STM32 MCUs Embedded software

I am using the STM32U585RIT6 MCU with the B-U585I-IOT02A development kit. My primary focus is on USB, and in my project, I have enabled USB CDC-ACM, through which data and messages are transmitted over USB.For this project, I need to enable firmware update support. I have been searching for a suitable example, but most available examples require manual interaction with the hardware—such as setting the BOOT0 pin high and resetting the board, or pressing a user button to jump to the bootloader and perform the firmware update via a programmer.However, I do not want any physical interaction with the board. I need the firmware update to be triggered purely through software, perform the update, and reset the device without manually changing the BOOT0 pin or pressing any buttons.Is this possible? If so, what are the steps that need to be followed, and are there any reference examples available for this approach?

Hello, dear colleagues!If my request seems inappropriate to you, I apologise — but I had no other choice.I've been struggling with this for a week now.Please, if anyone has a ready-made working project, share it or give it to me. I need a ready-made project for Nucleo-STM32H753ZI (MB1364-H753ZI-E01) that includes FreeRTOS with USB-CDC or Ethernet support.I have tried many times, but I still cannot get past the FreeRTOS initialisation stage. Thank you all.   *This post has been translated from Russian to comply with the ST Community guidelines.

Hello,I'm trying DUAL BOOT on STM32L471 and having a problem with SYSCFG->MEMRMP FB_MODE bit.I modified Dual Boot Bank Swap Boot Loader Example for STM32G4 project to fit my board, and everything goes well when the firmware put from the start of BANK1 (0x08000000). It starts from BANK1 and copies itself to BANK2, sets BFB2 of OPTION BYTES and calls HAL_FLASH_OB_Launch(). Then it starts from BANK2 (with address of 0x08000000 since FB_MODE=1) without problem.Then I put it from 0x08070000 (the last sector of BANK1) and adjusted VTOR, so that it's called as a sub-program from main which is positioned at start of BANK1(0x08000000), copies itself to 0x08080000, sets BFB2, and calls OB_Launch() but it doesn't boot from BANK2.VTOR must be set at the beginning of main like this:uint8_t bank = getActiveBank();if (bank == 1) SCB->VTOR=0x08070000;else SCB->VTOR=0x08000000; and modified linker script too.After calling HAL_FLASH_OB_Launch() to set BFB2, FB_MODE is also s

Hi, I have started from a project by Adam Berlinger.I have two UDP sockets, one receiving data max 500 bytes/s one sending data 200 bytes every 5 seconds and one TCPIP sending 4K every 20 ms.Netconn Api I have no problem. With BSD sockets, If I work receiving data from UDP socket from a single or maximum 2 clients the UDP socket works well, but if I have 3 or more clients sending data on that UDP port, after a while the sockets returns no data even if they are.If I ask to print stat at display everything seems to be correct and as I imagined there is full of available memory and of all, no error at UDP level.Do you have any idea on what is happening? I used the same code on LWIP 1.1 on another microcontroller slower with less memory but no dma, and everything worked very well.Best Regards 

Just wanted to see if anyone could point me in the right direction regarding a problem I'm having with implementing a USB device using MSC in standalone mode. The code initialises correctly as far as I can tell but as soon as it gets into the main loop, a HardFault is generated - this seems to be because ux_device_tasks_run() is trying to access ux_system_slave->ux_system_slave_dcd which is not initialised. I cannot see a function in the CubeMX (v1.5.1) code base that performs this. I have a reference project for the U385 micro and have confirmed the ioc files for USBX are essentially identical. I can't see a DCD registration function in that project either but apparently it works (I have no way of confirming without the hardware). I think in previous Cube versions, a function called ux_device_stack_dcd_register() was exposed but that no longer seems to be the case. The intention must be for it to be carried out another way but I'm having a hard time working out what this

Hello. I have two setups: one STM32H5 Nucleo eval board and a custom STM32H5 board. The Nucleo runs with the LAN8742 PHY while the eval board runs with the KSZ9567R switch. Both are configured to use RMII. I'm using the NetXDuo stack for both. The Nucleo board works just fine, but the custom does not. The custom board SW is based on the Nucleo SW, except removing the LAN8742 interface. I've checked out the HW on the custom board and it looks fine. I'm trying to do a simple ping from the PC. The first message is an ARP message. I see it on Wireshark  and it arrives just fine on the STM32. I see the MAC address and the source and destination IP which look correct in _nx_arp_packet_receivemessage_type : 1sender_physical_msw : 11352sender_physical_lsw : 3116224427sender_ip_address : 3232235781target_ip_address : 3232235787Then the SW creates the ARP reply and calls _nx_driver_packet_send. I can see the RMII Tx lines toggle after the ARP packet is sent, but for

