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VGani.1
VGani.1
Associate III
October 13, 2023
Solved

UART Communication Issue

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 

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Imen.DBest answer
ST Technical Moderator
October 13, 2023

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:

Imen

In order to give better visibility on the answered topics, please click on 'Best answer' on the reply which solved your issue or answered your question. Thanks
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3 replies

Imen.DBest answer
ST Technical Moderator
October 13, 2023

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:

Imen

In order to give better visibility on the answered topics, please click on 'Best answer' on the reply which solved your issue or answered your question. Thanks
TDK
TDK
October 13, 2023

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
Karl Yamashita
Principal
October 13, 2023

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

If a reply has proven helpful, click on Accept as Solution so that it'll show at top of the post.CAN Jammer an open source CAN bus hacking toolCANableV3 Open Source
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