STM32 MCUs Embedded software

 Hello ST team,I am developing a camera application on STM32N6570-DK + IMX335.The entire capture/display pipeline follows the official DCMIPP_ContinuousMode example:  IMX335 RAW10 → CSI → ISP → PixelPacker RGB565 → LTDC However, the LCD output shows a corrupted pattern like in the attached video:The image reacts to hand movement (so the sensor is streaming), but the content becomes color-shifted, diagonal, and distorted. The pattern matches the behavior when:RAW10 is fed directly into the PixelPacker interpreted as RGB565,meaning the ISP output is never routed to Pipe1. What currently works1. IMX335 is clearly streaming (image brightness changes when covering the lens).2. CSI + Pipe1 receive rea

Hi everyone, dear.I have already managed to generate the necessary strings that represent the html pages, but I need to generate more complex pages. In the example that comes with CubeMX, it simulates a file system. How can I convert a small file structure to these headers?Thanks

Hi ST, i have one question for you. Could you please make "examples" more messy? Is it even possible? Lets see, i believe you can do it even worse. To be honest, i have never saw this nonsense and mess in my life. And i have also worked as ABAP developper. Have you ever heard about rule, that strongly recommends NOT to use "goto"? No? I thought so.Have you ever heard about spaghetti code? Because you created one really huge. That example about UsbX for Stm32u5 is awfull. Who did it? Intern? Student? What is wrong with you? Even renesas is now better than you. 

Hi there,I am trying to add the STM32WL3xx chips to embassy-rs and for that I need to be able to generate the peripheral data. They use the SVD files for that information.I was able to find the SVD files for the STM32WL30, WL31 and WL33, but the ones I found seem to be lacking almost all `enumeratedValue` that are present in the other SVD files I could find of other chips. Instead it seems to be described in the description fields but that it way harder to parse.Are there SVD's available anywhere with the data in a way that is it more parse-able?Kind regards 

I have an other issue at the moment. I cant use the GPIOD, VSSI02 is on 3.3V. Im using stm32g0b1kb. It wont toggle it wont read, it does nothing. I have created a small application far away from my main app just to test the GPIO functions.Hi, I a already Figured it out. But Thank you for the response. I have an other issue at the moment. I cant use the GPIOD, VSSI02 is on 3.3V. Im using stm32g0b1kb. It wont toggle it wont read, it does nothing. What am I missing.I cant toggle, read or write them? PB9 PB6, and PD1 to PD3/* 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 b

Hello!I am facing a problem when trying to connect to a remote server using NetXDuo and MQTT. We have a cloud service with which we want to establish a connection so we can send some data. I am basing my project on the example from the STMH573 MQTT Client. The exact problem I am facing is that when trying to establish the connection using the username and password, and the certificates an error occurs, when trying to secure connect. I get these two TSL alerts - alert level is 0x2 and alert value 0x28 (secure connection failed to be established). Using TLSv1.2.What I did:Converting CA certificate to the header file format openssl x509 -in ca.crt -outform DER -out ca.der # Then convert into the header file format using xxd.exe xxd.exe -i ca.der > ca.cert.h​Converting client certificate to the header file format open

On an existing, working project developed with stm32cubeide 1.19.0 and the stm32h743zit developed with azrtosh7 3.3.0 that uses usbhs as the host for msc and midi devices, I need to add usbfs channel management to connect hid and midi, but I'm having significant problems configuring the system with stm32cubemx. I haven't found any examples online that support both USB channels. Has anyone tried using both USB channels and can give me some advice? During testing, I found that creating code from stm32cubemx 6.15.0 with both USB channels has many problems. I had to make some manual changes to the code created because it starts running, but only partially works.

