STM32 MCUs

I am working on BLE OTA with the STM32F401RE. I am encountering an error, and I’m attaching a screenshot below. Please take a look and let me know what the issue might be.

Originally posted in TouchGFX Forum - moved & merged with duplicate.Hi,I am working on the STM32F439 development board. I am creating a test.csv file and logging data using FATFS on an SDIO SD card. I can view the data through USB MSC on a Windows PC. However, when I open the file in .csv format or edit some data from the PC, and then reconnect the board to the PC, the data gets corrupted or changes.Does anyone know about this problem? If so, please help me.Thank you!Best regards,Pankaj

Hello,I'm using the ble_ota bootloader that I have adapted to the STM32WB55CGU package and it advertise fine at power up and boot the app correctly but when I’m resetting from app the bootloader is stuck at the ble stack initialization (SHCI_C2_BLE_Init function) waiting for the CPU2. I need to turn off power to recover. Am I missing something?  

Hi Team,We are using STM32G431RBT6, we have tested the ADC1 for PA3 i.e. Channel4 with external Vref 3.3 and VDDA 3.3 with 12-bit selection and the reading we are getting with 5 to 10 counts fluctuations we are seeing but when we have changed to internal voltage ref selection for 2.048 then the PA3 i.e. Channel4 is fluctuating more than 1000 counts! but it works fine for PA0!VDDA remains same 3.3v for both our internal and external voltage.Please suggest us how to resolve this?? Thanks 

Hi everyone,I'm currently designing a custom board based on the STM32F722, and I came across something I need clarification on.According to the STM32F722 datasheet, there is no device listed in the UFBGA176+25 package. However, when searching online (Buy STM32F722IEK6 - ST Online Store), I found a part labelled STM32F722IEK6.Unfortunately, I can't seem to find a dedicated pinout or ballout diagram for this specific part.I'm assuming that since the package is UFBGA176+25, the pinout would be similar (or identical) to that of the STM32F723xx series with the same package.If that assumption is correct, would it also mean that the power supply scheme should follow the STM32F723 diagrams? (i.e., including pins like VDD12OTGHS, OTG_HS_REXT, etc., which

Hello,i have problems to install the ST MC Workbench (x-cube-mcsdk_5.3.3). If i want to install the file, i get the an error:Error Opening file for writing:C:ßProgram Files(x86)\STMicroelectronics\MC_SDK_5.3.3\Middlewares\ST\MotorControl\MotorControl_Config.xmlCan anybody help me?

Hi everyone,I have a program with UART communication using interruption and SPI communication using DMA. I realized that when I send a lot of data through SPI, sometimes I get the DMA error code in UART, but I didn't enable DMA in serial. As far as I know UART and SPI are unrelated, so I don't think that the DMA configuration in SPI is affecting UART communication.Has anyone else experienced similar issues or have some clues?I am writing in both SPI1 and SPI2 a buffer with 100 bytes every 50 milliseconds using the following function:HAL_SPI_Transmit_DMA(&hspi1, bufferSPI1, BUFFER_SIZE_SPI1);Below, I provide the configuration of UART and SPI:UART configuration:void HAL_UART_MspInit(UART_HandleTypeDef* huart) { GPIO_InitTypeDef GPIO_InitStruct = {0}; RCC_PeriphCLKInitTypeDef PeriphClkInit = {0}; if(huart->Instance==USART1) { PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USAR

Hi all. I have encountered one ADC sampling problem in STM32H743. When the signal's amplitude is large, the ADC works fine. However, when the signal's amplitude is low, there are many jitters that I don't want. What happens here? How to fix it? Many thanks.Settings: ADC 12bit, clock PLL2P20MHz, asynchronous clock mode divided by 1, sampling time 2.5 cycles, DMA circular mode，timer 2 trigger.Timer2 prescaler 1-1, counter period 200-1, clock 200MHz.Fig.2

Hi,In the past we've always produced 'release' firmware for STM32F4 which checks the RDP level (memory read / debug protection) at boot up, and ensures it's automatically set to RDP1 (read protection enabled). This ensures that our code can't be easily read out of the device by 3rd parties, but if necessary I can connect a debugger, reset the option bytes (which performs a full erase), and reprogram the chip. This works well. We also have our own secure bootloader which deals with encrypted firmware updates and which is well supported by our production equipment and staff.I'm now working on porting a design to STM32H523, which has an enormously more complicated security system.What I've figured out so far is that:- I think the closest behaviour it's capable of would be to have TrustZone disabled, to set a password for Debug Authentication, and to have the product in the "CLOSED" state when shipped.- This would ensure the product is read protected,

