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STM32N6 Port P & O pinouts are not functioning

Madhu_S
Associate II

‎2026-05-22 2:36 AM - last edited on ‎2026-05-22 2:38 AM by

Hello ST team,

we are trying to evaluate the simple GPIO pinouts on STM32N6 Nucelo & in our custom board,

we noticed that Port P & O pinouts are not functioning as expected. we just configured as simple GPIO output and tested the pin state always low. 
other GPIO ports look normal, but we will come to know when we do the complete testing.
 
We've cross checked this Port P &O functionality in the Nucleo EVK as well in custom board, but No luck, it is not working in both, could you please suggest, is there any special configurations required to make port P& O functional?

Regards,
Madhu S
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Andrew Neil
Super User

‎2026-05-22 2:40 AM

Maybe this helps: Nucleo H7S3L8: No GPIO output on ports O and P ?

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.
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