https://devzone.nordicsemi.com/f/nordic-q-a/26809/saadc---switch-channel-on-demandI am using a nRF52 and I have to measure two voltages: the first continuously when a command is received, the second voltage have to be measured and then switch back to measure the first I initialize the saadc driver, configureen-USTelligent Community 13Mon, 13 Nov 2017 10:12:58 GMThttps://devzone.nordicsemi.com/thread/105362?ContentTypeID=1Mon, 13 Nov 2017 10:12:58 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5efb9645-3303-4071-86ec-5d108123bfa8J&#248;rgen Holmefjord<p>Hi,</p> <p><a href="https://devzone.nordicsemi.com/question/129715/saadc-wrong-readings-impossible-to-calibrate/?answer=129913#post-id-129913">This answer</a> describe why you get <code>NRF_ERROR_BUSY</code>. The suggested solution will also apply to your use-case.</p> <p>Best regards,</p> <p>Jørgen</p><div style="clear:both;"></div>