STM32 MCUs Embedded software

Hi,Master：MCU: stm32h743iiIDE:keilQuestion：There is a 32M external SDRAM, and the scatter file is as follows:LR_IROM1 0x08000000 0x00200000 { ; load region size_region ER_IROM1 0x08000000 0x00200000 { ; load address = execution address *.o (RESET, +First) *(InRoot$$Sections) *(_drv_set_) .ANY (+RO) .ANY (+XO) } ... EXT_SDRAM 0xC0000000 0x2000000 { ; RW data *.o(ext_sdram) } }Suppose there are some variables in the program that are specified to be located in 'ext_sdram' section.static lv_color_t buff1[1024 * 600] __attribute__((used, section("ext_sdram"))); static lv_color_t buff2[1024 * 600] __attribute__((used, section("ext_sdram"))); ...During the scatter file loading, these variables will be initialized. Therefore, the external SDRAM needs to be initialized before the scatter file loading, as shown below:Reset_Handler PROC EXPORT Reset_Handler [WEAK] IMPORT SystemInit IMPORT __low_level_init IMPORT __main LDR R0, =SystemInit BLX R0 LDR R0, =__low_level_init B

Hi STM community,I’m working on a project with an STM32L031K6 paired with a Fujitsu FRAM MB85RC256V and an SHT31-D temperature/humidity sensor (on a breakout board). Both peripherals are on the I²C bus PB7 = SDA, PB6 = SCL.I’m trying to test the setup using Tera Term, but I’m not seeing any UART output at all — even though I’ve added print statements. No text appears on the terminal.Here’s what I’ve tried so far:1. Verified that my code reaches the print statements; I added edge cases and test prints.2. Confirmed my pinout configuration: PB7 → SDA, PB6 → SCL with pull-up resistors connected to 3v3 rail.3. Enabled USART2 with TX = PA2, RX = PA15, and ensured the global interrupt is enabled with priority 0.4. Enabled I²C communication.Despite these steps, I’m still not getting any serial output.Has anyone encountered a similar issue on the Nucleo-L031K6 where USART2 over the ST-Link Virtual COM Port does not show output in Tera Term? Any suggestions or troubleshooting steps would be grea

Hi everybody,On my project, my µC receives data from a rapsberry pi on a serial bus.For another project, I've used this method : https://github.com/MaJerle/stm32-usart-uart-dma-rx-tx/blob/main/projects/usart_rx_idle_line_irq_F4/Src/main.c to receive data with unknown length, it was working very well.So, i'd like to use the same thing, but I have something that I don't understand.For my test, Raspberry in sending the following frame every 10s ("DATA RASPBERRY"). My buffer has 64 bytes.The following line gives me the position of cursor : pos = ARRAY_LEN(buffer_rx_dma_rs1) - __HAL_DMA_GET_COUNTER(huart->hdmarx);So, the first time, it gives me 14, the second time 28 and the third time  32 (instead of 42), but 32 is the half of 64.When I take a look on the values, ARRAY_LEN(buffer_rx_dma_rs1) = 64 and __HAL_DMA_GET_COUNTER(huart->hdmarx) = 22, but pos = 32, how is it possible that the substract operation is false ?

NUCLEO-F411REI am trying to read data from a ADXL1002Z.I have set up my board to use PA1 (A1 on the Arduino header) as ADC1_1/* adc.h */ #ifndef INC_ADC_H_ #define INC_ADC_H_ #include <stdint.h> void pa1_adc_init(void); uint32_t adc_read(void); void start_conversion(void); #endif /* ADC_H_ */ and...#include "stm32f4xx.h" #include "adc.h" #define GPIOAEN (1U<<0) #define ADC1EN (1U<<8) #define ADC_CH1 (1U<<0) #define ADC_SEQ_LEN_1 0x00 #define CR2_AD0N (1U<<0) #define CR2_SWSTART (1U<<30) #define CR2_CONT (1U<<1) #define CR1_EOCIE (1U<<5) #define SR_EOC (1U<<1) void pa1_adc_init(void) { /***Configure the ADC GPIO pin ***/ /*Enable clock access to GPIOA*/ RCC->AHB1ENR |= GPIOAEN; /*Set the mode of PA1 to analog*/ GPIOA->MODER |=(1U<<2); GPIOA->MODER |=(1U<<3); /***Configure the ADC module***/ /*Enable clock access to ADC */ RCC->APB2ENR |= ADC1EN; /*Conversion sequence start*/

