @retval None
+  */
+__weak void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
+{
+  /* Prevent unused argument(s) compilation warning */
+  UNUSED(GPIO_Pin);
+  
+  /* NOTE: This function Should not be modified, when the callback is needed,
+           the HAL_GPIO_EXTI_Callback could be implemented in the user file
+   */
+}
+
+/**
+  * @}
+  */
+
+
+/**
+  * @}
+  */
+
+#endif /* HAL_GPIO_MODULE_ENABLED */
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

examples/stm32-freertos-tcp/HAL/stm32f7xx_hal_gpio.h

@@ -0,0 +1,309 @@
+/**
+  ******************************************************************************
+  * @file    stm32f7xx_hal_gpio.h
+  * @author  MCD Application Team
+  * @brief   Header file of GPIO HAL module.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2017 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under BSD 3-Clause license,
+  * the "License"; You may not use this file except in compliance with the
+  * License. You may obtain a copy of the License at:
+  *                        opensource.org/licenses/BSD-3-Clause
+  *
+  ******************************************************************************
+  */ 
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32F7xx_HAL_GPIO_H
+#define __STM32F7xx_HAL_GPIO_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f7xx_hal_def.h"
+
+/** @addtogroup STM32F7xx_HAL_Driver
+  * @{
+  */
+
+/** @addtogroup GPIO
+  * @{
+  */ 
+
+/* Exported types ------------------------------------------------------------*/
+/** @defgroup GPIO_Exported_Types GPIO Exported Types
+  * @{
+  */
+
+/** 
+  * @brief GPIO Init structure definition  
+  */ 
+typedef struct
+{
+  uint32_t Pin;       /*!< Specifies the GPIO pins to be configured.
+                           This parameter can be any value of @ref GPIO_pins_define */
+
+  uint32_t Mode;      /*!< Specifies the operating mode for the selected pins.
+                           This parameter can be a value of @ref GPIO_mode_define */
+
+  uint32_t Pull;      /*!< Specifies the Pull-up or Pull-Down activation for the selected pins.
+                           This parameter can be a value of @ref GPIO_pull_define */
+
+  uint32_t Speed;     /*!< Specifies the speed for the selected pins.
+                           This parameter can be a value of @ref GPIO_speed_define */
+
+  uint32_t Alternate;  /*!< Peripheral to be connected to the selected pins. 
+                            This parameter can be a value of @ref GPIO_Alternate_function_selection */
+}GPIO_InitTypeDef;
+
+/** 
+  * @brief  GPIO Bit SET and Bit RESET enumeration 
+  */
+typedef enum
+{
+  GPIO_PIN_RESET = 0,
+  GPIO_PIN_SET
+}GPIO_PinState;
+/**
+  * @}
+  */
+
+/* Exported constants --------------------------------------------------------*/
+
+/** @defgroup GPIO_Exported_Constants GPIO Exported Constants
+  * @{
+  */ 
+
+/** @defgroup GPIO_pins_define GPIO pins define
+  * @{
+  */
+#define GPIO_PIN_0                 ((uint16_t)0x0001U)  /* Pin 0 selected    */
+#define GPIO_PIN_1                 ((uint16_t)0x0002U)  /* Pin 1 selected    */
+#define GPIO_PIN_2                 ((uint16_t)0x0004U)  /* Pin 2 selected    */
+#define GPIO_PIN_3                 ((uint16_t)0x0008U)  /* Pin 3 selected    */
+#define GPIO_PIN_4                 ((uint16_t)0x0010U)  /* Pin 4 selected    */
+#define GPIO_PIN_5                 ((uint16_t)0x0020U)  /* Pin 5 selected    */
+#define GPIO_PIN_6                 ((uint16_t)0x0040U)  /* Pin 6 selected    */
+#define GPIO_PIN_7                 ((uint16_t)0x0080U)  /* Pin 7 selected    */
+#define GPIO_PIN_8                 ((uint16_t)0x0100U)  /* Pin 8 selected    */
+#define GPIO_PIN_9                 ((uint16_t)0x0200U)  /* Pin 9 selected    */
+#define GPIO_PIN_10                ((uint16_t)0x0400U)  /* Pin 10 selected   */
+#define GPIO_PIN_11                ((uint16_t)0x0800U)  /* Pin 11 selected   */
+#define GPIO_PIN_12                ((uint16_t)0x1000U)  /* Pin 12 selected   */
+#define GPIO_PIN_13                ((uint16_t)0x2000U)  /* Pin 13 selected   */
+#define GPIO_PIN_14                ((uint16_t)0x4000U)  /* Pin 14 selected   */
+#define GPIO_PIN_15                ((uint16_t)0x8000U)  /* Pin 15 selected   */
+#define GPIO_PIN_All               ((uint16_t)0xFFFFU)  /* All pins selected */
+
+#define GPIO_PIN_MASK              ((uint32_t)0x0000FFFFU) /* PIN mask for assert test */
+/**
+  * @}
+  */
+
+/** @defgroup GPIO_mode_define GPIO mode define
+  * @brief GPIO Configuration Mode 
+  *        Elements values convention: 0xX0yz00YZ
+  *           - X  : GPIO mode or EXTI Mode
+  *           - y  : External IT or Event trigger detection 
+  *           - z  : IO configuration on External IT or Event
+  *           - Y  : Output type (Push Pull or Open Drain)
+  *           - Z  : IO Direction mode (Input, Output, Alternate or Analog)
+  * @{
+  */ 
+#define  GPIO_MODE_INPUT                        ((uint32_t)0x00000000U)   /*!< Input Floating Mode                   */
+#define  GPIO_MODE_OUTPUT_PP                    ((uint32_t)0x00000001U)   /*!< Output Push Pull Mode                 */
+#define  GPIO_MODE_OUTPUT_OD                    ((uint32_t)0x00000011U)   /*!< Output Open Drain Mode                */
+#define  GPIO_MODE_AF_PP                        ((uint32_t)0x00000002U)   /*!< Alternate Function Push Pull Mode     */
+#define  GPIO_MODE_AF_OD                        ((uint32_t)0x00000012U)   /*!< Alternate Function Open Drain Mode    */
+
+#define  GPIO_MODE_ANALOG                       ((uint32_t)0x00000003U)   /*!< Analog Mode  */
+    
+#define  GPIO_MODE_IT_RISING                    ((uint32_t)0x10110000U)   /*!< External Interrupt Mode with Rising edge trigger detection          */
+#define  GPIO_MODE_IT_FALLING                   ((uint32_t)0x10210000U)   /*!< External Interrupt Mode with Falling edge trigger detection         */
+#define  GPIO_MODE_IT_RISING_FALLING            ((uint32_t)0x10310000U)   /*!< External Interrupt Mode with Rising/Falling edge trigger detection  */
+ 
+#define  GPIO_MODE_EVT_RISING                   ((uint32_t)0x10120000U)   /*!< External Event Mode with Rising edge trigger detection               */
+#define  GPIO_MODE_EVT_FALLING                  ((uint32_t)0x10220000U)   /*!< External Event Mode with Falling edge trigger detection              */
+#define  GPIO_MODE_EVT_RISING_FALLING           ((uint32_t)0x10320000U)   /*!< External Event Mode with Rising/Falling edge trigger detection       */
+/**
+  * @}
+  */
+
+/** @defgroup GPIO_speed_define  GPIO speed define
+  * @brief GPIO Output Maximum frequency
+  * @{
+  */  
+#define  GPIO_SPEED_FREQ_LOW         ((uint32_t)0x00000000U)  /*!< Low speed     */
+#define  GPIO_SPEED_FREQ_MEDIUM      ((uint32_t)0x00000001U)  /*!< Medium speed  */
+#define  GPIO_SPEED_FREQ_HIGH        ((uint32_t)0x00000002U)  /*!< Fast speed    */
+#define  GPIO_SPEED_FREQ_VERY_HIGH   ((uint32_t)0x00000003U)  /*!< High speed    */
+/**
+  * @}
+  */
+
+ /** @defgroup GPIO_pull_define GPIO pull define
+   * @brief GPIO Pull-Up or Pull-Down Activation
+   * @{
+   */  
+#define  GPIO_NOPULL        ((uint32_t)0x00000000U)   /*!< No Pull-up or Pull-down activation  */
+#define  GPIO_PULLUP        ((uint32_t)0x00000001U)   /*!< Pull-up activation                  */
+#define  GPIO_PULLDOWN      ((uint32_t)0x00000002U)   /*!< Pull-down activation                */
+/**
+  * @}
+  */
+  
+/**
+  * @}
+  */
+
+/* Exported macro ------------------------------------------------------------*/
+/** @defgroup GPIO_Exported_Macros GPIO Exported Macros
+  * @{
+  */
+
+/**
+  * @brief  Checks whether the specified EXTI line flag is set or not.
+  * @param  __EXTI_LINE__ specifies the EXTI line flag to check.
+  *         This parameter can be GPIO_PIN_x where x can be(0..15)
+  * @retval The new state of __EXTI_LINE__ (SET or RESET).
+  */
+#define __HAL_GPIO_EXTI_GET_FLAG(__EXTI_LINE__) (EXTI->PR & (__EXTI_LINE__))
+
+/**
+  * @brief  Clears the EXTI's line pending flags.
+  * @param  __EXTI_LINE__ specifies the EXTI lines flags to clear.
+  *         This parameter can be any combination of GPIO_PIN_x where x can be (0..15)
+  * @retval None
+  */
+#define __HAL_GPIO_EXTI_CLEAR_FLAG(__EXTI_LINE__) (EXTI->PR = (__EXTI_LINE__))
+
+/**
+  * @brief  Checks whether the specified EXTI line is asserted or not.
+  * @param  __EXTI_LINE__ specifies the EXTI line to check.
+  *          This parameter can be GPIO_PIN_x where x can be(0..15)
+  * @retval The new state of __EXTI_LINE__ (SET or RESET).
+  */
+#define __HAL_GPIO_EXTI_GET_IT(__EXTI_LINE__) (EXTI->PR & (__EXTI_LINE__))
+
+/**
+  * @brief  Clears the EXTI's line pending bits.
+  * @param  __EXTI_LINE__ specifies the EXTI lines to clear.
+  *          This parameter can be any combination of GPIO_PIN_x where x can be (0..15)
+  * @retval None
+  */
+#define __HAL_GPIO_EXTI_CLEAR_IT(__EXTI_LINE__) (EXTI->PR = (__EXTI_LINE__))
+
+/**
+  * @brief  Generates a Software interrupt on selected EXTI line.
+  * @param  __EXTI_LINE__ specifies the EXTI line to check.
+  *          This parameter can be GPIO_PIN_x where x can be(0..15)
+  * @retval None
+  */
+#define __HAL_GPIO_EXTI_GENERATE_SWIT(__EXTI_LINE__) (EXTI->SWIER |= (__EXTI_LINE__))
+/**
+  * @}
+  */
+
+/* Include GPIO HAL Extension module */
+#include "stm32f7xx_hal_gpio_ex.h"
+
+/* Exported functions --------------------------------------------------------*/
+/** @addtogroup GPIO_Exported_Functions
+  * @{
+  */
+
+/** @addtogroup GPIO_Exported_Functions_Group1
+  * @{
+  */
+/* Initialization and de-initialization functions *****************************/
+void  HAL_GPIO_Init(GPIO_TypeDef  *GPIOx, GPIO_InitTypeDef *GPIO_Init);
+void  HAL_GPIO_DeInit(GPIO_TypeDef  *GPIOx, uint32_t GPIO_Pin);
+/**
+  * @}
+  */
+
+/** @addtogroup GPIO_Exported_Functions_Group2
+  * @{
+  */
+/* IO operation functions *****************************************************/
+GPIO_PinState HAL_GPIO_ReadPin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin);
+void HAL_GPIO_WritePin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, GPIO_PinState PinState);
+void HAL_GPIO_TogglePin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin);
+HAL_StatusTypeDef HAL_GPIO_LockPin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin);
+void HAL_GPIO_EXTI_IRQHandler(uint16_t GPIO_Pin);
+void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin);
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */ 
+/* Private types -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private constants ---------------------------------------------------------*/
+/** @defgroup GPIO_Private_Constants GPIO Private Constants
+  * @{
+  */
+
+/**
+  * @}
+  */
+
+/* Private macros ------------------------------------------------------------*/
+/** @defgroup GPIO_Private_Macros GPIO Private Macros
+  * @{
+  */
+#define IS_GPIO_PIN_ACTION(ACTION) (((ACTION) == GPIO_PIN_RESET) || ((ACTION) == GPIO_PIN_SET))
+#define IS_GPIO_PIN(__PIN__)        ((((uint32_t)(__PIN__) & GPIO_PIN_MASK) != 0x00U))
+#define IS_GPIO_MODE(MODE) (((MODE) == GPIO_MODE_INPUT)              ||\
+                            ((MODE) == GPIO_MODE_OUTPUT_PP)          ||\
+                            ((MODE) == GPIO_MODE_OUTPUT_OD)          ||\
+                            ((MODE) == GPIO_MODE_AF_PP)              ||\
+                            ((MODE) == GPIO_MODE_AF_OD)              ||\
+                            ((MODE) == GPIO_MODE_IT_RISING)          ||\
+                            ((MODE) == GPIO_MODE_IT_FALLING)         ||\
+                            ((MODE) == GPIO_MODE_IT_RISING_FALLING)  ||\
+                            ((MODE) == GPIO_MODE_EVT_RISING)         ||\
+                            ((MODE) == GPIO_MODE_EVT_FALLING)        ||\
+                            ((MODE) == GPIO_MODE_EVT_RISING_FALLING) ||\
+                            ((MODE) == GPIO_MODE_ANALOG))
+#define IS_GPIO_SPEED(SPEED) (((SPEED) == GPIO_SPEED_LOW)  || ((SPEED) == GPIO_SPEED_MEDIUM) || \
+                              ((SPEED) == GPIO_SPEED_FAST) || ((SPEED) == GPIO_SPEED_HIGH))
+#define IS_GPIO_PULL(PULL) (((PULL) == GPIO_NOPULL) || ((PULL) == GPIO_PULLUP) || \
+                            ((PULL) == GPIO_PULLDOWN))
+/**
+  * @}
+  */
+
+/* Private functions ---------------------------------------------------------*/
+/** @defgroup GPIO_Private_Functions GPIO Private Functions
+  * @{
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM32F7xx_HAL_GPIO_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

