STM32 MCUs Embedded software

Hello, I am trying do a loopback test, i.e I2C1 as master and I2C2 as slave on the same board(STM32F429ZI DISC1).I am giving the address for slave as 0x42 left shifted by one, and storing the same in oar1 register for I2C2. Now the problem is the master is not getting acknowledgement from the slave. I am using HAL to test this.I have also turned on/set the pull up and open drain for both the I2Cs. And i have also tried with external 4.7k ohm resistors, for the pull up resistance. But to no avail.Can somebody please suggest what can i do.

Hello everyone.I am using st32f407 chip to drive ad7606c ADC chip, and I want to output real time graph from PC to matlab via usb.ad7606c outputs busy signal at the end of conversion, and GPIO callback function is executed like below according to busy signal.void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin) { if(GPIO_Pin == BUSY_Pin && dma_busy == 0) { Start_ADC_DMA_Receive(); } }Then the ‘Start_ADC_DMA_Receive()’ function is executed, which is shown below.// Start receiving DMA (call only once, repeat in subsequent callbacks) void Start_ADC_DMA_Receive(void) { dma_busy = 1; //HAL_GPIO_TogglePin(GPIOD, GPIO_PIN_3); // Toggle LEDs for status checking HAL_GPIO_WritePin(GPIOA, GPIO_PIN_3, GPIO_PIN_RESET); // CS LowHowever, if the DMA reception completion callback function is not executed afterward, the PA3(CS) pin output does not go high. The code is shown below.// DMA Receive Complete Callback void HAL_SPI_RxCpltCallback(SPI_HandleTypeDef *hspi) { if (hspi->Instance == SPI1)

Hi,I'm using a STM32L0, the power consume under stop mode was ~50uA. After some search, i see that i forgot to stop the USART clock which permit a consume under stop mode around 20uA which is far from the datasheet <1uA.Actually, i'm doing manual search for clock or GPIO which could drain useless power. I wondered if a library or function already exist which could scan all possibility option which drain power and give information about that. I'm not looking for exact number (it could be nice to have approximation) but more a list of all activate option like :- ADC clock enable- GPIOx under output state- MSI clock at x MhzetcSo i can figure out what i forgot to disable.Thanks in advance,

Hi,I am working on a secure TAMPER application running on STM32H5731I-DK. Tamper module init and config is properly executed for active tamper detection with interruption. The TAMP_MISR register is set as expected once the tamper attempt is discovered, however the TAMP_SMISR is never set. Given that the TAMP_SMISR is used by the TAMP IRQ handler to determine the IRQ origin, the event is never handled correctly.The application is running in a secure context.Is there any reason/explanation why TAMP_SMISR would not be set ?Is there any specific register meant to be set ?Thanks

I tried running the LwIP_TCP_Echo_Server app on the Nucleo Board H7S3L8 (MB1737-H7S3-L8-B02) using STM32CubeH7RS\Projects\NUCLEO-H7S3L8\Applications\LwIP\LwIP_TCP_Echo_Server sample code.The code downloaded fine, but TCP communication didn’t work.I started a DHCP server using Tftpd32 software, but the MCU didn’t get a DHCP IP and showed a static IP (192.168.0.10) instead.I tried pinging the MCU’s static IP from my laptop using a straight Ethernet cable, but it failed.I tested with both crossover and straight Ethernet cables and used a Wi-Fi modem/router as another DHCP server, but the result was the same.I also tried other sample codes (LwIP_UDP_Echo_Client, LwIP_UDP_Echo_Server, LwIP_TCP_Echo_Client, LwIP_HTTP_Server_Raw), but the result was the same.I followed the steps in the Readme file and enabled the XSPI2_HSLV=1 for high-speed I/O.Did I miss any steps? Screenshots are attached for reference. MCU Comm3 serial responsePing request from Laptop to the MCUWireshark packet while

I used the STM32H533 Nucleo board example project ADC_MultiChannelSingleConversion as a reference for this code. The actual project is running on an STM32H523.I am attempting to have a software-triggered array of ADC reads across two channels using the GPDMA. [Edit: for clarification, multiple conversions across a sequence of 2 channels, not just a single conversion]. The plan is to be alerted via interrupt callback that the sequence (triggered by HAL_ADC_Start_DMA) is complete. I do not want the ADC to continue to sample or overwrite the data in the buffer, so I am turning off the ADC in the callback. void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef *hadc) { HAL_ADC_Stop_DMA(hadc); ... }The issue is that this callback is being triggered after every two-channel sequence is completed, instead of once after the DMA buffer is filled.The system does not generate any DMA complete or half complete callbacks in this configuration.Here's what appears to be working:ADC conversions ar

