BeagleBoneBlack Analog Input Files Does not Exist

Question

I want to make a simple project using BBB.I am following these steps from Web Site but there is no "AIN1" file on my BBB Screenshot and i don't understand where is the problem.

Answer 1

There are two modes of ADC in BBB, For single shot mode just cat to the address

cat /sys/bus/iio/devices/iio:device0/in_voltage4_raw

If you want in continuous mode do the following and it should get you started properly.

Consider you want to start ADC 1, 5, then

echo 1 > /sys/bus/iio/devices/iio:device0/scan_elements/in_voltage0_en

echo 1 > /sys/bus/iio/devices/iio:device0/scan_elements/in_voltage5_en

in terminal and then set buffer length by

echo 100 > /sys/bus/iio/devices/iio:device0/buffer/length

then start ADC

echo 1 > /sys/bus/iio/devices/iio:device0/buffer/enable