move Zephyr -> tutorials

tutorials/zephyr/device-dashboard/CMakeLists.txt

@@ -0,0 +1,9 @@
+# Copyright (c) 2022 Cesanta Software Limited
+# Mail: support@cesanta.com
+#
+# SPDX-License-Identifier: GPL2.0 or commercial
+
+cmake_minimum_required(VERSION 3.20.0)
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(device_dashboard)
+target_sources(app PRIVATE src/main.c src/mongoose.c src/net.c src/packed_fs.c)

tutorials/zephyr/device-dashboard/Makefile

@@ -0,0 +1,46 @@
+TOP_DIR ?= $(realpath $(CURDIR)/../../..)
+ZEPHYR_DIR ?= $(realpath $(CURDIR)/..)/zephyrproject
+DOCKER ?= docker run --rm \
+          -v $(TOP_DIR):$(TOP_DIR) \
+          -w $(realpath $(CURDIR)) \
+          -e ZEPHYR_BASE=$(ZEPHYR_DIR)/zephyr \
+          $(DOCKER_ARGS) zephyrprojectrtos/ci
+BUILD_ARGS ?= -b nucleo_f746zg
+.PHONY: build
+
+example:
+	true
+
+zephyr:
+	test -d $(ZEPHYR_DIR) || ( mkdir -p $(ZEPHYR_DIR) ; $(DOCKER) west init $(ZEPHYR_DIR))
+	$(DOCKER) sh -c 'cd $(ZEPHYR_DIR) && west update'
+
+build:
+	cp $(TOP_DIR)/mongoose.[ch] src/
+	cp $(TOP_DIR)/examples/device-dashboard/net.[ch] src/
+	cp $(TOP_DIR)/examples/device-dashboard/packed_fs.c src/
+	$(DOCKER) west build $(BUILD_ARGS) -p auto $(realpath $(CURDIR)) $(OVERLAY)
+
+run: DOCKER_ARGS ?= --cap-add=NET_ADMIN --device /dev/net/tun --net=host -it
+run:
+	$(DOCKER) west build -t run
+
+clean:
+	-$(DOCKER) west build -t clean
+
+pristine:
+	-$(DOCKER) west build -t pristine
+
+purge: clean pristine
+	rm -rf $(TOP_DIR)/.west $(ZEPHYR_DIR) build
+
+flash debug: DOCKER_ARGS ?= --privileged -v /dev/bus/usb/:/dev/bus/usb -it
+flash:
+	$(DOCKER) west flash --build-dir $(realpath $(CURDIR))/build
+
+debug:
+	$(DOCKER) west debug --build-dir $(realpath $(CURDIR))/build
+
+test: BUILD_ARGS = -b qemu_x86
+test: OVERLAY = -DOVERLAY_CONFIG=overlay-e1000.conf
+test: build run

tutorials/zephyr/device-dashboard/README.md

@@ -0,0 +1 @@
+../README.md

tutorials/zephyr/device-dashboard/overlay-e1000.conf

@@ -0,0 +1,7 @@
+CONFIG_NET_L2_ETHERNET=y
+CONFIG_NET_QEMU_ETHERNET=y
+CONFIG_ETH_QEMU_IFACE_NAME="tap0"
+
+CONFIG_PCIE=y
+
+#CONFIG_ETHERNET_LOG_LEVEL_DBG=y

tutorials/zephyr/device-dashboard/prj.conf

@@ -0,0 +1,24 @@
+CONFIG_NETWORKING=y
+CONFIG_NET_IPV4=y
+CONFIG_NET_IPV6=y
+CONFIG_NET_TCP=y
+CONFIG_NET_UDP=y
+CONFIG_NET_DHCPV4=y
+CONFIG_NET_SOCKETS=y
+CONFIG_NET_SOCKETS_POLL_MAX=16
+CONFIG_POSIX_API=y
+CONFIG_ZVFS_OPEN_MAX=32
+CONFIG_NET_MAX_CONN=10
+CONFIG_NET_MAX_CONTEXTS=10
+CONFIG_NET_CONFIG_SETTINGS=y
+CONFIG_NET_CONNECTION_MANAGER=y
+CONFIG_NET_LOG=y
+
+CONFIG_LOG=y
+CONFIG_ISR_STACK_SIZE=2048
+CONFIG_MAIN_STACK_SIZE=8192
+CONFIG_IDLE_STACK_SIZE=1024
+
+CONFIG_MINIMAL_LIBC=y
+CONFIG_MINIMAL_LIBC_RAND=y
+CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE=32768

tutorials/zephyr/device-dashboard/src/main.c

@@ -0,0 +1,38 @@
+// Copyright (c) 2022 Cesanta Software Limited
+// All rights reserved
+
+#include "mongoose.h"
+#include "net.h"
+#include <zephyr/net/net_mgmt.h>
+
+// Zephyr: Define a semaphore and network management callback to be able to wait
+// until our IP address is ready. The main function will start and block on this
+// semaphore until this event handler releases it when the network is ready
+K_SEM_DEFINE(run, 0, 1);
+
+static void zeh(struct net_mgmt_event_callback *cb, uint32_t mgmt_event,
+                struct net_if *iface) {
+  if (mgmt_event == NET_EVENT_L4_CONNECTED) k_sem_give(&run);
+}
+
+int main(int argc, char *argv[]) {
+  // Zephyr: Register the network management callback and block on the semaphore
+  struct net_mgmt_event_callback ncb;
+  net_mgmt_init_event_callback(&ncb, zeh, NET_EVENT_L4_CONNECTED);
+  net_mgmt_add_event_callback(&ncb);
+  k_sem_take(&run, K_FOREVER);
+
+  struct mg_mgr mgr;
+
+  mg_log_set(MG_LL_INFO);
+
+  mg_mgr_init(&mgr);
+
+  web_init(&mgr);
+
+  // Start infinite event loop
+  MG_INFO(("Mongoose version : v%s", MG_VERSION));
+  for (;;) mg_mgr_poll(&mgr, 1000);
+  mg_mgr_free(&mgr);
+  return 0;
+}

tutorials/zephyr/device-dashboard/src/mongoose_config.h

@@ -0,0 +1,3 @@
+#define MG_ARCH MG_ARCH_ZEPHYR
+
+#define MG_ENABLE_PACKED_FS 1