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Add nucleo_f429zi
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@@ -0,0 +1,98 @@
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# Mongoose CubeMX integration
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This is a step-by-step guide on how to bring up a production-grade Web UI
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dashboard on STM32 Nucleo-F429ZI development board.
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A pre-configured project .zip is available for download at https://mongoose.ws.
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However for those who want to configure the project from scratch, follow the steps
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below.
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## Generate project code
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- Open the .ioc file in your CubeMX
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- Click on "Project Manager"
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- If you're using CubeIDE, select "CubeIDE" in the toolchain/IDE dropdown
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- If you're using VSCode, select "Cmake" in the toolchain/IDE dropdown
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- If you're using Makefile, select "Makefile" in the toolchain/IDE dropdown
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- Click "Generate Code" button on the top right
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This should generate project code in this directory the directory where .ioc file lives.
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Open this directory in your IDE.
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## Configure .bin generation
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Normally, IDEs generate .elf firmware file, cause it is easier for a debugger
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to load it to a device. However, for the firmware OTA update, the .bin file
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is required. The .bin file is the firmware image that gets copied to the
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beginning of the microcontroller's flash memory and gets executed after the
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system boot.
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So, we need to tell the IDE to generate .bin firmware flash image file.
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- If you're using CubeIDE, select Project / Properties / C/C++ build / Settings
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/ MCU/MPU Post build outputs, enable "Convert to binary file (-O binary)"
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- If you're using VSCode, add a section to the end of the top-level `CMakeLists.txt`:
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```cmake
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add_custom_command(TARGET ${PROJECT_NAME} POST_BUILD
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COMMAND ${CMAKE_OBJCOPY} -O binary
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${PROJECT_NAME}.elf
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${PROJECT_NAME}.bin
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)
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```
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## Call Mongoose from main.c
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Edit `Core/Src/main.c` and update the following snippets - notice the `USER CODE BEGIN` / `USER CODE END` placeholders. At the top of the file:
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```c
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/* USER CODE BEGIN Includes */
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#include "mongoose_glue.h"
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/* USER CODE END Includes */
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```
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Before the `main()` function:
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```c
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/* USER CODE BEGIN 0 */
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int _write(int fd, unsigned char *buf, int len) {
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HAL_UART_Transmit(&huart3, buf, len, HAL_MAX_DELAY);
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return len;
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}
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static void http_ev_handler(struct mg_connection *c, int ev, void *ev_data) {
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if (ev == MG_EV_HTTP_MSG) { // New HTTP request received
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struct mg_http_message *hm = (struct mg_http_message *) ev_data;
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if (mg_match(hm->uri, mg_str("/api/tick"), NULL)) {
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mg_http_reply(c, 200, "", "{%m:%llu}\n", MG_ESC("tick"), HAL_GetTick());
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} else {
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mg_http_reply(c, 200, "", "Hi from Mongoose, tick %llu\n", HAL_GetTick());
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}
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}
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}
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// This blocks forever. Call it at the end of main(), or in a
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// separate RTOS task. Give that task 8k stack space.
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void run_mongoose(void) {
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struct mg_mgr mgr;
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mg_mgr_init(&mgr);
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mg_http_listen(&mgr, "http://0.0.0.0", http_ev_handler, NULL);
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for (;;) {
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mg_mgr_poll(&mgr, 0);
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}
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}
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/* USER CODE END 0 */
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```
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Inside the `main()` function:
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```c
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/* USER CODE BEGIN WHILE */
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run_mongoose(); // <----------------- Add this line
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while (1)
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{
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/* USER CODE END WHILE */
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```
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## Build, flash, test
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Start serial console.
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Use STM32CubeProgrammer to flash the firmware.
