STM32U585 - Problem with more than one wake up pin in Stop3 mode

[ASavi.3]

Dear all,

I am using STM32U585CIT6Q in Stop3 mode. When one wakeup pin is active, everything works fine, and I can wake up my microcontroller.

But when I want to use two wakeup pins (Two wakeup pins are selected in .ioc file and enabled in code), I can't wake up the microcontroller.

What could be a problem?

Best regards,

Ana

[liaifat85]

Please check if the pins are configured with the appropriate triggering sensitivity (e.g., rising edge, falling edge, etc.).

[ASavi.3]

I don't think that is the problem. The wakeup pins are enabled with functions:

HAL_PWR_EnableWakeUpPin(PWR_WAKEUP_PIN4_LOW_0);

HAL_PWR_EnableWakeUpPin(PWR_WAKEUP_PIN6_LOW_0);

That means that wakeup pins have a low polarity.

When I use one or the other of these wakeup pins, everything works as it should.

Best regards,

Ana

[Sarra.S]

Hello @ASavi.3, 

What pins are you using as wakeup pins?

[ASavi.3]

Hello @Sarra.S ,

I'm using PA2 and PB5