STM32 MCUs Embedded software

STM32H523HEYX Flash Write Issue1.I’m currently working on a project using the STM32H523HEYX.I'm using STM32CubeIDE, and the firmware libraries are up to date.I’m also using STM32 X-CUBE-FREERTOS.I’m trying to write data to Flash memory using the following functions:2. HAL_FLASHEx_Erase(...);HAL_FLASH_Program(FLASH_TYPEPROGRAM_QUADWORD, ASDF, (uint32_t)&quadData[0]);However, the code triggers a HardFault when executed.3. When I run the same code on a STM32H533 Nucleo board, it works without any fault and writes to Flash successfully.4. I'm not sure why this Flash issue only occurs on the STM32H523HEYX.If anyone has experienced a similar issue or knows of any related problems, I’d appreciate your advice.Thank you, fellow developers!

Hello.I've been struggling for several weeks to fix an issue when sending data over MQTT using LwIP on an STM32F407 microcontroller.For periodic message publishing, I'm using the following code:void MqttPublishTask(void const * argument) { err_t err; while(1) { xEventGroupWaitBits(mqttSendEventGroup, pdFALSE, pdTRUE, portMAX_DELAY); if(mqtt_client_is_connected(&client)) { cJSON *root = cJSON_CreateObject(); for(uint8_t i = 0; i < (nodeID - 64); i++) { cJSON *tap_metrics = cJSON_CreateObject(); cJSON_AddNumberToObject(tap_metrics, "ER", taps[i].alarmCode); cJSON_AddNumberToObject(tap_metrics, "C", taps[i].coldWater); cJSON_AddNumberToObject(tap_metrics, "H", taps[i].hotWater); cJSON_AddNumberToObject(tap_metrics, "E", taps[i].totalEnergy); cJSON_AddNumberToObject(tap_metrics, "T", taps[i].waterFlowTime); cJSON_AddNumberToObject(tap_metrics, "N", taps[i].numberOfUses); snprintf(serialString, sizeof(serialString), "%lu", taps[i

Hello everyone,I ran into a problem. First of all, I have two tablets: one with a bootloader and another without it. Tablet without bootloader works fine so its something bad in bootloader. I’m trying to plug in and unplug the power supply, and sometimes this happens:What can cause it? I'm adding my bootloader code/* USER CODE BEGIN Header */ /** ****************************************************************************** * @file : main.c * @brief : Main program body ****************************************************************************** * @attention * * Copyright (c) 2025 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** */ /* USER CODE END Header */ /* Includes -----------------------------

Hi,I'm using an STM32H7 board with a LAN8742 PHY, configured via STM32CubeMX.LwIP is initialized without RTOS, and Ethernet is in RMII mode. The main goal of this project is to receive data over UART and forward it via Ethernet.I want the STM32 board to connect to a standard router using a physical Ethernet cable, obtain a dynamic IP address via DHCP, and then transmit the received UART data over the network.Currently, the board does not seem to request or receive any IP address — while the PC connected to the same router receives an IP successfully, the STM32 does not. So far I've verified: MX_LWIP_Init() is called from main.c MX_LWIP_Process() is called inside the main while (1) loop MAC address is manually set in ethernetif.c: MACAddr[0] = 0x02; MACAddr[1] = 0x12; MACAddr[2] = 0x34; MACAddr[3] = 0x56; MACAddr[4] = 0x78; MACAddr[5] = 0x9A; DHCP is enabled in .ioc under LwIP configuration netif_add(), netif_set_default(), netif_set_up() and dhcp_start() are called ETH is

