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Adams
Associate
April 9, 2021
Question

Wake up pin identify issue

  • April 9, 2021
  • 3 replies
  • 833 views

I use 3 wake up pin PA0,PC5 and PC13 .(MCU part number is STM32L452)

When trigger wake up pin to wake up MCU from the standby mode.

How to identify which WAKE UP PIN is triggered?

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3 replies

waclawek.jan
Super User
April 9, 2021

Which STM32?

JW

Adams
AdamsAuthor
Associate
April 12, 2021

HI,

My MCU part number is STM32L452

waclawek.jan
Super User
April 12, 2021

Read out and check the PWR_SR1.WUFx bits.

JW