examples/stm32-freertos-tcp/HAL/stm32f7xx_hal_gpio_ex.h

@@ -0,0 +1,658 @@
+/**
+  ******************************************************************************
+  * @file    stm32f7xx_hal_gpio_ex.h
+  * @author  MCD Application Team
+  * @brief   Header file of GPIO HAL Extension module.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2017 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under BSD 3-Clause license,
+  * the "License"; You may not use this file except in compliance with the
+  * License. You may obtain a copy of the License at:
+  *                        opensource.org/licenses/BSD-3-Clause
+  *
+  ******************************************************************************
+  */ 
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32F7xx_HAL_GPIO_EX_H
+#define __STM32F7xx_HAL_GPIO_EX_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f7xx_hal_def.h"
+
+/** @addtogroup STM32F7xx_HAL_Driver
+  * @{
+  */
+
+/** @defgroup GPIOEx GPIOEx
+  * @{
+  */ 
+
+/* Exported types ------------------------------------------------------------*/
+
+/* Exported constants --------------------------------------------------------*/
+/** @defgroup GPIOEx_Exported_Constants GPIO Exported Constants
+  * @{
+  */
+  
+/** @defgroup GPIO_Alternate_function_selection GPIO Alternate Function Selection
+  * @{
+  */  
+/*--------------- STM32F74xxx/STM32F75xxx/STM32F76xxx/STM32F77xxx -------------*/
+#if defined (STM32F745xx) || defined (STM32F746xx) || defined (STM32F756xx) || defined (STM32F765xx) || defined (STM32F767xx) ||\
+    defined (STM32F769xx) || defined (STM32F777xx) || defined (STM32F779xx) || defined (STM32F750xx)   
+/** 
+  * @brief   AF 0 selection  
+  */ 
+#define GPIO_AF0_RTC_50Hz      ((uint8_t)0x00U)  /* RTC_50Hz Alternate Function mapping                       */
+#define GPIO_AF0_MCO           ((uint8_t)0x00U)  /* MCO (MCO1 and MCO2) Alternate Function mapping            */
+#define GPIO_AF0_SWJ           ((uint8_t)0x00U)  /* SWJ (SWD and JTAG) Alternate Function mapping             */
+#define GPIO_AF0_TRACE         ((uint8_t)0x00U)  /* TRACE Alternate Function mapping                          */
+
+/** 
+  * @brief   AF 1 selection  
+  */ 
+#define GPIO_AF1_TIM1          ((uint8_t)0x01U)  /* TIM1 Alternate Function mapping */
+#define GPIO_AF1_TIM2          ((uint8_t)0x01U)  /* TIM2 Alternate Function mapping */
+#if defined (STM32F765xx) || defined(STM32F767xx) || defined(STM32F769xx) || defined(STM32F777xx) || defined(STM32F779xx)
+#define GPIO_AF1_UART5         ((uint8_t)0x01U)  /* UART5 Alternate Function mapping */
+#define GPIO_AF1_I2C4          ((uint8_t)0x01U)  /* I2C4 Alternate Function mapping  */   
+#endif /* STM32F767xx || STM32F769xx || STM32F777xx || STM32F779xx */
+
+/** 
+  * @brief   AF 2 selection  
+  */ 
+#define GPIO_AF2_TIM3          ((uint8_t)0x02U)  /* TIM3 Alternate Function mapping */
+#define GPIO_AF2_TIM4          ((uint8_t)0x02U)  /* TIM4 Alternate Function mapping */
+#define GPIO_AF2_TIM5          ((uint8_t)0x02U)  /* TIM5 Alternate Function mapping */
+
+/** 
+  * @brief   AF 3 selection  
+  */ 
+#define GPIO_AF3_TIM8          ((uint8_t)0x03U)  /* TIM8 Alternate Function mapping  */
+#define GPIO_AF3_TIM9          ((uint8_t)0x03U)  /* TIM9 Alternate Function mapping  */
+#define GPIO_AF3_TIM10         ((uint8_t)0x03U)  /* TIM10 Alternate Function mapping */
+#define GPIO_AF3_TIM11         ((uint8_t)0x03U)  /* TIM11 Alternate Function mapping */
+#define GPIO_AF3_LPTIM1        ((uint8_t)0x03U)  /* LPTIM1 Alternate Function mapping */
+#define GPIO_AF3_CEC           ((uint8_t)0x03U)  /* CEC Alternate Function mapping */
+#if defined (STM32F765xx) || defined(STM32F767xx) || defined(STM32F769xx) || defined(STM32F777xx) || defined(STM32F779xx)
+#define GPIO_AF3_DFSDM1         ((uint8_t)0x03U)  /* DFSDM1 Alternate Function mapping */
+#endif /* STM32F767xx || STM32F769xx || STM32F777xx || STM32F779xx */
+/** 
+  * @brief   AF 4 selection  
+  */ 
+#define GPIO_AF4_I2C1          ((uint8_t)0x04U)  /* I2C1 Alternate Function mapping */
+#define GPIO_AF4_I2C2          ((uint8_t)0x04U)  /* I2C2 Alternate Function mapping */
+#define GPIO_AF4_I2C3          ((uint8_t)0x04U)  /* I2C3 Alternate Function mapping */
+#define GPIO_AF4_I2C4          ((uint8_t)0x04U)  /* I2C4 Alternate Function mapping */
+#define GPIO_AF4_CEC           ((uint8_t)0x04U)  /* CEC Alternate Function mapping */
+#if defined (STM32F765xx) || defined(STM32F767xx) || defined(STM32F769xx) || defined(STM32F777xx) || defined(STM32F779xx)
+#define GPIO_AF4_USART1        ((uint8_t)0x04)  /* USART1 Alternate Function mapping */
+#endif /* STM32F767xx || STM32F769xx || STM32F777xx || STM32F779xx */   
+
+/** 
+  * @brief   AF 5 selection  
+  */ 
+#define GPIO_AF5_SPI1          ((uint8_t)0x05U)  /* SPI1 Alternate Function mapping        */
+#define GPIO_AF5_SPI2          ((uint8_t)0x05U)  /* SPI2/I2S2 Alternate Function mapping   */
+#define GPIO_AF5_SPI3          ((uint8_t)0x05U)  /* SPI3/I2S3 Alternate Function mapping   */
+#define GPIO_AF5_SPI4          ((uint8_t)0x05U)  /* SPI4 Alternate Function mapping        */
+#define GPIO_AF5_SPI5          ((uint8_t)0x05U)  /* SPI5 Alternate Function mapping        */
+#define GPIO_AF5_SPI6          ((uint8_t)0x05U)  /* SPI6 Alternate Function mapping        */
+
+/** 
+  * @brief   AF 6 selection  
+  */ 
+#define GPIO_AF6_SPI3          ((uint8_t)0x06U)  /* SPI3/I2S3 Alternate Function mapping  */
+#define GPIO_AF6_SAI1          ((uint8_t)0x06U)  /* SAI1 Alternate Function mapping       */
+#if defined (STM32F765xx) || defined(STM32F767xx) || defined(STM32F769xx) || defined(STM32F777xx) || defined(STM32F779xx)
+#define GPIO_AF6_UART4         ((uint8_t)0x06U)   /* UART4 Alternate Function mapping     */   
+#define GPIO_AF6_DFSDM1        ((uint8_t)0x06U)  /* DFSDM1 Alternate Function mapping     */
+#endif /* STM32F767xx || STM32F769xx || STM32F777xx || STM32F779xx */   
+
+/** 
+  * @brief   AF 7 selection  
+  */ 
+#define GPIO_AF7_USART1        ((uint8_t)0x07U)  /* USART1 Alternate Function mapping     */
+#define GPIO_AF7_USART2        ((uint8_t)0x07U)  /* USART2 Alternate Function mapping     */
+#define GPIO_AF7_USART3        ((uint8_t)0x07U)  /* USART3 Alternate Function mapping     */
+#define GPIO_AF7_UART5         ((uint8_t)0x07U)  /* UART5 Alternate Function mapping      */
+#define GPIO_AF7_SPDIFRX       ((uint8_t)0x07U)  /* SPDIF-RX Alternate Function mapping   */
+#define GPIO_AF7_SPI2          ((uint8_t)0x07U)  /* SPI2 Alternate Function mapping       */
+#define GPIO_AF7_SPI3          ((uint8_t)0x07U)  /* SPI3 Alternate Function mapping       */
+#if defined (STM32F765xx) || defined(STM32F767xx) || defined(STM32F769xx) || defined(STM32F777xx) || defined(STM32F779xx)
+#define GPIO_AF7_SPI6          ((uint8_t)0x07U)  /* SPI6 Alternate Function mapping       */
+#define GPIO_AF7_DFSDM1         ((uint8_t)0x07U) /* DFSDM1 Alternate Function mapping      */
+#endif /* STM32F767xx || STM32F769xx || STM32F777xx || STM32F779xx */  
+
+/** 
+  * @brief   AF 8 selection  
+  */ 
+#define GPIO_AF8_UART4         ((uint8_t)0x08U)  /* UART4 Alternate Function mapping  */
+#define GPIO_AF8_UART5         ((uint8_t)0x08U)  /* UART5 Alternate Function mapping  */
+#define GPIO_AF8_USART6        ((uint8_t)0x08U)  /* USART6 Alternate Function mapping */
+#define GPIO_AF8_UART7         ((uint8_t)0x08U)  /* UART7 Alternate Function mapping  */
+#define GPIO_AF8_UART8         ((uint8_t)0x08U)  /* UART8 Alternate Function mapping  */
+#define GPIO_AF8_SPDIFRX       ((uint8_t)0x08U)  /* SPIDIF-RX Alternate Function mapping */
+#define GPIO_AF8_SAI2          ((uint8_t)0x08U)  /* SAI2 Alternate Function mapping   */
+#if defined (STM32F765xx) || defined(STM32F767xx) || defined(STM32F769xx) || defined(STM32F777xx) || defined(STM32F779xx)
+#define GPIO_AF8_SPI6          ((uint8_t)0x08U)  /* SPI6 Alternate Function mapping   */  
+#endif /* STM32F767xx || STM32F769xx || STM32F777xx || STM32F779xx */    
+
+
+/** 
+  * @brief   AF 9 selection 
+  */ 
+#define GPIO_AF9_CAN1          ((uint8_t)0x09U)  /* CAN1 Alternate Function mapping    */
+#define GPIO_AF9_CAN2          ((uint8_t)0x09U)  /* CAN2 Alternate Function mapping    */
+#define GPIO_AF9_TIM12         ((uint8_t)0x09U)  /* TIM12 Alternate Function mapping   */
+#define GPIO_AF9_TIM13         ((uint8_t)0x09U)  /* TIM13 Alternate Function mapping   */
+#define GPIO_AF9_TIM14         ((uint8_t)0x09U)  /* TIM14 Alternate Function mapping   */
+#define GPIO_AF9_QUADSPI       ((uint8_t)0x09U)  /* QUADSPI Alternate Function mapping */
+#if defined(STM32F746xx) || defined(STM32F756xx) || defined(STM32F767xx) || defined(STM32F769xx) || defined(STM32F777xx) || defined(STM32F779xx) || defined(STM32F750xx)
+#define GPIO_AF9_LTDC          ((uint8_t)0x09U)  /* LCD-TFT Alternate Function mapping */
+#endif /* STM32F746xx || STM32F756xx || STM32F767xx || STM32F769xx || STM32F777xx || STM32F779xx || STM32F750xx */
+#if defined(STM32F746xx) || defined(STM32F756xx) || defined(STM32F765xx) || defined(STM32F765xx) || defined(STM32F767xx) || defined(STM32F769xx) || defined(STM32F777xx) || defined(STM32F779xx) || defined(STM32F750xx)
+#define GPIO_AF9_FMC           ((uint8_t)0x09U)   /* FMC Alternate Function mapping     */
+#endif /* STM32F746xx || STM32F756xx || STM32F767xx || STM32F769xx || STM32F777xx || STM32F779xx || STM32F750xx */
+/** 
+  * @brief   AF 10 selection  
+  */ 
+#define GPIO_AF10_OTG_FS        ((uint8_t)0xAU)  /* OTG_FS Alternate Function mapping */
+#define GPIO_AF10_OTG_HS        ((uint8_t)0xAU)  /* OTG_HS Alternate Function mapping */
+#define GPIO_AF10_QUADSPI       ((uint8_t)0xAU)  /* QUADSPI Alternate Function mapping */
+#define GPIO_AF10_SAI2          ((uint8_t)0xAU)  /* SAI2 Alternate Function mapping */
+#if defined (STM32F765xx) || defined(STM32F767xx) || defined(STM32F769xx) || defined(STM32F777xx) || defined(STM32F779xx)
+#define GPIO_AF10_DFSDM1         ((uint8_t)0x0AU)  /* DFSDM1 Alternate Function mapping  */
+#define GPIO_AF10_SDMMC2         ((uint8_t)0x0AU)  /* SDMMC2 Alternate Function mapping */   
+#define GPIO_AF10_LTDC           ((uint8_t)0x0AU)  /* LCD-TFT Alternate Function mapping */
+#endif /* STM32F767xx || STM32F769xx || STM32F777xx || STM32F779xx */   
+
+/** 
+  * @brief   AF 11 selection  
+  */ 
+#define GPIO_AF11_ETH           ((uint8_t)0x0BU)  /* ETHERNET Alternate Function mapping */
+#if defined(STM32F765xx) || defined (STM32F767xx) || defined (STM32F769xx) || defined (STM32F777xx) || defined (STM32F779xx)
+#define GPIO_AF11_CAN3          ((uint8_t)0x0BU)  /* CAN3 Alternate Function mapping     */
+#define GPIO_AF11_SDMMC2        ((uint8_t)0x0BU)  /* SDMMC2 Alternate Function mapping   */
+#define GPIO_AF11_I2C4          ((uint8_t)0x0BU)  /* I2C4 Alternate Function mapping     */   
+#endif /* STM32F767xx || STM32F769xx || STM32F777xx || STM32F779xx */
+   
+/** 
+  * @brief   AF 12 selection  
+  */ 
+#define GPIO_AF12_FMC           ((uint8_t)0xCU)  /* FMC Alternate Function mapping                      */
+#define GPIO_AF12_OTG_HS_FS     ((uint8_t)0xCU)  /* OTG HS configured in FS, Alternate Function mapping */
+#define GPIO_AF12_SDMMC1        ((uint8_t)0xCU)  /* SDMMC1 Alternate Function mapping                   */
+#if defined(STM32F765xx) || defined (STM32F767xx) || defined (STM32F769xx) || defined (STM32F777xx) || defined (STM32F779xx)   
+#define GPIO_AF12_MDIOS        ((uint8_t)0xCU)  /* SDMMC1 Alternate Function mapping                    */
+#define GPIO_AF12_UART7        ((uint8_t)0xCU)  /* UART7 Alternate Function mapping                     */   
+#endif /* STM32F767xx || STM32F769xx || STM32F777xx || STM32F779xx */
+   
+/** 
+  * @brief   AF 13 selection  
+  */ 
+#define GPIO_AF13_DCMI          ((uint8_t)0x0DU)  /* DCMI Alternate Function mapping */
+#if defined (STM32F769xx) || defined (STM32F779xx)   
+#define GPIO_AF13_DSI           ((uint8_t)0x0DU)  /* DSI Alternate Function mapping  */
+#endif /* STM32F767xx || STM32F769xx || STM32F777xx || STM32F779xx */   
+#if defined(STM32F746xx) || defined(STM32F756xx) || defined(STM32F767xx) || defined(STM32F769xx) || defined(STM32F777xx) || defined(STM32F779xx) || defined(STM32F750xx)
+#define GPIO_AF13_LTDC          ((uint8_t)0x0DU)  /* LTDC Alternate Function mapping */   
+   
+/** 
+  * @brief   AF 14 selection  
+  */
+#define GPIO_AF14_LTDC          ((uint8_t)0x0EU)  /* LCD-TFT Alternate Function mapping */
+#endif /* STM32F746xx || STM32F756xx || STM32F767xx || STM32F769xx || STM32F777xx || STM32F779xx || STM32F750xx */
+/** 
+  * @brief   AF 15 selection  
+  */ 
+#define GPIO_AF15_EVENTOUT      ((uint8_t)0x0FU)  /* EVENTOUT Alternate Function mapping */
+#endif /* STM32F745xx || STM32F746xx || STM32F756xx || STM32F765xx || STM32F767xx || STM32F769xx || STM32F777xx || STM32F779xx */
+/*----------------------------------------------------------------------------*/
+
+/*---------------------------- STM32F72xxx/STM32F73xxx -----------------------*/      
+#if defined(STM32F722xx) || defined(STM32F723xx) || defined(STM32F732xx) || defined(STM32F733xx) || defined(STM32F730xx)
+ /** 
+  * @brief   AF 0 selection  
+  */ 
+#define GPIO_AF0_RTC_50Hz      ((uint8_t)0x00U)  /* RTC_50Hz Alternate Function mapping                       */
+#define GPIO_AF0_MCO           ((uint8_t)0x00U)  /* MCO (MCO1 and MCO2) Alternate Function mapping            */
+#define GPIO_AF0_SWJ           ((uint8_t)0x00U)  /* SWJ (SWD and JTAG) Alternate Function mapping             */
+#define GPIO_AF0_TRACE         ((uint8_t)0x00U)  /* TRACE Alternate Function mapping                          */
+
+/** 
+  * @brief   AF 1 selection  
+  */ 
+#define GPIO_AF1_TIM1          ((uint8_t)0x01U)  /* TIM1 Alternate Function mapping */
+#define GPIO_AF1_TIM2          ((uint8_t)0x01U)  /* TIM2 Alternate Function mapping */
+
+/** 
+  * @brief   AF 2 selection  
+  */ 
+#define GPIO_AF2_TIM3          ((uint8_t)0x02U)  /* TIM3 Alternate Function mapping */
+#define GPIO_AF2_TIM4          ((uint8_t)0x02U)  /* TIM4 Alternate Function mapping */
