PWM outputs
If PWM outputs for backlight & buzzer were connected to LETIM0_OUTx pins, then the watch could go into EM2 sleep mode with PWM outputs enabled. Now the OS has to wait until backlight & buzzer are turned off in order to switch to EM2.
If PWM outputs for backlight & buzzer were connected to LETIM0_OUTx pins, then the watch could go into EM2 sleep mode with PWM outputs enabled. Now the OS has to wait until backlight & buzzer are turned off in order to switch to EM2.