STM32 MCUs Embedded software

This is a sister thread to this one.Essentially, I can’t get a ping out of either Nucleo-H755ZI-Q or STM32F779I-EVAL, the other thread focuses on the Eval board.I’ve tried many examples but I’m focusing on this one. There are other threads about this example but I think they may have got lost in the migration.I’ve attached the project as it sits on my computer.The STM32 device’s IP address is 192.168.2.180.If I ping it on my PC, I get Request timed out.This is my network configuration.The Nucleo board is connected to a TP-Link Ethernet switch, which my PC is also connected to.Do you have any idea why this is not working?Thank you.

Hi everyone,I'm using an STM32H743 in USB device mode as a virtual USB drive (UF2 protocol) for firmware upgrade. Main program runs in Bank 1 Upgrade firmware is written to Bank 2 During the file copy process (from PC to the virtual UF2 disk), the USB connection drops unexpectedly (host resets the bus, captured by USB analyzer).However, if I connect the device through a USB Hub, the success rate improves dramatically.I understand that in dual-bank Flash architecture, erasing or programming Bank 2 should not interfere with: USB peripheral operation (running from Bank 1) AHB bus access Interrupt latency (if properly configured) But my test shows the opposite: Direct connection → frequent host reset Via Hub → mostly works fine Questions: What could cause the host to reset the bus when only the inactive Bank is being erased/programmed? Why does adding a Hub improve reliability — is it signal integrity, power filtering, or host timing tolerance? Could Flash write/erase temporari

Dear all!i’m working with STM32H743ZIT6 in ETH RMII, ADC, blink led if i disable MPU, Lwip config, led will blink, when i enable MPU_Config();  SCB_EnableICache();  SCB_EnableDCache();  MX_LWIP_Init(); CPU hang, led didn’t blink, so can you help to take alook my IOC file, and share me how to config this task

0x0BF97000 (system bootloader base per AN2606): the jump appears to succeed (In Debug reaches the bootloader region), but execution then breaks at an address inside the bootloader ROM with no further progress and no USB enumeration. The hardware boot path works correctly. The problem is purely on the software-jump path.I created an empty project in sample you can download and test it. I also attached my option bytes (i think everything is default).MCU: STM32H573 (also tested h523)/** ****************************************************************************** * @file dfu_jump.c * @author Uğur Tümer * @brief See dfu_jump.h. Implements the magic-word + soft-reset path into * the STM32H523 system bootloader (USB DFU on PA11/PA12). ****************************************************************************** */ #include "dfu_jump.h" /** Magic word stored in TAMP_BKP0R between the request and the next boot. */ #define DFU_JUMP_MAGIC 0xDEADB007UL #define BOOT

Heyho,H723..H735, using DTCM a lot, also ITCM for some functions.Recently I found some strange behaviour:the global pointer sFlashIntCtl.pu8WrBuf to the buffer u8FlashIntPageBuf (global) is set in function A setting the pointer is working, printf via UART later on function A calls function B pointer sFlashIntCtl.pu8WrBuf is not changed anywhere, no IRQ or anywhere first thing function B is doing: check if pointer sFlashIntCtl.pu8WrBuf != NULL check fails, because sFlashIntCtl.pu8WrBuf = 0 (checked via UART, see below) Here’s the UART output:function A UART output:*** start *** wr SPI flash to APP flash&u8FlashIntPageBuf[0] 20000800sFlashIntCtl.pu8WrBuf 20000800 <- this OKAYsOspiFlashCtl.pu8RdBuf 20000800sFlashIntCtl.u32WrAddr 08040000sFlashIntCtl.u32ChkAddr 08040000sOspiFlashCtl.u32RdAddr 00000100sOspiFlashCtl.u32RdLen 32...function A calls function Bfunction B UART output:#E FlashIntWrPage(): pu8WrBuf = NULLsFlashIntCtl.pu8WrBuf 00000000 <- WTF ?&u8FlashI

Hi all,I'm trying to read the DAC output value using the integrated ADC and the connection to it (channel 19). However, I only read random values between [0;2] units. The DAC works properly using the integrated buffer. I route the DAC output to the external pin and to on-chip analog peripherals, so I can confirm the output with a multimeter. The ADC seems to work properly too: I can read internal temperature, VrefInt, and 2 input pins with scan mode. However, when I enable the VDAC_OUT1 and add it to scan mode, I get random values between 0 and 2 (only for VDAC_OUT1, the other readings are fine). Sample times are abondant (few us); I have tried different sampling values, but, as expected, it doesn’t change anything.I configure this setup with the latest version of CubeMX. Readings and DAC configuration are performed using basic HAL (no interrupt and no DMA).Does anyone have an idea to fix this issue?  