Moved from the Feedback forum.The Feedback forum is not for product questions. Hello, I have been trying to update my STM32 using a WinPE image. I created a c++ application that implements the CubeProgrammer_API. The application runs fine, but when I try getDfuDeviceList(&dfuList, 0xdf11, 0x0483), it does not find any DFU device. (Note that the application works well on a normal Windows 11 installation) I tried downloading the STM32Bootloader driver using the C:\Program Files\STMicroelectronics\STM32Cube\STM32CubeProgrammerV2.19\Drivers\DFU_Driver\Driver\STM32Bootloader.inf file and pnputil /add-driver STM32Bootloader.inf /install command, but it still does not find the device. I tried listing the usb devices using devcon. It can find the STM32Bootloader USB device and the driver. I also tried using dfu-util, but when I try to list the devices with d

Moved from MPUs section - not an MPU question.Error in initializing ST-LINK device. Reason: No device found on target.  I  dont understand the problem can someone help me , i used jumpers on J7 and J8  and still the problem presists how can i fix it ! , this is my first time using such a board and it is still  new 

I am using output compare with TIM3 on a STM32H755 I am able to use Output Compare to generate a single pulse on pin PC7 using TIM3, Channel 2.I am using Active Level on Match.I call HAL_TIM_OC_Start(&htim3, TIM_CHANNEL_2) onceAfter 0.5s, it detects a match (which is good), and my pin drops and stays low (I have negative polarity set).However,  I can find no way to restart the process.I have tried resetting the timer calling HAL_TIM_OC_Stop(&htim3, TIM_CHANNEL_2) and HAL_TIM_OC_Start(&htim3, TIM_CHANNEL_2), but the pin remains low. I've even tried calling the initialisation code again. I assume I am missing something fundamental here? Settings: (see screen shot attached )Auto-reload preload: DisableMode: Active Level on Match

Hello everyone, I am a first-year university student. I am developing a GUI application on the STM32U585 using TouchGFX Designer and FreeRTOS, and I have encountered some issues. Due to my lack of experience, I would like to ask for your advice on how to solve these problems. Here is my GitHub repository for the code(https://github.com/weixuna/GPDMA_AMOLED_). Device information:MCU: STM32U585CIU6RTOS: FreeRTOSGUI: TouchGFXIDE: STM32CubeIDEGPDMA enabled

Is there any information for the STM32H735-DK on how to configure the S70KL128 HyperRAM to work?Unfortunately, there's no source code for the binary demo from ST, so I'm forced to try to get the HyperRAM working somehow.And the forums only provide information about problems when trying to run it in memory-mapped mode.So far, I haven't been able to read or write a single byte because:- The access times, latency times, and the clock in the STM32H7 must be set correctly for the HyperRAM to be accessible at all.- The settings in the HyperRAM itself also need to be configured (DDR/DTR, drive strength, latency, burst length).When creating a new project with the default values ​​in the STM32CubeIDE for the evaluation board, adjust the octospi clock to 100MHz (PLL2R) and attempting to read the hyperram with the debugger, the only output is:Could not halt device (18)Failed to read all registers from targetTarget is not responding, ret

Hi Team,I am new to SBSFU, and our team requires two image examples. To reduce boot time, I need to eliminate the complete swap region, and I am currently working on this.I will flash the SBSFU binary, including only the SBSFU application, using the user button to update the firmware from a local download.After the download, I will decrypt the data and attempt to start the application from the download slot.Could you please suggest the best approach to eliminate the swap region?Regards,Rahul

I am working on a custom board and I have noticed that whenever the device resets, it becomes unresponsive.The reset causes that hang the microcontroller:Calling NVIC_SystemReset from firmwareHaving firmware stuck and receiving a signal from IWDGManually grounding the NRST pin.The debugger shows that the program starts running in a lop at addresses 0x1FFF2XXX, which would be a RAM stack, I suppose?..My FW memory map looks like this:MEMORY { RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 64K RAM2 (xrw) : ORIGIN = 0x10000000, LENGTH = 16K BOOT (rx) : ORIGIN = 0x08000000, LENGTH = __boot_size FLASH (rx) : ORIGIN = 0x08000000+LENGTH(BOOT), LENGTH = __program_size FLASH2 (rx) : ORIGIN = ORIGIN(FLASH)+LENGTH(FLASH), LENGTH = __program_size DATA (rx) : ORIGIN = ORIGIN(FLASH2)+LENGTH(FLASH2), LENGTH = __data_size }My USER_VECT_TAB_ADDRESS is defined a

Hello,I am using the Nucleo-STM32F411RE development board and require support for cryptographic functions, particularly ECC Point Generation.input: w0, N output: Y, y Begin generate random scalar y on chosen curve Y=y×G+w0×N (G as defined NIST P-256) return Y endTo achieve this, I downloaded the X-CUBE-CRYPTOLIB v4.3.0 package, But I could not find any API's suitable for above operations like (ECC scalar multiplication or addition) which are very basic operations in ECC algorithm.Could anyone please help me with suggestions are feedback.Best regards,Akash M@Imen.D Please help.

