CAF LED blinks on wake up event

[zhangxka]

Hi,

I use CAF LEDs with PWM. I have a timer that would make device wake up every 20 seconds with a CONFIG_CAF_POWER_MANAGER_TIMEOUT to make it sleep 2 seconds after waking up.

Every time the system wakes up from sleep, the LED will be turned on for a brief moment before turning off again, and I think it is because of the code below. This happens even though I manually turn off LEDs on a system wake up. Is there any way to prevent the blink from happening (either through my code or modifying the source code)? 

https://github.com/nrfconnect/sdk-nrf/blob/main/subsys/caf/modules/leds.c#L207C32-L207C32

Best,

Kevin

[bicanoff]

I had a similar problem with blinking after every wake-up from sleep. In my case, I set CONFIG_CAF_LEDS_PM_EVENTS=n to solve this problem. (NCS 2.6.1)