In many NetX Duo Ethernet sample projects, HAL_ETH_Start_IT() is not called depending onthe timing of the PHY link‑up. When this happens, Ethernet communication never starts.The behavior appears to be related to how App_Link_Thread_Entry() handles link status:- nx_ip_interface_status_check() is used to check the NX_IP_LINK_ENABLED status.- nx_ip_driver_direct_command() issues NX_LINK_ENABLE or NX_LINK_DISABLE when the PHY link state changes.Normal behavior- If the PHY is link-up at startup, HAL_ETH_Start_IT() is called during initialization.- If the PHY is link-down at startup, App_Link_Thread_Entry() later detects the link-up,  issues NX_LINK_ENABLE, and HAL_ETH_Start_IT() is called correctly.Problem caseIf the PHY is link-down at startup but becomes link-up before App_Link_Thread_Entry() starts running:- The thread does not issue NX_LINK_ENABLE or NX_LINK_DISABLE.- HAL_ETH_Start_IT() is not called.- Ethernet communication cannot be established.In PoE environments, the power‑on to lin

I am trying to interface the EEPROM AT24C04C with STM32G4 series controllers. I have confusion in the function parametersHAL_StatusTypeDef HAL_I2C_Mem_Read_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size)Can you please clarify on the MemAddSize parameter what has to be sent to for the above EEPROM?2nd Question: 1 page is 16 bytes, is it possible for me to write data above 16 bytes as well? 

7.3.4 FLASH read operations4. If the application reads … high-cycle data not previously written, a double ECC error is reported …When storing a variable amount of data to high-cycle flash, or dealing with setting up a new/blank MCU, the SW needs to check high-cycle flash which may be empty.I am looking for a good best-practice for how the flash is meant to be used. One option I am looking at disabled the ECC NMI (ironically) and checks if non-0xffs are present before clearing faults and re-enabling the NMI and reading the data.This only really works if it can be assumed the data is complete. It will still results in faults if data is not complete for some reason.Another option I can think of is handling the ECC NMIs and just allow normal reads, catch and clear ECC errors and report failure.Is there any solid recommendation on what to do? I can’t find any application note with examples.

Hi,I made a post a few weeks ago but I can’t find it now because I think this forum may have been updated.I have an STM32F779I-EVAL and I’ve managed to get LwIP_HTTP_Server_Raw compiled and running from this repo (STM32CubeF7/Projects/STM32F769I_EVAL/Applications/LwIP/LwIP_HTTP_Server_Raw).The display turns on, and within the debugger, there is no issue. It shows a DHCP timeout and then states its IP is 192.168.0.10, this is fine by me.With a normal ethernet cable connected to a network switch, or even using a crossover ethernet cable, I get nothing when I ping 192.168.0.10. Ethernet is set up correctly within Windows.Does anyone have a clue what’s going on here?I’ve tried basically every tutorial on the internet at this point to ping the device. The most hopeful looks like this one, but still nothing. I’ve also got a Nucleo-H755ZI-Q which doesn’t work with any example.I’m starting to think maybe it is my set up but I’ve tried across multiple computers, all using the correct settings (

Hi everyone!I have a project where I start, with the help of the Timer 3, three ADCs(ADC1, ADC2 and ADC4). Each of them samples 256 samples and then stops. Then I disable them and start a calibration process on all three ADCs.This is repeated with a frequency of 4Hz approx. Interesting thing is that after calibration I get very often different calibration values for ADC1, not really often for ADC2 and rarely for ADC4. Like this:60, 61, 6260, 61, 6261, 61, 6260, 61, 6260, 60, 6261, 61, 6261, 61, 6260, 61, 6260, 61, 62...Calibration is done with HAL function from ST. ADCs are turned of during calibration (ADEN = 0). Vref is external(3v) and it is stable, but I believe that offset calculation during calibration does not really use Vref voltage. Or it does?So I’m a bit confused. Is here some ADC guru of Yoda level?I appreciate any help.

After an aborted attempt to get the PSSI interface on the STM32N6 to work with DMA, I have decided to try a different part, the STM32H7A.  Running into a similar problem attempting to get the DMA to work.Here is a snap-shot of what I see:After receiving HAL_OK from HAL_PSSI_Receive_DMA(). I get the error interrupt with an error code of 0.  As may be seen, there is a DMA Transfer error.  This is running on the Nucleo-H7A3ZI-Q board.  The clock tree has been changed to increase the clock speed:The PSSI clock is produced by a PWM Timer and set to a frequency of 10MHz.  Data is from a 12 bit ADC with an active high Ready.  DE is not used.  I have a pull-up on Ready.  With HAL_PSSI_Receive_DMA() in a loop from a frame timer, each call returns HAL_OK followed by the error interrupt.The PSSI setup:The DMA setup:I’ve been studying the examples given on this board for both the H5 and the H7.  Whereas the N6 produced an immediate error response to multiple PSSI DMA attempts, the H7A does not.  T