Hi everyone,I am working on an STM32F412RB-based project where I need to secure data stored on an SD card while maintaining fast accessibility. However, I have very limited flash memory available (only 40 KB free), so I need a lightweight encryption method that does not consume too many resources.Current Setup:MCU: STM32F412RBSD Card Interface: SDIOFile System: FATFSEncryption: None implemented yetRemaining Flash Memory: 40 KBQuestions:What are some efficient lightweight encryption methods for securing SD card data on STM32 with minimal resource usage?

Hello, I have an STM32G474VEH6 and we have the main function running a code at 20kHz that takes almost all the period to be executed. We also use ADC and PWM synchronised to convert at the period start. Now we also have to read a 64bit SPI slave in master "read only" mode. As far as I know, I need to generate a dummy TX to start the transmission. The SPI slave has a transmission has a minimum timeout after every transmission of 13.5us and the maximum clock frequency is 5MHz. Since we want to increase the 20kHz frequency as much as possible, we would like to avoid overloading the CPU using the DMA for this. We would like to do something like use a timer to trigger the transmission and the DMA can save the RX data in a circular buffer. Our main function is going to take the last updated value, but it does not need to be synchronised. So, we only need a buffer of one single value of 64bit. I have been trying many ways to do it, but I do not get to tri

I have a build error where the call to MX_TouchGFX_Init(); in main.c (generated by Cube MX) is different than the one in app_touchgfx.h  UINT MX_TouchGFX_Init(VOID *memory_ptr);, also generated by CubeMXI am using TouchGFX 4.19.1 in Stm32CubeIDE 1.9 Did anybody ran into that? Any suggestion?build console output:../Core/Src/main.c: In function 'main':../Core/Src/main.c:135:3: error: too few arguments to function 'MX_TouchGFX_Init' 135 |  MX_TouchGFX_Init();   |  ^~~~~~~~~~~~~~~~In file included from ../Core/Src/main.c:29:../TouchGFX/App/app_touchgfx.h:45:6: note: declared here  45 | UINT MX_TouchGFX_Init(VOID *memory_ptr);   |   ^~~~~~~~~~~~~~~~make[1]: *** [Core/Src/subdir.mk:59: Core/Src/main.o] Error 1

Hi,I've tested freertos when trustzone is enabled, the freeRTOS can work.I've tested PSA API in "TFM_Appli\NonSecure" when freertos not used, also can work.When I try to access PSA API in "TFM_Appli\NonSecure", when freertos is used, it will trigger MCU reboot.Please advise how to access PSA API in "TFM_Appli\NonSecure" when free rtos used."uint8_t TRU_TRNG(uint8_t *aucRand, uint8_t ucNumOfByte) {psa_status_t status = PSA_SUCCESS; status = psa_generate_random(aucRand, ucNumOfByte);if (status != PSA_SUCCESS)return FAIL;elsereturn 0;}" 

Hello,I built a simple HTTP webservice with an F4,Following the code provided by this tutorial made by ControllersTechSTM32 ETHERNET #6. HTTP SERVER PART 1 || Simple Webpage - YouTubeIt works well.Now I want to secure it without adding FreeRTOSWould be possible to implement MbedTLS without FreeRTOS?Is there different ways to secure my webserver? Not using FreeRTOS is a requirement for my project. Thanks for your helpBest regard

I’m looking for comprehensive materials and guides on setting up BLE P2P router profile for STM32WB55 microcontroller.I need more detailed instructions than those provided in the official documentation (https://wiki.st.com/stm32mcu/wiki/Connectivity:STM32WB0_Peer_To_Peer_Router). I require a step-by-step guide or course on configuring data transfer between three devices via an intermediate node.System configuration:Sensor board - a board with a resistive sensor that sends dataController board - a board with a mini vibration motor, responsible for data conversion from the first board and further transmission to the PCPC - receives data from the first two devices using a standard BLE dongle. A simple GUI has been developed here to monitor system operation.The peculiarity o

Hi all ,I’m currently using the EVSPIN32G development board to run six-step trapezoidal commutation.I’m using Motor Pilot version V1.2.12 with the MC_6STEP GUI.In the ST Motor Control tutorial under '6-step - Optimization and troubleshooting of sensor-less firmware parameters,' I saw several phase voltage (BEMF U/V/W) waveforms. However, in Motor Pilot I can only find 'bus voltage' and 'bemf_ADC_conf'—I don’t see any options related to viewing BEMF U/V/W voltages directly. Could you please advise how I can access these waveforms, or if there’s an additional setting or tool needed to display them?

Hello, I am trying to use SPI with the STM32H7A3RGT6 microcontroller to send and receive data. However, I am not sure if I have created my functions correctly, or if I have properly configured the registers to achieve full-duplex SPI functionality. Here are my codes:Header files.   /** spi.h** Created on: Apr 23, 2025* Author: HP*/ #ifndef INC_SPI_H_#define INC_SPI_H_ #include "stm32h7a3rgxx.h"#include <stdint.h>void SPI3_gpio_init(void);void SPI3_init(