#!/usr/bin/env python3
#//////////////////////////////////////
#	analogin.py
# 	Reads the analog value of the light sensor.
#//////////////////////////////////////
import time
import os

pin = "2"        # light sensor, A2, P9_37

IIOPATH='/sys/bus/iio/devices/iio:device0/in_voltage'+pin+'_raw'

print('Hit ^C to stop')

f = open(IIOPATH, "r")

while True:
    f.seek(0)
    x = float(f.read())/4096
    print('{}: {:.1f}%, {:.3f} V'.format(pin, 100*x, 1.8*x), end = '\r')
    time.sleep(0.1)

# // Bone  | Pocket | AIN
# // ----- | ------ | --- 
# // P9_39 | P1_19  | 0
# // P9_40 | P1_21  | 1
# // P9_37 | P1_23  | 2
# // P9_38 | P1_25  | 3
# // P9_33 | P1_27  | 4
# // P9_36 | P2_35  | 5
# // P9_35 | P1_02  | 6