Hi everyone, I’m debugging an SMBus issue between an STM32H7, an LTC4100 Smart Charger, and an RRC2054 Smart Battery. I’m trying to write to the ChargingVoltage() register (command 0x15), but the SMBus frames captured on the logic analyzer appear corrupted and often contain NACKs or unexpected STOP/START conditions. My write function is:   static HAL_StatusTypeDef SMBUS_WriteWord(PSMBUSDESC pSMBUSDesc, uint8_t addr, uint8_t cmd, uint16_t value) { HAL_StatusTypeDef status; uint8_t buf[3]; buf[0] = cmd; buf[1] = value & 0xFF; // LSB buf[2] = (value >> ‌‌ & 0xFF; // MSB status = HAL_SMBUS_Master_Transmit_IT( pSMBUSDesc->SMBUSinst, addr << 1, buf, sizeof(buf), SMBUS_FIRST_AND_LAST_FRAME_WITH_PEC ); while (HAL_SMBUS_GetState(pSMBUSDesc->SMBUSinst) != HAL_SMBUS_STATE_READY); return status; }

Hello, I’m working with an STM32H723 MCU and have a question about Flash behavior when caches are enabled.Both D-Cache and I-Cache are enabled, and I’m not using any additional MPU configuration. I'm using D-Cache invalidate after a Flash erase operation.Do I also need to invalidate the D-Cache after a Flash write? Below is my current code. The D-Cache invalidate is commented out.everything works fine, but I want to prevent any potential issues in the future. static int32_t flash_write_words(uint32_t addr, uint32_t *data) { volatile uint32_t *flash = (uint32_t *)addr; const uint32_t num_words = FLASH_NB_32BITWORD_IN_FLASHWORD; // check erased for (uint32_t i = 0; i < num_words; i++) { if (flash[i] != 0xFFFFFFFFU) { return -1; } } // write words if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_FLASHWORD, addr, (uint32_t)data) != HAL_

Hello!I try to use dual bank option on the stm32l476 (256kB) for implementing a custom bootloader. I want just read new program (bin) by custom protocol and write it to another bank. After that I want to switch the banks, reset mcu and start the new program (from another bank). Sounds easy!My actions:I built the program for bank1, load it to the address 0x08000000.Then I loaded the same program to the bank 2 by address 0x08020000. (either with the st-link utility or just by writing to the flash directly from my program, tried both of variants).After that I set option byte bfb2 from 0 to 1 (also either with st-link or just from program). But my mcu does not work at all.I`ve compared the program in both banks and original .bin file with the help of the st-link utility and found that there is no difference between it (no corruption during program).I`ve even tried to build program for bank

generally i use cubemx choose cubeF1,but the  hal driver in github is ahead of official website,for example lateset version of cubef1 is 1.8.6.however hal driver has updated later for bug fix. so if i want to use the newest hal driver,i need download form github,and replace it in local repository. it is ok?

  Hi everyone, I am working on an STM32G4 project using the HRTIM1 peripheral. My goal is to generate a burst of exactly 3 PWM pulses on Timer A and Timer B simultaneously, triggered by an External Event (Sync Input / EEV). The Goal: System waits for an external trigger (e.g., from TIM3 via TRGO or physical pin). Upon trigger, HRTIM Timer A and Timer B start. They output exactly 3 PWM cycles. They stop and wait for the next trigger (Single-Shot Retriggerable). The Configuration: I am using STM32CubeIDE and HAL, but I also tried direct register access. Master Timer: Acts as a dummy/pass-through for synchronization. Timer A & B: Mode: Single-Shot Retriggerable. Prescaler: Div1. Period: 1000 ticks. R

Hi STM32 community, I have ordered those the Evalboards: NUCLEO-G0B1RE X-NUCLEO-SNK1M1 - USB Type-C Power Delivery Sink  I have followed all of your existing applications, but none of the had lead to an similar result as displayed by your application descriptions. Lets stick to the newest one:(24) How to build an USBPD Sink application using the X-Cube-TCPP software pack - YouTubeI followed every step accurately several times now, but the result is always the same, Contract -> DEFAULT 5V no current. What am I doing wrong? I have studied all of your AN, watched all Videos, read and did the Wiki but never got any positive result as described..... Im frustrated and hoping for your hel

