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Visitor II
December 11, 2024
Question

Loopback on PA0 and PA1 to assign as GPIO on STM32UC585 QFN48

  • December 11, 2024
  • 1 reply
  • 540 views

Hi 

For a basic test to verify the hardware of my PCB is OK, i want to make a loopback between PA0 and PA1, I see on the stm32u585ci doc that PA0 can not be configure as simple GPIO (PA1 is possible)

It is correct?

 

Thank you.

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    1 reply

    Super User
    December 11, 2024

    @Miche03 wrote:

    I see on the stm32u585ci doc that PA0 can not be configure as simple GPIO (PA1 is possible)

    It is correct?


    No, I think you're misinterpreting that table:

    AndrewNeil_0-1733914354414.jpeg

    Those are Alternate Functions (hence "AF") - ie additional (or "alternate") things that the pin can do besides being a "simple GPIO".

    When not configured with an AF, all pins function as "simple GPIO".