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@@ -0,0 +1,165 @@
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#MicroXplorer Configuration settings - do not modify
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CAD.formats=[]
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CAD.pinconfig=Dual
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CAD.provider=
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ETH.IPParameters=MediaInterface
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ETH.MediaInterface=HAL_ETH_RMII_MODE
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File.Version=6
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KeepUserPlacement=false
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Mcu.CPN=STM32F429ZIT6
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Mcu.Family=STM32F4
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Mcu.IP0=ETH
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Mcu.IP1=NVIC
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Mcu.IP2=RCC
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Mcu.IP3=RNG
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Mcu.IP4=SYS
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Mcu.IP5=USART3
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Mcu.IPNb=6
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Mcu.Name=STM32F429ZITx
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Mcu.Package=LQFP144
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Mcu.Pin0=PC1
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Mcu.Pin1=PA1
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Mcu.Pin10=PD9
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Mcu.Pin11=PG11
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Mcu.Pin12=PG13
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Mcu.Pin13=PB7
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Mcu.Pin14=VP_RNG_VS_RNG
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Mcu.Pin15=VP_SYS_VS_Systick
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Mcu.Pin2=PA2
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Mcu.Pin3=PA7
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Mcu.Pin4=PC4
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Mcu.Pin5=PC5
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Mcu.Pin6=PB0
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Mcu.Pin7=PB13
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Mcu.Pin8=PB14
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Mcu.Pin9=PD8
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Mcu.PinsNb=16
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Mcu.ThirdPartyNb=0
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Mcu.UserConstants=
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Mcu.UserName=STM32F429ZITx
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MxCube.Version=6.11.1
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MxDb.Version=DB.6.0.111
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NVIC.BusFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
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NVIC.DebugMonitor_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
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NVIC.ETH_IRQn=true\:0\:0\:false\:false\:false\:true\:false\:true
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NVIC.ForceEnableDMAVector=true
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NVIC.HardFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
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NVIC.MemoryManagement_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
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NVIC.NonMaskableInt_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
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NVIC.PendSV_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
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NVIC.PriorityGroup=NVIC_PRIORITYGROUP_4
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NVIC.SVCall_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
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NVIC.SysTick_IRQn=true\:15\:0\:false\:false\:true\:false\:true\:false
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NVIC.UsageFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
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PA1.Mode=RMII
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PA1.Signal=ETH_REF_CLK
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PA2.Mode=RMII
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PA2.Signal=ETH_MDIO
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PA7.Mode=RMII
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PA7.Signal=ETH_CRS_DV
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PB0.Locked=true
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PB0.Signal=GPIO_Output
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PB13.Mode=RMII
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PB13.Signal=ETH_TXD1
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PB14.Locked=true
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PB14.Signal=GPIO_Output
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PB7.Locked=true
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PB7.Signal=GPIO_Output
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PC1.Mode=RMII
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PC1.Signal=ETH_MDC
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PC4.Mode=RMII
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PC4.Signal=ETH_RXD0
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PC5.Mode=RMII
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PC5.Signal=ETH_RXD1
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PD8.Locked=true
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PD8.Mode=Asynchronous
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PD8.Signal=USART3_TX
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PD9.Locked=true
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PD9.Mode=Asynchronous
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PD9.Signal=USART3_RX
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PG11.Locked=true
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PG11.Mode=RMII
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PG11.Signal=ETH_TX_EN
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PG13.Locked=true
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PG13.Mode=RMII
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PG13.Signal=ETH_TXD0
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PinOutPanel.RotationAngle=0
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ProjectManager.AskForMigrate=true
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ProjectManager.BackupPrevious=false
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ProjectManager.CompilerOptimize=6
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ProjectManager.ComputerToolchain=false
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ProjectManager.CoupleFile=false
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ProjectManager.CustomerFirmwarePackage=
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ProjectManager.DefaultFWLocation=true
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ProjectManager.DeletePrevious=true
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ProjectManager.DeviceId=STM32F429ZITx
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ProjectManager.FirmwarePackage=STM32Cube FW_F4 V1.28.0
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ProjectManager.FreePins=false
