Hi, I am using STM32WLE5CCU6 MCU and I am trying to enable RTC Wakeup Interrupt. I use HAL_NVIC_EnableIRQ(RTC_WKUP_IRQn) but seems like my code is stuck inside it. Any ideas what can be causing that?

[TDK]

Sounds like it’s stuck in an IRQ handler. Make sure flags are cleared appropriately. Debug your code. Hit pause. See where it’s at.

[Dana Myers]

Do you have an ST/Link ? Relatively inexpensive. Highly recommended.

Dana K6JQ

[EKame.1]

how is it stuck inside IRQ handler? I have printed some logs and It doesn't get out from this HAL_NVIC_EnableIRQ(RTC_WKUP_IRQn)

[EKame.1]

yes I have it

[Dana Myers]

Have you tried running under the debugger, then halting to see what the MCU is doing when it's stuck?

[EKame.1]

I didn't try the debugger but I had logs printed to check where it gets stuck

[Dana Myers]

Use the power tool (debugger) and see if the RTC_WKUP_IRQn handler is storming (repeatedly being called).

[TDK]

You enable an interrupt. Code doesn’t progress from that point. What other explanation would there be?
Debugging is likely to be more fruitful than guessing.

[Subramanya A]

Hi @EKame.1​ ,

Any update for aforementioned issue ? even I faced same issue [https://community.st.com/s/question/0D53W00002DAe0dSAD/stm32wl-rtc-hangs]

Thanks in Advance.