measuring elapsed time with app_timer_cnt_diff_compute()

RE: measuring elapsed time with app_timer_cnt_diff_compute()

Jonathan Dan — Tue, 20 Jun 2017 12:46:46 GMT

@kerem Eliot is referring to the functions defined in nrf_drv_clock.h (see infocenter.nordicsemi.com/index.jsp

RE: measuring elapsed time with app_timer_cnt_diff_compute()

kerem — Mon, 15 Jun 2015 13:06:45 GMT

I could not quite follow how you get the ticks_elapsed, can we summarize it as after you start the clock with start_clock(void), app_timer_cnt_get(uint32_t * p_ticks) gives you the timer ticks since the clock has started. And dividing p_ticks value by 32k gives you it's equivalent value in seconds?

RE: measuring elapsed time with app_timer_cnt_diff_compute()

Eliot Stock — Thu, 08 May 2014 23:00:27 GMT

Scratch that, this was all down to a silly error in my arithmetic. This does indeed seem to work:

float seconds_elapsed = (float)ticks_elapsed / (32 * 1000);