Hello,I am trying to fill a buffer from the on-board MEMS microphone using the BSP_AUDIO_IN_RecordPDM() function. However, execution pauses around HAL_SAI_Receive_DMA() and the BSP_AUDIO_IN_IRQHandler() is called. The stack trace is as follows:Checking the hdma variable on the debugger, I can see the error code is 1, corresponding (I believe) to a transfer error. I tried looking at the relevant registers with breakpoints, but they were at 0x0 at every point:I've tried almost everything under the sun. I disabled the D-Cache and allocated all the memory to RAM_D1, I tried allocating my buffer (copied below) to each of RAM_D1, D2, and D3ALIGN_32BYTES (uint16_t recordPDMBuf[AUDIO_IN_PDM_BUFFER_SIZE]) __attribute__((section(".RAM_D1")));My linker script looks like this:/* Highest address of the user mode stack */ _estack = ORIGIN(RAM_D1) + LENGTH(RAM_D1); /* end of "RAM_D1" Ram type memory */ _Min_Heap_Size = 0x800 ; /* required amount of heap */ _Min_Stack_Size = 0x800 ; /* requ

I've been working on a project on STM32F746-Discovery with only CMSIS (no other libraries written by not me) on a Windows machine in STM32CubeIDE. I used the default STM startup file (.s with a vector table and a memory initialization), the startup_stm32f746nghx.s. This file, among other things, defines a list of weak IRQ handler hooks with interrupt handler names. So naturally I took the name HASH_RNG_IRQHandler straight from the file. I declared the function extern "C" to prevent name mangling in C++, besides, it's far from the first interrupt handler in the project. All of them work without an issue. When I compiled and ran the project, I found myself hardfaulting. I debugged my way through everything, but everything looked solid. It just suddenly crashed after I enabled the RNG peripheral. I verified everything there was to verify, but found nothing odd, right before RNGEN, the RNG showed no error flags, no seed error, no clock error. My gut feel told me to look at t

Hello,I am trying to use the PKA module on a STM32U5 controller. I have configured the clock at 160Mhz and also initialized the Ring. However, when I try to initialize the PKA, it runs into ADDRERRF = 1, I was expecting ofcourse INITOK to be 1. Does anyone have Idea what am I missing here or what might be causing the ADDRERRF? Thanks,Abhi

Title: UART Loopback with Interrupts Halts After Second Transmission on STM32H747I-DISCO Hello everyone, I'm working on a simple UART loopback test on an STM32H747I-DISCO board using the HAL libraries, and I've run into an issue where my interrupt-driven communication halts unexpectedly. The goal is to have USART2 continuously transmit a byte, receive it back via a physical loopback (TX and RX pins are connected), increment the value, and repeat the process. I'm using an LED to visually confirm when a byte is successfully received. The process starts correctly but stops after the first full cycle. Here is the exact sequence of events I'm observing with the debugger: main() calls HAL_UART_Transmit_IT() to send the first byte. The HAL_UART_TxCpltCallback() is successfully triggered. Inside the TxCpltCallback, I call HAL_UART_Receive_IT() to arm the receiver. The byte is received, and HAL_UART_RxCpltCallback() is successfully triggered. The LED toggles as expected. Inside t

Hello,I have a STM32H747I-DISCO I want to use to record audio. In my test code I tried to record 3 seconds of audio after pressing the JOY_SEL button. I tried to setup the configuration of peripheral SAI4 for PDM and to use DMA and PDM2PCM using the CubeMX tool. I also tried to just use the BSP provided by ST for the discovery board. I was not able to get either the manual configuration or the BSP configuration to work. I have already looked at AN5027 and the examples provided by ST in the STM32Cube_FW_H7_V1.12.1 repository. The examples provide audio recording but for different boards. The DFSDM example for this board is not that useful when using SAI for communication. Any guidance or detailed procedure on how to setup the on-board digital microphone using SAI for the STM32H747I-DISCO is much appreciated!Manual/BSP Setup:CPU ICache enabledCPU DCache enabledFreeRTOS enabledGPIOs for joy stick button configuredTIM6 and TIM3 used for sysclks for Core M7 and Core M4 respectively. (b