I have followed the article (https://community.st.com/t5/stm32-mcus/how-to-create-a-project-for-stm32h7-with-ethernet-and-lwip-stack/ta-p/49308#memory-layout ) to get it working for ethernet but I am facing hardfault. In H7S3L8 I am using AXI-SRAM at address 0x24020000 for ethernet buffers and lwip and configuring this sram as non cacheable, non bufferable and shareable at level 1 I am getting hardfault. I is related to memory but I am not able to resolve it. Any help me to find where is the  problem?  Linker file is shown below /* ****************************************************************************** ** ** @file : LinkerScript.ld ** ** @author : STM32CubeIDE ** ** Abstract : Linker script for STM32H7Sxx Device ** 64Kbytes FLASH ** 456Kbytes RAM ** ** Set heap size, stack size and stack location according ** to application requirements. ** ** Set memory bank area and size if external memory is used ** ** Target : STMicroelectronics

Hello, I’m working on a project with an STM32F446RE where I read data from a CAN bus at 500 kbps (CAN1_RX0) and also use I2C to control an MCP4725 DAC, plus timers and DMA for other tasks. The problem: When I test CAN alone, it works perfectly — I can receive all messages from my device (a motorcycle inverter). When I run the full code with all peripherals connected and active (CAN + I2C + TIM2 + DMA), the CAN stops receiving after a short time, or doesn’t receive at all. On the motorcycle, this happens consistently, but on the bench with CAN only, it works fine. What I tried so far: Set CAN NVIC priority higher than other interrupts:   Confirmed CAN1_RX0_IRQHandler() calls HAL_CAN_IRQHandler(&hcan1). Reduced I2C timeout to avoid blocking (HAL_I2C_Master_Transmit with 2 ms instead of HAL_MAX_DELAY). Tried opening the CAN filter (mask = 0) to receive all IDs for debugging. Enabled HAL_CAN_ErrorCallback  Despite all these changes, when all peripherals ar

Hi All,I am writing a code to generate an PWM at output. I want to drive an H-bridge outside.All initializations I have done.I am using TIM1 (advanced timer) for this purpose. I am using STM32F Discovery Board (Microcontroller is STM32F407) and STM32CubeIDE 1.19.0  The issue I am facing is whenever I get an interrupt i tried to load value from the LUT but its not working and generate unexpected PWM at output but when I load any fix value then PWM is generated at the output.I am wondering why it is not generating the PWM from LUT.below is my code. kindly tell me what I am doing wrong volatile uint16_t sineIndex = 0; #define SINE_TABLE_SIZE 10 uint16_t sineTable[SINE_TABLE_SIZE] = {400, 657, 794, 746, 537, 263, 54, 6, 143, 400}; int main(){ HAL_Init(); System_Clock_Source(); UART2_Init(); MX_GPIO_Init(); MX_TIM1_Init(); // Here all the settings are done related to PWM timings MX_TIM2_Init(); SPWM_Start(); } void MX_GPIO_Init(void) { GPIO_InitTypeDef GPIO_InitStr

Will ST's ThreadX versions available through CubeMX and on ST's Github eventually be derived from the Eclipse ThreadX project rather than Azure RTOS? Such as...https://github.com/STMicroelectronics/x-cube-azrtos-h7https://github.com/STMicroelectronics/stm32-mw-threadxDoes ST have a plan to transition their middleware to use sources and licenses from Eclipse ThreadX?

Hello everyone, I’ve recently acquired two STM32H747I-DISCO boards to experiment with USB High-Speed host functionality, specifically using the ux_host_hub_hid_msc example (v3.3.0) provided in the STM32CubeIDE. My goal is to test the Mass Storage Class (MSC) capability, specifically writing a file to a USB flash drive. However, after flashing the example to either board, the USB device is not detected when I insert the pen drive, and LED7 on the DISCO board turns on immediately. According to the reference manual, LED7 should light up green when the ULPI PHY detects a USB connection and the board is acting as a host. In my case, this LED turns on even before connecting any USB device. Also, this function writes a pin that is not set in the FW (GPIO Pin 5 Port H): /** * @brief Drive VBUS. * state : VBUS state * This parameter can be one of the these values: * 1 : VBUS Active * 0 : VBUS Inactive * @retval Status */ void USBH_DriverVBUS(uint8_t state) { /* USER CODE BEGIN 0 */ /* USER

Here is the board images I want to access onbord EMMC using usb cable on to my laptop to uplode some file in 4-GB EMMC storage.Kindly share step to access EMMC.