GOAL To use Ethernet + LwIP on the STM32H743 chip without cache. Explanation We don't want to use the cache when using Ethernet because when the cache is enabled and data is sent and received via DMA on the SPI line, the correct data doesn't propagate to the bus due to a cache miss. Disabling the cache resolves this issue, which is why we prefer not to use the cache when using Ethernet. Cube Versions: STMCubeIDE v1.18.1  STMCubeMX v6.14.1 STMCubeFW_H7 v1.12.0 We used the settings in the following link to configure the project by @Adam BERLINGER 's project: h

I am working on a simple mp3 player project and have spent a few days on the Spirit library, as offered by ST.This comes in a binary (.a) form only lib_mp3decoder_cortex_m4_v2.2.0.a and has apparently been built for soft floats, using some weird mode where they drive the FPU directly - the "VFP reggister arguments" thing. My project uses the FPU for a lot of stuff, and since you apparently cannot mix these floating modes at link time, I get these errorsSearching online finds a 2021 reply from ST on same topic, where ST say the Spirit company no longer exists so they can't help. But the website is still there, so I emailed them. I got a reply, surprisingly:They don't support users, so I need to contact ST, to which I replied that I am not a car manufacturer, and I am happy to give them some money for a cortex-m4 lib which is actually usable :)Lots of

I’m working on a project with the Nucleo-L476RG. I want to perform a measurement, then put the microcontroller into Sleep Mode for 2 seconds, after which it should be woken up by the RTC clock.I followed the tutorial:How to configure the RTC to wake up the STM32 from Low Power modesUnfortunately, Sleep Mode is entered but not exited properly.Down below are my project settings:

I am trying to setup FreeRTOS for the new STM32N6 Nucleo board. Running into the following error `GCC/ARM_CM55_NTZ/non_secure/port.c:1814: undefined reference to `__privileged_sram_start__'`.Based on https://github.com/STMicroelectronics/x-cube-freertos/blob/main/Projects/NUCLEO-N657X0-Q/Applications/FreeRTOS_MPU/README.md#notes, it looks like I am missing some linker files. The example itself has it defined at https://github.com/STMicroelectronics/x-cube-freertos/blob/main/Projects/NUCLEO-N657X0-Q/Applications/FreeRTOS_MPU/EWARM/stm32n657xx_ax

Hi All,I'm using STM32G4 with TIM1 for motor control. The BKIN hardware protection works correctly - when I pull the BKIN pin (PB10) low, the motor stops, and when high, it runs again with AOE enabled. However, the break interrupt never fires and HAL_TIMEx_BreakCallback is never called. I've verified that TIM1_BRK_TIM15_IRQHandler exists in stm32g4xx_it.c, NVIC is enabled. The break flag never gets set even though BKIN is functioning. What could prevent the break flag from being set while the hardware break feature still works?I want to print diagnostic using BKIN callback routing but it doesn't work.I've attached IOC timer configurations.Best regards

I believe there's a bug in the stm32h7rsxx_hal_dma code for dealing with repeated blocks in interrupt mode. This bug probably exists in other STM32H7 devices as well.With a typical repeating transfer, in *NON* interrupt mode, the DMA transfer completes successfully, and the DMA state ends up in HAL_DMA_STATE_READY, ready for another request. All is well.However, in interrupt mode, the DMA transfer completes successfully (all data is correctly transferred), but querying the DMA state in the DMA Transfer Complete callback, you'll get HAL_DMA_STATE_BUSY. In fact, it will remain in this state forever.Looking at the stm32h7rsxx_hal_dma.c code, the block starting at 1154 ("Transfer Complete Interrupt management"). There are really only two cases where the HAL_DMA_STATE_READY can be set:1) LinkedList mode (not relevant to us)2) "Normal transfer" where CBR1 == 0. (i.e. not a repeating block transfer) In a repeating transfer, CBR1 contains the repeating confi

Hello,I am new to STM32F746-Disco and I was trying to develop an application starting from TouchGFX.It went all good in developing a touchGFX app and use the generated .ioc and so on to configure a project but I've tried afterwards to configure the ethernet stack LWIP and so on but I was never able to communicate and ping the ethernet device.I've tried on my local to run the ethernet example and I was able to properly ping the device but never been able to do it in the project configured with touchGFX.The strange thing is that I can partially see some comunication such as ARP messages and so on but then the ethernet stack is not capable to reply to ping message. here a snapshot of the communication between my PC and the st board.