Hi,I try to use 6 external interrupts but only EXT4_15 is functionning. All is functionning correctly when i use HAL_GPIO_ReadPin() function without interrupts. Thank you for your HELP void EXTI0_1_IRQHandler(void) { /* USER CODE BEGIN EXTI0_1_IRQn 0 */ /* USER CODE END EXTI0_1_IRQn 0 */ HAL_GPIO_EXTI_IRQHandler(EV5_Pin); HAL_GPIO_EXTI_IRQHandler(EV6_Pin); /* USER CODE BEGIN EXTI0_1_IRQn 1 */ /* USER CODE END EXTI0_1_IRQn 1 */ } /** * @brief This function handles EXTI line 2 and 3 interrupts. */ void EXTI2_3_IRQHandler(void) { /* USER CODE BEGIN EXTI2_3_IRQn 0 */ /* USER CODE END EXTI2_3_IRQn 0 */ HAL_GPIO_EXTI_IRQHandler(EV89_Pin); /* USER CODE BEGIN EXTI2_3_IRQn 1 */ /* USER CODE END EXTI2_3_IRQn 1 */ } /** * @brief This function handles EXTI line 4 to 15 interrupts. */ void EXTI4_15_IRQHandler(void) { /* USER CODE BEGIN EXTI4_15_IRQn 0 */ /* USER CODE END EXTI4_15_IRQn 0 */ HAL_GPIO_EXTI_IRQHandler(EV2_Pin); HAL_GPIO_EXTI_IRQHandler(EV14_Pin)

Hello everyone, I'm working on a custom board that uses the STM32H723ZGT6 together with the LAN8742A-CZ-TR Ethernet PHY. During the call to HAL_ETH_Init() in the stm32h7xx_hal_eth.c file, the initialization fails and gets stuck in this loop:   /* Wait for software reset */ while (READ_BIT(heth->Instance->DMAMR, ETH_DMAMR_SWR) > 0U) { if ((HAL_GetTick() - tickstart) > ETH_SWRESET_TIMEOUT) { /* Set Error Code */ heth->ErrorCode = HAL_ETH_ERROR_TIMEOUT; /* Set State as Error */ heth->gState = HAL_ETH_STATE_ERROR; /* Return Error */ return HAL_ERROR; } } I suspect the issue may be related to the NRST pin. On my PCB, I have connected the NRST pin of the LAN8742A to both the MCU's NRST and the ST-Link NRST pin — similar to what is shown in the STM32H7 Nucleo-144 (MB1364) reference design.     However, when I checked the LAN8742A datasheet, it suggests that this pin should be driven in a specific way     Could this NRST wiring be the reason fo

I am doing development for the STM32N6570-DK board in Zephyr. I can build a simply "blinky" project:$ west build -p always -b stm32n6570_dk ./applications/blinkyAnd can flash the device:$ west flash But when I try to debug:$ west debugserverI get this error:FATAL ERROR: no debugserver runner available for board stm32n6570_dk/stm32n657xx. Check the board's documentation for instructions.I have tried several variations of specifying the runner, but get an error each time, i.e.:$ west debugserver --runner jlinkFATAL ERROR: board stm32n6570_dk/stm32n657xx does not support runner jlinkTo fix, configure this runner in /home/stuart/ns-iot-dev-platform/zephyr/boards/st/stm32n6570_dk/board.cmake and rebuild.or$ west debug --runner openocd$ west debugserver --runner stlink_gdbserveretc.I am running Zephyr v4.1.1.Can someone please confirm that this chip is supported? Anyone tried to debug with Zephyr? Am I doing something wrong?Thank you!    

I'm trying to generate an HID keyboard through CubeMX for USBX. I'm using an F411CE based board so picked the appropriate software pack for that. However, when I go to pick to pick components, I can only see the generic HID pack instead of separate keyboard and mouse packs as I've seen here before. I'd usually be fine with this and add the keyboard files in myself but this generic HID pack is based on a mouse implementation and adds a lot of unnecessary bloat to the stack. Is there a way to generate the files without the ux_device_mouse files?

