RE: Setting nrf_drv_timer into single shot mode

Jarmo — Thu, 25 Aug 2016 10:27:37 GMT

It seems that using NRF_TIMER_SHORT_COMPARE0_CLEAR_MASK | NRF_TIMER_SHORT_COMPARE0_STOP_MASK does the thing in the extended_compare function.

Stefan Birnir Sverrisson — Wed, 24 Aug 2016 15:03:29 GMT

Hi Jarmo

To make a singleshot timer, I think you could just call nrf_drv_timer_compare function instead of nrf_drv_timer_extended_compare function.

The nrf_drv_timer uses TIMER peripheral which runs on 16MHz clock, it is relatively high current and accurate.

The app_timer library uses RTC peripheral timer in the background, which runs on 32kHz clock. It is low current but not so accurate.