+#define GPIO_AF2_TIM5          ((uint8_t)0x02U)  /* TIM5 Alternate Function mapping */
+
+/** 
+  * @brief   AF 3 selection  
+  */ 
+#define GPIO_AF3_TIM8          ((uint8_t)0x03U)  /* TIM8 Alternate Function mapping  */
+#define GPIO_AF3_TIM9          ((uint8_t)0x03U)  /* TIM9 Alternate Function mapping  */
+#define GPIO_AF3_TIM10         ((uint8_t)0x03U)  /* TIM10 Alternate Function mapping */
+#define GPIO_AF3_TIM11         ((uint8_t)0x03U)  /* TIM11 Alternate Function mapping */
+#define GPIO_AF3_LPTIM1        ((uint8_t)0x03U)  /* LPTIM1 Alternate Function mapping */
+
+/** 
+  * @brief   AF 4 selection  
+  */ 
+#define GPIO_AF4_I2C1          ((uint8_t)0x04U)  /* I2C1 Alternate Function mapping */
+#define GPIO_AF4_I2C2          ((uint8_t)0x04U)  /* I2C2 Alternate Function mapping */
+#define GPIO_AF4_I2C3          ((uint8_t)0x04U)  /* I2C3 Alternate Function mapping */ 
+
+/** 
+  * @brief   AF 5 selection  
+  */ 
+#define GPIO_AF5_SPI1          ((uint8_t)0x05U)  /* SPI1 Alternate Function mapping        */
+#define GPIO_AF5_SPI2          ((uint8_t)0x05U)  /* SPI2/I2S2 Alternate Function mapping   */
+#define GPIO_AF5_SPI3          ((uint8_t)0x05U)  /* SPI3/I2S3 Alternate Function mapping   */
+#define GPIO_AF5_SPI4          ((uint8_t)0x05U)  /* SPI4 Alternate Function mapping        */
+#define GPIO_AF5_SPI5          ((uint8_t)0x05U)  /* SPI5 Alternate Function mapping        */
+
+/** 
+  * @brief   AF 6 selection  
+  */ 
+#define GPIO_AF6_SPI3          ((uint8_t)0x06U)  /* SPI3/I2S3 Alternate Function mapping  */
+#define GPIO_AF6_SAI1          ((uint8_t)0x06U)  /* SAI1 Alternate Function mapping       */
+
+/** 
+  * @brief   AF 7 selection  
+  */ 
+#define GPIO_AF7_USART1        ((uint8_t)0x07U)  /* USART1 Alternate Function mapping     */
+#define GPIO_AF7_USART2        ((uint8_t)0x07U)  /* USART2 Alternate Function mapping     */
+#define GPIO_AF7_USART3        ((uint8_t)0x07U)  /* USART3 Alternate Function mapping     */
+#define GPIO_AF7_UART5         ((uint8_t)0x07U)  /* UART5 Alternate Function mapping      */
+#define GPIO_AF7_SPI2          ((uint8_t)0x07U)  /* SPI2 Alternate Function mapping       */
+#define GPIO_AF7_SPI3          ((uint8_t)0x07U)  /* SPI3 Alternate Function mapping       */ 
+
+/** 
+  * @brief   AF 8 selection  
+  */ 
+#define GPIO_AF8_UART4         ((uint8_t)0x08U)  /* UART4 Alternate Function mapping  */
+#define GPIO_AF8_UART5         ((uint8_t)0x08U)  /* UART5 Alternate Function mapping  */
+#define GPIO_AF8_USART6        ((uint8_t)0x08U)  /* USART6 Alternate Function mapping */
+#define GPIO_AF8_UART7         ((uint8_t)0x08U)  /* UART7 Alternate Function mapping  */
+#define GPIO_AF8_UART8         ((uint8_t)0x08U)  /* UART8 Alternate Function mapping  */
+#define GPIO_AF8_SAI2          ((uint8_t)0x08U)  /* SAI2 Alternate Function mapping   */
+
+/** 
+  * @brief   AF 9 selection 
+  */ 
+#define GPIO_AF9_CAN1          ((uint8_t)0x09U)  /* CAN1 Alternate Function mapping    */
+#define GPIO_AF9_TIM12         ((uint8_t)0x09U)  /* TIM12 Alternate Function mapping   */
+#define GPIO_AF9_TIM13         ((uint8_t)0x09U)  /* TIM13 Alternate Function mapping   */
+#define GPIO_AF9_TIM14         ((uint8_t)0x09U)  /* TIM14 Alternate Function mapping   */
+#define GPIO_AF9_QUADSPI       ((uint8_t)0x09U)  /* QUADSPI Alternate Function mapping */
+
+/** 
+  * @brief   AF 10 selection  
+  */ 
+#define GPIO_AF10_OTG_FS        ((uint8_t)0xAU)  /* OTG_FS Alternate Function mapping */
+#define GPIO_AF10_OTG_HS        ((uint8_t)0xAU)  /* OTG_HS Alternate Function mapping */
+#define GPIO_AF10_QUADSPI       ((uint8_t)0xAU)  /* QUADSPI Alternate Function mapping */
+#define GPIO_AF10_SAI2          ((uint8_t)0xAU)  /* SAI2 Alternate Function mapping */
+#define GPIO_AF10_SDMMC2        ((uint8_t)0x0AU) /* SDMMC2 Alternate Function mapping */   
+
+/** 
+  * @brief   AF 11 selection  
+  */ 
+#define GPIO_AF11_SDMMC2        ((uint8_t)0x0BU) /* SDMMC2 Alternate Function mapping   */
+   
+/** 
+  * @brief   AF 12 selection  
+  */ 
+#define GPIO_AF12_FMC           ((uint8_t)0xCU)  /* FMC Alternate Function mapping                      */
+#define GPIO_AF12_OTG_HS_FS     ((uint8_t)0xCU)  /* OTG HS configured in FS, Alternate Function mapping */
+#define GPIO_AF12_SDMMC1        ((uint8_t)0xCU)  /* SDMMC1 Alternate Function mapping                   */
+   
+/** 
+  * @brief   AF 13 selection  
+  */ 
+#define GPIO_AF13_RNG           ((uint8_t)0x0DU)  /* RNG Alternate Function mapping */   
+   
+/** 
+  * @brief   AF 15 selection  
+  */ 
+#define GPIO_AF15_EVENTOUT      ((uint8_t)0x0FU)  /* EVENTOUT Alternate Function mapping */     
+#endif /* STM32F722xx || STM32F723xx || STM32F732xx || STM32F733xx || STM32F730xx */
+/*----------------------------------------------------------------------------*/
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */
+
+/* Exported macro ------------------------------------------------------------*/
+/** @defgroup GPIOEx_Exported_Macros GPIO Exported Macros
+  * @{
+  */
+/**
+  * @}
+  */
+
+/* Exported functions --------------------------------------------------------*/ 
+/** @defgroup GPIOEx_Exported_Functions GPIO Exported Functions
+  * @{
+  */
+/**
+  * @}
+  */
+/* Private types -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private constants ---------------------------------------------------------*/
+/** @defgroup GPIOEx_Private_Constants GPIO Private Constants
+  * @{
+  */
+
+/**
+  * @brief   GPIO pin available on the platform
+  */
+/* Defines the available pins per GPIOs */
+#define GPIOA_PIN_AVAILABLE  GPIO_PIN_All
+#define GPIOB_PIN_AVAILABLE  GPIO_PIN_All
+#define GPIOC_PIN_AVAILABLE  GPIO_PIN_All
+#define GPIOD_PIN_AVAILABLE  GPIO_PIN_All
+#define GPIOE_PIN_AVAILABLE  GPIO_PIN_All
+#define GPIOF_PIN_AVAILABLE  GPIO_PIN_All
+#define GPIOG_PIN_AVAILABLE  GPIO_PIN_All
+#define GPIOI_PIN_AVAILABLE  GPIO_PIN_All
+#define GPIOJ_PIN_AVAILABLE  GPIO_PIN_All
+#define GPIOH_PIN_AVAILABLE  GPIO_PIN_All
+#define GPIOK_PIN_AVAILABLE  (GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3 | GPIO_PIN_4 | \
+                              GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7)
+
+/**
+  * @}
+  */
+
+/* Private macros ------------------------------------------------------------*/
+/** @defgroup GPIOEx_Private_Macros GPIO Private Macros
+  * @{
+  */
+/** @defgroup GPIOEx_Get_Port_Index GPIO Get Port Index
+  * @{
+  */
+#if defined (STM32F745xx) || defined (STM32F746xx) || defined (STM32F756xx) || defined (STM32F765xx) ||\
+    defined (STM32F767xx) || defined (STM32F769xx) || defined (STM32F777xx) || defined (STM32F779xx) ||\
+    defined (STM32F750xx)
+#define GPIO_GET_INDEX(__GPIOx__)   (uint8_t)(((__GPIOx__) == (GPIOA))? 0U :\
+                                              ((__GPIOx__) == (GPIOB))? 1U :\
+                                              ((__GPIOx__) == (GPIOC))? 2U :\
+                                              ((__GPIOx__) == (GPIOD))? 3U :\
+                                              ((__GPIOx__) == (GPIOE))? 4U :\
+                                              ((__GPIOx__) == (GPIOF))? 5U :\
+                                              ((__GPIOx__) == (GPIOG))? 6U :\
+                                              ((__GPIOx__) == (GPIOH))? 7U :\
+                                              ((__GPIOx__) == (GPIOI))? 8U :\
+                                              ((__GPIOx__) == (GPIOJ))? 9U : 10U)
+#endif /* STM32F745xx || STM32F746xx || STM32F756xx || STM32F765xx || STM32F767xx || STM32F769xx || STM32F777xx || STM32F779xx || STM32F750xx */
+
+#if defined (STM32F722xx) || defined (STM32F723xx) || defined (STM32F732xx) || defined (STM32F733xx) || defined (STM32F730xx)
+#define GPIO_GET_INDEX(__GPIOx__)   (uint8_t)(((__GPIOx__) == (GPIOA))? 0U :\
+                                              ((__GPIOx__) == (GPIOB))? 1U :\
+                                              ((__GPIOx__) == (GPIOC))? 2U :\
+                                              ((__GPIOx__) == (GPIOD))? 3U :\
+                                              ((__GPIOx__) == (GPIOE))? 4U :\
+                                              ((__GPIOx__) == (GPIOF))? 5U :\
+                                              ((__GPIOx__) == (GPIOG))? 6U :\
+                                              ((__GPIOx__) == (GPIOH))? 7U : 8U)
+#endif /* STM32F722xx || STM32F723xx || STM32F732xx || STM32F733xx || STM32F730xx */
+/**
+  * @}
+  */
+
+#define IS_GPIO_PIN_AVAILABLE(__INSTANCE__,__PIN__)  \
+           ((((__INSTANCE__) == GPIOA) && (((__PIN__) & (GPIOA_PIN_AVAILABLE)) != 0) && (((__PIN__) | (GPIOA_PIN_AVAILABLE)) == (GPIOA_PIN_AVAILABLE))) || \
+            (((__INSTANCE__) == GPIOB) && (((__PIN__) & (GPIOB_PIN_AVAILABLE)) != 0) && (((__PIN__) | (GPIOB_PIN_AVAILABLE)) == (GPIOB_PIN_AVAILABLE))) || \
+            (((__INSTANCE__) == GPIOC) && (((__PIN__) & (GPIOC_PIN_AVAILABLE)) != 0) && (((__PIN__) | (GPIOC_PIN_AVAILABLE)) == (GPIOC_PIN_AVAILABLE))) || \
+            (((__INSTANCE__) == GPIOD) && (((__PIN__) & (GPIOD_PIN_AVAILABLE)) != 0) && (((__PIN__) | (GPIOD_PIN_AVAILABLE)) == (GPIOD_PIN_AVAILABLE))) || \
+            (((__INSTANCE__) == GPIOE) && (((__PIN__) & (GPIOE_PIN_AVAILABLE)) != 0) && (((__PIN__) | (GPIOE_PIN_AVAILABLE)) == (GPIOE_PIN_AVAILABLE))) || \
+            (((__INSTANCE__) == GPIOF) && (((__PIN__) & (GPIOF_PIN_AVAILABLE)) != 0) && (((__PIN__) | (GPIOF_PIN_AVAILABLE)) == (GPIOF_PIN_AVAILABLE))) || \
+			(((__INSTANCE__) == GPIOG) && (((__PIN__) & (GPIOG_PIN_AVAILABLE)) != 0) && (((__PIN__) | (GPIOG_PIN_AVAILABLE)) == (GPIOG_PIN_AVAILABLE))) || \
+			(((__INSTANCE__) == GPIOI) && (((__PIN__) & (GPIOI_PIN_AVAILABLE)) != 0) && (((__PIN__) | (GPIOI_PIN_AVAILABLE)) == (GPIOI_PIN_AVAILABLE))) || \
+			(((__INSTANCE__) == GPIOJ) && (((__PIN__) & (GPIOJ_PIN_AVAILABLE)) != 0) && (((__PIN__) | (GPIOJ_PIN_AVAILABLE)) == (GPIOJ_PIN_AVAILABLE))) || \
+			(((__INSTANCE__) == GPIOK) && (((__PIN__) & (GPIOK_PIN_AVAILABLE)) != 0) && (((__PIN__) | (GPIOK_PIN_AVAILABLE)) == (GPIOK_PIN_AVAILABLE))) || \
+			(((__INSTANCE__) == GPIOH) && (((__PIN__) & (GPIOH_PIN_AVAILABLE)) != 0) && (((__PIN__) | (GPIOH_PIN_AVAILABLE)) == (GPIOH_PIN_AVAILABLE))))
+/** @defgroup GPIOEx_IS_Alternat_function_selection GPIO Check Alternate Function
+  * @{
+  */
+#if defined(STM32F756xx) || defined(STM32F746xx)  || defined(STM32F750xx)
+#define IS_GPIO_AF(AF)   (((AF) == GPIO_AF0_RTC_50Hz)   || ((AF) == GPIO_AF1_TIM1)        || \
+                          ((AF) == GPIO_AF0_SWJ)        || ((AF) == GPIO_AF0_TRACE)      || \
+                          ((AF) == GPIO_AF0_MCO)       || ((AF) == GPIO_AF1_TIM2)       || \
+                          ((AF) == GPIO_AF2_TIM3)       || ((AF) == GPIO_AF2_TIM4)       || \
+                          ((AF) == GPIO_AF2_TIM5)       || ((AF) == GPIO_AF3_TIM8)       || \
+                          ((AF) == GPIO_AF3_TIM9)       || ((AF) == GPIO_AF3_TIM10)      || \
+                          ((AF) == GPIO_AF3_TIM11)      || ((AF) == GPIO_AF3_LPTIM1)     || \
+                          ((AF) == GPIO_AF3_CEC)        || ((AF) == GPIO_AF4_CEC)        || \
+                          ((AF) == GPIO_AF4_I2C1)       || ((AF) == GPIO_AF4_I2C2)       || \
+                          ((AF) == GPIO_AF4_I2C3)       || ((AF) == GPIO_AF4_I2C4)       || \
+                          ((AF) == GPIO_AF5_SPI1)       || ((AF) == GPIO_AF5_SPI2)       || \
+                          ((AF) == GPIO_AF5_SPI3)       || ((AF) == GPIO_AF5_SPI4)       || \
+                          ((AF) == GPIO_AF5_SPI5)       || ((AF) == GPIO_AF5_SPI6)       || \
+                          ((AF) == GPIO_AF6_SPI3)       || ((AF) == GPIO_AF6_SAI1)       || \
+                          ((AF) == GPIO_AF7_SPI3)       || ((AF) == GPIO_AF7_SPI2)        || \
+                          ((AF) == GPIO_AF7_USART1)     || ((AF) == GPIO_AF7_USART2)      || \
+                          ((AF) == GPIO_AF7_USART3)     || ((AF) == GPIO_AF7_UART5)       || \
+                          ((AF) == GPIO_AF7_SPDIFRX)    || ((AF) == GPIO_AF8_SPDIFRX)     || \
+                          ((AF) == GPIO_AF8_SAI2)       || ((AF) == GPIO_AF8_USART6)      || \
+                          ((AF) == GPIO_AF8_UART4)      || ((AF) == GPIO_AF8_UART5)       || \
+                          ((AF) == GPIO_AF8_UART7)      || ((AF) == GPIO_AF8_UART8)       || \
+                          ((AF) == GPIO_AF9_CAN1)       || ((AF) == GPIO_AF9_CAN2)        || \
+                          ((AF) == GPIO_AF9_TIM12)      || ((AF) == GPIO_AF9_TIM12)      || \
+                          ((AF) == GPIO_AF9_TIM14)      || ((AF) == GPIO_AF9_QUADSPI)    || \
+                          ((AF) == GPIO_AF9_LTDC)       || ((AF) == GPIO_AF10_OTG_FS)    || \
+                          ((AF) == GPIO_AF10_OTG_HS)    || ((AF) == GPIO_AF10_SAI2)      || \
+                          ((AF) == GPIO_AF10_QUADSPI)   || ((AF) == GPIO_AF11_ETH)       || \
+                          ((AF) == GPIO_AF12_OTG_HS_FS) || ((AF) == GPIO_AF12_SDMMC1)     || \
+                          ((AF) == GPIO_AF12_FMC)       || ((AF) == GPIO_AF15_EVENTOUT)  || \
+                          ((AF) == GPIO_AF13_DCMI)      || ((AF) == GPIO_AF14_LTDC))
+#elif defined(STM32F745xx)
+#define IS_GPIO_AF(AF)   (((AF) == GPIO_AF0_RTC_50Hz)   || ((AF) == GPIO_AF1_TIM1)       || \
+                          ((AF) == GPIO_AF0_SWJ)        || ((AF) == GPIO_AF0_TRACE)      || \
+                          ((AF) == GPIO_AF0_MCO)       || ((AF) == GPIO_AF1_TIM2)        || \
+                          ((AF) == GPIO_AF2_TIM3)       || ((AF) == GPIO_AF2_TIM4)       || \
+                          ((AF) == GPIO_AF2_TIM5)       || ((AF) == GPIO_AF3_TIM8)       || \
+                          ((AF) == GPIO_AF3_TIM9)       || ((AF) == GPIO_AF3_TIM10)      || \
+                          ((AF) == GPIO_AF3_TIM11)      || ((AF) == GPIO_AF3_LPTIM1)     || \
+                          ((AF) == GPIO_AF3_CEC)        || ((AF) == GPIO_AF4_CEC)        || \