Hi,I was trying to configure WRP protection in the flash for page 0 to page 11 and I am using STM32L443VC MCU.But I am seeing different value in the FLASH_WRP1AR for WRPstartoffset = 0x80 --Expected(0x00). Please find attached snapshot for the reference. Please do check the code snippet as well and let me know any configuration am I missing?

Hello, I am using a STM32H563ZI with an external PSRAM QSPI device, the APS6404L. I am using Quad-SPI through the OCTOSPI interface and have been successfully able to get into memory mapped mode. However, every time I go to read, I read out only 0 data. Has anyone ran into this same issue? I have pasted my code for transitioning the device to memory mapped mode and a subsequent test write/read. Thanks!  int main(void) { /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /* MCU Configuration--------------------------------------------------------*/ /* Reset of all peripherals, Initializes the Flash interface and the Systick. */ HAL_Init(); /* USER CODE BEGIN Init */ /* USER CODE END Init */ /* Configure the system clock */ SystemClock_Config(); /* USER CODE BEGIN SysInit */ /* USER CODE END SysInit */ /* Initialize all configured peripherals */ MX_GPIO_Init(); MX_ICACHE_Init(); MX_OCTOSPI1_Init(); /* USER CODE BEGIN 2 */ /* USER CODE END 2 */ /* In

Split from STM32f407Vet6 gets stuck in MX_LWIP_Init();  Please provide full details of your setup, what debugging you've done so far, etc - see How to write your question to maximize your chances to find a solution   Did you find what was causing this? I am having the same issue it would seem.

Good morning, I made a project using stm32f407vet6, configuring the stm32f407vet6 to use ethernet network without freertos, I can ping it and it responds immediately, follow the code:#include "main.h"#include "lwip.h"void SystemClock_Config(void);static void MX_GPIO_Init(void);static void MX_RTC_Init(void);/* USER CODE BEGIN 0 */extern struct netif gnetif;struct pbuf *p;/* USER CODE END 0 *//*** @brief The application entry point.* @retval int*/int main(void){HAL_Init();SystemClock_Config();MX_GPIO_Init(); MX_LWIP_Init();MX_RTC_Init();while (1){ethernet_input(p, &gnetif);sys_check_timeouts();}/* USER CODE END 3 */}but now I want to use freertos and have a UDp server, but when configuring freertos, stm32f407vet6 gets stuck inside MX_LWIP_Init();, the firmware version for STmf4 is 1.28.1,  here is the code:#include "main.h"#include "cmsis_os.h"#include "lwip.h"osThreadId_t defaultTaskHandle; const osThreadAttr_t defaultTask_attributes = {.name = "defaultTask",.stack_size = 128 *

I have started for integration of NUCLEO-L476RG board with X-NUCLEO-IKS02A1 expansion board for getting live values from the accelerometer, magnetometer and gyroscope.Started from creating a project on STM32CubeIDE then selected X-CUBE-MEMS1 package, selected Board Extension IKS02A1, motion fusion library, gyroscope calibration, accelerometer calibration and magnetometer calibration libraries.Also, enabled the CRC, SPI, I2C, USART in the configurations. When generated the code, motion_fx.h file generated.So further I want to know what else libraries or header files I need to acheive my final goal, to get tje yaw, pitch, roll values when the board is tilted or moved or to calibrate them.