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ProjectManager.HalAssertFull=false
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ProjectManager.HeapSize=0x200
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ProjectManager.KeepUserCode=true
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ProjectManager.LastFirmware=true
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ProjectManager.LibraryCopy=1
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ProjectManager.MainLocation=Core/Src
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ProjectManager.NoMain=false
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ProjectManager.PreviousToolchain=
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ProjectManager.ProjectBuild=false
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ProjectManager.ProjectFileName=f429zi.ioc
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ProjectManager.ProjectName=f429zi
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ProjectManager.ProjectStructure=
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ProjectManager.RegisterCallBack=RNG
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ProjectManager.StackSize=0x400
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ProjectManager.TargetToolchain=STM32CubeIDE
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ProjectManager.ToolChainLocation=
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ProjectManager.UAScriptAfterPath=
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ProjectManager.UAScriptBeforePath=
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ProjectManager.UnderRoot=true
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ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false,2-MX_GPIO_Init-GPIO-false-HAL-true,3-MX_ETH_Init-ETH-false-HAL-true,4-MX_USART3_UART_Init-USART3-false-HAL-true,5-MX_RNG_Init-RNG-false-HAL-true
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RCC.48MHZClocksFreq_Value=45000000
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RCC.AHBFreq_Value=180000000
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RCC.APB1CLKDivider=RCC_HCLK_DIV4
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RCC.APB1Freq_Value=45000000
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RCC.APB1TimFreq_Value=90000000
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RCC.APB2CLKDivider=RCC_HCLK_DIV2
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RCC.APB2Freq_Value=90000000
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RCC.APB2TimFreq_Value=180000000
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RCC.CortexFreq_Value=180000000
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RCC.EthernetFreq_Value=180000000
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RCC.FCLKCortexFreq_Value=180000000
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RCC.FamilyName=M
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RCC.HCLKFreq_Value=180000000
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RCC.HSE_VALUE=25000000
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RCC.HSI_VALUE=16000000
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RCC.I2SClocksFreq_Value=192000000
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RCC.IPParameters=48MHZClocksFreq_Value,AHBFreq_Value,APB1CLKDivider,APB1Freq_Value,APB1TimFreq_Value,APB2CLKDivider,APB2Freq_Value,APB2TimFreq_Value,CortexFreq_Value,EthernetFreq_Value,FCLKCortexFreq_Value,FamilyName,HCLKFreq_Value,HSE_VALUE,HSI_VALUE,I2SClocksFreq_Value,LCDTFTFreq_Value,LSE_VALUE,LSI_VALUE,MCO2PinFreq_Value,PLLCLKFreq_Value,PLLM,PLLN,PLLQ,PLLQCLKFreq_Value,RTCFreq_Value,RTCHSEDivFreq_Value,SAI_AClocksFreq_Value,SAI_BClocksFreq_Value,SYSCLKFreq_VALUE,SYSCLKSource,VCOI2SOutputFreq_Value,VCOInputFreq_Value,VCOOutputFreq_Value,VCOSAIOutputFreq_Value,VCOSAIOutputFreq_ValueQ,VCOSAIOutputFreq_ValueR,VcooutputI2S,VcooutputI2SQ
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RCC.LCDTFTFreq_Value=24500000
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RCC.LSE_VALUE=32768
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RCC.LSI_VALUE=32000
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RCC.MCO2PinFreq_Value=180000000
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RCC.PLLCLKFreq_Value=180000000
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RCC.PLLM=8
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RCC.PLLN=180
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RCC.PLLQ=8
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RCC.PLLQCLKFreq_Value=45000000
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RCC.RTCFreq_Value=32000
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RCC.RTCHSEDivFreq_Value=12500000
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RCC.SAI_AClocksFreq_Value=24500000
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RCC.SAI_BClocksFreq_Value=24500000
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RCC.SYSCLKFreq_VALUE=180000000
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RCC.SYSCLKSource=RCC_SYSCLKSOURCE_PLLCLK
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RCC.VCOI2SOutputFreq_Value=384000000
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RCC.VCOInputFreq_Value=2000000
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RCC.VCOOutputFreq_Value=360000000
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RCC.VCOSAIOutputFreq_Value=98000000
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RCC.VCOSAIOutputFreq_ValueQ=24500000
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RCC.VCOSAIOutputFreq_ValueR=49000000
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RCC.VcooutputI2S=192000000
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RCC.VcooutputI2SQ=192000000
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USART3.IPParameters=VirtualMode
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USART3.VirtualMode=VM_ASYNC
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VP_RNG_VS_RNG.Mode=RNG_Activate
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VP_RNG_VS_RNG.Signal=RNG_VS_RNG
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VP_SYS_VS_Systick.Mode=SysTick
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VP_SYS_VS_Systick.Signal=SYS_VS_Systick
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board=custom
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isbadioc=false
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@@ -0,0 +1,38 @@
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# Copyright (c) 2026 Cesanta Software Limited
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# Environment setup: https://mongoose.ws/docs/getting-started/build-environment/
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CFLAGS = -W -Wall -Wextra -Wundef -Wshadow -Wdouble-promotion
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||||
CFLAGS += -Wformat-truncation -fno-common -Wconversion -Wno-sign-conversion
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CFLAGS += -g3 -Os -ffunction-sections -fdata-sections
|
||||
CFLAGS += -I. -Icmsis_core/CMSIS/Core/Include -Icmsis_f4/Include
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||||
CFLAGS += -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 $(CFLAGS_EXTRA)
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LDFLAGS ?= -Tlink.ld -nostdlib -nostartfiles --specs nosys.specs -lc -lgcc -Wl,--gc-sections -Wl,-Map=$@.map
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SOURCES = main.c hal.c
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||||
SOURCES += cmsis_f4/Source/Templates/gcc/startup_stm32f429xx.s
|
||||
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||||
TOP = ../../../..
