How to start and stop a timer in S110?

RE: How to start and stop a timer in S110?

Ricky — Mon, 01 Sep 2014 05:33:35 GMT

thank you!

Nikita — Fri, 29 Aug 2014 09:42:18 GMT

There is macro function for this:

#define APP_TIMER_TICKS(MS, PRESCALER)\
            ((uint32_t)ROUNDED_DIV((MS) * (uint64_t)APP_TIMER_CLOCK_FREQ, ((PRESCALER) + 1) * 1000))

It'll be 32768 ticks.

Ricky — Fri, 29 Aug 2014 09:33:30 GMT

I want to init a timer by using APP_TIMER_INIT(APP_TIMER_PRESCALER, 2, 4, true); but if I set APP_TIMER_PRESCALER to 0, how many ticks equal to 1s ?

Nikita — Fri, 29 Aug 2014 03:18:27 GMT

You can get current timer value by triggering CAPTURE task for any Capture/Compare register.

NRF_TIMER2->TASKS_CAPTURE[1] = 1; // trigger TASKS_CAPTURE for Capture/Compare register 1.
time = NRF_TIMER2->CC[1]; // Get current timer value