STM32WB07CC: unable to obtain the wakeup source.

[xxyyhhmm]

Hello, everyone,
I am currently working on a project using STM32WB07CC. During the design of low power consumption, I found that when waking up the MCU from the deepstop mode through the wakeup pin, it is impossible to obtain the wakeup source by accessing PWRC->SR1&SR3. However, when waking up through the RTC, it is possible to obtain the source. After referring to the demo provided by ST, I also discovered the same issue.
I hope everyone can help me solve this problem.

thank.

[Imen.D · Accepted solution]

Hello @xxyyhhmm ,

Check the GPIO configuration and verify that the wakeup flags are being checked and cleared correctly.

I recommend you follow these articles :

• STM32CubeWB0: Low-power management
• STM32WB0 device debug and access in low-power mode