|
||||
CFLAGS += -I$(TOP)
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||||
SOURCES += $(TOP)/mongoose.c
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||||
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||||
all: firmware.bin
|
||||
|
||||
firmware.elf: cmsis_core cmsis_f4 hal.h link.ld Makefile $(SOURCES)
|
||||
arm-none-eabi-gcc $(SOURCES) $(CFLAGS) $(CFLAGS_EXTRA) $(LDFLAGS) -o $@
|
||||
|
||||
firmware.bin: firmware.elf
|
||||
arm-none-eabi-objcopy -O binary $< $@
|
||||
@echo
|
||||
@echo "To flash, run 'make flash', or use STM32CubeProgrammer"
|
||||
|
||||
flash: firmware.bin
|
||||
STM32_Programmer_CLI -c port=swd -e all -w firmware.elf -hardRst
|
||||
|
||||
cmsis_core:
|
||||
git clone -q -c advice.detachedHead=false --depth 1 -b 5.9.0 https://github.com/ARM-software/CMSIS_5 $@
|
||||
|
||||
cmsis_f4:
|
||||
git clone -q -c advice.detachedHead=false --depth 1 -b v2.6.9 https://github.com/STMicroelectronics/cmsis_device_f4 $@
|
||||
|
||||
clean:
|
||||
rm -rf firmware.*
|
||||
@@ -0,0 +1,125 @@
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// Copyright (c) 2026 Cesanta Software Limited
|
||||
// All rights reserved
|
||||
|
||||
#include "hal.h"
|
||||
|
||||
bool hal_timer_expired(volatile uint64_t *t, uint64_t period, uint64_t now) {
|
||||
uint64_t diff = now - *t; // Wrap-safe elapsed time since last expiry
|
||||
if (period == 0) return false; // Avoid division by zero
|
||||
if (diff < period) return false; // Period has not elapsed yet
|
||||
*t += (diff / period) * period; // Preserve cadence, skip missed periods
|
||||
return true;
|
||||
}
|
||||
|
||||
static volatile uint64_t s_ticks; // Milliseconds since boot
|
||||
void SysTick_Handler(void) { // SyStick IRQ handler, triggered every 1ms
|
||||
s_ticks++;
|
||||
}
|
||||
|
||||
uint64_t hal_get_tick(void) {
|
||||
return s_ticks;
|
||||
};
|
||||
|
||||
uint32_t SystemCoreClock = 160000000;
|
||||
void SystemInit(void) { // Called automatically by startup code
|
||||
hal_system_init(); // Enable FPU
|
||||
hal_clock_init();
|
||||
SysTick_Config(SystemCoreClock / 1000); // Sys tick every 1ms
|
||||
}
|
||||
|
||||
void ExitRun0Mode(void) {
|
||||
}
|
||||
|
||||
struct stat;
|
||||
__attribute__((weak)) int _fstat(int fd, struct stat *st) {
|
||||
(void) fd, (void) st;
|
||||
return -1;
|
||||
}
|
||||
|
||||
extern unsigned char _end[]; // End of data section, start of heap. See link.ld
|
||||
static unsigned char *s_current_heap_end = _end;
|
||||
|
||||
size_t hal_ram_used(void) {
|
||||
return (size_t) (s_current_heap_end - _end);
|
||||
}
|
||||
|
||||
size_t hal_ram_free(void) {
|
||||
unsigned char endofstack;
|
||||
return (size_t) (&endofstack - s_current_heap_end);
|
||||
}
|
||||
|
||||
void *_sbrk(int incr) {
|
||||
unsigned char *prev_heap;
|
||||
unsigned char *heap_end = (unsigned char *) ((size_t) &heap_end - 256);
|
||||
prev_heap = s_current_heap_end;
|
||||
// Check how much space we got from the heap end to the stack end
|
||||
if (s_current_heap_end + incr > heap_end) return (void *) -1;
|
||||
s_current_heap_end += incr;
|
||||
return prev_heap;
|
||||
}
|
||||
|
||||
__attribute__((weak)) int _open(const char *path) {
|
||||
(void) path;
|
||||
return -1;
|
||||
}
|
||||
|
||||
__attribute__((weak)) int _close(int fd) {
|
||||
(void) fd;
|
||||
return -1;
|
||||
}
|
||||
|
||||
__attribute__((weak)) int _isatty(int fd) {
|
||||
(void) fd;
|
||||
return 1;
