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Thread: Use from SWD and UART interface on the same port P0.14 and P0.15 at the same time

  1. #1
    Beginner Beginner Matrix is on a distinguished road
    Join Date
    Sep 2017

    Use from SWD and UART interface on the same port P0.14 and P0.15 at the same time

    Hi guys,

    After reading a lot of papers and webpages I'm a little confused. Question: Can I use the swd interface and the UART interface at the same time with BMI = SWD0? The goal of this would be to communicate over the UART while the firmware is been debug.

    uC = XMC1302

    Thank you in advance


  2. #2
    Beginner Beginner Howard73 is on a distinguished road
    Join Date
    Feb 2019
    I am not sure this is possible but I have the exact same question so tagging along here in case somebody replies.

  3. #3

    Infineon Employee
    Infineon Employee
    jferreira will become famous soon enough
    Join Date
    Oct 2012

    It is not possible. Once you decide to go with BMI=SWD0, the pins will be used exclusively for the debug interface.
    An alternative would be to use the BMI=SPD0/SPD1 and use the remaining pin to implement UART in half duplex mode.

    The views expressed here are my personal opinions, have not been reviewed or authorized by Infineon and do not necessarily represent the views of Infineon.

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