[request] ArduinoLowPower wakeupReason support

[davereese]

Summary

Hey there, I am working with one of those new XIAO MG24 microcontrollers, and I've noticed when waking from deep sleep, there is no way to tell the device how it was awoken. It looks like the wakeupReason method available in the Arduino Low Power library is not available. Why?

Thanks

[grobasoz]

I use the get_system_reset_cause function...

Serial.printf("Wakeup Cause %08lX\r\n", get_system_reset_cause());

Actual causes are in efr32mg24_emu.h

[davereese]

use the get_system_reset_cause function.

Nice! When I try that it seems no matter how it wakes up, the value is the same. 4 to be exact. So not sure this one will help with what I'm trying to do. It would be really cool to be able to know which interrupt caused the wake up. Like maybe which pin, or if it was the IMU or something.