|
||||
}
|
||||
|
||||
__attribute__((weak)) int _lseek(int fd, int ptr, int dir) {
|
||||
(void) fd, (void) ptr, (void) dir;
|
||||
return 0;
|
||||
}
|
||||
|
||||
__attribute__((weak)) void _exit(int status) {
|
||||
(void) status;
|
||||
for (;;) asm volatile("BKPT #0");
|
||||
}
|
||||
|
||||
__attribute__((weak)) void _kill(int pid, int sig) {
|
||||
(void) pid, (void) sig;
|
||||
}
|
||||
|
||||
__attribute__((weak)) int _getpid(void) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
__attribute__((weak)) int _write(int fd, char *ptr, int len) {
|
||||
(void) fd, (void) ptr, (void) len;
|
||||
return -1;
|
||||
}
|
||||
|
||||
__attribute__((weak)) int _read(int fd, char *ptr, int len) {
|
||||
(void) fd, (void) ptr, (void) len;
|
||||
return -1;
|
||||
}
|
||||
|
||||
__attribute__((weak)) int _link(const char *a, const char *b) {
|
||||
(void) a, (void) b;
|
||||
return -1;
|
||||
}
|
||||
|
||||
__attribute__((weak)) int _unlink(const char *a) {
|
||||
(void) a;
|
||||
return -1;
|
||||
}
|
||||
|
||||
__attribute__((weak)) int _stat(const char *path, struct stat *st) {
|
||||
(void) path, (void) st;
|
||||
return -1;
|
||||
}
|
||||
|
||||
__attribute__((weak)) int mkdir(const char *path, int mode) {
|
||||
(void) path, (void) mode;
|
||||
return -1;
|
||||
}
|
||||
|
||||
__attribute__((weak)) void _init(void) {
|
||||
}
|
||||
@@ -0,0 +1,182 @@
|
||||
// Copyright (c) 2026 Cesanta Software Limited
|
||||
// https://www.st.com/resource/en/reference_manual/dm00031020-stm32f405-415-stm32f407-417-stm32f427-437-and-stm32f429-439-advanced-arm-based-32-bit-mcus-stmicroelectronics.pdf
|
||||
// https://www.st.com/resource/en/datasheet/stm32f429zi.pdf
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <stm32f429xx.h>
|
||||
|
||||
#include <stdbool.h>
|
||||
#include <stdint.h>
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
|
||||
|
||||
extern bool hal_timer_expired(volatile uint64_t *t, uint64_t prd, uint64_t now);
|
||||
extern uint64_t hal_get_tick(void);
|
||||
extern size_t hal_ram_free(void);
|
||||
extern size_t hal_ram_used(void);
|
||||
extern uint32_t SystemCoreClock;
|
||||
|
||||
#define HAL_ETH_PINS \
|
||||
PIN('A', 1), /* ETH_REF_CLK */ \
|
||||
PIN('A', 2), /* ETH_MDIO */ \
|
||||
PIN('A', 7), /* ETH_CRS_DV */ \
|
||||
PIN('B', 13), /* ETH_TXD1 */ \
|
||||
PIN('C', 1), /* ETH_MDC */ \
|
||||
PIN('C', 4), /* ETH_RXD0 */ \
|
||||
PIN('C', 5), /* ETH_RXD1 */ \
|
||||
PIN('G', 11), /* ETH_TX_EN */ \
|
||||
PIN('G', 13) /* ETH_TXD0 */
|
||||
|
||||
#define BIT(x) (1UL << (x))
|
||||
#define CLRSET(reg, clear, set) ((reg) = ((reg) & ~(clear)) | (set))
|
||||
#define PIN(bank, num) ((((bank) - 'A') << 8) | (num))
|
||||
#define PINNO(pin) (pin & 255)
|
||||
#define PINBANK(pin) (pin >> 8)
|
||||
|
||||
void hal_init(void);
|
||||
size_t hal_ram_free(void);
|
||||
size_t hal_ram_used(void);
|
||||
|
||||
// 6.3.3: APB1 clock <= 45MHz; APB2 clock <= 90MHz
|
||||
// 3.5.1, Table 11: configure flash latency (WS) in accordance to clock freq
|
||||
// 33.4: The AHB clock must be at least 25 MHz when Ethernet is used
|
||||
enum { HAL_APB1_PRE = 5 /* AHB clock / 4 */, HAL_APB2_PRE = 4 /* AHB clock / 2 */ };
|
||||
enum { PLL_HSI = 16, PLL_M = 8, PLL_N = 180, PLL_P = 2 }; // Run at 180 Mhz
|
||||
#define FLASH_LATENCY 5
|
||||
#define SYS_FREQUENCY ((PLL_HSI * PLL_N / PLL_M / PLL_P) * 1000000)
|
||||
#define APB2_FREQUENCY (SYS_FREQUENCY / (BIT(HAL_APB2_PRE - 3)))
