STM32 MCUs Products

UART timeout in DMA Circular mode.

Hi, I have a question about UART + DMA.I have a sensor that needs to send data to my STM32. When the sensor is stimulated, for the duration of the event, it sends a byte approximately every 1 ms.To receive the data there are no problems, I used DMA a...

STM32H755 Rev. V RDP Error when erasing flash sectors

Hi there, Our application has a firmware update method that begins by erasing flash bank 2 sector by sector before writing the new firmware.RDP level is set to 0, but this shouldn't be an issue as we're only erasing a sector.Occasionally (Maybe 1 in ...

Strange behavior of IDE SW4STM32 in Code Editing and Debugging

I am using SW4STM32 (an Eclipse Variant) to code and debug my firmware, which is based on sample codes in package STM32Cube_FW_F4_V1.26.0.I have observed two strange issue:IDE warns me that "Symbol '***' could not be resolved". However, it has no pro...

Weird LPUART interrupt behaviour

Hi,i write code in bare metal so every time i initialize a project in STM32CubeIDE i do it as an empty project. I made a project for STM32L011K4 and try to initialize the LPUART, in the startup file i can find that the handler for the LPUART1 name i...

I am currently working with an STM32H747XIH6-DISCO and am stuck on how to get my DMA to trigger from an external clock source. I was going to set up a periodic DMA from a timer, but I'd like that timer driven by a 10-ish Mhz external clock. How could I?

DMB() in atomic_fetch_add leads to hard fault if MPU AXI is not cacheable

Hi there,I have got an STM32H7B0 processor.I would like to make a part of the AXI (main RAM of application) not cacheable so I don't need SCB_CleanDCache() before/after DMA write/read transaction.But another part of the AXI RAM should be cacheable an...

How to calculate minimum sampling time for ADC channels using RAIN, CAIN, RADC, CADC hardware value on STM32H7 MCUs ?

STM32F373 SDADC injected sequence using DMA drifts through the data buffer

I am having trouble using the DMA with SDADC. The samples are coming in ok but their sequence in the buffer drifts through it. Anyone can help? i.e. every channel is open to the air except for one input i have a voltage applied. This value you can cl...

How to receive UART data with checksum value in stm32l4r5zi MCU?