I'm building a USB Audio Class 1.0 full-speed microphone on an STM32L4 (HSI48+CRS clock) using ST's USBD stack. So far I'm just streaming a 1 kHz test tone in 48 kHz/16-bit.Platform support I need - macOS: must use explicit or implicit feedback (Adaptive isn't supported on IN)- Android: restricted to UAC1.0 support which is essential for me so UAC2.0 is out of the question- Linux: adaptive works fine, explicit does not yet work for me- Windows: what's supported here?Hardware & clock- USB FS off HSI48 with CRS locked to SOF- SOF interrupts enabled- ADC sampling not in use yet (sine is generated and sent in `USBD_AUDIO_DataIn` callback)hpcd_USB_FS.Init.Sof_enable = ENABLE;DescriptorsConfiguration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 0x007e bNumInterfaces 2 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xa0 (Bus Powered) Remote Wakeup MaxPower 100mA Interface Association: bLength 8 bDescriptorType 11 bFirstInterface 0 bInterfaceCount 2 bFunc

I am receiving errors such as 'HAL_StatusTypeDef' does not name a type; did you mean 'NOR_StatusTypedef'?' and 'HAL_LockTypeDef' does not name a type' in my files in STM32F4xx_HAL_Driver/Inc . i create project automatically with stm32CubeIDE. What causes these errors?Thanks 

Hi!I have no problem with writing, reading, or erasing with dual mode, but erase stops working as soon as I change the DBANK option byte to "Single bank mode" (Uncheck it).I assume there is something i need to change in the STM32G4XX files as well, because DBANK is always defiend:I have tried to search on my own, but have not found any solution. Out of the 2 relevant hits I found online, one did not work and the other seems to be unverified and not easy to testThis is my code, which simply calls "stm32g4xx_hal_flash.c" and "stm32g4xx_hal_flash_ex.c" functions    if(HAL_FLASH_Unlock() == HAL_OK) { uint32_t PageError; if(HAL_FLASHEx_Erase(&pEraseInit, &PageError) != HAL_OK) { HAL_FLASH_GetError(); } while(HAL_FLASH_Lock() != HAL_OK); }     Anyone have any suggestion?Thank you in advance

Hello, dear.I am working with Nucleo-H753ZI board to implement USB in - SAI out streaming. My goal is USB input to SAI output audio streaming for sample rate 48k and 44.1k.input condition is 44k or 48k, 16bit, 2channel, output condition is 44k or 48k, 32bit, 2channel. I am attaching my project and its files : usbd_audio.c, usbd_conf.h, usbd_audio.h are fixed for my purpose.It is recognized in PC as selectable audio driver and its SAI FS Frequency follows sample rate.When setting is 48k sample rate, it sounds well,But  44.1k sound is not right pitch and speed.I don't know which is the problem.   Please let me know my problem and how can fix it.Thank you. From SK Son.

The STM32H750B-dk Based Custom Board isn't entering debugging mode when using STM32CubeIDE . But QSPI Example Code is working perfectly.

Hi everyone,I’m currently trying to deploy the VENC_RTSP_SERVER code, but it's getting stuck during execution. In the UART terminal, I only see the following output before it hangs.After some debugging, I found that the code is getting stuck at line 133 in venc_app.c.tx_event_flags_get(&venc_app_flags, VIDEO_START_FLAG, TX_AND, &flags, TX_WAIT_FOREVER);Any help or suggestions would be appreciated. 

Hi everyone,I'm using an STM32F767 with an S25FL256S NOR flash over QSPI in indirect mode (HAL driver).I'm trying to write the string "HELLO" at address 0x000000, but after programming and reading, I always get: FF 45 4C 4C 4F → "ELLO".The first byte is always 0xFF. All other bytes are written and read correctly. What I’ve already done:Verified Flash ID: 01 20 18 (correct)Erased the sector before writingUsing 0x02 Page Program in 1-1-1 modeSet SIOOMode = QSPI_SIOO_INST_ONLY_FIRST_CMDSet FIFO threshold = 1Using indirect mode (HAL_QSPI_Command() + HAL_QSPI_Transmit()) Test Code:char tx[] = "HELLO";QSPI_PageProgram(0x000000, (uint8_t*)tx, strlen(tx) + 1);QSPI_ReadData(0x000000, rx, strlen(tx) + 1);Why is the first byte not being written?