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Visitor II
August 15, 2024
Question

Question about UART communication

  • August 15, 2024
  • 3 replies
  • 848 views

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

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    3 replies

    Super User
    August 15, 2024

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

    TDK_0-1723722393119.png

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

    Technical Moderator
    August 15, 2024

    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

    Graduate II
    August 15, 2024

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