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hduffddybz
hduffddybz
Visitor II
July 9, 2015
Question

The serial port connection for stm32f4discovery board

  • July 9, 2015
  • 1 reply
  • 535 views
Posted on July 09, 2015 at 03:28

Hi!I am new to STM32F4Discovery and FreeRTOS,and recently I run FreeRTOS on STM32F4Discovery board,but I found that it is hard to use serial port since there are too many uart pins on this board,so My questions is that how can I successfully connect the ''usb to ttl'' board to Discovery board(You know that B6/B7,A8/A9 all stands for USART1). In addition, I change the value of ''HSE_VALUE'' to 8000000 since the frequency of external crystal is 8MHz.

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    1 reply

    Tesla DeLorean
    Tesla DeLorean
    Guru
    July 9, 2015
    Posted on July 09, 2015 at 03:49

    PA9/PA10 USART1 is not viable due to a capacitor.

    Would suggest USART6 via PC6/PC7

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