I have a custom board with G491 and an LED driver (Kinetic KTD2037). MCU is the I2C master. Any attempt to read a register using HAL from the KTD2037 fails, ErrorCode = 0x2 (arb lost). Register writes are OK. I can read/write other devices on the same bus OK. The KTD2037 datasheet has this for an I2C register read:This doesn’t seem consistent with HAL_I2C_Mem_Read() or HAL_I2C_Master_Receive(). On a scope HAL_I2C_Mem_Read() results in  S, 7-bit addr, write, ack, reg addr, ack, Sr, 7-bit addr, read, ack, 0xFF, nackI try setting the internal register pointer (it may not have one) using HAL_I2C_Master_Transmit(), which works OK. Then I follow it with HAL_I2C_Master_Receive() resulting in  S, 7-bit addr, read, ack, 0xFF, nackIt looks like the master says arbitration lost because of unexpected nack from the KtTD037.The KTD2037 datasheet does not mention I2C repeat start.Any way to read this device without writing my own I2C driver?

I am using an STM32 Nucleo-F746ZG board and trying to establish a TCP/IP connection between the board and my laptop. The laptop is configured as the TCP server using Hercules tool, while the STM32 board acts as the TCP client. I have configured static IP addresses, and I am able to successfully ping the STM32 board from my laptop, which confirms basic network connectivity. However, when I start the TCP server on the laptop using Hercules, the STM32 client is unable to establish a connection to the server.I attach code and .ioc configuration for reference.

On STM32H733, the HAL provides __HAL_DBGMCU_FREEZE_FDCAN() in stm32h7xx_hal.h but it is conditionally compiled:#if defined(DBGMCU_APB1HFZ1_DBG_FDCAN)#define __HAL_DBGMCU_FREEZE_FDCAN() (DBGMCU->APB1HFZ1 |= (DBGMCU_APB1HFZ1_DBG_FDCAN))#endifDBGMCU_APB1HFZ1_DBG_FDCAN is not defined in stm32h733xx.h, so the macro does not exist at compile time and calling it gives:error: implicit declaration of function '__HAL_DBGMCU_FREEZE_FDCAN'Questions:Is FDCAN freeze during debug halt supported on STM32H733? If yes, why is DBGMCU_APB1HFZ1_DBG_FDCAN missing from stm32h733xx.h — is this a bug in the device header? What is the correct bit position to use as a workaround via direct register write? I need to pause the FDCAN peripheral during debugging, that is my goal. Thanks you very much for helping me out. 

Hello ST Community,I am working on a BLDC motor control project and would like to use STM32 Motor Control SDK (MCSDK) Workbench to generate firmware.My Hardware ConfigurationMotor Type: BLDCMotor Voltage: 48VMCU: STM32F405RGT6IssueWhen creating a new project in MCSDK Workbench, I cannot find my exact board/MCU configuration in the board selection list. Since the STM32F405RGT6 board is not available in the predefined options, I am unable to proceed with the standard project generation workflow.QuestionsIs STM32F405RGT6 officially supported by MCSDK Workbench?If yes, how can I create a project for this MCU when it is not listed in the board selection menu?Is there a way to add a custom board definition?Where can I obtain the required board configuration/JSON file (if available)?Can an existing board configuration be modified to support STM32F405RGT6?If MCSDK does support this MCU, what is the recommended procedure for configuring:PWM generationCurrent sensingHall sensors / Sensorless con

I have an external loader with a starting address of 0xA0000000. I can perform read and write operations with this loader using CubeProgrammer. However, when I define the external loader via CubeIDE, it programs the address 0x080000000.  Here is my flash.ld The external loader starts working when I start it with the external loader address 0x00000000, but I want to start with 0xA0000000. How can I fix it ?

Hello everyone,I am trying to built a communication through SPI between two stm32g474 mircontrollers in two seperate projects. One should act as a Master and the other as slave. The Master succesfully reads ADC values out and sends it. But unfortunately,  the Slave does not Receive it. Here is my Code for Master:/* USER CODE BEGIN Header */ /** ****************************************************************************** * @file : main.c * @brief : Main program body ****************************************************************************** * @attention * * Copyright (c) 2026 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 -----------