I'm re-using a sequential I2C library that worked on a couple other ST devices with different I2C devices, but it doesn't work on a STM32F030.They are functions for I2C register operations, where we always start with a write with the register address and then a write/read, depending on the operation: // Read register HAL_I2C_Master_Seq_Transmit_IT(peripheral, address, &registerAddress,1, I2C_OTHER_FRAME); HAL_I2C_Master_Seq_Receive_IT(peripheral, address, data,size, I2C_OTHER_AND_LAST_FRAME); // Write register HAL_I2C_Master_Seq_Transmit_IT(peripheral, address, &registerAddress,1, I2C_OTHER_FRAME); HAL_I2C_Master_Seq_Transmit_IT(peripheral, address, data,size, I2C_OTHER_AND_LAST_FRAME);The write doesn't work (read works fine). The first call to HAL_I2C_Master_Seq_Transmit_IT is successful, but not the second.

Hello,I am working on a custom board based on the STM32H747 to develop a Touchgfx application as User Interface, where I am using the same QSPI Flash device as the STM32H747I-EVAL kit (MT25TL01G 1Gbit), but with a different chip-select pin wiring.On the STM32H747I-EVAL board, the external loader (MT25TL01G_STM32H747I-EVAL.stldr) is configured to use:QSPI_BK1_NCS (PG6) as the common chip-select for both banks.On my custom board, the MT25TL01G device is wired as:QSPI_BK2_NCS (PC11) as the common chip-select for both banks.I updated my firmware, CubeMX configuration, pin assignments, and the QSPI initialization, and QSPI is now working correctly inside my application firmware.However, STM32CubeProgrammer cannot flash the external QSPI because the supplied stldr file still expects the original chip-select pin (P

Hi STM Devs!I would like to introduce a thread scheduling library - SuperTinyKernel (STK).Its GitHub repo: https://github.com/dmitrykos/stkYou can check capabilities in detail on GitHub but briefly STK can:Soft and hard real-time support: STK supports cooperative scheduling for “soft real-time” tasks, you can also enable hard real-time mode (KERNEL_HRT) for periodic tasks with guaranteed deadlines.Static and dynamic tasks: Define all tasks at startup (KERNEL_STATIC) or allow tasks to be created and destroyed at runtime (KERNEL_DYNAMIC).Low-power friendliness: STK puts MCU into a low-power mode when there are no runnable tasks (task calls Sleep).Tiny footprint: Minimal C++ abstra

I think I have found a bug in the mentioned file (in my case the file comes from x-cube_azrtos-h7, but the problem seems to be present in other versions to).In the function fx_stm32_sd_driver() there is a check that the passed Databuffer (media_ptr→fx_media_driver_buffer) is 4 Byte alligned, if this is true then the function sd_read_data() uses directly the passed buffer otherwise it uses a local scratch buffer. But after the DMA the function needs to invalidate the cache (by calling invalidate_cache_by_addr), on the Cortex M7 a cache line is 32 Byte.This may overwrite data in the cache out side of the buffer.Correction:Set use_scratch_buffer to false only when fx_media_driver_buffer is 32 Byte aligned and a multiple of 32 Byte.

Hello,This is a general suggestion that I would like to make. While I think it's great that all HAL libraries are available on GitHub, I would like to suggest creating a github release for the official versions in addition to creating tags. This can be done on GitHub with just a few clicks. The reason for this is the use of component analysis platforms such as Dependency Track, which make it possible to automatically track the libraries used, a task that is becoming increasingly important. Unfortunately, Dependency Track requires a release in order to track the version. While it is also possible to track this using the commit ID, for example, a release would be the better approach here. I welcome feedback and the possible realization of this suggestion.For Example ARM is doing this with their CMSIS Package: https://github.com/ARM-software/CMSIS_5-Hannes