Exactly, but even after removing this function from my code, the behavior remains unchanged (same current value).

I have monitored the CDSTOP signal to verify if the system enters Stop 3 mode. It operates as expected: when the core enters Stop 3 mode, the "CDSTOP is set", and when the core wakes up, the "CDSTOP is cleared".Regarding HAL_NVIC_SystemReset(), it is...

Hello @TNaum, I have ported an example for STM32U545RE "Stop 3 mode with RTC Timer wake-up". The applicative part is functional (Go to Stop 3 and wake-up with RTC Timer, check the IRQHandler when interrupt occurs). But as you mentioned, the current r...

Hello TNaum,To wake-up the system from Stop 3 low-power mode, it is mandatory to redefine PWR_S3WU_IRQHandler (From NVIC table) to handle the interrupt request, then clearing wake-up flags. The following code describes the function which must added t...