Good morning, I've been trying to create a simple program for several days that allows me to ping from my laptop to my Nucle F767ZTI board, but to no avail. I'm using CUBE IDE 1.18. I initially followed a tutorial and was able to do it, but only in debug mode, not with the board in running mode (normal operation), without using FreeRTOS but only by enabling ETH and LWIP. Is there a project I can import and then continue making my subsequent changes from there? This is because the ping is only the initial part of my project that I'm about to create. Can you send me a link where I can download and import the project? Thanks in advance.Here some lines codes that I use: /* USER CODE BEGIN Header */ /** ****************************************************************************** * @file : main.c * @brief : Main program body ****************************************************************************** * @attention * * Copyright (c) 2025 STMicroelectronics. * All rights reserv

Hi Is it possible to run Zephyr RTOS on the STM32F411RET6 Nucleo board? If it is possible, how can I set up and use Zephyr RTOS on it? Please suggest the steps.

During stress testing involving repeated startup and shutdown, a fatal error was encountered in the STM32F407 Ethernet (ETH) module.The issue was observed during the startup phase, where a problem occurred in the ETH DMA. The DMASR register indicated a Fatal Bus Error.The following are the ETH register values captured when the error occurred:MACCR : 0x0200CE0CMACFFR : 0x00000000MACHTHR : 0x00000000MACHTLR : 0x00000000MACMIIAR : 0x000007D0MACMIIDR : 0x00001058MACFCR : 0x00000080MACVLANTR : 0x00000000MACRWUFFR : 0x00000000MACPMTCSR : 0x00000000MACDBGR : 0x00000000MACSR : 0x00000000MACIMR : 0x00000208MACA0HR : 0x80000103MACA0LR : 0x0AE18000MACA1HR : 0x0000FFFFMACA1LR : 0xFFFFFFFFMACA2HR : 0x0000FFFFMACA2LR : 0xFFFFFFFFMACA3HR : 0x0000FFFFMACA3LR : 0xFFFFFFFFMMCCR : 0x00000000MMCRIR : 0x00000000MMCTIR : 0x00000000MMCRIMR : 0x00020060MMCTIMR : 0x0020C000MMCTGFSCCR : 0x00000000MMCTGFMSCCR : 0x00000000MMCTGFCR : 0x00000001MMCRFCECR : 0x00000000MMCRFAECR : 0x00000000MMCRGUFCR : 0x00000003PTPTS

Split from Zephyr RTOS on Nucleo-F411RE ? - which has been answered.This is a new question.Hi T_HamdiThank you for your response.I have installed the Zephyr IDE and used the Blinky LED example. The firmware was flashed successfully; however, the LED is not glowing.I have attached an image for your reference. Please take a look.

I am trying to launch a dma of the input capture of the timer2 ch2 latched captured register to a memory buffer. I am using the DMA to allow me to record 75 captures so as to be able to determine the time for  75 cycles of a 500 KHz input signal. Set up is - TIM2 - internal clock (250MHz) - ch2 input capture direct modeIC CH2 - rising edge - direct - no division - filter 0GPDMA1 CH0 - standard - circular disable - request TIM2_CH2 - DMA Handle hdma(TIM_DMA_ID_CC2) - Block single - Priority low - Transaction normal - Dir p to m - Source increment disable - Width word - Burst 1 - Port 0 - Destination increment enabled - Width word - Burst 1 - Data handling disable - Trigger disable - Transfer event half endAt the moment Icache is disabled but I have tested in all three options. I am using HAL_TIM_IC_Start_DMA(&htim2, TIM_CHANNEL_2, periods, SAMPLE_SIZE) called from an interrupt routine triggered by a separate timer. Periods is my memory buffer and SAMPLE_SIZE is set to

Hi all,I failed to run Nucleo-G431RB board using Simulink "Monitor & Tune" mode via Simulink XCP protocol.I've got the error message at Simulink,"Could not connect to target application: XCP internal error: timeout expired, in response to XCP CONNECT command"There has been no problem for Simulink "Build, Deploy & Start".I followed an example from the link below.https://www.mathworks.com/help/ecoder/stmicroelectronicsstm32f4discovery/ug/STM32F4XX-ADC-example.htmlI've already changed Simulink model configuration to run Nucleo-G431RB LPUART.- Hardware board = STM32G4xx Based- Hardware board settings> Build options> Create> Select hardware = NUCLEO-G431RB- Connectivity > USART/UART = LPUART1- Connectivity > Serial port = COM1 (same port for STMicroelectronics STLink Virtual COM Port)MATLAB related version:- MATLAB 2023a- Embedded Coder Support Package for ARM Cortex-M Processors V23.1.0- Embedded Coder Support Package for STMicroelectronics STM32 Processors V23.

