RE: Sistick timer extension in nRF5 SDK

Einar Thorsrud — Thu, 04 Apr 2024 12:23:33 GMT

Hi Gianluca,

There is not much you can do with that. However, for the use case you describe I would normally avoid the systick timer. Instead, the allmost all applications use an RTC for the app_timer library, and then you could instead make sure you set APP_TIMER_KEEPS_RTC_ACTIVE to 1 in your sdk_config.h. That way the app timer always runs, and you can use that to keep track of time.

You still need to handle wrap-arounds though, as that is not handled by the app timer. Alternatively, if useing the app_timer2 implementation, you could hook into the internal 64 bit counter, which in practice will never wrap around (see this post).