RE: RTC timeout frequency won't change

Håkon Alseth — Tue, 11 Nov 2014 13:35:52 GMT

Hi,

The macro "APP_TIMER_TICKS" takes in two variables, which is the period in milliseconds, and the prescaler for the RTC. This macro cannot give you a lower period than 1 millisecond.

To get a TICK of 400 us (+/- 10%), you should set the "APP_TIMER_PRESCALER" to '0' and start the timer like this:

err_code = app_timer_start(m_app_timer_id1, 13, NULL);

This will give a period of 13 / 32768 = 396.7 us.

Cheers, Håkon