STM32 MCUs Products

STM32 SMBUS - Communication error during block read/write - SDA remains low.

Hi,I'm working on a project with a STM32L475RC and I'm facing problems with the SMBUS.The STM32L475RC is used as a SMBUS/PMBUS Client. As smbus/pmbus stack I use the X-CUBE-SMBUS Expansion Package (AN4502).Now I'm facing problems with block transfers...

Using IDLE Line Detection + DMA on STM32L42x

In my opinion one of the simplest ways to receive an unknown amount of data has been this post which details how to use IDLE line detection to trigger the DMA to call the HAL_UART_RxCpltCallback function. This then reads the data received via UART fr...

I use STM32F030R8T8 programming with CUBE and TrueStudio. I have a problem with the frame error in UART communication on RS485 line. I have implemented the error_callback function to reset the error, but receiving remains blocked.

In a similar question it is recommended to carry out the instructions:void HAL_UART_ErrorCallback (UART_HandleTypeDef * huart){ // I implement this .. but eventually you can decide with different approach // Many macros / proc on this code .. is just...

STM32L496: Unable to go in DFU when use HAL_SPI_Transmit_DMA

Hello guys,I'm not new using DFU but I have this strange problem.When I try to jump in DFU from my code, I get an "Unknown usb device" from my PC.I have also 2 push button in my board. Reset and DFU pin (keep PH3 high ).If I keep pressed DFU button a...

Is here any reason for using HSE crystal with STM32L431 ?

Every L4 board that I've seen had footprint for HSE crystal routed but not populated. As I understand it is because MSI has automatic calibration on LSE clock. In my latest design I did the same - reserved place for HSE but marked it DNP. The 32.768k...

I use stm32h745 MCU cortex-m4. When I increase fdcan initialization, why is the execution time of the program twice as slow? But When I blocked line 608, the program execution time returned to normal.

DMA With Multichannel ADC in STM32F302R8

Hello , I have validated your code & single ADC channel is working completely fine. But when I move for Multiple ADC channel ,I'm unable to read the buffer memory. Can you please guide me through it and feel free to pin point if I'm wrong at some poi...