STM32 MCUs Embedded software

No SMBus support for STM32L152?

Hi, according to the Reference Manual and the Datasheet of the STM32L152 the I2C cores are supposed to support SMBus. However, there are no HAL drivers for SMBus for this MCU. If I configure the I2C cores as SMBus in CubeMX, CubeMX will generate Init...

I would like to know for USB device driver why there is a need for INF file(VID & PID info) and digitally signed cat files with this CMSIS Middleware based USB drivers and why these are not needed for stm32cubemx GUI based USB hal drivers.

I have the following couple of questionsQUESTION :1) what is the difference between USB drivers in the cubemx standard hal library middleware and CMSIS USB Middleware based on the following 2 cases?CASE:1)  In STM32CUBEMX, When I use STM32 standard H...

Are I2C_START and I2C_STOP commands included in HAL_I2C_Master_Transmit and HAL_I2C_Master_Receive commands?

I am using ​HAL_I2C_Master_Transmit and HAL_I2C_Master_Receive commands to read device ID of various sensors. I wrote a simple code to do that. It works for some sensors (e.g. MCP9800, HDC1080). But it doesn't work for some other sensors (e.g MLX9016...

priority interrupt

hi I am handling two different interrupts:- tim3 interrupt- gpio external interruptnow I want gpio external interrupt to have a higher priority than tim3 and that can also interrupt tim3 ....How can set i? HAL_NVIC_SetPriority (EXTI15_10_IRQn, 0, 0);...

Why small USB message is divided into two packets?

Hello,I am using STM32CubeMX to config STM32H743 for CDC class.When I analyze the data I get on the PC I notice the following1-Some small messages are Splitted into two packets2-when I send Several messages in series some messages are missed, but whe...

My STM32L053 draining the battery after USB disconnect when in deep sleep mode???

void HAL_PCD_SuspendCallback(PCD_HandleTypeDef *hpcd) { /* Inform USB library that core enters in suspend Mode */ USBD_LL_Suspend((USBD_HandleTypeDef*)hpcd->pData); /*Enter in STOP mode */ /* USER CODE BEGIN 2 */ if (hpcd->Init.low_power_en...

STM32L4 FreeRTOS+FatFs+SD f_open() throws FR_DISK_ERR in application startup hook but not in any other tasks

I am using an STM32L475VG on the B-L475E-IOT01A discovery board. I am running into a strange problem where whenever I try to create a file within a task it throws back FR_DISK_ERR every time, but succeeds within the startup hook or within the main() ...

Where / how can I learn peripheral configuration procedures?

I'd like to know if there are any resources that say "to set up the DMA to transfer data from the ADC to a memory location, these steps must be completed" or "to set up PWM output on a pin, these steps must be completed" These are two examples of thi...

How does HAL_ok command help in programming