https://devzone.nordicsemi.com/f/nordic-q-a/72119/nrf52-saadcI started developing a project on nRF52. My task is to read the value from the light sensor (phototransistor). The sensor is connected in this way: my code: init: reading: but it doesn&#39;t work .. The chip is reset every time I try toen-USTelligent Community 13Mon, 01 Mar 2021 14:14:31 GMThttps://devzone.nordicsemi.com/thread/296881?ContentTypeID=1Mon, 01 Mar 2021 14:14:31 GMT137ad170-7792-4731-bb38-c0d22fbe4515:868c1c6f-9ed0-4050-baac-4e3de7ae7f4eKenneth<p>You are mixing the first parameter used in&nbsp;nrf_drv_saadc_channel_init() and&nbsp;nrf_drv_saadc_sample_convert() with the analog input that is configured. There is no dependency between the two. So if you only want to sample NRF_SAADC_INPUT_AIN7 input, then you use <span>nrf_drv_saadc_channel_init(0,&amp;cfg),&nbsp;but make sure that&nbsp;cfg is using&nbsp;NRF_SAADC_INPUT_AIN7.&nbsp;</span></p> <p><span>I suggest to take a look at the \examples\peripheral\saadc in the nRF5 SDK.</span></p><div style="clear:both;"></div>