https://devzone.nordicsemi.com/f/nordic-q-a/22533/setup-timer-2-interruptI&#39;m trying to setup a 20Hz interrupt for Timer 2: #define number_of_ms 50 void timer_config(void) { NRF_TIMER2-&gt;TASKS_STOP = 1; // Stop timer NRF_TIMER2-&gt;MODE = TIMER_MODE_MODE_Timer; // taken from Nordic dev zone NRF_TIMER2-&gt;BITMODE = TIMER_BITMODE_BITMODE_16Bit;en-USTelligent Community 13Mon, 05 Jun 2017 20:07:48 GMThttps://devzone.nordicsemi.com/thread/88648?ContentTypeID=1Mon, 05 Jun 2017 20:07:48 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5a98f9e2-00fa-4388-b028-acad54c394b6Dzung<p>@RK: your guess is right. The timer is actually 20Hz, and it&#39;s reading data from sensors taking too much time and cause delay. I made the reading much shorter, and now voila it&#39;s 20Hz.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/88647?ContentTypeID=1Sun, 04 Jun 2017 23:28:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7c550ca4-e06d-45c2-88e4-f7b03e357c41Dzung<p>The first column is timestamp: the top box is timestamp from RTC with second resolution, and the bottom box is timestamp of millisecond resolution using millis()</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/88646?ContentTypeID=1Sun, 04 Jun 2017 23:10:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f8c454b4-0bca-466d-a5da-cdae46637174RK<p>what is the output supposed to represent? You don&#39;t show the function in which you&#39;re writing it.</p><div style="clear:both;"></div>