I have added a wolfSSH ICube repo to my project. It does not compile, showing:  Cube/Middlewares/Third_Party/wolfSSL_wolfSSH_wolfSSH/wolfssh/src/internal.c: In function 'GenerateKey':Cube/Middlewares/Third_Party/wolfSSL_wolfSSH_wolfSSH/wolfssh/src/internal.c:2215:15: error: implicit declaration of function 'wc_SSH_KDF'; did you mean 'wc_HKDF'? [-Wimplicit-function-declaration] 2215 | ret = wc_SSH_KDF(hashId, keyId, key, keySz,I checked the configwolfSSL.I-CUBE-wolfSSL_conf.hand it seems to be missing the wolf repo has:/* Enable wolfSSL features needed for wolfSSH */#define WOLFSSL_WOLFSSH           /* Enable wc_SSH_KDF function */  Do I have to manually add it? Am I missing some other config that enables it?wolfSSH example referencewolfip/src/port/stm32h563/user_settings.h at master · wolfSSL/wolfip 

Hello, I am using the RTC wakeup from the power standby example provided in the STM32C5 repository. The example starts the RTC wake-up timer and places the device in standby mode. The device does go to standby, and it does wake up due to the RTC wakeup interrupt; however, the RTC initialization fails after wakeup. It is worth mentioning that the only way I can get rid of this error is to power cycle the board.The failure happens in HAL_RTC_WAKEUP_SetConfig due to RTC_WaitSyncrhroWUTW() returning an error due to  RTC_CR_WUTE being set.static hal_status_t RTC_WaitSynchro_WUTW(void) { uint32_t tickstart; if (LL_RTC_IsActiveFlag_INIT() == 0U) { if (LL_RTC_WAKEUP_IsEnabled() == 1U) { return HAL_ERROR; // Code returns this error } tickstart = HAL_GetTick(); while (LL_RTC_IsActiveFlag_WUTW() == 0U) { if ((HAL_GetTick() - tickstart) > RTC_TIMEOUT_VALUE) { if (LL_RTC_IsActiveFlag_WUTW() == 0U) { return HAL_ERROR; } } } } return HAL_OK; }To make the examp

Hello, I am trying to make the lpuart1+dma_linked_list transferring data in stop1 mode.My setup is like this:    SPI1 + GPDMA: // SPI clocked from HSI    Start transfer    Enter STOP    SCK continues toggling    DMA continues    Transfer completes    DMA irq wakes from stopLPUART1 + GPDMA: // LPUART clocked from LSE    Start transfer    Enter STOP    TX line freezes    DMA stops progressing    Exit STOP    TX resumes Both peripherals are using dma in linked list mode in a similar manner.My understanding is that since both peripherals are “autonomous” they should work in a similar way. I have no problem with the SPI1 working during stop1 mode but the LPUART seems to behave differently.This is my LPUART1 init code: void bsp_lpuart_init(void){    bsp_lpuart1_reset_hard();        LL_LPUART_SetPrescaler(LPUART1, LL_LPUART_PRESCALER_DIV1);    // Disable before configuration    LL_LPUART_Disable(LPUART1);    while (LL_LPUART_IsEnabled(LPUART1));    LPUART1->BRR = 3495; //419430    LL_LPUAR

Iam triying to capture data using timer+hpdma cofiguration , but hpdma is not working, not copying data .. but the same configuration with gpdma is working fine.. how to configure hpdma any special configuration regarding RIF.. please give some brief explanation 

Hello,I have completed this guide successfully:How to integrate TouchGFX and camera middleware on an STM32N6570-DK However, I am running into an issue when I try to add SDMMC2 or ETH in the .ioc.  After I generate code then build in the IDE, I get the below error: C://TouchGFXProjects/VisionControlboard2/FSBL/Core/Src/main.c:334:(.text.startup.main+0x12c): undefined reference to `HAL_SD_Init'C:/ST/STM32CubeIDE_2.0.0/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.14.3.rel1.win32_1.0.100.202602081740/tools/bin/../lib/gcc/arm-none-eabi/14.3.1/../../../../arm-none-eabi/bin/ld.exe: (HAL_SD_Init): Unknown destination type (ARM/Thumb) in ./Application/User/Core/main.oC://TouchGFXProjects/VisionControlboard2/FSBL/Core/Src/main.c:334:(.text.startup.main+0x12c): dangerous relocation: unsupported relocationProject in link below:https://app.box.com/s/bdbyzi5eqvqhgib90klxgehmhs8pkynsWhat is the best method to get this resolved?  I am using STM32CubeIDE Version 2.1.1

Heyy, I'm using an STM32u545 (on a Nucleo board), and I'm trying to wake up my MCU from stop 2 mode using wake-up pin 2. Wake-up pin 2 is connected to LPTIM3 (via a jumper wire), and LPTIM3 works. Besides trying to wake up the CPU. An LPBAM application is collecting data using the ADC4 and LPDMA with LPTIM1. Also, it does work. But now I don't know how to wake the CPU using LPTIM3. Did I miss something, or is this not the way to go/ is there an easier way to do this? The program should: - read data on a specific frequency - wake up every two seconds to write the data to an SD card (eventually) Thanks in advance :) 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 Power */ SystemPower_Config(); /* Configure the sys