UART Communication Issue

VGani.1 · ‎2023-10-13

Hi,

I am using G474RE nucleo board and I want to communicate between the UARTs available on the board (UART2,UART1 and UART3). Message is not transmitting complete in to UART1 from UART2 and same with UART3 from UART1

Imen.D · ‎2023-10-13

Hello @VGani.1 ,

I advise you check the UART clocks and content of UART registers when the issue occurs.

Please share more details when code hangs.

Did you use UART example with STM32CubeG4 package? this may help you on your implementation.

I recommend you the following articles which contain a list of examples about STM32 UART DMA RX/TX:

FAQ: STM32 HAL UART driver - API and Callbacks -

Imen

When your question is answered, please close this topic by clicking "Accept as Solution".
Thanks
Imen

View solution in original post

Imen.D · ‎2023-10-13

Hello @VGani.1 ,

I advise you check the UART clocks and content of UART registers when the issue occurs.

Please share more details when code hangs.

Did you use UART example with STM32CubeG4 package? this may help you on your implementation.

I recommend you the following articles which contain a list of examples about STM32 UART DMA RX/TX:

FAQ: STM32 HAL UART driver - API and Callbacks -

Imen

When your question is answered, please close this topic by clicking "Accept as Solution".
Thanks
Imen

TDK · ‎2023-10-13

Probably a code bug. Note that you need to start the receive operation prior to starting the send operation.

If you feel a post has answered your question, please click "Accept as Solution".

Karl Yamashita · ‎2023-10-13

Show your code so we can see how you're trying to communicate to each UART.

Don't worry, I won't byte.
TimerCallback tutorial! | UART and DMA Idle tutorial!

If you find my solution useful, please click the Accept as Solution so others see the solution.