https://devzone.nordicsemi.com/f/nordic-q-a/65296/apptimer-stop-workingHello. I am doing a small project where nrf52 reads data from a BME280 temperature sensor via SPI and sends it using ESB. I have no experience with radio, so I use a ready-made module HOLYIOT-17029 with nRF52832 and PA 2401C. The device is runningen-USTelligent Community 13Mon, 31 Aug 2020 07:39:23 GMThttps://devzone.nordicsemi.com/thread/267135?ContentTypeID=1Mon, 31 Aug 2020 07:39:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:de0c41bd-cc72-425b-8d6b-40a69682b2d0Einar Thorsrud<p>Hi,</p> <p>You will never get any timeout with the app timer unless you have an active LF clock source (LFRC or LFXO), as that is the clock source for the RTC peripheral. I cannot say what happened before, but perhaps you have made changes to your clock configuration inadvertently, or perhaps you misinterpreted something while debugging previously?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/266949?ContentTypeID=1Fri, 28 Aug 2020 10:14:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:956202bb-6018-49d1-a85d-26c3ea60cea8D233374<p>Yes you are right, thanks, that fixed the problem.<br />But how could it even work without a selected clock source? The problem did not appear immediately, but after a while.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/266736?ContentTypeID=1Thu, 27 Aug 2020 12:27:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3f4ed793-bbea-44ae-833a-5b9b9b3277e3Turbo J<p>I don&#39;t see a 32.768kHz crystal on that module picture, so <span class="pl-en">CLOCK_CONFIG_LF_SRC</span> <span class="pl-c1"></span> should probably be set to 0 (zero).</p><div style="clear:both;"></div>