|
||||
#define APB1_FREQUENCY (SYS_FREQUENCY / (BIT(HAL_APB1_PRE - 3)))
|
||||
|
||||
static inline void spin(volatile uint32_t count) {
|
||||
while (count--) (void) 0;
|
||||
}
|
||||
|
||||
enum { HAL_GPIO_MODE_INPUT, HAL_GPIO_MODE_OUTPUT, HAL_GPIO_MODE_AF, HAL_GPIO_MODE_ANALOG };
|
||||
enum { HAL_GPIO_OTYPE_PUSH_PULL, HAL_GPIO_OTYPE_OPEN_DRAIN };
|
||||
enum { HAL_GPIO_SPEED_LOW, HAL_GPIO_SPEED_MEDIUM, HAL_GPIO_SPEED_HIGH, HAL_GPIO_SPEED_INSANE };
|
||||
enum { HAL_GPIO_PULL_NONE, HAL_GPIO_PULL_UP, HAL_GPIO_PULL_DOWN };
|
||||
#define HAL_GPIO(N) ((GPIO_TypeDef *) (0x40020000 + 0x400 * (N)))
|
||||
|
||||
static GPIO_TypeDef *hal_gpio_bank(uint16_t pin) { return HAL_GPIO(PINBANK(pin)); }
|
||||
static inline void hal_gpio_toggle(uint16_t pin) {
|
||||
GPIO_TypeDef *gpio = hal_gpio_bank(pin);
|
||||
uint32_t mask = BIT(PINNO(pin));
|
||||
gpio->BSRR = mask << (gpio->ODR & mask ? 16 : 0);
|
||||
}
|
||||
static inline int hal_gpio_read(uint16_t pin) {
|
||||
return hal_gpio_bank(pin)->IDR & BIT(PINNO(pin)) ? 1 : 0;
|
||||
}
|
||||
static inline void hal_gpio_write(uint16_t pin, bool val) {
|
||||
GPIO_TypeDef *gpio = hal_gpio_bank(pin);
|
||||
gpio->BSRR = BIT(PINNO(pin)) << (val ? 0 : 16);
|
||||
}
|
||||
static inline void hal_gpio_init(uint16_t pin, uint8_t mode, uint8_t type,
|
||||
uint8_t speed, uint8_t pull, uint8_t af) {
|
||||
GPIO_TypeDef *gpio = hal_gpio_bank(pin);
|
||||
uint8_t n = (uint8_t) (PINNO(pin));
|
||||
RCC->AHB1ENR |= BIT(PINBANK(pin)); // Enable GPIO clock
|
||||
CLRSET(gpio->OTYPER, 1UL << n, ((uint32_t) type) << n);
|
||||
CLRSET(gpio->OSPEEDR, 3UL << (n * 2), ((uint32_t) speed) << (n * 2));
|
||||
CLRSET(gpio->PUPDR, 3UL << (n * 2), ((uint32_t) pull) << (n * 2));
|
||||
CLRSET(gpio->AFR[n >> 3], 15UL << ((n & 7) * 4),
|
||||
((uint32_t) af) << ((n & 7) * 4));
|
||||
CLRSET(gpio->MODER, 3UL << (n * 2), ((uint32_t) mode) << (n * 2));
|
||||
}
|
||||
static inline void hal_gpio_input(uint16_t pin) {
|
||||
hal_gpio_init(pin, HAL_GPIO_MODE_INPUT, HAL_GPIO_OTYPE_PUSH_PULL, HAL_GPIO_SPEED_HIGH,
|
||||
HAL_GPIO_PULL_NONE, 0);
|
||||
}
|
||||
static inline void hal_gpio_output(uint16_t pin) {
|
||||
hal_gpio_init(pin, HAL_GPIO_MODE_OUTPUT, HAL_GPIO_OTYPE_PUSH_PULL, HAL_GPIO_SPEED_HIGH,
|
||||
HAL_GPIO_PULL_NONE, 0);
|
||||
}
|
||||
|
||||
static inline void hal_irq_exti_attach(uint16_t pin) {
|
||||
uint8_t bank = (uint8_t) (PINBANK(pin)), n = (uint8_t) (PINNO(pin));
|
||||
SYSCFG->EXTICR[n / 4] &= ~(15UL << ((n % 4) * 4));
|
||||
SYSCFG->EXTICR[n / 4] |= (uint32_t) (bank << ((n % 4) * 4));
|
||||
EXTI->IMR |= BIT(n);
|
||||
EXTI->RTSR |= BIT(n);
|
||||
EXTI->FTSR |= BIT(n);
|
||||
int irqvec = n < 5 ? 6 + n : n < 10 ? 23 : 40; // IRQ vector index, 10.1.2
|
||||
NVIC_SetPriority(irqvec, 3);
|
||||
NVIC_EnableIRQ(irqvec);
|
||||
}
|
||||
|
||||
static inline void hal_uart_init(USART_TypeDef *uart, unsigned long baud) {
|
||||
uint8_t af = 7; // Alternate function
|
||||
uint16_t rx = 0, tx = 0; // pins
|
||||
uint32_t freq = 0; // Bus frequency. UART1 is on APB2, rest on APB1
|
||||
|
||||
if (uart == USART1) freq = APB2_FREQUENCY, RCC->APB2ENR |= BIT(4);
|
||||
if (uart == USART2) freq = APB1_FREQUENCY, RCC->APB1ENR |= BIT(17);
|
||||
if (uart == USART3) freq = APB1_FREQUENCY, RCC->APB1ENR |= BIT(18);
|
||||
|
||||
if (uart == USART1) tx = PIN('A', 9), rx = PIN('A', 10);
|
||||
if (uart == USART2) tx = PIN('A', 2), rx = PIN('A', 3);
|
||||