Hello Team,I'm using STM32H573I-DK for our application. I'm using MCUBoot application on Zephyr project directory to setup a secure boot and firmware update on this DK.I created a RSA key ( cd zephyrproject\\bootloader\\mcuboot, python ./scripts/imgtool.py keygen -k mykey.pem -t rsa-2048 ). I'm using this key in prj.conf of both the bootloader and application.In Application part I modified device tree to add partition to the flash memory. I'll share conf file, editted DTS below.   chosen {        zephyr,console = &usart1;        zephyr,shell-uart = &usart1;        zephyr,sram = &sram1;        zephyr,flash = &flash0;        zephyr,code-partition = &slot0_area;        zephyr,canbus = &fdcan1;        zephyr,display = &st7789v;    };&flash0 {    partitions {   

There are a bunch of CVEs for ThreadX, NetX, and USBX dealing with remote code execution in versions below 6.2.1 (with some pretty scary vulnerability scores) and fixed in 6.3.The distribution in the STM32Cube system is 6.2.0 today, and I was wondering if the ThreadX support people have the latest distribution integration on their stack?Thanks,Andrei

I am trying to get USB High Speed running on my board, In the USB Core Soft Reset function, my code keeps on getting stuck in the do while loop that I have shown below. I have went through all the forum posts related to this and there has been no solution that has resolved this issue. The microcontroller series on this board is STM32U5A5RJT6. I would appreciate any guidance. Thank you!  /* Core Soft Reset */ USBx->GRSTCTL |= USB_OTG_GRSTCTL_CSRST; do { count++; if (count > HAL_USB_TIMEOUT) { return HAL_TIMEOUT; } } while ((USBx->GRSTCTL & USB_OTG_GRSTCTL_CSRST) == USB_OTG_GRSTCTL_CSRST); return HAL_OK; } 

I am trying to communicate to a e-paper display of waveshare 1.54inch v2 with B-WL5M-subg1. I have used the  program file the company has provided but there is no respone in the module. I have tried using esp32 and the module works fine with it. both esp32and stm32 uses same program file while checking with logic analyzer both mcu  show similar data format. But why isnt it working with stm32. I have attached the program for referense if there is any suggestions or solutions I would like to know.

Dear ST,I'm developing a project to send ADC data via USB high-speed to an external device (PC) with STM32H7S78-DK. I'm trying to establish communication via USB, but I'm having trouble with the CDC_Transmit_HS function, which always returns busy. Additionally, the callback CDC_TransmitCplt_HS() is never called, and the USBD_CDC_DataIn() function is not invoked. The hcdc->TxState = 0 is always different from 0. I don't understand why it is happening.The USB init, I think it is ok, because I can identify it at an external computer with the correct description and 480 Mbit/s of USB High speed.These are my configurations of USB:The Global Interrupt for USB is also available.This is the clock configuration:  This is my code at the main, I just developed a code to send "hello" every second, and if it is Busy, it will print an increment value on the LCDThis is my  USB init function:Do you know what the solution can be to the CDC transmission issue with USB high-speed d

Hello,I'm working with a RAK3172 based on STM32WLE5CC chip.I'm using Zephyr RTOS and trying to use the power management features.I've an uart communication, when CONFIG_PM=n, everything works well. When setting CONFIG_PM=y, I don't receive any data.I've configured, the lsi, hsi, pll and rcc in my dts file.I've tried a bunch of configuration, but impossible to get power management to work alongside uart.I just have the following code: int main(void) { while (1) { gpio_pin_toggle_dt(&gpio_led0); printk("Hello, World from main!\n"); k_msleep(1000); } return 0; }Thanks for the help

Hello,I just created a default project with the nucleo board template and with VCP initialized, how can I transmit data via UART using the VCP?

Having faced the same problem, ended up in this thread. This is the same for HAL_SPI_Receive_DMA() as well, because it internally calls the transmitReceive function. So, it made me enable tx dma interrupt as well rx. Why on earth I have to enable tx dma when I just need rx dma? It does not even call the tx complete callback. My workaround was to: 1-make tx dma interrupt priority higher than rx dma interrupt. 2-poll for tx dma complete in rx interrupt routine before proceeding to next transaction. void HAL_SPI_RxCpltCallback(SPI_HandleTypeDef *hspi) { handleXferCplt(hspi); } void HAL_SPI_TxRxCpltCallback(SPI_HandleTypeDef *hspi) { handleXferCplt(hspi); } bool handleXferCplt(SPI_HandleTypeDef *hspi) { // stm hal forces to use both tx and rx dma becasue it calls tranmitReceive() internally for receive. // however, dma tx transfer complete interrupt comes after rx complete. So, tx dma busy flag is still set and queued // sessions cannot proceed. so wait for it to finish. this i

