AM335x ADC Driver's Guide - Texas Instruments Wiki
NOTE Check ADC mode. root@arago-armv7:~# cat /sys/bus/iio/devices/iio\:device0/mode oneshot To read a single ADC value, ADC has to be configured in one-shot mode. If not in one-shot mode, This can be set by: root@arago-armv7:~# echo oneshot > /sys/bus...