if (uart == USART3) tx = PIN('D', 8), rx = PIN('D', 9);
|
||||
|
||||
hal_gpio_init(tx, HAL_GPIO_MODE_AF, HAL_GPIO_OTYPE_PUSH_PULL, HAL_GPIO_SPEED_HIGH, 0, af);
|
||||
hal_gpio_init(rx, HAL_GPIO_MODE_AF, HAL_GPIO_OTYPE_PUSH_PULL, HAL_GPIO_SPEED_HIGH, 0, af);
|
||||
uart->CR1 = 0; // Disable this UART
|
||||
uart->BRR = freq / baud; // Set baud rate
|
||||
uart->CR1 |= BIT(13) | BIT(2) | BIT(3); // Set UE, RE, TE
|
||||
}
|
||||
static inline void hal_uart_write_byte(USART_TypeDef *uart, uint8_t byte) {
|
||||
uart->DR = byte;
|
||||
while ((uart->SR & BIT(7)) == 0) spin(1);
|
||||
}
|
||||
static inline void hal_uart_write_buf(USART_TypeDef *uart, char *buf, size_t len) {
|
||||
while (len-- > 0) hal_uart_write_byte(uart, *(uint8_t *) buf++);
|
||||
}
|
||||
static inline int hal_uart_read_ready(USART_TypeDef *uart) {
|
||||
return uart->SR & BIT(5); // If RXNE bit is set, data is ready
|
||||
}
|
||||
static inline uint8_t hal_uart_read_byte(USART_TypeDef *uart) {
|
||||
return (uint8_t) (uart->DR & 255);
|
||||
}
|
||||
|
||||
static inline void hal_rng_init(void) {
|
||||
RCC->AHB2ENR |= RCC_AHB2ENR_RNGEN;
|
||||
RNG->CR |= RNG_CR_RNGEN;
|
||||
}
|
||||
static inline uint32_t hal_rng_read(void) {
|
||||
while ((RNG->SR & RNG_SR_DRDY) == 0) (void) 0;
|
||||
return RNG->DR;
|
||||
}
|
||||
|
||||
// Hw pull-ups on PHY RXD0,1,DV to enable autonegotiation
|
||||
static inline void hal_ethernet_init(void) {
|
||||
// Initialise Ethernet. Enable MAC GPIO pins, see
|
||||
// https://www.farnell.com/datasheets/2014265.pdf section 6.10
|
||||
uint16_t pins[] = {HAL_ETH_PINS};
|
||||
for (size_t i = 0; i < sizeof(pins) / sizeof(pins[0]); i++) {
|
||||
hal_gpio_init(pins[i], HAL_GPIO_MODE_AF, HAL_GPIO_OTYPE_PUSH_PULL, HAL_GPIO_SPEED_INSANE,
|
||||
HAL_GPIO_PULL_NONE, 11); // 11 is the Ethernet function
|
||||
}
|
||||
NVIC_EnableIRQ(ETH_IRQn); // Setup Ethernet IRQ handler
|
||||
SYSCFG->PMC |= SYSCFG_PMC_MII_RMII_SEL; // Use RMII. Goes first!
|
||||
RCC->AHB1ENR |=
|
||||
RCC_AHB1ENR_ETHMACEN | RCC_AHB1ENR_ETHMACTXEN | RCC_AHB1ENR_ETHMACRXEN;
|
||||
}
|
||||
|
||||
static inline void hal_clock_init(void) {
|
||||
FLASH->ACR |= FLASH_LATENCY | BIT(8) | BIT(9); // Flash latency, prefetch
|
||||
RCC->PLLCFGR &= ~((BIT(17) - 1)); // Clear PLL multipliers
|
||||
RCC->PLLCFGR |= (((PLL_P - 2) / 2) & 3) << 16; // Set PLL_P
|
||||
RCC->PLLCFGR |= PLL_M | (PLL_N << 6); // Set PLL_M and PLL_N
|
||||
RCC->CR |= BIT(24); // Enable PLL
|
||||
while ((RCC->CR & BIT(25)) == 0) (void) 0; // Wait until done
|
||||
RCC->CFGR = (HAL_APB1_PRE << 10) | (HAL_APB2_PRE << 13); // Set prescalers
|
||||
RCC->CFGR |= 2; // Set clock source to PLL
|
||||
while ((RCC->CFGR & 12) == 0) (void) 0; // Wait until done
|
||||
RCC->APB2ENR |= RCC_APB2ENR_SYSCFGEN; // Enable SYSCFG
|
||||
}
|
||||
|
||||
static inline void hal_system_init(void) {
|
||||
SCB->CPACR |= ((3UL << 10 * 2) | (3UL << 11 * 2)); // Enable FPU
|
||||
__DSB();
|
||||
__ISB();
|
||||
}
|
||||
@@ -0,0 +1,30 @@
|
||||
ENTRY(Reset_Handler);
|
||||
MEMORY {
|
||||
flash(rx) : ORIGIN = 0x08000000, LENGTH = 2048k
|
||||
sram(rwx) : ORIGIN = 0x20000000, LENGTH = 192k /* remaining 64k in a separate address space */
|
||||
}
|
||||
_estack = ORIGIN(sram) + LENGTH(sram); /* stack points to end of SRAM */
|
||||
|
||||
SECTIONS {
|
||||
.vectors : { KEEP(*(.isr_vector)) } > flash
|
||||
.text : { *(.text* .text.*) } > flash
|
||||
.rodata : { *(.rodata*) } > flash
|
||||
