Question about UART communication

OFN · ‎2024-08-15

Hello everyone,

I am using the b-g4743-dpow1 discovery kit and I am trying to perform UART communication. However, the board does not output the UAR output to the computer. Currently, I can read the observe the UART output through oscilloscope, the output is just not shown on serial port utility on pc. May I ask how should I connect the board to pc (USB, Type-C? I am not sure how to connect) and is there anyway I can solve the issue? Thanks a lot

TDK · ‎2024-08-15

UART/VCP connections are on PG14/PG9. Are those the pins you are using?

Make sure you are opening the correct COM port, and that baud rate and other settings are consistent.

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Peter BENSCH · ‎2024-08-15

If you do not use a UART-USB converter and want to communicate with the PC via USART3, this is realised via the embedded ST-LINK/V3. The ST-LINK/V3 can be accessed via the micro-USB socket.

The USB-C socket is for direct access to the USB port of the STM32G474RE and for UCPD communication.

Hope that helps?

Good luck!
/Peter

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BarryWhit · ‎2024-08-15

and if you are using a USB-Serial cable, make sure you connect RX pin cable to TX pin of board and vice versa.

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