1 echo 1 > /sys/bus/iio/devices/iio_sysfs_trigger/add_trigger
2 echo 1 > /sys/bus/iio/devices/iio\:device0/scan_elements/in_voltage7_en
3 echo 1 > /sys/bus/iio/devices/iio\:device0/scan_elements/in_voltage5_en
4 generic_buffer -n TI-am335x-adc -t sysfstrig1 -l 128