https://devzone.nordicsemi.com/f/nordic-q-a/62922/nrf51-rtc-interrupt-not-occurringHi! I&#39;m configuring RTC on nrf51822. I&#39;m setting up the LFCLK and RTC module by configuring their registers. I have set up a simple IRQ handler, but it seems that it never happens to execute. What can I be missing? This is my source code:en-USTelligent Community 13Fri, 26 Jun 2020 12:28:53 GMThttps://devzone.nordicsemi.com/thread/257134?ContentTypeID=1Fri, 26 Jun 2020 12:28:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7206b507-8e42-4393-b1e0-f2e3d95ada12damianb50<p>That&#39;s it! I forgot to place</p> <div style="background-color:#1e1e1e;color:#d4d4d4;font-family:Consolas, &#39;Courier New&#39;, monospace;font-size:14px;font-weight:normal;line-height:19px;white-space:pre;"> <div><span style="color:#9cdcfe;">NRF_RTC0</span><span style="color:#d4d4d4;">-&gt;</span><span style="color:#9cdcfe;">TASKS_START</span><span style="color:#d4d4d4;">&nbsp;=&nbsp;</span><span style="color:#b5cea8;">1</span><span style="color:#d4d4d4;">;</span></div> </div> <p>in rtc config function.</p> <p>Accessing peripherals directly on a low level gives me much better feeling of control on what&#39;s happening in my program. Also I don&#39;t have to import so many of libraries and dependencies to perform a simple task.</p> <p>Thanks a lot for the hint!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/256861?ContentTypeID=1Thu, 25 Jun 2020 10:05:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f548a4c9-8e62-4f58-a6b9-d43dc97bd1c7Susheel Nuguru<p>Where are you starting the RTC peripheral? why are you not using <a href="https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v12.3.0%2Fgroup__nrf__drv__rtc.html&amp;resultof=%22%6e%72%66%5f%64%72%76%5f%72%74%63%5f%69%6e%69%74%22%20">nrf_drv_rtc_xxx </a>API instead of accessing the RTC directly?</p><div style="clear:both;"></div>