+                          ((AF) == GPIO_AF4_I2C1)       || ((AF) == GPIO_AF4_I2C2)       || \
+                          ((AF) == GPIO_AF4_I2C3)       || ((AF) == GPIO_AF4_I2C4)       || \
+                          ((AF) == GPIO_AF5_SPI1)       || ((AF) == GPIO_AF5_SPI2)       || \
+                          ((AF) == GPIO_AF5_SPI3)       || ((AF) == GPIO_AF5_SPI4)       || \
+                          ((AF) == GPIO_AF5_SPI5)       || ((AF) == GPIO_AF5_SPI6)       || \
+                          ((AF) == GPIO_AF6_SPI3)       || ((AF) == GPIO_AF6_SAI1)       || \
+                          ((AF) == GPIO_AF7_SPI3)       || ((AF) == GPIO_AF7_SPI2)        || \
+                          ((AF) == GPIO_AF7_USART1)     || ((AF) == GPIO_AF7_USART2)      || \
+                          ((AF) == GPIO_AF7_USART3)     || ((AF) == GPIO_AF7_UART5)       || \
+                          ((AF) == GPIO_AF7_SPDIFRX)    || ((AF) == GPIO_AF8_SPDIFRX)     || \
+                          ((AF) == GPIO_AF8_SAI2)       || ((AF) == GPIO_AF8_USART6)      || \
+                          ((AF) == GPIO_AF8_UART4)      || ((AF) == GPIO_AF8_UART5)       || \
+                          ((AF) == GPIO_AF8_UART7)      || ((AF) == GPIO_AF8_UART8)       || \
+                          ((AF) == GPIO_AF9_CAN1)       || ((AF) == GPIO_AF9_CAN2)        || \
+                          ((AF) == GPIO_AF9_TIM12)      || ((AF) == GPIO_AF9_TIM12)      || \
+                          ((AF) == GPIO_AF9_TIM14)      || ((AF) == GPIO_AF9_QUADSPI)    || \
+                          ((AF) == GPIO_AF13_DCMI)      || ((AF) == GPIO_AF10_OTG_FS)    || \
+                          ((AF) == GPIO_AF10_OTG_HS)    || ((AF) == GPIO_AF10_SAI2)      || \
+                          ((AF) == GPIO_AF10_QUADSPI)   || ((AF) == GPIO_AF11_ETH)       || \
+                          ((AF) == GPIO_AF12_OTG_HS_FS) || ((AF) == GPIO_AF12_SDMMC1)    || \
+                          ((AF) == GPIO_AF12_FMC)       || ((AF) == GPIO_AF15_EVENTOUT))
+#elif defined(STM32F767xx) || defined(STM32F777xx)
+#define IS_GPIO_AF(AF)   (((AF) == GPIO_AF0_RTC_50Hz)   || ((AF) == GPIO_AF1_TIM1)        || \
+                          ((AF) == GPIO_AF0_SWJ)        || ((AF) == GPIO_AF0_TRACE)      || \
+                          ((AF) == GPIO_AF0_MCO)       || ((AF) == GPIO_AF1_TIM2)       || \
+                          ((AF) == GPIO_AF2_TIM3)       || ((AF) == GPIO_AF2_TIM4)       || \
+                          ((AF) == GPIO_AF2_TIM5)       || ((AF) == GPIO_AF3_TIM8)       || \
+                          ((AF) == GPIO_AF3_TIM9)       || ((AF) == GPIO_AF3_TIM10)      || \
+                          ((AF) == GPIO_AF3_TIM11)      || ((AF) == GPIO_AF3_LPTIM1)     || \
+                          ((AF) == GPIO_AF3_CEC)        || ((AF) == GPIO_AF4_CEC)        || \
+                          ((AF) == GPIO_AF4_I2C1)       || ((AF) == GPIO_AF4_I2C2)       || \
+                          ((AF) == GPIO_AF4_I2C3)       || ((AF) == GPIO_AF4_I2C4)       || \
+                          ((AF) == GPIO_AF5_SPI1)       || ((AF) == GPIO_AF5_SPI2)       || \
+                          ((AF) == GPIO_AF5_SPI3)       || ((AF) == GPIO_AF5_SPI4)       || \
+                          ((AF) == GPIO_AF5_SPI5)       || ((AF) == GPIO_AF5_SPI6)       || \
+                          ((AF) == GPIO_AF6_SPI3)       || ((AF) == GPIO_AF6_SAI1)       || \
+                          ((AF) == GPIO_AF7_SPI3)       || ((AF) == GPIO_AF7_SPI2)       || \
+                          ((AF) == GPIO_AF7_USART1)     || ((AF) == GPIO_AF7_USART2)     || \
+                          ((AF) == GPIO_AF7_USART3)     || ((AF) == GPIO_AF7_UART5)      || \
+                          ((AF) == GPIO_AF7_SPDIFRX)    || ((AF) == GPIO_AF8_SPDIFRX)    || \
+                          ((AF) == GPIO_AF8_SAI2)       || ((AF) == GPIO_AF8_USART6)     || \
+                          ((AF) == GPIO_AF8_UART4)      || ((AF) == GPIO_AF8_UART5)      || \
+                          ((AF) == GPIO_AF8_UART7)      || ((AF) == GPIO_AF8_UART8)      || \
+                          ((AF) == GPIO_AF9_CAN1)       || ((AF) == GPIO_AF9_CAN2)       || \
+                          ((AF) == GPIO_AF9_TIM12)      || ((AF) == GPIO_AF9_TIM12)      || \
+                          ((AF) == GPIO_AF9_TIM14)      || ((AF) == GPIO_AF9_QUADSPI)    || \
+                          ((AF) == GPIO_AF10_OTG_FS)    || ((AF) == GPIO_AF9_LTDC)       || \
+                          ((AF) == GPIO_AF10_OTG_HS)    || ((AF) == GPIO_AF10_SAI2)      || \
+                          ((AF) == GPIO_AF10_QUADSPI)   || ((AF) == GPIO_AF11_ETH)       || \
+                          ((AF) == GPIO_AF10_SDMMC2)    || ((AF) == GPIO_AF11_SDMMC2)    || \
+                          ((AF) == GPIO_AF11_CAN3)      || ((AF) == GPIO_AF12_OTG_HS_FS) || \
+                          ((AF) == GPIO_AF12_SDMMC1)    || ((AF) == GPIO_AF12_FMC)       || \
+                          ((AF) == GPIO_AF15_EVENTOUT)  || ((AF) == GPIO_AF13_DCMI)      || \
+		                  ((AF) == GPIO_AF14_LTDC))
+#elif defined(STM32F769xx) || defined(STM32F779xx)
+#define IS_GPIO_AF(AF)   (((AF) == GPIO_AF0_RTC_50Hz)   || ((AF) == GPIO_AF1_TIM1)        || \
+                          ((AF) == GPIO_AF0_SWJ)        || ((AF) == GPIO_AF0_TRACE)      || \
+                          ((AF) == GPIO_AF0_MCO)        || ((AF) == GPIO_AF1_TIM2)       || \
+                          ((AF) == GPIO_AF2_TIM3)       || ((AF) == GPIO_AF2_TIM4)       || \
+                          ((AF) == GPIO_AF2_TIM5)       || ((AF) == GPIO_AF3_TIM8)       || \
+                          ((AF) == GPIO_AF3_TIM9)       || ((AF) == GPIO_AF3_TIM10)      || \
+                          ((AF) == GPIO_AF3_TIM11)      || ((AF) == GPIO_AF3_LPTIM1)     || \
+                          ((AF) == GPIO_AF3_CEC)        || ((AF) == GPIO_AF4_CEC)        || \
+                          ((AF) == GPIO_AF4_I2C1)       || ((AF) == GPIO_AF4_I2C2)       || \
+                          ((AF) == GPIO_AF4_I2C3)       || ((AF) == GPIO_AF4_I2C4)       || \
+                          ((AF) == GPIO_AF5_SPI1)       || ((AF) == GPIO_AF5_SPI2)       || \
+                          ((AF) == GPIO_AF5_SPI3)       || ((AF) == GPIO_AF5_SPI4)       || \
+                          ((AF) == GPIO_AF5_SPI5)       || ((AF) == GPIO_AF5_SPI6)       || \
+                          ((AF) == GPIO_AF6_SPI3)       || ((AF) == GPIO_AF6_SAI1)       || \
+                          ((AF) == GPIO_AF7_SPI3)       || ((AF) == GPIO_AF7_SPI2)       || \
+                          ((AF) == GPIO_AF7_USART1)     || ((AF) == GPIO_AF7_USART2)     || \
+                          ((AF) == GPIO_AF7_USART3)     || ((AF) == GPIO_AF7_UART5)      || \
+                          ((AF) == GPIO_AF7_SPDIFRX)    || ((AF) == GPIO_AF8_SPDIFRX)    || \
+                          ((AF) == GPIO_AF8_SAI2)       || ((AF) == GPIO_AF8_USART6)     || \
+                          ((AF) == GPIO_AF8_UART4)      || ((AF) == GPIO_AF8_UART5)      || \
+                          ((AF) == GPIO_AF8_UART7)      || ((AF) == GPIO_AF8_UART8)      || \
+                          ((AF) == GPIO_AF9_CAN1)       || ((AF) == GPIO_AF9_CAN2)       || \
+                          ((AF) == GPIO_AF9_TIM12)      || ((AF) == GPIO_AF9_TIM12)      || \
+                          ((AF) == GPIO_AF9_TIM14)      || ((AF) == GPIO_AF9_QUADSPI)    || \
+                          ((AF) == GPIO_AF9_LTDC)       || ((AF) == GPIO_AF10_OTG_FS)    || \
+                          ((AF) == GPIO_AF10_OTG_HS)    || ((AF) == GPIO_AF10_SAI2)      || \
+                          ((AF) == GPIO_AF10_QUADSPI)   || ((AF) == GPIO_AF11_ETH)       || \
+                          ((AF) == GPIO_AF10_SDMMC2)    || ((AF) == GPIO_AF11_SDMMC2)    || \
+                          ((AF) == GPIO_AF11_CAN3)      || ((AF) == GPIO_AF12_OTG_HS_FS) || \
+                          ((AF) == GPIO_AF12_SDMMC1)    || ((AF) == GPIO_AF12_FMC)       || \
+                          ((AF) == GPIO_AF15_EVENTOUT)  || ((AF) == GPIO_AF13_DCMI)      || \
+                          ((AF) == GPIO_AF14_LTDC)      || ((AF) == GPIO_AF13_DSI))
+#elif defined(STM32F765xx)
+#define IS_GPIO_AF(AF)   (((AF) == GPIO_AF0_RTC_50Hz)   || ((AF) == GPIO_AF1_TIM1)        || \
+                          ((AF) == GPIO_AF0_SWJ)        || ((AF) == GPIO_AF0_TRACE)      || \
+                          ((AF) == GPIO_AF0_MCO)        || ((AF) == GPIO_AF1_TIM2)       || \
+                          ((AF) == GPIO_AF2_TIM3)       || ((AF) == GPIO_AF2_TIM4)       || \
+                          ((AF) == GPIO_AF2_TIM5)       || ((AF) == GPIO_AF3_TIM8)       || \
+                          ((AF) == GPIO_AF3_TIM9)       || ((AF) == GPIO_AF3_TIM10)      || \
+                          ((AF) == GPIO_AF3_TIM11)      || ((AF) == GPIO_AF3_LPTIM1)     || \
+                          ((AF) == GPIO_AF3_CEC)        || ((AF) == GPIO_AF4_CEC)        || \
+                          ((AF) == GPIO_AF4_I2C1)       || ((AF) == GPIO_AF4_I2C2)       || \
+                          ((AF) == GPIO_AF4_I2C3)       || ((AF) == GPIO_AF4_I2C4)       || \
+                          ((AF) == GPIO_AF5_SPI1)       || ((AF) == GPIO_AF5_SPI2)       || \
+                          ((AF) == GPIO_AF5_SPI3)       || ((AF) == GPIO_AF5_SPI4)       || \
+                          ((AF) == GPIO_AF5_SPI5)       || ((AF) == GPIO_AF5_SPI6)       || \
+                          ((AF) == GPIO_AF6_SPI3)       || ((AF) == GPIO_AF6_SAI1)       || \
+                          ((AF) == GPIO_AF7_SPI3)       || ((AF) == GPIO_AF7_SPI2)       || \
+                          ((AF) == GPIO_AF7_USART1)     || ((AF) == GPIO_AF7_USART2)     || \
+                          ((AF) == GPIO_AF7_USART3)     || ((AF) == GPIO_AF7_UART5)      || \
+                          ((AF) == GPIO_AF7_SPDIFRX)    || ((AF) == GPIO_AF8_SPDIFRX)    || \
+                          ((AF) == GPIO_AF8_SAI2)       || ((AF) == GPIO_AF8_USART6)     || \
+                          ((AF) == GPIO_AF8_UART4)      || ((AF) == GPIO_AF8_UART5)      || \
+                          ((AF) == GPIO_AF8_UART7)      || ((AF) == GPIO_AF8_UART8)      || \
+                          ((AF) == GPIO_AF9_CAN1)       || ((AF) == GPIO_AF9_CAN2)       || \
+                          ((AF) == GPIO_AF9_TIM12)      || ((AF) == GPIO_AF9_TIM12)      || \
+                          ((AF) == GPIO_AF9_TIM14)      || ((AF) == GPIO_AF9_QUADSPI)    || \
+                          ((AF) == GPIO_AF10_OTG_HS)    || ((AF) == GPIO_AF10_SAI2)      || \
+                          ((AF) == GPIO_AF10_QUADSPI)   || ((AF) == GPIO_AF11_ETH)       || \
+                          ((AF) == GPIO_AF10_SDMMC2)    || ((AF) == GPIO_AF11_SDMMC2)    || \
+                          ((AF) == GPIO_AF11_CAN3)      || ((AF) == GPIO_AF12_OTG_HS_FS) || \
+                          ((AF) == GPIO_AF12_SDMMC1)    || ((AF) == GPIO_AF12_FMC)       || \
+                          ((AF) == GPIO_AF15_EVENTOUT)  || ((AF) == GPIO_AF13_DCMI)      || \
+                          ((AF) == GPIO_AF10_OTG_FS))
+#elif defined (STM32F722xx) || defined (STM32F723xx) || defined (STM32F732xx) || defined (STM32F733xx) || defined (STM32F730xx)
+#define IS_GPIO_AF(AF)   (((AF) == GPIO_AF0_RTC_50Hz)   || ((AF) == GPIO_AF1_TIM1)        || \
+                          ((AF) == GPIO_AF0_SWJ)        || ((AF) == GPIO_AF0_TRACE)      || \
+                          ((AF) == GPIO_AF0_MCO)        || ((AF) == GPIO_AF1_TIM2)       || \
+                          ((AF) == GPIO_AF2_TIM3)       || ((AF) == GPIO_AF2_TIM4)       || \
+                          ((AF) == GPIO_AF2_TIM5)       || ((AF) == GPIO_AF3_TIM8)       || \
+                          ((AF) == GPIO_AF3_TIM9)       || ((AF) == GPIO_AF3_TIM10)      || \
+                          ((AF) == GPIO_AF3_TIM11)      || ((AF) == GPIO_AF3_LPTIM1)     || \
+                          ((AF) == GPIO_AF4_I2C1)       || ((AF) == GPIO_AF4_I2C2)       || \
+                          ((AF) == GPIO_AF4_I2C3)       || ((AF) == GPIO_AF5_SPI1)       || \
+                          ((AF) == GPIO_AF5_SPI2)       || ((AF) == GPIO_AF5_SPI3)       || \
+                          ((AF) == GPIO_AF5_SPI4)       || ((AF) == GPIO_AF5_SPI5)       || \
+                          ((AF) == GPIO_AF6_SPI3)       || ((AF) == GPIO_AF6_SAI1)       || \
+                          ((AF) == GPIO_AF7_SPI3)       || ((AF) == GPIO_AF7_SPI2)       || \
+                          ((AF) == GPIO_AF7_USART1)     || ((AF) == GPIO_AF7_USART2)     || \
+                          ((AF) == GPIO_AF7_USART3)     || ((AF) == GPIO_AF7_UART5)      || \
+                          ((AF) == GPIO_AF8_SAI2)       || ((AF) == GPIO_AF8_USART6)     || \
+                          ((AF) == GPIO_AF8_UART4)      || ((AF) == GPIO_AF8_UART5)      || \
+                          ((AF) == GPIO_AF8_UART7)      || ((AF) == GPIO_AF8_UART8)      || \
+                          ((AF) == GPIO_AF9_CAN1)       || ((AF) == GPIO_AF9_TIM12)      || \
+                          ((AF) == GPIO_AF9_TIM12)      || ((AF) == GPIO_AF9_TIM14)      || \
+                          ((AF) == GPIO_AF9_QUADSPI)    || ((AF) == GPIO_AF10_OTG_HS)    || \
+                          ((AF) == GPIO_AF10_SAI2)      || ((AF) == GPIO_AF10_QUADSPI)   || \
+                          ((AF) == GPIO_AF10_SDMMC2)    || ((AF) == GPIO_AF11_SDMMC2)    || \
+                          ((AF) == GPIO_AF12_OTG_HS_FS) || ((AF) == GPIO_AF12_SDMMC1)    || \
+                          ((AF) == GPIO_AF12_FMC)       || ((AF) == GPIO_AF15_EVENTOUT)  || \
+                          ((AF) == GPIO_AF10_OTG_FS))
+#endif /* STM32F756xx || STM32F746xx || STM32F750xx */
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */
+
+/* Private functions ---------------------------------------------------------*/
+/** @defgroup GPIOEx_Private_Functions GPIO Private Functions
+  * @{
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */ 
+  
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM32F7xx_HAL_GPIO_EX_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

