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mjenabzadeh9
mjenabzadeh9
Associate II
September 24, 2016
Question

Using SWDI and PA13 simultaneously

Posted on September 24, 2016 at 14:24

Hello

I'm new with St.

is it possible to use SWDI pin for programming and simultaneously

using as GPIO ?

best regards

 
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    3 replies

    Tesla DeLorean
    Tesla DeLorean
    Guru
    September 24, 2016
    Posted on September 24, 2016 at 15:16

    You aren't really programming and running the code at the same time, right?

    If you want to use PA13 in your application you can do so, don't expect to use it for debugging at the same time. Use other methods to debug/diagnose the application.

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    mjenabzadeh9
    mjenabzadeh9Author
    Associate II
    September 25, 2016
    Posted on September 25, 2016 at 07:08

    Hello clive

    I just want to use this pin as GPIO  and when ever i need to program my

    uc use this pin as pin of  SW 

    not debugging . 

    Tesla DeLorean
    Tesla DeLorean
    Guru
    September 25, 2016
    Posted on September 25, 2016 at 14:40

    You need to provide a sufficiently long window to allow the debugger to connect, or provide access to NRST and/or BOOT0 so the code doesn't execute.

    You also need to think about what else you have connected electrically to the pin. Having you app use it to drive a GPIO attached LED would work. As a input driven by some other board logic, not so much.

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