https://devzone.nordicsemi.com/f/nordic-q-a/26124/why-does-my-saadc-hang-on-calibrationHello, I am having an issue with my SAADC, it seems to hang while calibrating. The flow of my app is as follows, on my main the SAADC is started with saadc_start() , where a calibration happens and I don&#39;t get a hanging. Afterwards on the handler ofen-USTelligent Community 13Tue, 24 Oct 2017 13:21:01 GMThttps://devzone.nordicsemi.com/thread/102951?ContentTypeID=1Tue, 24 Oct 2017 13:21:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4c2a4ac3-8d5a-4d3c-af70-06513b5ad8f0J&#248;rgen Holmefjord<p>Can you try updating the SAADC driver to the one included in SDK 13.0.0 or above? There was some issues with the driver in SDK 12.x.0. You should be able to copy the files nrf_drv_saadc.c/.h directly from SDK 13.0.0 to SDK 12.2.0.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/102952?ContentTypeID=1Tue, 24 Oct 2017 08:37:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d8b1dbe1-4633-4eb5-abe8-e2765595ab78ndarkness<p>I have updated the post with my <code>saadc_handler_interrupt()</code></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/102950?ContentTypeID=1Mon, 23 Oct 2017 09:36:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1c29b264-4608-49a5-8b3d-ede363346b52J&#248;rgen Holmefjord<p>Could you post the code where you clear <code>m_adc_cal_in_progress</code>?</p><div style="clear:both;"></div>