1ms tick function with system clock 16MHz ?https://devzone.nordicsemi.com/f/nordic-q-a/348/1ms-tick-function-with-system-clock-16mhzI made code like to below for using 16Mhz system clock. /* Start 16 MHz crystal oscillator */ NRF_CLOCK-&gt;EVENTS_HFCLKSTARTED = 0; NRF_CLOCK-&gt;TASKS_HFCLKSTART = 1; /* Wait for the external oscillator to start up */ while (NRF_CLOCK-&gt;EVENTS_HFCLKSTARTEDen-USTelligent Community 13Mon, 09 Sep 2013 10:11:47 GMTRE: 1ms tick function with system clock 16MHz ?https://devzone.nordicsemi.com/thread/1834?ContentTypeID=1Mon, 09 Sep 2013 10:11:47 GMT137ad170-7792-4731-bb38-c0d22fbe4515:81a8c86e-acd0-4776-b13d-b760584eba2cH&#229;kon Alseth<p>Hi,</p> <p>For setting up a TIMER or RTC with a 1 ms interval, please see the examples &quot;rtc_example&quot; and &quot;timer_example&quot; in the SDK. They are not directly setup with this interval, but that can be changed by adjusting the values for CC-registers.</p> <p>If you want the 16M to source the 32kHz RTC, then this can be set in register &quot;NRF_CLOCK-&gt;LFCLKSRC&quot;</p> <p>Best regards Håkon</p><div style="clear:both;"></div>