examples/stm32-freertos-tcp/Makefile

@@ -0,0 +1,95 @@
+# FreeRTOS/{FreeRTOS-Kernel V10.4.3,FreeRTOS-Plus-TCP V2.3.2}
+PROG = firmware
+ARCH = stm32f7
+PROJECT_ROOT_PATH = $(realpath $(CURDIR)/../..)
+DOCKER ?= docker run -it --rm -v $(PROJECT_ROOT_PATH):$(PROJECT_ROOT_PATH) -w $(CURDIR) mdashnet/armgcc
+FREERTOS_KERNEL_PATH ?= $(PROJECT_ROOT_PATH)/test/freertos-kernel
+FREERTOS_PLUS_TCP_PATH ?= $(PROJECT_ROOT_PATH)/test/freertos-tcp
+
+MONGOOSE_FLAGS = -DMG_ARCH=MG_ARCH_FREERTOS_TCP -DMG_ENABLE_FS=1
+MCU_FLAGS = -mcpu=cortex-m7 -mthumb -mfloat-abi=softfp -mfpu=vfpv4 
+#-mcpu=cortex-m7 -mthumb -mfpu=fpv5-sp-d16 -mfloat-abi=hard
+
+INCLUDES = -I$(PROJECT_ROOT_PATH) -I$(ARCH) -I$(FREERTOS_KERNEL_PATH)/include -I$(FREERTOS_PLUS_TCP_PATH)/include
+INCLUDES += -I$(FREERTOS_PLUS_TCP_PATH)/tools/tcp_utilities/include
+INCLUDES += -I$(FREERTOS_PLUS_TCP_PATH)/../Utilities/include
+#INCLUDES += -IH2
+#INCLUDES += -I/Users/lsm/src/htibosch/plus/stm32F7/ST_Library/include
+INCLUDES += -IHAL
+INCLUDES += -I$(FREERTOS_PLUS_TCP_PATH)/portable/Compiler/GCC
+INCLUDES += -I$(FREERTOS_PLUS_TCP_PATH)/portable/NetworkInterface/STM32Fxx
+INCLUDES += -I$(FREERTOS_PLUS_TCP_PATH)/portable/NetworkInterface/include
+NETFLAGS = -DSTM32F7xx -DSTM32F746xx -Wno-sign-compare -Wno-unused-function #-Wno-cpp
+
+CFLAGS = -g3 -O0 -W -Wall $(MCU_FLAGS)
+CFLAGS += $(INCLUDES) $(MONGOOSE_FLAGS) $(NETFLAGS) $(EXTRA)
+
+LINKFLAGS = -T$(ARCH)/link.ld -mcpu=cortex-m7 -mthumb -nostartfiles --specs rdimon.specs -Wl,--gc-sections
+
+SOURCES = main.c $(PROJECT_ROOT_PATH)/mongoose.c
+SOURCES += $(wildcard HAL/*.c)
+#SOURCES += -I$(realpath $(FREERTOS_KERNEL_PATH)/../../stm32F7/ST_Library/sources)/
+
+# FreeRTOS kernel sources
+SOURCES += $(wildcard $(FREERTOS_KERNEL_PATH)/*.c)
+SOURCES += $(FREERTOS_KERNEL_PATH)/portable/MemMang/heap_5.c
+SOURCES += $(FREERTOS_KERNEL_PATH)/portable/GCC/ARM_CM7/r0p1/port.c
+
+# FreeRTOS TCP stack sources
+SOURCES += $(FREERTOS_PLUS_TCP_PATH)/FreeRTOS_ARP.c 
+SOURCES += $(FREERTOS_PLUS_TCP_PATH)/FreeRTOS_DHCP.c 
+SOURCES += $(FREERTOS_PLUS_TCP_PATH)/FreeRTOS_DNS.c 
+SOURCES += $(FREERTOS_PLUS_TCP_PATH)/FreeRTOS_IP.c 
+SOURCES += $(FREERTOS_PLUS_TCP_PATH)/FreeRTOS_Sockets.c 
+SOURCES += $(FREERTOS_PLUS_TCP_PATH)/FreeRTOS_Stream_Buffer.c 
+SOURCES += $(FREERTOS_PLUS_TCP_PATH)/FreeRTOS_TCP_IP.c
+SOURCES += $(FREERTOS_PLUS_TCP_PATH)/FreeRTOS_TCP_WIN.c 
+SOURCES += $(FREERTOS_PLUS_TCP_PATH)/FreeRTOS_UDP_IP.c 
+SOURCES += $(FREERTOS_PLUS_TCP_PATH)/portable/NetworkInterface/Common/phyHandling.c
+SOURCES += $(FREERTOS_PLUS_TCP_PATH)/portable/BufferManagement/BufferAllocation_1.c
+SOURCES += $(FREERTOS_PLUS_TCP_PATH)/portable/NetworkInterface/STM32Fxx/NetworkInterface.c
+SOURCES += $(FREERTOS_PLUS_TCP_PATH)/portable/NetworkInterface/STM32Fxx/stm32fxx_hal_eth.c 
+
+OBJECTS = obj/boot.o $(SOURCES:%.c=obj/%.o)
+
+all: $(PROG).hex
+
+$(PROG).bin: $(PROG).elf
+	$(DOCKER) arm-none-eabi-objcopy -O binary $< $@
+
+$(PROG).hex: $(PROG).bin
+	$(DOCKER) arm-none-eabi-objcopy -I binary -O ihex --change-address 0x8000000 $< $@
+
+$(PROG).elf: $(OBJECTS) Makefile
+	$(DOCKER) arm-none-eabi-gcc $(OBJECTS) $(LINKFLAGS) -o $@
+	$(DOCKER) arm-none-eabi-size -A $@
+
+obj/%.o: %.c
+	@mkdir -p $(dir $@)
+	$(DOCKER) arm-none-eabi-gcc $(CFLAGS) -c $< -o $@
+
+obj/boot.o: $(ARCH)/boot.s
+	@mkdir -p $(dir $@)
+	$(DOCKER) arm-none-eabi-as -g3 --warn --fatal-warnings $(MCU_FLAGS) $< -o $@
+
+flash: $(PROG).bin
+	st-flash --reset write $< 0x8000000
+
+openocd:
+	openocd -f openocd.cfg
+
+ELF ?= $(PROG).elf
+gdb: #$(PROG).elf
+	arm-none-eabi-gdb \
+		-ex 'set confirm off' \
+        -ex 'target extended-remote :3333' \
+        -ex 'monitor arm semihosting enable' \
+        -ex 'monitor reset halt' \
+        -ex 'load' \
+        -ex 'monitor reset init' \
+        -ex '$(GDBCMD)' \
+        -ex 'r' \
+        $(ELF)
+
+clean:
+	@rm -rf *.{bin,elf,map,lst,tgz,zip,hex} obj

examples/stm32-freertos-tcp/README.md

@@ -0,0 +1,3 @@
+# Mongoose with STM32, FreeRTOS kernel and FreeRTOS-TCP network stack
+
+The `-DMG_ARCH=MG_ARCH_FREERTOS_TCP` compilation flag enables FreeRTOS+TCP support.

examples/stm32-freertos-tcp/main.c

@@ -0,0 +1,143 @@
+// Copyright (c) 2021 Cesanta Software Limited
+// All rights reserved
+
+#include "device.h"
+#include "mongoose.h"
+
+static const char *s_debug_level = "4";
+static const char *s_listening_address = "http://0.0.0.0:80";
+
+// Event handler for the listening connection.
+static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
+  if (ev == MG_EV_HTTP_MSG) {
+#if MG_ENABLE_FS
+    struct mg_http_serve_opts opts = {.root_dir = "/"};
+    mg_http_serve_dir(c, ev_data, &opts);
+#else
+    mg_http_reply(c, 200, "", "hello, %s!\n", "world");
+#endif
+  }
+  (void) fn_data;
+  (void) ev_data;
+}
+
+static void server(void *args) {
+  struct mg_mgr mgr;
+  mg_log_set(s_debug_level);
+  mg_mgr_init(&mgr);
+  LOG(LL_INFO, ("Starting Mongoose v%s", MG_VERSION));  // Tell the world
+  mg_http_listen(&mgr, s_listening_address, cb, &mgr);  // Web listener
+  while (args == NULL) mg_mgr_poll(&mgr, 1000);         // Infinite event loop
+  mg_mgr_free(&mgr);                                    // Unreachable
+}
+
+static void blinker(void *args) {
+  uint16_t pin = ((char *) args)[0] == '1' ? LED2 : LED3;
+  int ms = pin == LED2 ? 3750 : 5130;
+  for (;;) {
+    gpio_toggle(pin);
+    vTaskDelay(pdMS_TO_TICKS(ms));
+    LOG(LL_INFO, ("blink %s,  RAM: %u", (char *) args, xPortGetFreeHeapSize()));
+  }
+}
+
+// Start Mongoose server when network is ready
+void vApplicationIPNetworkEventHook(eIPCallbackEvent_t ev) {
+  static bool mongoose_started = false;
+  LOG(LL_INFO, ("FreeRTOS net event %d, up: %d", ev, eNetworkUp));
+  if (ev == eNetworkUp && mongoose_started == false) {
+    xTaskCreate(server, "server", 8192, NULL, configMAX_PRIORITIES - 1, NULL);
+    mongoose_started = true;
+  }
+}
+
+static void init_heap(void) {
+  extern uint32_t _end, _estack;
+  uint8_t *ptr = (uint8_t *) ((((uint32_t) &_end) + 7) & ~7U);
+  uint32_t len = (uint32_t)((char *) &_estack - (char *) &_end);
+  HeapRegion_t regions[] = {{ptr, len}, {NULL, 0}};
+  vPortDefineHeapRegions(regions);
+}
+
+int main(void) {
+  init_hardware();
+  init_heap();
+
+  // Initialise networking task. Can be done before scheduler is started
+  static const uint8_t macaddr[6] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55};
+  static const uint8_t ipaddr[4] = {192, 168, 0, 77};
+  static const uint8_t netmask[4] = {255, 255, 255, 0};
+  static const uint8_t dnsaddr[4] = {8, 8, 8, 8};
+  static const uint8_t gwaddr[4] = {192, 168, 0, 1};
+  FreeRTOS_IPInit(ipaddr, netmask, gwaddr, dnsaddr, macaddr);
+
+  xTaskCreate(blinker, "blinker", 512, "1", configMAX_PRIORITIES - 1, NULL);
+  xTaskCreate(blinker, "blinker", 512, "2", configMAX_PRIORITIES - 1, NULL);
+  vTaskStartScheduler();  // This blocks
+  return 0;               // Unreachable
+}
+
+// Stubs for FreeRTOS-TCP network interface
+uint32_t ulApplicationGetNextSequenceNumber(uint32_t a, uint16_t b, uint32_t c,
+                                            uint16_t d) {
+  return a ^ b ^ c ^ d;
+}
+
+BaseType_t xApplicationGetRandomNumber(uint32_t *p) {
+  *p = 0;
+  return 1;
+}
+
+uint32_t SystemCoreClock = 216000000;
+uint32_t HAL_RCC_GetHCLKFreq(void) {
+  return SystemCoreClock;
+}
+
+uint32_t HAL_GetTick(void) {
+  return configTICK_RATE_HZ;
+}
+
+#include "stm32f7xx_hal_conf.h"
+#include "stm32fxx_hal_eth.h"
+void HAL_ETH_MspInit( ETH_HandleTypeDef* heth ) {
+    GPIO_InitTypeDef GPIO_InitStructure;
+    if (heth->Instance == ETH) {
+        __HAL_RCC_GPIOA_CLK_ENABLE();
+        __HAL_RCC_GPIOC_CLK_ENABLE();
+        __HAL_RCC_GPIOG_CLK_ENABLE();
+
+        GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
+        GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
+        GPIO_InitStructure.Pull = GPIO_NOPULL; 
+        GPIO_InitStructure.Alternate = GPIO_AF11_ETH;
+        GPIO_InitStructure.Pin = GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_7;
+        HAL_GPIO_Init(GPIOA, &GPIO_InitStructure);
+
+        GPIO_InitStructure.Pin = GPIO_PIN_1 | GPIO_PIN_4 | GPIO_PIN_5;
+        HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);
+
+        GPIO_InitStructure.Pin =  GPIO_PIN_2 | GPIO_PIN_11 | GPIO_PIN_13 | GPIO_PIN_14;
+        HAL_GPIO_Init(GPIOG, &GPIO_InitStructure);
+
+        HAL_NVIC_SetPriority(ETH_IRQn, 0x7, 0);
+        HAL_NVIC_EnableIRQ(ETH_IRQn);
+        
+        __HAL_RCC_ETH_CLK_ENABLE();
+        HAL_NVIC_SetPriorityGrouping( NVIC_PRIORITYGROUP_4 );
+    }
+}
+
+int vLoggingPrintf(const char *fmt, ...) {
+  va_list ap;
+  va_start(ap, fmt);
+  char buf[100];
+  int n = vsnprintf(buf, sizeof(buf), fmt, ap);
+  va_end(ap);
+  write(1, buf, n);
+  return n;
+}
+
+void *_sbrk(ptrdiff_t incr) {
+  (void) incr;
+  return NULL;
+}

examples/stm32-freertos-tcp/openocd.cfg

@@ -0,0 +1,4 @@
+source [find interface/stlink-v2-1.cfg]
+transport select hla_swd
+source [find target/stm32f7x.cfg]
+reset_config srst_only srst_nogate

examples/stm32-freertos-tcp/stm32f7/FreeRTOSConfig.h

@@ -0,0 +1,68 @@
+#pragma once
+
+#define configUSE_PREEMPTION 1
+#define configUSE_PORT_OPTIMISED_TASK_SELECTION 1
+#define configCPU_CLOCK_HZ ((unsigned long) 216000000)
+#define configSYSTICK_CLOCK_HZ (configCPU_CLOCK_HZ / 8)
+#define configTICK_RATE_HZ 250
+#define configMAX_PRIORITIES 5
+#define configMINIMAL_STACK_SIZE 512
+#define configMAX_TASK_NAME_LEN 16
+#define configUSE_16_BIT_TICKS 0
+#define configIDLE_SHOULD_YIELD 1
+#define configUSE_TASK_NOTIFICATIONS 1
+#define configUSE_MUTEXES 1
+#define configUSE_RECURSIVE_MUTEXES 1
+#define configUSE_COUNTING_SEMAPHORES 1
+#define configQUEUE_REGISTRY_SIZE 8
+
+#define configSUPPORT_STATIC_ALLOCATION 0
+#define configSUPPORT_DYNAMIC_ALLOCATION 1
+
+#define configUSE_IDLE_HOOK 0
+#define configUSE_TICK_HOOK 0
+#define configCHECK_FOR_STACK_OVERFLOW 0
+#define configUSE_MALLOC_FAILED_HOOK 0
+#define configUSE_DAEMON_TASK_STARTUP_HOOK 0
+
+#define configGENERATE_RUN_TIME_STATS 0
+#define configUSE_TRACE_FACILITY 0
+#define configUSE_STATS_FORMATTING_FUNCTIONS 0
+
+#define configUSE_CO_ROUTINES 0
+#define configMAX_CO_ROUTINE_PRIORITIES 1
+
+#define configUSE_TIMERS 0
+#define configTIMER_TASK_PRIORITY (configMAX_PRIORITIES - 1)
+#define configTIMER_QUEUE_LENGTH 10
+#define configTIMER_TASK_STACK_DEPTH configMINIMAL_STACK_SIZE
+
+#ifdef __NVIC_PRIO_BITS
+#define configPRIO_BITS __NVIC_PRIO_BITS
+#else
+#define configPRIO_BITS 4
+#endif
+#define configLIBRARY_LOWEST_INTERRUPT_PRIORITY 15
+#define configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY 4
+#define configKERNEL_INTERRUPT_PRIORITY \
+  (configLIBRARY_LOWEST_INTERRUPT_PRIORITY << (8 - configPRIO_BITS))
+#define configMAX_SYSCALL_INTERRUPT_PRIORITY \
+  (configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY << (8 - configPRIO_BITS))
+
+#define configINCLUDE_APPLICATION_DEFINED_PRIVILEGED_FUNCTIONS 0
+
+#define INCLUDE_vTaskPrioritySet        1
+#define INCLUDE_uxTaskPriorityGet       1
+#define INCLUDE_vTaskDelete           1
+#define INCLUDE_vTaskCleanUpResources     0
+#define INCLUDE_vTaskSuspend          1
+#define INCLUDE_vTaskDelayUntil         0
+#define INCLUDE_vTaskDelay            1
+#define INCLUDE_xTimerPendFunctionCall      0
+#define INCLUDE_eTaskGetState         1
+#define INCLUDE_pcTaskGetTaskName       1
+#define INCLUDE_xTaskGetSchedulerState      1
+
+#define vPortSVCHandler SVC_Handler
+#define xPortPendSVHandler PendSV_Handler
+#define xPortSysTickHandler SysTick_Handler