I am currently using the STM32N657 on the NUCLEO-N657X0-Q board to drive an 800x480 pixel display with 24-bit color. The display that I am using is the NHD-7.0-800480EF-ASXV#-T. I’m using the built in LTDC controller on the chip. I do know that the controller is working because the entire screen is black, the screen would be showing the backlight if it wasn’t. The problem is that I am unable to display anything at all when writing to the screen buffer.Here are the configuration parameters that I am using based on the data sheet:Here are the layer settings that I am using:Here is the clock configuration for the LTDC: Here is the code that I am running:main.cint main(void) { /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /* MCU Configuration--------------------------------------------------------*/ HAL_Init(); /* USER CODE BEGIN Init */ /* USER CODE END Init */ /* Configure the system clock */ SystemClock_Config(); /* USER CODE BEGIN SysInit */ /* USER CODE END SysI

I'm curious how hard of a task would it be to get UCPD working with the STM32N6 with zephyr. I see it's supported with the G0* https://docs.zephyrproject.org/latest/boards/st/stm32g071b_disco/doc/index.html From my understanding the UCPD hardware block is the same between the two chips?

Hello everyone, I have the following use case: I want to receive raw data via Ethernet, which works fine, but I have a problem: When I send 100 bytes, I only receive 14 bytes in my software on the MCU (STM32H7S3L8). I was able to fix this by settingAutomaticPadCRCStrip to DISABLE. Now I receive 104 bytes, which is also not the desired behavior. After a little research, I found out that the 4 bytes are CRC, so I continued searching. After some searching, I found the CRCStripTypePacket property and set it to ENABLE, but unfortunately this property has no effect. What do I need to do to get my 100 bytes but not the CRC? Do I need to set something else? Is this a bug? Please help me, I'm stuck.Thanksstm32h7rsxx-hal-driver 1.2.1Best regards,Paul B

I am developing a custom board using STM32H523RET6.It has a USB type C port, and I am trying to send some data from PC to the board through it, and decided to use USB CDC ACM with standalone mode. The code is based on this and this.ux_device_class_cdc_acm_write_run worked perfectly, but ux_device_class_cdc_acm_read_run doesn't work.No matter what kind of texts I send, ux_device_class_cdc_acm_read_run returns "T" (84). The code I am using is this;uint8_t UserRxBuffer[APP_RX_DATA_SIZE]; VOID USBX_DEVICE_CDC_ACM_Read_Task(VOID) { ULONG actual_length = 0; UX_SLAVE_DEVICE *device; device = &_ux_system_slave->ux_system_slave_device; /* Check if device is configured */ if ((device->ux_slave_device_state == UX_DEVICE_CONFIGURED) && (cdc_acm != UX_NULL)) { #ifndef UX_DEVICE_CLASS_CDC_ACM_TRANSMISSION_DISABLE /* Set transmission_status to UX_FALSE for the first time */ cdc_acm -> ux_slave_class_cdc_acm_transmission_status = UX_FALSE

Hi, I'm using stm32h7, currently working with SPI + DMA in HAL library, because of HAL overhead I want to move to LL library, where can I get the SPI+DMA using LL library examples, regards, Srinath

Hi. I'm having trouble using the old USB Host Middleware to read a USB stick with a STM32U545.I've tried to follow this article, doing my best to adapt it for the host middleware and also using the "FatFs_USBDisk" example project for the F767 Nucleo board and a usbh_conf.c/.h written by a coworker for another U545 project which supposedly worked at least once.My code fails in Enumeration when the MCU tries to get the device descriptor - The MCU sends a SETUP packet and a DATA0 packet with 0 bytes (instead of the expected 8) and the stick sends an ACK. The MCU then sends an IN packet and the stick sends a NACK. The IN & NACK are then repeated for many frames until the stick sends a STALL instead.Can anyone help me identify where the bug is and how to fix it?Thanks.

