STM32 MCUs Products

Receive and send data with STM32L100RC

Hi, I'm using a STM32L100RC discovery board and I'm trying to send/receive two words (string type) to/from another program not related to the MCU. Nevertheless, the Virtual Com Port (VCP) is not available on this device. Is it still possible to use t...

STM32H7A3 OTP Read Failure with Flash Latency 0 WS

Hi,Are there any restrictions on reading OTP when the Flash LATENCY is configured for 0 wait states, and the AXI clock frequency / VOS are within the required range allowed for such?With an STM32H7A3 with SYSCLK configured to HSIDIV4 (i.e. 16 MHz), V...

Efficient way to process USART-received data and flush RX buffer ?

I have a transmitter over USART and an STM32H7 receiving data. The transmitter always writes N bytes at a slow repetition rate, i.e. every 1 second or more.Once N data are received by the STM32H7, for example using interrupt, the function HAL_UART_Rx...

LSE crystal oscillator startup issue with the STM32H743XIH6

To give you an update to the LSE crystal oscillator startup issue with the STM32H743XIH6, we have made some more investigations and this is what we have found.There was a problem with the software, that we found. If we made a Backup Domain reset befo...

Can not debug STM32L552 Nucleo-144 board

I can not debug STM32L552 Nucleo-144 board with STM32CubeIDE 1.16.1Here is output message from IDE:STMicroelectronics ST-LINK GDB server. Version 5.8.0Copyright (c) 2020, STMicroelectronics. All rights reserved.Starting server with the following opti...

someone know if it possible to change LPTIM source mux while running? for example to change from LSI to PCLK1? LSI is 37Khz and I want the PWM to run in 1khz so I use count 37, but I want to generate more step then 37 and still remain in 1Khz for PWM

What's wrong with this WWDG initialization code?

Based on the info in the STM32 reference manual, I would have thought this code to start up the WWDG would work (after processor reset). // sets up the WWDG with a period of about 1 sec, no lower limit inline void StartWwdg() { LL_APB1_GRP1_EnableC...