https://devzone.nordicsemi.com/f/nordic-q-a/71436/nrf52832-timer-running-fastDoing development on nRF52 DK board using buttonless DFU example and SDK 17.0.2. Running SES on Win10 and gnu compiler. I&#39;ve set up a 1 mS timer to run timing in my main loop. I find that it runs too fast by about 0.7%. This is unacceptable in my applicationen-USTelligent Community 13Tue, 09 Feb 2021 15:27:46 GMThttps://devzone.nordicsemi.com/thread/293601?ContentTypeID=1Tue, 09 Feb 2021 15:27:46 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d937b377-2e9c-4f55-846b-67e4d4af6288Don<p>Got it.&nbsp; Thanks!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/293599?ContentTypeID=1Tue, 09 Feb 2021 15:13:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:05adc1a3-56a5-4c13-bf70-b6dc61c689eeKenneth<p>Good to hear that solved the problem. FYI: The BLE will start and stop the HFCLK to save current consumption, so if the application need a accurate HFCLK is need to manually request it if it should stay ON all the time.</p> <p>Best regards,<br />Kenneth</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/293583?ContentTypeID=1Tue, 09 Feb 2021 14:22:30 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f9f44a5e-fffc-485a-8b7c-82f05e566635Don<p>That seems to have done the trick!&nbsp; Thanks.</p> <p></p> <p>I&#39;m confused though.&nbsp; How could the Bluetooth work if the clock is wrong?&nbsp; I just verified that without that call, I can connect on BT while the clock is too fast.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/293575?ContentTypeID=1Tue, 09 Feb 2021 13:53:07 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f3ba8eaa-bb03-47a0-b565-69da2b8635e0Kenneth<p>Can you try to call sd_clock_hfclk_request() after enabling the softdevice to ensure that you have a accurate clock.</p> <p>Kenneth</p><div style="clear:both;"></div>