Hi Everyone, I've followed STguide on Ethernet on H755 using RTOShttps://community.st.com/t5/stm32-mcus/how-to-create-a-project-for-stm32h7-with-ethernet-and-lwip-stack/ta-p/49308/page/2/show-comments/trueand a github on ETH on bare metal (my case)https://github.com/AngryCarrot61/NUCLEO-H755ZI-Q_003_ETH?tab=readme-ov-file i got the board to work and ping, I've implemented MPU and connected it to a laptopDHCP is disabled, my laptop ip is 10.0.0.100, subnet 255.255.255.0, gateway 10.0.0.1the mcu ip is 10.0.0.60The ping works only if i flash the M4 core with an empty application which gets halted by the HSEM (it never works unless i flash the M4 first after power up) and the connection never lasts more than a minute. Looking for some help, i've included the whole zip file of the project if someboy could replicate it on their machine, i'm using a H755ZI nucleo boardThe problem seems to be releated to Rx heap size, but I'm lost

Hello,I am working with STM32H745 (dual core Cortex-M7 and Cortex-M4) and I am trying to understand the correct and supported way to stop and then restart the M4 core from the M7 core using software only, without resetting the whole chip.My goal is to implement a core-local watchdog mechanism where the M7 core keeps running and supervises the M4 core. If the M4 gets stuck or stops responding, the M7 should be able to stop or reset the M4 and then start it again cleanly.I have read the reference manual and found the following:SYSRESETREQ via AIRCR triggers a full system reset, so it is not suitable for this use case.Disabling RCC clocks does not actually stop the Cortex-M4 core execution.HAL_PWREx_ReleaseCore(PWR_CORE_CPU2) only releases CPU2 from the HOLD state and does not reset or stop a running M4 core.I found the MP_GRSTCSETR register and the M4 reset bit mentioned in some discussions, but the CMSIS and HAL naming is confusing and it is not fully clear whether this is the recommend

Hello, everyone on the forum. I am using ThreadX and FileX to write files to an SD card on the STMH735G-DK. I successfully created a directory using fx_directory_create and created a file using fx_file_create. This time, we'll tackle directory deletion using fx_directory_delete. However, if the directory contains files, deletion will fail with error code FX_DIR_NOT_EMPTY. How can I search for filenames within a directory using FileX? If anyone knows anything, please give me some advice.

Post edited by ST moderator to be inline with the community rules for the code sharing. In next time please use </> button to paste your code and a linker script content. Please read this post: How to insert source code. Hello, I ran into a very strange problem with a STM32H743 that I don't understand. I have the following config sequence: MX_ADC1_Init() -> generated by CubeMX MX_ADC2_Int() -> generated by CubeMX HAL_ADCEx_Calibration_Start(&hadc1, ADC_CALIB_OFFSET_LINEARITY, ADC_SINGLE_ENDED) HAL_ADCEx_Calibration_Start(&hadc2, ADC_CALIB_OFFSET_LINEARITY, ADC_SINGLE_ENDED) The MX_ADC1_Init() contains the following generated code: multimode.Mode = ADC_DUALMODE_REGSIMULT; multimode.DualModeData = ADC_DUALMODEDATAFORMAT_DISABLED; multimode.TwoSamplingDelay = ADC_TWOSAMPLINGDELAY_1CYCLE; if (HAL_ADCEx_MultiModeConfigChannel(&hadc1, &multimode) != HAL_OK) { Error_Handler(); } This worked without a problem on all my boards so far and I was able

Hello guys,for my bachelors project I have decided to build an embedded signal monitoring and classification tool, based on the STM32H7S3L8 Nucleo dev board (NUCLEO H7S3L8). I want to use all  14 available channels of the 2 adcs (technically each ADC has 14, but then pin assignments are shared, which is not beneficial) and i want to let the ADCs stream the data via HPDMA in the SDRAM. Unfortioutly I came across many problems with the configuration and programming, especially with clock configuration of the ADC+DMA in the scanning mode. Do some of you already have a working solution to the DMA placement in SDRAM (0x300000 32kB I believe) and with working ADCs you would like to share. Also, do you enable callbacks in that case?Usually I would share my config and code and ask for help to the specific problem, but as I am not at home and already lost my mind with this ******* DMA I might try it that way.Thanks so much and happy holidays !

this topic is rare，and i cant find a system learning information，can st develeper friends tell us how to use this peripherals, link to ADC DMA......

I need to use embedded STM32H573 bootloader to update customer application using UART1 or uart3.I try to use AN2606, but no success. May you provide correct code to jump from application to the embedded bootloader for specific processor model: STM32H573, please?