Hi Team,I am working on SIL2/3 compliance project. For this I need to generate and work on LL based libraries instead of HAL libraries.I am using STM32Cube v1.19.0. and working on STM32H753xx and STM32G4A1VET6 series MCU.I am unable to generate LL libraries for FDCAN.Need your help support for generating LL based FDCAN libraries. Regards,Abey  

Hello everyone,I’m working with an STM32H743VIHX and CubeMX 6.13.0-RC5, and I’m trying to capture a square-wave clock on PE9 (mapped to TIM1_CH1) so that each rising edge:Increments the TIM1 counter (External Clock Mode 1 via TI1FP1)Fires a DMA transfer from GPIOE->IDR into a circular bufferInvokes my HAL_DMA_RxHalfCpltCallback() / HAL_DMA_RxCpltCallback()Even though I can see the TIM1 counter increment (and even wrap around), my DMA callbacks never get called.Here’s what I’ve set up:PE9 → AF1 → TIM1_CH1Slave ModeSlave Mode = External Clock Mode 1Trigger = TI1FP1Polarity = RisingChannel 1ICSelection = Direct TI1ICPolarity = RisingFilter = 0DMA1_Stream1 is used for TIM1_CH1NVIC: DMA1_Stream1_IRQn enabledHas anyone successfully used TIM1_CH1 → DMA1_Stream1 on an STM32H7?I’ll attach my full main.cand stm32h7xx_hal_msp.c, files below. Any help would be greatly appreciated!Thank you in advance for your insights.

Hi , I was going through the template_fsbl_xip project located at:     STM32Cube_FW_N6_V1.0.0/Projects/STM32N6570-DK/Templates     However, I noticed that this project does not contain an .ioc file, whereas other examples like GPIO_IOToggle and several others do include one. My question is: Is this an oversight, or was it intentionally left out? If it was intentional, how can I create an .ioc file for this template as I would like to start my project using STM32CubeMX and I would like to use external flash and ram present on STM32N6570-DK board.

Hello,I'm currently working with the Nucleo-STM32H7S3L8 board and attempting to use the XIP_Template from its repository, which I've successfully cloned.I opened the template folder in STM32CubeIDE via "Open projects from a file system," selecting the folder that contains the .xmproject file. Following the official guide, I tried to build the application project, but the debugger returned the following error:No rule to make target '/Users/xxxxxxxxx/Desktop/STM32CubeH7RS/Drivers/STM32H7RSxx_HAL_Driver/Src/stm32h7rsxx_hal.c', needed by 'Drivers/STM32H7RSxx_HAL_Driver/stm32h7rsxx_hal.o'. Stop.Additionally, when I attempt to build the boot project, I encounter more errors, such as:../../../Boot/Inc/stm32_extmem_conf.h:47:10: fatal error: stm32h7rsxx_hal.h: No such file or directory | #include "stm32h7rsxx_hal.hIt appears that stm32h7rsxx_hal.h is not being found, even though it should be included. (I have attached a picture of the error.)I have already performed the following troubleshooti

Hello!I recently bought a OV5640 Adafruit breakout board from here and I was having some issues with using the I2C bus. I downloaded the libraries from the stm32_ov5640 GitHub page. Whenever I run the HAL_I2C_Mem_Write or HAL_I2C_Mem_Read functions, an error is returned. I read online that configuring the registers is needed before reading the chip, but even writing doesn't work. The following is my write register function:static int32_t OV5640_IO_ReadReg(uint16_t DevAddr, uint16_t Reg, uint8_t *pData, uint16_t Length) { HAL_StatusTypeDef status; uint8_t reg_addr[2]; // OV5640 uses 16-bit register addresses (big-endian) reg_addr[0] = (Reg >> 8) & 0xFF; // High byte reg_addr[1] = Reg & 0xFF; // Low byte // Send register address then read data status = HAL_I2C_Mem_Read(&hi2c1, OV5640_I2C_ADDRESS, Reg, I2C_MEMADD_SIZE_16BIT, pData, Length, HAL_MAX_DELAY); // OV5640_I2C_ADDRESS = 0x3C but I tried with 0x3C << 1 and 0x79 if (status != HAL_OK) {

Hello,I am using an STM32H755. I want to read a potentiometer via ADC and transfer the value to a variable using DMA. I have configured everything with CubeMX (ADC1, DMA, channel, sampling time, etc.) and I start the conversion with HAL_ADC_Start_DMA(&hadc1, (uint32_t*)&adc_dma_val, 1).When I use polling mode, ADC works perfectly and I get correct values.However, when I try to read with DMA:The adc_dma_val variable remains 0 and is never updated.The HAL_ADC_ConvCpltCallback function is never triggered.All init functions (MX_DMA_Init, MX_ADC1_Init) are called in the correct order, DMA interrupt handler is active.ADC and DMA clocks are enabled.There seems to be no issue in the code, and the hardware wiring is correct.I have been struggling with this issue for a while. If anyone has experienced a similar problem or has an idea, I would appreciate your help.I am attaching my source code.Thank you!