|
||||
.data : {
|
||||
_sdata = .; /* for init_ram() */
|
||||
*(.first_data)
|
||||
*(.data SORT(.data.*))
|
||||
*(.iram .iram* .iram.*)
|
||||
_edata = .; /* for init_ram() */
|
||||
} > sram AT > flash
|
||||
_sidata = LOADADDR(.data);
|
||||
|
||||
.bss : {
|
||||
_sbss = .; /* for init_ram() */
|
||||
*(.bss SORT(.bss.*) COMMON)
|
||||
_ebss = .; /* for init_ram() */
|
||||
} > sram
|
||||
|
||||
. = ALIGN(8);
|
||||
_end = .; /* for cmsis_gcc.h and init_ram() */
|
||||
}
|
||||
@@ -0,0 +1,70 @@
|
||||
// Copyright (c) 2026 Cesanta Software Limited
|
||||
// All rights reserved
|
||||
|
||||
#include "mongoose.h"
|
||||
#include "hal.h"
|
||||
|
||||
#define DEBUG_UART USART3
|
||||
#define LED1 PIN('B', 0)
|
||||
#define LED2 PIN('B', 7)
|
||||
#define LED3 PIN('B', 14)
|
||||
|
||||
// Redirect stdout debug output to UART
|
||||
int _write(int fd, char *ptr, int len) {
|
||||
if (fd == 1 || fd == 2) hal_uart_write_buf(DEBUG_UART, ptr, (size_t) len);
|
||||
return len;
|
||||
}
|
||||
|
||||
static void blink_task(void) {
|
||||
static uint64_t blink_timer = 0;
|
||||
if (hal_timer_expired(&blink_timer, 500, hal_get_tick())) {
|
||||
hal_gpio_toggle(LED1);
|
||||
}
|
||||
}
|
||||
|
||||
uint64_t mg_millis(void) {
|
||||
return hal_get_tick();
|
||||
}
|
||||
|
||||
bool mg_random(void *buf, size_t len) {
|
||||
for (size_t n = 0; n < len; n += sizeof(uint32_t)) {
|
||||
uint32_t r = hal_rng_read();
|
||||
memcpy((char *) buf + n, &r, n + sizeof(r) > len ? len - n : sizeof(r));
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
static void http_ev_handler(struct mg_connection *c, int ev, void *ev_data) {
|
||||
if (ev == MG_EV_HTTP_MSG) { // New HTTP request received
|
||||
struct mg_http_message *hm = (struct mg_http_message *) ev_data;
|
||||
if (mg_match(hm->uri, mg_str("/api/tick"), NULL)) {
|
||||
mg_http_reply(c, 200, "", "{%m:%llu}\n", MG_ESC("tick"), hal_get_tick());
|
||||
} else {
|
||||
mg_http_reply(c, 200, "", "Hi from Mongoose, tick %llu\n",
|
||||
hal_get_tick());
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
int main(void) {
|
||||
hal_clock_init();
|
||||
hal_rng_init();
|
||||
hal_gpio_output(LED1);
|
||||
hal_gpio_output(LED2);
|
||||
hal_gpio_output(LED3);
|
||||
hal_uart_init(DEBUG_UART, 115200);
|
||||
|
||||
hal_ethernet_init();
|
||||
|
||||
// Start a minimal web server
|
||||
struct mg_mgr mgr;
|
||||
mg_mgr_init(&mgr);
|
||||
mg_http_listen(&mgr, "http://0.0.0.0", http_ev_handler, NULL);
|
||||
|
||||
for (;;) {
|
||||
mg_mgr_poll(&mgr, 0);
|
||||
blink_task();
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
@@ -0,0 +1,23 @@
|
||||
#pragma once
|
||||
|
||||
#define MG_ARCH MG_ARCH_ARMGCC
|
||||
#define MG_TLS MG_TLS_BUILTIN
|
||||
|
||||
#define MG_ENABLE_TCPIP 1
|
||||
#define MG_ENABLE_CUSTOM_MILLIS 1
|
||||
#define MG_ENABLE_CUSTOM_RANDOM 1
|
||||
#define MG_ENABLE_DRIVER_STM32F 1
|
||||
#define MG_OTA MG_OTA_STM32F
|
||||
|
||||
// Construct MAC address from the MCU unique ID. It is defined in the
|
||||
// ST CMSIS header as UID_BASE
|
||||
#define MGUID ((uint32_t *) 0x1FFF7A10) // Unique 96-bit chip ID
|
||||
#define MG_SET_MAC_ADDRESS(mac) \
|
||||
do { \
|
||||
mac[0] = 2; \
|
||||
mac[1] = MGUID[0] & 255; \
|
||||
mac[2] = (MGUID[0] >> 10) & 255; \
|
||||
mac[3] = (MGUID[0] >> 19) & 255; \
|
||||
mac[4] = MGUID[1] & 255; \
|
||||
mac[5] = MGUID[2] & 255; \
|
||||
} while (0)
|
||||
Reference in new issue
Block a user