https://devzone.nordicsemi.com/f/nordic-q-a/21745/how-to-use-3-channels-of-adc-in-non-blockin-modeHello all, am trying to configure 3 adc channels in a way to have conversion in 3 differents pins, without usin timer and ppi. so I implement the following code, the problem is that I have a static error in a channel which is supposed to be null, foren-USTelligent Community 13Tue, 02 May 2017 14:36:05 GMThttps://devzone.nordicsemi.com/thread/85401?ContentTypeID=1Tue, 02 May 2017 14:36:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:cfa13178-68d1-4e90-a7b7-9a9915b4c3b8acha<p>I don&#39;t understand your code. First you initialize all 3 channels, then you use some flag to indicate which channel is enabled, then you setup three different buffers for conversion (only two buffers can be setup for conversion at a time), and then uninit two of he channels in the callback. <strong><strong>-&gt;</strong> the idea is to have is to made conversion in only one channel in each interruption, now i resolve the problem to have conversion for all channels using p_event-&gt;data.done.p_buffer buffer.</strong></p> <p>I also don&#39;t understand why you are sampling unconnected inputs. Are you getting wrong samples with inputs connected? <strong>-&gt; Juste to be sure that nothing hapens in the non connected pins.</strong></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/85400?ContentTypeID=1Tue, 02 May 2017 11:09:04 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2903183c-dbbe-4378-bec8-b84fdebbdf04J&#248;rgen Holmefjord<p>I don&#39;t understand your code. First you initialize all 3 channels, then you use some flag to indicate which channel is enabled, then you setup three different buffers for conversion (only two buffers can be setup for conversion at a time), and then uninit two of he channels in the callback.</p> <p>You can use scan mode to sample all three channels at once. The samples will be stored in the buffer like this: [channel0,channel1,channel2,channel0,...]. You can find an example of how to use scan mode <a href="https://github.com/NordicSemiconductor/nrf51-ADC-examples/tree/master/adc_timer_driven_scan_mode">on our Github</a>. This can easily be changed to call the <code>nrf_drv_saadc_sample</code> manually if you don&#39;t want to use timer/PPI.</p> <p>I also don&#39;t understand why you are sampling unconnected inputs. Are you getting wrong samples with inputs connected?</p><div style="clear:both;"></div>