examples/stm32-freertos-tcp/stm32f7/FreeRTOSIPConfig.h

@@ -0,0 +1,45 @@
+#pragma once
+#define FREERTOS_IP_CONFIG_H
+
+#ifndef ipconfigHAS_DEBUG_PRINTF
+#define ipconfigHAS_DEBUG_PRINTF 1
+#endif
+#if (ipconfigHAS_DEBUG_PRINTF == 1)
+#define FreeRTOS_debug_printf(X) vLoggingPrintf X
+#endif
+#ifndef ipconfigHAS_PRINTF
+#define ipconfigHAS_PRINTF 1
+#endif
+#if (ipconfigHAS_PRINTF == 1)
+#define FreeRTOS_printf(X) vLoggingPrintf X
+#endif
+
+#define ipconfigBYTE_ORDER pdFREERTOS_LITTLE_ENDIAN
+#define ipconfigREPLY_TO_INCOMING_PINGS       1
+#define ipconfigDRIVER_INCLUDED_TX_IP_CHECKSUM (1)
+#define ipconfigDRIVER_INCLUDED_RX_IP_CHECKSUM (1)
+#define ipconfigZERO_COPY_RX_DRIVER (1)
+#define ipconfigZERO_COPY_TX_DRIVER (1)
+#define ipconfigIP_TASK_PRIORITY 4
+#define niEMAC_HANDLER_TASK_PRIORITY 5
+#define ipconfigIPERF_PRIORITY_IPERF_TASK 6
+#define ipconfigIP_TASK_STACK_SIZE_WORDS (configMINIMAL_STACK_SIZE * 5)
+extern UBaseType_t uxRand();
+#define ipconfigRAND32() uxRand()
+#define ipconfigUSE_NETWORK_EVENT_HOOK 1
+#define ipconfigUSE_DHCP 0
+#define ipconfigDHCP_REGISTER_HOSTNAME 0
+#define ipconfigDHCP_USES_UNICAST 1
+#define ipconfigMAXIMUM_DISCOVER_TX_PERIOD (pdMS_TO_TICKS(30000))
+#define ipconfigARP_CACHE_ENTRIES 6
+#define ipconfigMAX_ARP_RETRANSMISSIONS (5)
+#define ipconfigMAX_ARP_AGE 150
+#define ipconfigINCLUDE_FULL_INET_ADDR 0
+#define ipconfigNUM_NETWORK_BUFFER_DESCRIPTORS 20
+#define ipconfigEVENT_QUEUE_LENGTH (ipconfigNUM_NETWORK_BUFFER_DESCRIPTORS + 5)
+#define ipconfigUDP_TIME_TO_LIVE 128
+#define ipconfigTCP_TIME_TO_LIVE 128
+#define ipconfigUSE_TCP 1
+#define ipconfigSUPPORT_SELECT_FUNCTION 1
+#define ipconfigUSE_TCP_WIN 0
+#define ipconfigNETWORK_MTU 1500

examples/stm32-freertos-tcp/stm32f7/boot.s

@@ -0,0 +1,44 @@
+.cpu cortex-m7
+.fpu softvfp
+.syntax unified
+.thumb
+
+.section .vectortab,"a",%progbits
+                             //       Cortex-M7 interrupt handlers
+.word   _estack              // 0 Stack top address
+.word   _reset               // 1 Reset
+.word   pass                 // 2 NMI
+.word   halt                 // 3 Hard Fault
+.word   halt                 // 4 MM Fault
+.word   halt                 // 5 Bus Fault
+.word   halt                 // 6 Usage Fault
+.word   0                    // 7 RESERVED
+.word   0                    // 8 RESERVED
+.word   0                    // 9 RESERVED
+.word   0                    // 10 RESERVED
+.word   SVC_Handler          // 11 SV call
+.word   halt                 // 12 Debug reserved
+.word   0                    // 13 RESERVED
+.word   PendSV_Handler       // 14 PendSV
+.word   SysTick_Handler      // 15 SysTick
+                             //         98 STM32 handlers
+.word   halt,halt,halt,halt,halt,halt,halt,halt,halt,halt
+.word   halt,halt,halt,halt,halt,halt,halt,halt,halt,halt
+.word   halt,halt,halt,halt,halt,halt,halt,halt,halt,halt
+.word   halt,halt,halt,halt,halt,halt,halt,halt,halt,halt
+.word   halt,halt,halt,halt,halt,halt,halt,halt,halt,halt
+.word   halt,halt,halt,halt,halt,halt,halt,halt,halt,halt
+.word   halt,ETH_IRQHandler,halt,halt,halt,halt,halt,halt,halt,halt
+.word   halt,halt,halt,halt,halt,halt,halt,halt,halt,halt
+.word   halt,halt,halt,halt,halt,halt,halt,halt,halt,halt
+.word   halt,halt,halt,halt,halt,halt,halt,halt
+
+.section .text
+.global _reset
+_reset:
+  ldr sp, =_estack
+  bl main
+  b .
+
+halt:   b .
+pass:   bx lr

examples/stm32-freertos-tcp/stm32f7/core_cmFunc.h

@@ -0,0 +1,87 @@
+/**************************************************************************//**
+ * @file     core_cmFunc.h
+ * @brief    CMSIS Cortex-M Core Function Access Header File
+ * @version  V4.30
+ * @date     20. October 2015
+ ******************************************************************************/
+/* Copyright (c) 2009 - 2015 ARM LIMITED
+
+   All rights reserved.
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are met:
+   - Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+   - Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in the
+     documentation and/or other materials provided with the distribution.
+   - Neither the name of ARM nor the names of its contributors may be used
+     to endorse or promote products derived from this software without
+     specific prior written permission.
+   *
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+   ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
+   LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+   CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+   ---------------------------------------------------------------------------*/
+
+
+#if   defined ( __ICCARM__ )
+ #pragma system_include         /* treat file as system include file for MISRA check */
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+  #pragma clang system_header   /* treat file as system include file */
+#endif
+
+#ifndef __CORE_CMFUNC_H
+#define __CORE_CMFUNC_H
+
+
+/* ###########################  Core Function Access  ########################### */
+/** \ingroup  CMSIS_Core_FunctionInterface
+    \defgroup CMSIS_Core_RegAccFunctions CMSIS Core Register Access Functions
+  @{
+*/
+
+/*------------------ RealView Compiler -----------------*/
+#if   defined ( __CC_ARM )
+  #include "cmsis_armcc.h"
+
+/*------------------ ARM Compiler V6 -------------------*/
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+  #include "cmsis_armcc_V6.h"
+
+/*------------------ GNU Compiler ----------------------*/
+#elif defined ( __GNUC__ )
+  #include "cmsis_gcc.h"
+
+/*------------------ ICC Compiler ----------------------*/
+#elif defined ( __ICCARM__ )
+  #include <cmsis_iar.h>
+
+/*------------------ TI CCS Compiler -------------------*/
+#elif defined ( __TMS470__ )
+  #include <cmsis_ccs.h>
+
+/*------------------ TASKING Compiler ------------------*/
+#elif defined ( __TASKING__ )
+  /*
+   * The CMSIS functions have been implemented as intrinsics in the compiler.
+   * Please use "carm -?i" to get an up to date list of all intrinsics,
+   * Including the CMSIS ones.
+   */
+
+/*------------------ COSMIC Compiler -------------------*/
+#elif defined ( __CSMC__ )
+  #include <cmsis_csm.h>
+
+#endif
+
+/*@} end of CMSIS_Core_RegAccFunctions */
+
+#endif /* __CORE_CMFUNC_H */

examples/stm32-freertos-tcp/stm32f7/core_cmInstr.h

@@ -0,0 +1,87 @@
+/**************************************************************************//**
+ * @file     core_cmInstr.h
+ * @brief    CMSIS Cortex-M Core Instruction Access Header File
+ * @version  V4.30
+ * @date     20. October 2015
+ ******************************************************************************/
+/* Copyright (c) 2009 - 2015 ARM LIMITED
+
+   All rights reserved.
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are met:
+   - Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+   - Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in the
+     documentation and/or other materials provided with the distribution.
+   - Neither the name of ARM nor the names of its contributors may be used
+     to endorse or promote products derived from this software without
+     specific prior written permission.
+   *
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+   ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
+   LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+   CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+   ---------------------------------------------------------------------------*/
+
+
+#if   defined ( __ICCARM__ )
+ #pragma system_include         /* treat file as system include file for MISRA check */
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+  #pragma clang system_header   /* treat file as system include file */
+#endif
+
+#ifndef __CORE_CMINSTR_H
+#define __CORE_CMINSTR_H
+
+
+/* ##########################  Core Instruction Access  ######################### */
+/** \defgroup CMSIS_Core_InstructionInterface CMSIS Core Instruction Interface
+  Access to dedicated instructions
+  @{
+*/
+
+/*------------------ RealView Compiler -----------------*/
+#if   defined ( __CC_ARM )
+  #include "cmsis_armcc.h"
+
+/*------------------ ARM Compiler V6 -------------------*/
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+  #include "cmsis_armcc_V6.h"
+
+/*------------------ GNU Compiler ----------------------*/
+#elif defined ( __GNUC__ )
+  #include "cmsis_gcc.h"
+
+/*------------------ ICC Compiler ----------------------*/
+#elif defined ( __ICCARM__ )
+  #include <cmsis_iar.h>
+
+/*------------------ TI CCS Compiler -------------------*/
+#elif defined ( __TMS470__ )
+  #include <cmsis_ccs.h>
+
+/*------------------ TASKING Compiler ------------------*/
+#elif defined ( __TASKING__ )
+  /*
+   * The CMSIS functions have been implemented as intrinsics in the compiler.
+   * Please use "carm -?i" to get an up to date list of all intrinsics,
+   * Including the CMSIS ones.
+   */
+
+/*------------------ COSMIC Compiler -------------------*/
+#elif defined ( __CSMC__ )
+  #include <cmsis_csm.h>
+
+#endif
+
+/*@}*/ /* end of group CMSIS_Core_InstructionInterface */
+
+#endif /* __CORE_CMINSTR_H */

examples/stm32-freertos-tcp/stm32f7/core_cmSimd.h

@@ -0,0 +1,96 @@
+/**************************************************************************//**
+ * @file     core_cmSimd.h
+ * @brief    CMSIS Cortex-M SIMD Header File
+ * @version  V4.30
+ * @date     20. October 2015
+ ******************************************************************************/
+/* Copyright (c) 2009 - 2015 ARM LIMITED
+
+   All rights reserved.
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are met:
+   - Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+   - Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in the
+     documentation and/or other materials provided with the distribution.
+   - Neither the name of ARM nor the names of its contributors may be used
+     to endorse or promote products derived from this software without
+     specific prior written permission.
+   *
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+   ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
+   LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+   CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+   ---------------------------------------------------------------------------*/
+
+
+#if   defined ( __ICCARM__ )
+ #pragma system_include         /* treat file as system include file for MISRA check */
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+  #pragma clang system_header   /* treat file as system include file */
+#endif
+
+#ifndef __CORE_CMSIMD_H
+#define __CORE_CMSIMD_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+
+/* ###################  Compiler specific Intrinsics  ########################### */
+/** \defgroup CMSIS_SIMD_intrinsics CMSIS SIMD Intrinsics
+  Access to dedicated SIMD instructions
+  @{
+*/
+
+/*------------------ RealView Compiler -----------------*/
+#if   defined ( __CC_ARM )
+  #include "cmsis_armcc.h"
+
+/*------------------ ARM Compiler V6 -------------------*/
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+  #include "cmsis_armcc_V6.h"
+
+/*------------------ GNU Compiler ----------------------*/
+#elif defined ( __GNUC__ )
+  #include "cmsis_gcc.h"
+
+/*------------------ ICC Compiler ----------------------*/
+#elif defined ( __ICCARM__ )
+  #include <cmsis_iar.h>
+
+/*------------------ TI CCS Compiler -------------------*/
+#elif defined ( __TMS470__ )
+  #include <cmsis_ccs.h>
+
+/*------------------ TASKING Compiler ------------------*/
+#elif defined ( __TASKING__ )
+  /*
+   * The CMSIS functions have been implemented as intrinsics in the compiler.
+   * Please use "carm -?i" to get an up to date list of all intrinsics,
+   * Including the CMSIS ones.
+   */
+
+/*------------------ COSMIC Compiler -------------------*/
+#elif defined ( __CSMC__ )
+  #include <cmsis_csm.h>
+
+#endif
+
+/*@} end of group CMSIS_SIMD_intrinsics */
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __CORE_CMSIMD_H */

examples/stm32-freertos-tcp/stm32f7/device.h

@@ -0,0 +1,135 @@
+// Copyright (c) 2018-2021 Cesanta Software Limited
+// All rights reserved
+// https://www.st.com/resource/en/reference_manual/dm00124865-stm32f75xxx-and-stm32f74xxx-advanced-arm-based-32-bit-mcus-stmicroelectronics.pdf
+// Memory map: 2.2.2
+
+#include "stm32f746xx.h"
+//#include "stm32f7xx_hal.h"
+#include "string.h"
+
+#define BIT(x) ((uint32_t) 1 << (x))
+#define PIN(bank, num) ((((bank) - 'A') << 8) | (num))
+
+static inline void spin(uint32_t count) {
+  while (count--) asm("nop");
+}
+static inline GPIO_TypeDef *gpio_bank(uint16_t pin) {
+  return (GPIO_TypeDef *) (0x40020000 + 0x400 * (pin >> 8));
+}
+static inline void gpio_on(uint16_t pin) {
+  gpio_bank(pin)->ODR |= BIT(pin & 255);
+}
+static inline void gpio_off(uint16_t pin) {
+  gpio_bank(pin)->ODR &= ~BIT(pin & 255);
+}
+static inline void gpio_toggle(uint16_t pin) {
+  gpio_bank(pin)->ODR ^= BIT(pin & 255);
+}
+enum { GPIO_IN, GPIO_OUT, GPIO_AF, GPIO_ANALOG };
+enum { GPIO_PP, GPIO_OD };
+enum { GPIO_SPEED_LOW, GPIO_SPEED_MEDIUM, GPIO_SPEED_HIGH, GPIO_SPEED_INSANE };
+enum { GPIO_PULL_NONE, GPIO_PULL_UP, GPIO_PULL_DOWN };
+static inline void gpio_init(uint16_t pin, uint8_t mode, uint8_t type,
+                             uint8_t speed, uint8_t pull, uint8_t af) {
+  GPIO_TypeDef *gpio = gpio_bank(pin);
+  uint8_t n = pin & 255;
+  gpio->MODER &= ~(3 << (n * 2));
+  gpio->MODER |= (mode << (n * 2));
+  gpio->OTYPER &= ~(1 << n);
+  gpio->OTYPER |= (type << n);
+  gpio->OSPEEDR &= ~(3 << (n * 2));
+  gpio->OSPEEDR |= (speed << (n * 2));
+  gpio->PUPDR &= ~(3 << (n * 2));
+  gpio->PUPDR |= (pull << (n * 2));
+  if (n < 8) {
+    gpio->AFR[0] &= 15 << (n * 4);
+    gpio->AFR[0] |= af << (n * 4);
+  } else {
+    gpio->AFR[1] &= 15 << (n * 4);
+    gpio->AFR[1] |= af << (n * 4);
+  }
+}
+
+static inline void init_clock(void) {
+  RCC->CR |= RCC_CR_HSEBYP | RCC_CR_HSEON;  // Start HSE
+  while ((RCC->CR & RCC_CR_HSERDY) == 0) (void) 0;
+
+#define PLL_M 8    // 8MHz HSE down-to 1MHz PLL input
+#define PLL_N 432  // 432 MHz VCO output
+#define PLL_P 2    // 216 MHz PLL output
+#define PLL_Q 9    // 48  MHz (USB)
+  RCC->PLLCFGR = PLL_M | (PLL_N << 6) | (((PLL_P >> 1) - 1) << 16) |
+                 (RCC_PLLCFGR_PLLSRC_HSE) | (PLL_Q << 24);
+  RCC->CR |= RCC_CR_PLLON;  // Enable the main PLL
+  FLASH->ACR = FLASH_ACR_ARTEN | FLASH_ACR_PRFTEN | FLASH_ACR_LATENCY_4WS;
+
+  // Configure AHB/APB prescalers
+  // AHB  Prescaler = /1	-> 216 MHz
+  // APB1 Prescaler = /4  -> 54  MHz
+  // APB2 Prescaler = /2  -> 108 MHz
+  RCC->CFGR |= RCC_CFGR_HPRE_DIV1;
+  RCC->CFGR |= RCC_CFGR_PPRE2_DIV2;
+  RCC->CFGR |= RCC_CFGR_PPRE1_DIV4;
+  while ((RCC->CR & RCC_CR_PLLRDY) == 0) (void) 0;
+
+  RCC->CFGR &= ~RCC_CFGR_SW;     // Select the main PLL
+  RCC->CFGR |= RCC_CFGR_SW_PLL;  // as system clock source
+  while ((RCC->CFGR & RCC_CFGR_SWS) == 0) (void) 0;
+
+  // Ethernet clock
+  RCC->AHB1ENR |= RCC_AHB1ENR_ETHMACEN;
+  RCC->AHB1ENR |= RCC_AHB1ENR_ETHMACTXEN;
+  RCC->AHB1ENR |= RCC_AHB1ENR_ETHMACRXEN;
+}
+
+#define delay(ms) vTaskDelay(pdMS_TO_TICKS(ms))
+
+#define LED1 PIN('B', 0)  // On-board LED pin
+#define LED2 PIN('B', 7)  // On-board LED pin
+#define LED3 PIN('B', 14)  // On-board LED pin
+
+static inline void led_toggle(void) {
+  gpio_toggle(LED2);
+}
+
+static inline void init_ram(void) {
+  extern uint32_t _sbss, _ebss;
+  extern uint32_t _sdata, _edata, _sidata;
+  memset(&_sbss, 0, ((char *) &_ebss - (char *) &_sbss));
+  memcpy(&_sdata, &_sidata, ((char *) &_edata - (char *) &_sdata));
+}
+
+static inline void init_hardware(void) {
+  init_ram();
+  init_clock();
+  RCC->AHB1ENR |= BIT(0) | BIT(1) | BIT(2) | BIT(6);  // Init GPIO banks A,B,C,G
+  gpio_init(LED1, GPIO_OUT, GPIO_PP, GPIO_SPEED_LOW, GPIO_PULL_NONE, 0);
+  gpio_init(LED2, GPIO_OUT, GPIO_PP, GPIO_SPEED_LOW, GPIO_PULL_NONE, 0);
+  gpio_init(LED3, GPIO_OUT, GPIO_PP, GPIO_SPEED_LOW, GPIO_PULL_NONE, 0);
+  gpio_on(LED2);
+#if 0
+  uint16_t a1 = PIN('A', 1), a2 = PIN('A', 2), a7 = PIN('A', 7);
+  gpio_init(a1, GPIO_AF, GPIO_PP, GPIO_SPEED_INSANE, GPIO_PULL_NONE, 11);
+  gpio_init(a2, GPIO_AF, GPIO_PP, GPIO_SPEED_INSANE, GPIO_PULL_NONE, 11);
+  gpio_init(a7, GPIO_AF, GPIO_PP, GPIO_SPEED_INSANE, GPIO_PULL_NONE, 11);
+
+  uint16_t b13 = PIN('B', 13);
+  gpio_init(b13, GPIO_AF, GPIO_PP, GPIO_SPEED_INSANE, GPIO_PULL_NONE, 11);
+
+  uint16_t c1 = PIN('C', 1), c4 = PIN('C', 4), c5 = PIN('C', 5);
+  gpio_init(c1, GPIO_AF, GPIO_PP, GPIO_SPEED_INSANE, GPIO_PULL_NONE, 11);
+  gpio_init(c4, GPIO_AF, GPIO_PP, GPIO_SPEED_INSANE, GPIO_PULL_NONE, 11);
+  gpio_init(c5, GPIO_AF, GPIO_PP, GPIO_SPEED_INSANE, GPIO_PULL_NONE, 11);
+
+  uint16_t g2 = PIN('G', 2), g11 = PIN('G', 11), g13 = PIN('G', 13),
+           g14 = PIN('G', 14);
+  gpio_init(g2, GPIO_AF, GPIO_PP, GPIO_SPEED_INSANE, GPIO_PULL_NONE, 11);
+  gpio_init(g11, GPIO_AF, GPIO_PP, GPIO_SPEED_INSANE, GPIO_PULL_NONE, 11);
+  gpio_init(g13, GPIO_AF, GPIO_PP, GPIO_SPEED_INSANE, GPIO_PULL_NONE, 11);
+  gpio_init(g14, GPIO_AF, GPIO_PP, GPIO_SPEED_INSANE, GPIO_PULL_NONE, 11);
+
+  HAL_Init();
+  HAL_NVIC_SetPriority(ETH_IRQn, 0x7, 0);
+  HAL_NVIC_EnableIRQ(ETH_IRQn);
+#endif
+}