Hi Team,Currently I am working with FreeRTOS Timers and callback is not firing always.Please note that timer is creating and main application is calling after once osKernelInitialize(); is done. Above are configurations in FreeRTOSConfig.h. Please give a solution why Callback is not firing ? Thanks and Regards,Ramesh   osTimerId_t FreertosTimerHandle; const osTimerAttr_t FreertosTimer_attr = { .name = "FreertosTimer_LED" }; void RPS_print_console_Thread(void *argument) { /* Initialize watchdog Timer */ IWDG_Init(); StartLEDTimer(); while(1) { /* Refresh watchdog periodically */ IWDG_Refresh(); } } void StartLEDTimer(void) { FreertosTimerHandle = osTimerNew(Fire_LED_Toggle, osTimerOnce, NULL, &FreertosTimer_attr); if (FreertosTimerHandle != NULL) { if (osTimerStart(FreertosTimerHandle, 5000) == osOK) { printf("LED timer started\n"); } else { printf("Failed to start LED timer\n"); } } else { printf("Failed to create LED timer\n"); } } void Fire_LE

Hi,    I am trying to jump into system bootloader but board is not getting detected in USB DFU on STM32CubeProgrammer. I tried below two methods:1) By connecting Boot0 pin to HIGH and resetting the board and tried connecting on STM32CubeProgrammer.2) By Jumping to system Bootloader start address from application.In the second method I tried setting option bits manually in software and board got connected in USB DFU for one or two times only.Let me know how can I jump to system bootloader and do application reprogramming.Thanks,Vishwanath Devara  

I am using STM32H573 and I have tried to enable PVD some what like this:void PVD_Init() { PWR_PVDTypeDef pvdconfig; HAL_NVIC_SetPriority(PVD_AVD_IRQn, 5, 0); HAL_NVIC_EnableIRQ(PVD_AVD_IRQn); pvdconfig.Mode = PWR_PVD_MODE_IT_RISING_FALLING; pvdconfig.PVDLevel = PWR_PVDLEVEL_7; HAL_PWR_ConfigPVD(&pvdconfig); HAL_PWR_EnablePVD(); } void HAL_PWR_PVDCallback() { // HAL_GPIO_WritePin(GPIOC, LED_1_Pin, GPIO_PIN_SET); printf("\rBefore RESET COUNT: %.2f\n", counter); EEPROM_Write_NUM(0, 0, counter); }Someone might say to enable the clock but for this module I don't think we need to manually enable the clock. I have looked into it and am pretty sure about it. If anyone else have some other theories please let me know. Also made sure that EXTI 16 is connected internally. 

Hella All, While working with the STM32H533RE microcontroller and using VS Code with PlatformIO for debugging, I noticed that the SCB (System Control Block) peripheral definitions appear to be missing from the SVD file. The SCB is a critical ARM Cortex-M33 core peripheral that should include registers such as:CPUID (CPU ID Base Register) - 0xE000ED00ICSR (Interrupt Control and State Register) - 0xE000ED04VTOR (Vector Table Offset Register) - 0xE000ED08AIRCR (Application Interrupt and Reset Control Register) - 0xE000ED0CSCR (System Control Register) - 0xE000ED10CCR (Configuration and Control Register) - 0xE000ED14And other SCB registers in the 0xE000E000-0xE000EFFF address range The missing SCB definitions limit our ability to:Monitor system control registers during debuggingAnalyze interrupt and exception behaviorDebug power management and system configuration issuesPerform comprehensive system-level debugging I would greatly appreciate your assistance in

Hi All,I’m working on a project with the STM32U5G9ZJT6, where I’ve implemented a bootloader in internal flash at 0x08000000. The application is stored in external OctoSPI NOR flash (MX66LM1G45G), which is memory-mapped to address 0xA0000000 using Octal STR mode.I'm flashing the application binary into external flash using an external loader (.stldr) via STM32CubeIDE.Although the application is successfully stored in external flash, when I try to execute it via memory-mapped mode, it fails (shows “Target Failed” or halts). I’m not sure whether it’s due to memory mapping, stack configuration, MPU, or something else.Could someone guide me on the correct procedure or help me troubleshoot this issue? What I’ve Done So Far:Bootloader:Configured OSPI (HSPI1 / OCTOSPI2) to enable memory-mapped mode using MX66LM1G45G_EnableSTRMemoryMappedMode().Verified that data can be read from 0xA0000000.Read the initial MSP and Reset_Handler from external flash:uint32_t app_msp = *(uint32_t*)0xA0000000