What should I pay attention to when I use stm32u5 FreeRtos stop2,When exiting stop2, do the relevant i2c spi adc uart peripherals need to be reinitialized?Is the value retained?Is there a routine for FreeRtos stop2?void Bsp_PowerManage_enter_stop_mode(void) { if ((device_state_info.stimulate_state) || (device_state_info.device_ota)) { return; } osKernelLock(); / while (__HAL_UART_GET_FLAG(&hlpuart1, USART_ISR_BUSY)); while (__HAL_UART_GET_FLAG(&hlpuart1, USART_ISR_REACK) == RESET); __HAL_RCC_LPUART1_CLKAM_ENABLE(); __HAL_RCC_LPTIM1_CLKAM_ENABLE(); HAL_UARTEx_EnableStopMode(&hlpuart1); device_lowpower_state.stop_mode_state = 1; HAL_SuspendTick(); // #if Bsp_IWDG if (HAL_LPTIM_TimeOut_Start_IT(&hlptim1, 61438) != HAL_OK) { Error_Handler(); } #endif HAL_PWREx_EnterSTOP2Mode(PWR_STOPENTRY_WFI); SystemClock_Config(); HAL_InitTick(TICK_INT_PRIORITY) if (!__HAL_PWR_GET_FLAG(PWR_FLAG_STOPF)) Error_Handler(); __HAL_PWR_CLEAR_FLAG(PWR_FLAG_STOPF); if (__HAL_PWR_GET_FLAG(PWR_FLA

Hello,I’m using a CAT24C32-D EEPROM. It works on our STM32F446-based PCB, but I can’t get it to work on our STM32U5A5-based PCB. I’m encountering both write and read errors. I’m using the same driver/library on both MCUs, and the hardware is identical except for the MCU itself.What could be causing this? Why am I seeing these issues on the STM32U5A5 while the STM32F446 works fine? Any help would be appreciated.

HelloI have a few questionsSituation Summary:Development board: STM32F411RESensor: VL53L4CD TOF sensorPrevious successful case: On the STM32F401RE board, setting the BOOT0 pin to 1 → uploading the BIN file via STM32CubeProgrammer → sensor operation verified successfully via GUI.Current issue (STM32F411RE board):Setting BOOT0 the same way as on the F401 → STM32CubeProgrammer connection is lost.Using the adjacent JP1 pin (instead of the originally used one) → BIN file download succeeds.Running the GUI program → board and COM port not detected.Running "FLASH FW" in the GUI → port is detected, but the sensor shows a "not detected" message.Note: Both the F401RE and F411RE boards use the JP1 pin next to the board’s power pins as the BOOT pin.Question: What is the recommended method to make the sensor work properly with the GUI on the STM32F411RE board? I would appreciate any guidance you could provide on this issue.Please find my email address below.thanks  email : whtndhks@it

SVD version 1.2, vs RM0468 Rev 3TIM1 CCR6 register is mislabeled as CRR6 in the SVD file

SVD version 1.2, vs RM0468 Rev 3SVD file lists DMAMUX2 as DMAMUX3 in multiple places

Hi, I'm using STM32H743 with STM32Cube FW_H7 V1.12.1 library package.I'm using LwIP without RTOS and our application is working well. In order to improve performance we would like to use the transmission in interrupt for the etherrnet interface instead the polling transmission.I saw that in the ethernet_link_check_state function in ethernetif.c file it is used the  HAL_ETH_Start_IT(&heth), but in the low_level_output used to transmit data is used HAL_ETH_Transmit() insted of HAL_ETH_Transmit_IT().Is it possible to use the HAL_ETH_Transmit_IT() in order to improve performance?What we need to modify in order to use the HAL_ETH_Transmit_IT() insted of HAL_ETH_Transmit()?Thanks in advance.Regards

SVD version 1.2, vs RM0468 Rev 3The SVD file is missing the following IRQ numbers OTG_HS_EP1_OUT_IRQn     = 74, OTG_HS_EP1_IN_IRQn     = 75, OTG_HS_WKUP_IRQn      = 76, OTG_HS_IRQn         = 77, RNG_IRQn          = 80, BDMA_Channel0_IRQn     = 129, BDMA_Channel1_IRQn     = 130, BDMA_Channel2_IRQn     = 131, BDMA_Channel3_IRQn     = 132, BDMA_Channel4_IRQn     = 133, BDMA_Channel5_IRQn     = 134, BDMA_Channel6_IRQn     = 135, BDMA_Channel7_IRQn     = 136, ECC_IRQn          = 145, DTS_IRQn &n