examples/stm32-freertos-tcp/stm32f7/link.ld

@@ -0,0 +1,32 @@
+ENTRY(_reset);
+MEMORY {
+  ram(rwx)  : ORIGIN = 0x20000000, LENGTH = 307k
+  rom(rx)   : ORIGIN = 0x08000000, LENGTH = 1024k
+}
+_estack     = ORIGIN(ram) + LENGTH(ram);    /* boot.s and init_heap() */
+SECTIONS {
+  .vectortab  : { KEEP(*(.vectortab)) } > rom
+  .text       : { *(.text*) } > rom
+  .rodata     : { *(.rodata*) } > rom
+
+  .data : {
+    _sdata = .;   /* for init_ram() */
+    *(.first_data)
+    *(.data SORT(.data.*))
+    _edata = .;  /* for init_ram() */
+  } > ram AT > rom
+  _sidata = LOADADDR(.data);
+
+  .bss : {
+    _sbss = .;              /* for init_ram() */
+    __bss_start__ = _sbss;  /* for libc */
+    *(.bss SORT(.bss.*) COMMON)
+    _ebss = .;              /* for init_ram() */
+    __bss_end__ = _ebss;    /* for libc */
+  } > ram
+
+  . = ALIGN(8);
+  end = .;      /* for syscalls.c */
+  _end = .;     /* for cmsis_gcc.h and init_ram() */
+  __end__ = .;  /* for libc */
+}

examples/stm32-freertos-tcp/stm32f7/portmacro.h

@@ -0,0 +1,248 @@
+/*
+ * FreeRTOS Kernel V10.4.3
+ * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * https://www.FreeRTOS.org
+ * https://github.com/FreeRTOS
+ *
+ * 1 tab == 4 spaces!
+ */
+
+
+#ifndef PORTMACRO_H
+    #define PORTMACRO_H
+
+    #ifdef __cplusplus
+        extern "C" {
+    #endif
+
+/*-----------------------------------------------------------
+ * Port specific definitions.
+ *
+ * The settings in this file configure FreeRTOS correctly for the
+ * given hardware and compiler.
+ *
+ * These settings should not be altered.
+ *-----------------------------------------------------------
+ */
+
+/* Type definitions. */
+    #define portCHAR          char
+    #define portFLOAT         float
+    #define portDOUBLE        double
+    #define portLONG          long
+    #define portSHORT         short
+    #define portSTACK_TYPE    uint32_t
+    #define portBASE_TYPE     long
+
+    typedef portSTACK_TYPE   StackType_t;
+    typedef long             BaseType_t;
+    typedef unsigned long    UBaseType_t;
+
+    #if ( configUSE_16_BIT_TICKS == 1 )
+        typedef uint16_t     TickType_t;
+        #define portMAX_DELAY              ( TickType_t ) 0xffff
+    #else
+        typedef uint32_t     TickType_t;
+        #define portMAX_DELAY              ( TickType_t ) 0xffffffffUL
+
+/* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
+ * not need to be guarded with a critical section. */
+        #define portTICK_TYPE_IS_ATOMIC    1
+    #endif
+/*-----------------------------------------------------------*/
+
+/* Architecture specifics. */
+    #define portSTACK_GROWTH      ( -1 )
+    #define portTICK_PERIOD_MS    ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
+    #define portBYTE_ALIGNMENT    8
+    #define portDONT_DISCARD      __attribute__( ( used ) )
+/*-----------------------------------------------------------*/
+
+/* Scheduler utilities. */
+    #define portYIELD()                                 \
+    {                                                   \
+        /* Set a PendSV to request a context switch. */ \
+        portNVIC_INT_CTRL_REG = portNVIC_PENDSVSET_BIT; \
+                                                        \
+        /* Barriers are normally not required but do ensure the code is completely \
+         * within the specified behaviour for the architecture. */ \
+        __asm volatile ( "dsb" ::: "memory" );                     \
+        __asm volatile ( "isb" );                                  \
+    }
+
+    #define portNVIC_INT_CTRL_REG     ( *( ( volatile uint32_t * ) 0xe000ed04 ) )
+    #define portNVIC_PENDSVSET_BIT    ( 1UL << 28UL )
+    #define portEND_SWITCHING_ISR( xSwitchRequired )    if( xSwitchRequired != pdFALSE ) portYIELD()
+    #define portYIELD_FROM_ISR( x )                     portEND_SWITCHING_ISR( x )
+/*-----------------------------------------------------------*/
+
+/* Critical section management. */
+    extern void vPortEnterCritical( void );
+    extern void vPortExitCritical( void );
+    #define portSET_INTERRUPT_MASK_FROM_ISR()         ulPortRaiseBASEPRI()
+    #define portCLEAR_INTERRUPT_MASK_FROM_ISR( x )    vPortSetBASEPRI( x )
+    #define portDISABLE_INTERRUPTS()                  vPortRaiseBASEPRI()
+    #define portENABLE_INTERRUPTS()                   vPortSetBASEPRI( 0 )
+    #define portENTER_CRITICAL()                      vPortEnterCritical()
+    #define portEXIT_CRITICAL()                       vPortExitCritical()
+
+/*-----------------------------------------------------------*/
+
+/* Task function macros as described on the FreeRTOS.org WEB site.  These are
+ * not necessary for to use this port.  They are defined so the common demo files
+ * (which build with all the ports) will build. */
+    #define portTASK_FUNCTION_PROTO( vFunction, pvParameters )    void vFunction( void * pvParameters )
+    #define portTASK_FUNCTION( vFunction, pvParameters )          void vFunction( void * pvParameters )
+/*-----------------------------------------------------------*/
+
+/* Tickless idle/low power functionality. */
+    #ifndef portSUPPRESS_TICKS_AND_SLEEP
+        extern void vPortSuppressTicksAndSleep( TickType_t xExpectedIdleTime );
+        #define portSUPPRESS_TICKS_AND_SLEEP( xExpectedIdleTime )    vPortSuppressTicksAndSleep( xExpectedIdleTime )
+    #endif
+/*-----------------------------------------------------------*/
+
+/* Architecture specific optimisations. */
+    #ifndef configUSE_PORT_OPTIMISED_TASK_SELECTION
+        #define configUSE_PORT_OPTIMISED_TASK_SELECTION    1
+    #endif
+
+    #if configUSE_PORT_OPTIMISED_TASK_SELECTION == 1
+
+/* Generic helper function. */
+        __attribute__( ( always_inline ) ) static inline uint8_t ucPortCountLeadingZeros( uint32_t ulBitmap )
+        {
+            uint8_t ucReturn;
+
+            __asm volatile ( "clz %0, %1" : "=r" ( ucReturn ) : "r" ( ulBitmap ) : "memory" );
+
+            return ucReturn;
+        }
+
+/* Check the configuration. */
+        #if ( configMAX_PRIORITIES > 32 )
+            #error configUSE_PORT_OPTIMISED_TASK_SELECTION can only be set to 1 when configMAX_PRIORITIES is less than or equal to 32.  It is very rare that a system requires more than 10 to 15 difference priorities as tasks that share a priority will time slice.
+        #endif
+
+/* Store/clear the ready priorities in a bit map. */
+        #define portRECORD_READY_PRIORITY( uxPriority, uxReadyPriorities )    ( uxReadyPriorities ) |= ( 1UL << ( uxPriority ) )
+        #define portRESET_READY_PRIORITY( uxPriority, uxReadyPriorities )     ( uxReadyPriorities ) &= ~( 1UL << ( uxPriority ) )
+
+/*-----------------------------------------------------------*/
+
+        #define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities )    uxTopPriority = ( 31UL - ( uint32_t ) ucPortCountLeadingZeros( ( uxReadyPriorities ) ) )
+
+    #endif /* configUSE_PORT_OPTIMISED_TASK_SELECTION */
+
+/*-----------------------------------------------------------*/
+
+    #ifdef configASSERT
+        void vPortValidateInterruptPriority( void );
+        #define portASSERT_IF_INTERRUPT_PRIORITY_INVALID()    vPortValidateInterruptPriority()
+    #endif
+
+/* portNOP() is not required by this port. */
+    #define portNOP()
+
+    #define portINLINE              __inline
+
+    #ifndef portFORCE_INLINE
+        #define portFORCE_INLINE    inline __attribute__( ( always_inline ) )
+    #endif
+
+    portFORCE_INLINE static BaseType_t xPortIsInsideInterrupt( void )
+    {
+        uint32_t ulCurrentInterrupt;
+        BaseType_t xReturn;
+
+        /* Obtain the number of the currently executing interrupt. */
+        __asm volatile ( "mrs %0, ipsr" : "=r" ( ulCurrentInterrupt )::"memory" );
+
+        if( ulCurrentInterrupt == 0 )
+        {
+            xReturn = pdFALSE;
+        }
+        else
+        {
+            xReturn = pdTRUE;
+        }
+
+        return xReturn;
+    }
+
+/*-----------------------------------------------------------*/
+
+    portFORCE_INLINE static void vPortRaiseBASEPRI( void )
+    {
+        uint32_t ulNewBASEPRI;
+
+        __asm volatile
+        (
+            "	mov %0, %1												\n"\
+            "	cpsid i													\n"\
+            "	msr basepri, %0											\n"\
+            "	isb														\n"\
+            "	dsb														\n"\
+            "	cpsie i													\n"\
+            : "=r" ( ulNewBASEPRI ) : "i" ( configMAX_SYSCALL_INTERRUPT_PRIORITY ) : "memory"
+        );
+    }
+
+/*-----------------------------------------------------------*/
+
+    portFORCE_INLINE static uint32_t ulPortRaiseBASEPRI( void )
+    {
+        uint32_t ulOriginalBASEPRI, ulNewBASEPRI;
+
+        __asm volatile
+        (
+            "	mrs %0, basepri											\n"\
+            "	mov %1, %2												\n"\
+            "	cpsid i													\n"\
+            "	msr basepri, %1											\n"\
+            "	isb														\n"\
+            "	dsb														\n"\
+            "	cpsie i													\n"\
+            : "=r" ( ulOriginalBASEPRI ), "=r" ( ulNewBASEPRI ) : "i" ( configMAX_SYSCALL_INTERRUPT_PRIORITY ) : "memory"
+        );
+
+        /* This return will not be reached but is necessary to prevent compiler
+         * warnings. */
+        return ulOriginalBASEPRI;
+    }
+/*-----------------------------------------------------------*/
+
+    portFORCE_INLINE static void vPortSetBASEPRI( uint32_t ulNewMaskValue )
+    {
+        __asm volatile
+        (
+            "	msr basepri, %0	"::"r" ( ulNewMaskValue ) : "memory"
+        );
+    }
+/*-----------------------------------------------------------*/
+
+    #define portMEMORY_BARRIER()    __asm volatile ( "" ::: "memory" )
+
+    #ifdef __cplusplus
+        }
+    #endif
+
+#endif /* PORTMACRO_H */

