Single Shot App Timer Draws Much More Current Than Repeated App Timer

[Emile]

Hi!

I've followed the app timer example to implement app timers in my project. My project is low power consumption oriented. When I use a repeated timer, power consumption stay pretty low at about 2 uA. But When I start a single shot timer, power consumption raise at about 500 uA and never goes back to 2 uA. Maybe this is caused by the high frequency clock enabled by a single shot timer? Why a single shot timer would increase power consumption that much vs a repeated timer? What is the issue? I use SDK 16.0.0.

Thank you!

[Kenneth]

Hi,

This does not make any sense no. Are there any other app_timers running here while you are starting the one shot timer? It could be an idea to have a slow "dummy" app_timer running with repeated interval of for instance 200seconds timeout (don't make it longer than 255seconds due to potential overflow issues). This will avoid that app_timer need to start and stop the clock tree if no other app_timers are running.

Kenneth