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

Miche03
Associate

‎2024-12-11 02:33 AM - edited ‎2024-12-11 02:33 AM

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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Andrew Neil
Guru

‎2024-12-11 02:54 AM

@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".

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