examples/stm32-freertos-tcp/stm32f7/stm32f7xx.h

@@ -0,0 +1,220 @@
+/**
+  ******************************************************************************
+  * @file    stm32f7xx.h
+  * @author  MCD Application Team
+  * @brief   CMSIS STM32F7xx Device Peripheral Access Layer Header File.
+  *
+  *          The file is the unique include file that the application programmer
+  *          is using in the C source code, usually in main.c. This file contains:
+  *           - Configuration section that allows to select:
+  *              - The STM32F7xx device used in the target application
+  *              - To use or not the peripheral’s drivers in application code(i.e.
+  *                code will be based on direct access to peripheral’s registers
+  *                rather than drivers API), this option is controlled by
+  *                "#define USE_HAL_DRIVER"
+  *
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under BSD 3-Clause license,
+  * the "License"; You may not use this file except in compliance with the
+  * License. You may obtain a copy of the License at:
+  *                        opensource.org/licenses/BSD-3-Clause
+  *
+  ******************************************************************************
+  */
+
+/** @addtogroup CMSIS
+  * @{
+  */
+
+/** @addtogroup stm32f7xx
+  * @{
+  */
+
+#ifndef __STM32F7xx_H
+#define __STM32F7xx_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif /* __cplusplus */
+
+/** @addtogroup Library_configuration_section
+  * @{
+  */
+
+/**
+  * @brief STM32 Family
+  */
+#if !defined  (STM32F7)
+#define STM32F7
+#endif /* STM32F7 */
+
+/* Uncomment the line below according to the target STM32 device used in your
+   application
+  */
+#if !defined (STM32F756xx) && !defined (STM32F746xx) && !defined (STM32F745xx) && !defined (STM32F765xx) && \
+    !defined (STM32F767xx) && !defined (STM32F769xx) && !defined (STM32F777xx) && !defined (STM32F779xx) && \
+    !defined (STM32F722xx) && !defined (STM32F723xx) && !defined (STM32F732xx) && !defined (STM32F733xx) && \
+    !defined (STM32F730xx) && !defined (STM32F750xx)
+
+  /* #define STM32F756xx */   /*!< STM32F756VG, STM32F756ZG, STM32F756ZG, STM32F756IG, STM32F756BG,
+                                   STM32F756NG Devices */
+  /* #define STM32F746xx */   /*!< STM32F746VE, STM32F746VG, STM32F746ZE, STM32F746ZG, STM32F746IE, STM32F746IG,
+                                   STM32F746BE, STM32F746BG, STM32F746NE, STM32F746NG Devices */
+  /* #define STM32F745xx */   /*!< STM32F745VE, STM32F745VG, STM32F745ZG, STM32F745ZE, STM32F745IE, STM32F745IG Devices */
+  /* #define STM32F765xx */   /*!< STM32F765BI, STM32F765BG, STM32F765NI, STM32F765NG, STM32F765II, STM32F765IG,
+                                   STM32F765ZI, STM32F765ZG, STM32F765VI, STM32F765VG Devices */
+  /* #define STM32F767xx */   /*!< STM32F767BG, STM32F767BI, STM32F767IG, STM32F767II, STM32F767NG, STM32F767NI,
+                                   STM32F767VG, STM32F767VI, STM32F767ZG, STM32F767ZI Devices */
+  /* #define STM32F769xx */   /*!< STM32F769AG, STM32F769AI, STM32F769BG, STM32F769BI, STM32F769IG, STM32F769II,
+                                   STM32F769NG, STM32F769NI, STM32F768AI Devices */
+  /* #define STM32F777xx */   /*!< STM32F777VI, STM32F777ZI, STM32F777II, STM32F777BI, STM32F777NI Devices */
+  /* #define STM32F779xx */   /*!< STM32F779II, STM32F779BI, STM32F779NI, STM32F779AI, STM32F778AI Devices */
+  /* #define STM32F722xx */   /*!< STM32F722IE, STM32F722ZE, STM32F722VE, STM32F722RE, STM32F722IC, STM32F722ZC,
+                                   STM32F722VC, STM32F722RC Devices */
+  /* #define STM32F723xx */   /*!< STM32F723IE, STM32F723ZE, STM32F723VE, STM32F723IC, STM32F723ZC, STM32F723VC Devices */
+  /* #define STM32F732xx */   /*!< STM32F732IE, STM32F732ZE, STM32F732VE, STM32F732RE Devices */
+  /* #define STM32F733xx */   /*!< STM32F733IE, STM32F733ZE, STM32F733VE Devices */
+  /* #define STM32F730xx */   /*!< STM32F730R, STM32F730V, STM32F730Z, STM32F730I Devices */
+  /* #define STM32F750xx */   /*!< STM32F750V, STM32F750Z, STM32F750N Devices */
+#endif
+
+/*  Tip: To avoid modifying this file each time you need to switch between these
+        devices, you can define the device in your toolchain compiler preprocessor.
+  */
+
+#if !defined  (USE_HAL_DRIVER)
+/**
+ * @brief Comment the line below if you will not use the peripherals drivers.
+   In this case, these drivers will not be included and the application code will
+   be based on direct access to peripherals registers
+   */
+  /*#define USE_HAL_DRIVER */
+#endif /* USE_HAL_DRIVER */
+
+/**
+  * @brief CMSIS Device version number V1.2.6
+  */
+#define __STM32F7_CMSIS_VERSION_MAIN   (0x01) /*!< [31:24] main version */
+#define __STM32F7_CMSIS_VERSION_SUB1   (0x02) /*!< [23:16] sub1 version */
+#define __STM32F7_CMSIS_VERSION_SUB2   (0x06) /*!< [15:8]  sub2 version */
+#define __STM32F7_CMSIS_VERSION_RC     (0x00) /*!< [7:0]  release candidate */
+#define __STM32F7_CMSIS_VERSION        ((__STM32F7_CMSIS_VERSION_MAIN << 24)\
+                                       |(__STM32F7_CMSIS_VERSION_SUB1 << 16)\
+                                       |(__STM32F7_CMSIS_VERSION_SUB2 << 8 )\
+                                       |(__STM32F7_CMSIS_VERSION_RC))
+/**
+  * @}
+  */
+
+/** @addtogroup Device_Included
+  * @{
+  */
+#if defined(STM32F722xx)
+  #include "stm32f722xx.h"
+#elif defined(STM32F723xx)
+  #include "stm32f723xx.h"
+#elif defined(STM32F732xx)
+  #include "stm32f732xx.h"
+#elif defined(STM32F733xx)
+  #include "stm32f733xx.h"
+#elif defined(STM32F756xx)
+  #include "stm32f756xx.h"
+#elif defined(STM32F746xx)
+  #include "stm32f746xx.h"
+#elif defined(STM32F745xx)
+  #include "stm32f745xx.h"
+#elif defined(STM32F765xx)
+  #include "stm32f765xx.h"
+#elif defined(STM32F767xx)
+  #include "stm32f767xx.h"
+#elif defined(STM32F769xx)
+  #include "stm32f769xx.h"
+#elif defined(STM32F777xx)
+  #include "stm32f777xx.h"
+#elif defined(STM32F779xx)
+  #include "stm32f779xx.h"
+#elif defined(STM32F730xx)
+  #include "stm32f730xx.h"
+#elif defined(STM32F750xx)
+  #include "stm32f750xx.h"
+#else
+ #error "Please select first the target STM32F7xx device used in your application (in stm32f7xx.h file)"
+#endif
+
+/**
+  * @}
+  */
+
+/** @addtogroup Exported_types
+  * @{
+  */
+typedef enum
+{
+  RESET = 0U,
+  SET = !RESET
+} FlagStatus, ITStatus;
+
+typedef enum
+{
+  DISABLE = 0U,
+  ENABLE = !DISABLE
+} FunctionalState;
+#define IS_FUNCTIONAL_STATE(STATE) (((STATE) == DISABLE) || ((STATE) == ENABLE))
+
+typedef enum
+{
+  SUCCESS = 0U,
+  ERROR = !SUCCESS
+} ErrorStatus;
+
+/**
+  * @}
+  */
+
+/** @addtogroup Exported_macro
+  * @{
+  */
+#define SET_BIT(REG, BIT)     ((REG) |= (BIT))
+
+#define CLEAR_BIT(REG, BIT)   ((REG) &= ~(BIT))
+
+#define READ_BIT(REG, BIT)    ((REG) & (BIT))
+
+#define CLEAR_REG(REG)        ((REG) = (0x0))
+
+#define WRITE_REG(REG, VAL)   ((REG) = (VAL))
+
+#define READ_REG(REG)         ((REG))
+
+#define MODIFY_REG(REG, CLEARMASK, SETMASK)  WRITE_REG((REG), (((READ_REG(REG)) & (~(CLEARMASK))) | (SETMASK)))
+
+#define POSITION_VAL(VAL)     (__CLZ(__RBIT(VAL)))
+
+/**
+  * @}
+  */
+
+#ifdef USE_HAL_DRIVER
+ #include "stm32f7xx_hal.h"
+#endif /* USE_HAL_DRIVER */
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __STM32F7xx_H */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

examples/stm32-freertos-tcp/stm32f7/system_stm32f7xx.h

@@ -0,0 +1,122 @@
+/**
+ ******************************************************************************
+ * @file    system_stm32f7xx.h
+ * @author  MCD Application Team
+ * @brief   CMSIS Cortex-M7 Device System Source File for STM32F7xx devices.
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ *modification, are permitted provided that the following conditions are met:
+ *   1. Redistributions of source code must retain the above copyright notice,
+ *      this list of conditions and the following disclaimer.
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *notice, this list of conditions and the following disclaimer in the
+ *documentation and/or other materials provided with the distribution.
+ *   3. Neither the name of STMicroelectronics nor the names of its contributors
+ *      may be used to endorse or promote products derived from this software
+ *      without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ *LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ */
+
+/** @addtogroup CMSIS
+ * @{
+ */
+
+/** @addtogroup stm32f7xx_system
+ * @{
+ */
+
+/**
+ * @brief Define to prevent recursive inclusion
+ */
+#ifndef __SYSTEM_STM32F7XX_H
+#define __SYSTEM_STM32F7XX_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** @addtogroup STM32F7xx_System_Includes
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F7xx_System_Exported_Variables
+ * @{
+ */
+/* The SystemCoreClock variable is updated in three ways:
+    1) by calling CMSIS function SystemCoreClockUpdate()
+    2) by calling HAL API function HAL_RCC_GetSysClockFreq()
+    3) each time HAL_RCC_ClockConfig() is called to configure the system clock
+   frequency Note: If you use this function to configure the system clock; then
+   there is no need to call the 2 first functions listed above, since
+   SystemCoreClock variable is updated automatically.
+  */
+extern uint32_t SystemCoreClock; /*!< System Clock Frequency (Core Clock) */
+
+extern const uint8_t AHBPrescTable[16]; /*!< AHB prescalers table values */
+extern const uint8_t APBPrescTable[8];  /*!< APB prescalers table values */
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F7xx_System_Exported_Constants
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F7xx_System_Exported_Macros
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F7xx_System_Exported_Functions
+ * @{
+ */
+
+extern void SystemInit(void);
+extern void SystemCoreClockUpdate(void);
+/**
+ * @}
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*__SYSTEM_STM32F7XX_H */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

examples/timers/Makefile

@@ -0,0 +1,10 @@
+PROG ?= example
+
+all: $(PROG)
+	$(DEBUGGER) ./$(PROG) $(ARGS)
+
+$(PROG): main.c
+	$(CC) ../../mongoose.c -I../.. -W -Wall -DMG_ENABLE_LINES=1 -DMG_ENABLE_DIRECTORY_LISTING=1 $(CFLAGS) -o $(PROG) main.c
+
+clean:
+	rm -rf $(PROG) *.o *.dSYM *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb

examples/timers/main.c

@@ -0,0 +1,54 @@
+// Copyright (c) 2020 Cesanta Software Limited
+// All rights reserved
+//
+// Example Websocket server with timers. This is a simple Websocket echo
+// server, which sends a message to all connected clients periodically,
+// using timer API.
+//
+//  1. Start this server, type `make`
+//  2. Open https://www.websocket.org/echo.html in your browser
+//  3. In the "Location" text field, type ws://127.0.0.1:8000/websocket
+//  4. See "hi" messages appearing periodically
+
+#include "mongoose.h"
+
+static const char *s_listen_on = "http://localhost:8000";
+
+// This RESTful server implements the following endpoints:
+static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
+  if (ev == MG_EV_HTTP_MSG) {
+    struct mg_http_message *hm = (struct mg_http_message *) ev_data;
+    mg_ws_upgrade(c, hm, NULL);
+  } else if (ev == MG_EV_WS_MSG) {
+    // Got websocket frame. Received data is wm->data. Echo it back!
+    struct mg_ws_message *wm = (struct mg_ws_message *) ev_data;
+    mg_ws_send(c, wm->data.ptr, wm->data.len, WEBSOCKET_OP_TEXT);
+    mg_iobuf_delete(&c->recv, c->recv.len);
+  }
+  (void) fn_data;
+}
+
+static void timer_fn(void *arg) {
+  struct mg_mgr *mgr = (struct mg_mgr *) arg;
+  struct mg_connection *c;
+  // Broadcast "hi" message to all connected websocket clients.
+  // Traverse over all connections
+  for (c = mgr->conns; c != NULL; c = c->next) {
+    // Send only to accepted websocket connections
+    if (c->is_accepted && c->is_websocket) {
+      mg_ws_send(c, "hi", 2, WEBSOCKET_OP_TEXT);
+    }
+  }
+}
+
+int main(void) {
+  struct mg_mgr mgr;   // Event manager
+  struct mg_timer t1;  // Timer
+  mg_mgr_init(&mgr);   // Initialise event manager
+  mg_timer_init(&t1, 300, MG_TIMER_REPEAT, timer_fn, &mgr);  // Init timer
+  mg_http_listen(&mgr, s_listen_on, fn, NULL);  // Create HTTP listener
+  for (;;) mg_mgr_poll(&mgr, 1000);             // Infinite event loop
+  mg_timer_free(&t1);                           // Free timer resources
+  mg_mgr_free(&mgr);                            // Free manager resources
+  return 0;
+}

examples/video-stream/main.c

@@ -18,7 +18,8 @@ static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
           "Pragma: no-cache\r\nExpires: Thu, 01 Dec 1994 16:00:00 GMT\r\n"
           "Content-Type: multipart/x-mixed-replace; boundary=--foo\r\n\r\n");
     } else {
-      mg_http_serve_dir(c, ev_data, "web_root");
+      struct mg_http_serve_opts opts = {.root_dir = "web_root"};
+      mg_http_serve_dir(c, ev_data, &opts);
     }
   }
 }
@@ -31,11 +32,11 @@ static void broadcast_mjpeg_frame(struct mg_mgr *mgr) {
   size_t nfiles = sizeof(files) / sizeof(files[0]);
   static size_t i;
   const char *path = files[i++ % nfiles];
-  size_t size = mg_file_size(path);
-  char *data = mg_file_read(path);  // Read next file
+  size_t size = 0;
+  char *data = mg_file_read(path, &size);  // Read next file
   struct mg_connection *c;
   for (c = mgr->conns; c != NULL; c = c->next) {
-    if (c->label[0] != 'S') continue;      // Skip non-stream connections
+    if (c->label[0] != 'S') continue;         // Skip non-stream connections
     if (data == NULL || size == 0) continue;  // Skip on file read error
     mg_printf(c,
               "--foo\r\nContent-Type: image/jpeg\r\n"

examples/websocket-client/main.c

@@ -13,7 +13,7 @@ static const char *s_url = "ws://localhost:8000/websocket";
 static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
   if (ev == MG_EV_ERROR) {
     // On error, log error message
-    LOG(LL_ERROR, ("%p %s", c->fd, ev_data));
+    LOG(LL_ERROR, ("%p %s", c->fd, (char *) ev_data));
   } else if (ev == MG_EV_WS_OPEN) {
     // When websocket handshake is successful, send message
     mg_ws_send(c, "hello", 5, WEBSOCKET_OP_TEXT);

examples/websocket-server/main.c

@@ -21,13 +21,14 @@ static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
     if (mg_http_match_uri(hm, "/websocket")) {
       // Upgrade to websocket. From now on, a connection is a full-duplex
       // Websocket connection, which will receive MG_EV_WS_MSG events.
-      mg_ws_upgrade(c, hm);
+      mg_ws_upgrade(c, hm, NULL);
     } else if (mg_http_match_uri(hm, "/rest")) {
       // Serve REST response
-      mg_http_reply(c, 200, "{\"result\": %d}\n", 123);
+      mg_http_reply(c, 200, "", "{\"result\": %d}\n", 123);
     } else {
       // Serve static files
-      mg_http_serve_dir(c, ev_data, s_web_directory);
+      struct mg_http_serve_opts opts = {.root_dir = s_web_directory};
+      mg_http_serve_dir(c, ev_data, &opts);
     }
   } else if (ev == MG_EV_WS_MSG) {
     // Got websocket frame. Received data is wm->data. Echo it back!

src/arch.h

@@ -5,54 +5,20 @@
 #define MG_ARCH_WIN32 2
 #define MG_ARCH_ESP32 3
 #define MG_ARCH_ESP8266 4
-#define MG_ARCH_CC3100 5
-#define MG_ARCH_CC3200 6
-#define MG_ARCH_CC3220 7
-#define MG_ARCH_MSP432 8
-#define MG_ARCH_TM4C129 9
-#define MG_ARCH_MBED 10
-#define MG_ARCH_WINCE 11
-#define MG_ARCH_NXP_LPC 12
-#define MG_ARCH_NXP_KINETIS 13
-#define MG_ARCH_NRF51 14
-#define MG_ARCH_NRF52 15
-#define MG_ARCH_PIC32 16
-#define MG_ARCH_RS14100 17
-#define MG_ARCH_STM32 18
-#define MG_ARCH_FREERTOS 19
+#define MG_ARCH_FREERTOS_TCP 5
+#define MG_ARCH_FREERTOS_LWIP 6
 
 #if !defined(MG_ARCH)
-#if defined(TARGET_IS_MSP432P4XX) || defined(__MSP432P401R__)
-#define MG_ARCH MG_ARCH_MSP432
-#elif defined(cc3200) || defined(TARGET_IS_CC3200)
-#define MG_ARCH MG_ARCH_CC3200
-#elif defined(cc3220) || defined(TARGET_IS_CC3220)
-#define MG_ARCH MG_ARCH_CC3220
-#elif defined(__unix__) || defined(__APPLE__)
+#if defined(__unix__) || defined(__APPLE__)
 #define MG_ARCH MG_ARCH_UNIX
-#elif defined(WINCE)
-#define MG_ARCH MG_ARCH_WINCE
 #elif defined(_WIN32)
 #define MG_ARCH MG_ARCH_WIN32
-#elif defined(__MBED__)
-#define MG_ARCH MG_ARCH_MBED
-#elif defined(__USE_LPCOPEN)
-#define MG_ARCH MG_ARCH_NXP_LPC
-#elif defined(FRDM_K64F) || defined(FREEDOM)
-#define MG_ARCH MG_ARCH_NXP_KINETIS
-#elif defined(PIC32)
-#define MG_ARCH MG_ARCH_PIC32
-#elif defined(ESP_PLATFORM)
-#define MG_ARCH MG_ARCH_ESP32
 #elif defined(ICACHE_FLASH) || defined(ICACHE_RAM_ATTR)
 #define MG_ARCH MG_ARCH_ESP8266
-#elif defined(TARGET_IS_TM4C129_RA0) || defined(TARGET_IS_TM4C129_RA1) || \
-    defined(TARGET_IS_TM4C129_RA2)
-#define MG_ARCH MG_ARCH_TM4C129
-#elif defined(RS14100)
-#define MG_ARCH MG_ARCH_RS14100
-#elif defined(STM32)
-#define MG_ARCH MG_ARCH_STM32
+#elif defined(ESP_PLATFORM)
+#define MG_ARCH MG_ARCH_ESP32
+#elif defined(FREERTOS_IP_H)
+#define MG_ARCH MG_ARCH_FREERTOS_TCP
 #endif
 
 #if !defined(MG_ARCH)
@@ -60,34 +26,6 @@
 #endif
 #endif  // !defined(MG_ARCH)
 
-#define WIN32_LEAN_AND_MEAN
-#define _CRT_SECURE_NO_WARNINGS
-#define _WINSOCK_DEPRECATED_NO_WARNINGS
-
-// Standard C headers
-#include <ctype.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <limits.h>
-#include <stdarg.h>
-#include <stddef.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <time.h>
-
-#if MG_ARCH == MG_ARCH_CUSTOM
-#include <mongoose_custom.h>
-#endif
-
-#include "arch_esp32.h"
-#include "arch_esp8266.h"
-#include "arch_freertos.h"
-#include "arch_unix.h"
-#include "arch_win32.h"
-
 #if !defined(PRINTF_LIKE)
 #if defined(__GNUC__) || defined(__clang__) || defined(__TI_COMPILER_VERSION__)
 #define PRINTF_LIKE(f, a) __attribute__((format(printf, f, a)))
@@ -95,3 +33,14 @@
 #define PRINTF_LIKE(f, a)
 #endif
 #endif
+
+#if MG_ARCH == MG_ARCH_CUSTOM
+#include <mongoose_custom.h>
+#endif
+
+#include "arch_esp32.h"
+#include "arch_esp8266.h"
+#include "arch_freertos_lwip.h"
+#include "arch_freertos_tcp.h"
+#include "arch_unix.h"
+#include "arch_win32.h"