How to get Compare event of RTC periodically?

[Ankush]

Hi,

I am working on RTC sample example in SDK12.0.0. The compare event in it triggers after 3 seconds. In my application I want to trigger the compare event every 10 seconds, without resetting the counter. I need the counter to reset only after overflow event. Is there any way by which I can do this?

[FormerMember]

One way to avoid resetting the RTC is to update the compare value for each RTC compare event: When a compare event occur, you update the next compare value in the compare event handler.

[Ankush]

Hi Kristin,

Thanks for reply. As per your comment, If I update the compare value every time then I will have keep the value as 10 , 20, 30 ... and so on. Is it any other way to get compare event every 10 seconds without updating compare value?

[FormerMember]

Another option is to use the application timer library (app_timer). For how to use it, you can have a look at ble_app_hrs: application_timers_start(..). The app_timer library uses RTC1.