Hi all Do you have any SPi protocol example for stm32f407VGTx board . B.R Ash

IDE : STM32CubeIDE Version: 1.16.1Board : STM32F407VG DISC1SYS Timebase Source : TIM6 Hello,In my project, i use I2C and multiple UARTs. It worked fine before adding FreeRTOS tasks. Recently i need add buttons to my project, so i add a new task to handle interrupts. To synchonize my EXIT ISR (callback) and the button handling task, a binary semaphore is adpoted. Strange things happened, after creating a binary semaphore with xSemaphoreCreateBinary(), all I/Os, I2C and UARTs, are failed. Even HAL_Delay() did not work, bebugger died in HAL_GetTick() in HAL_Delay. all abnormalities happened before starting FreeRTOS kernel and initializing tasks. Commenting the xSemaphoreCreateBinary() system is back to normal. Can someone tell me what causes the problem.

i have created a USBx ramdisk which enumerates with windows and a usb disk is shown. when i look at the properties it is 0bytes in size and wont let me format it.if ULONG USBD_STORAGE_GetMediaLastLba(VOID) and USBD_STORAGE_GetMediaBlocklength are set to0 the USB will enumerates. if they are any other size then the USB wont enumerate. i have attched the design. Any pointers would be great. i will eventually be adding an external SD card inthe design. but just want to get the ramdisk working first. 

Hello everyone,I'm a beginner learning STM32 and working on a small project with the STM32H755 (NUCLEO-H755ZI-Q). I'm trying to use an EXTI interrupt on PA0 (push button) to toggle an LED on PB0 on the Cortex-M7 (CM7) core. I need help to figure out what's wrong!Thanks a lot!

I am currently using STM32H723 MCU for a project. I want to use PTP to synchronise different peripherals that will send data and their timings need to be precisely synchronised. The reference manual has got a whole section for programming IEEE 1588 timestamping. But going through the different files that implement the ethernet driver, I found this comment:    -@- The PTP protocol offload APIs are not supported in this driver. The offload feature is most vital to me. I am wondering whether that is an old message or if this driver still doesn't support hardware timestamping. Has anyone have luck with this??  

Hello,I am currently working on a bootloader code. I successfully managed to execute the app code by copying to the RAM address (0x20000000). However, whenever I try to copy the app code to SDRAM (0xC0000000) instead of RAM, bootloader never executes the app code. In the linker script file of my app, I follow the same process with the "RAM Version" of the code: I used SDRAM address for all sectors (.data, .text, .bss...). My jump code is basically like: uint32_t app_sp = *((volatile uint32_t*)APP_SDRAM_ADDRESS); uint32_t app_pc = *((volatile uint32_t*)(APP_SDRAM_ADDRESS + 4)); SCB->VTOR = APP_SDRAM_ADDRESS; __set_MSP(app_sp); ((void (*)(void))app_pc)(); Thanks.

osTimerId_t FreertosTimerHandle; const osTimerAttr_t FreertosTimer_attr = { .name = "FreertosTimer_LED" }; void RPS_print_console_Thread(void *argument) { /* Initialize watchdog Timer */ IWDG_Init(); StartLEDTimer(); while(1) { /* Refresh watchdog periodically */ IWDG_Refresh(); } } void StartLEDTimer(void) { FreertosTimerHandle = osTimerNew(Fire_LED_Toggle, osTimerOnce, NULL, &FreertosTimer_attr); if (FreertosTimerHandle != NULL) { if (osTimerStart(FreertosTimerHandle, 5000) == osOK) { printf("LED timer started\n"); } else { printf("Failed to start LED timer\n"); } } else { printf("Failed to create LED timer\n"); } } void Fire_LED_Toggle(void *argument) { printf("Timer callback fired!\n"); HAL_GPIO_WritePin(LED0_GPIO_Port, LED0_Pin, SET); HAL_GPIO_WritePin(LED1_GPIO_Port, LED1_Pin, SET); HAL_GPIO_WritePin(LED2_GPIO_Port, LED2_Pin, SET); HAL_GPIO_WritePin(LED3_GPIO_Port, LED3_Pin, SET); }