i2c_hts221_SysFS.py

#!/usr/bin/python3

import os
import time
import sys

temp_raw = open("/sys/bus/iio/devices/iio:device0/in_temp_raw", "r")
temp_offset = open("/sys/bus/iio/devices/iio:device0/in_temp_offset", "r")
temp_scale = open("/sys/bus/iio/devices/iio:device0/in_temp_scale", "r")

devID = "i2c_hts221"

temp_raw_value = float(temp_raw.read())
temp_raw.seek(0)
temp_raw.close()

temp_offset_value = float(temp_offset.read())
temp_offset.seek(0)
temp_offset.close()

temp_scale_value = float(temp_scale.read())
temp_scale.seek(0)
temp_scale.close()

tempC = (temp_offset_value + temp_raw_value) * temp_scale_value

tempF = (tempC * 9/5) + 32

humidity_raw = open("/sys/bus/iio/devices/iio:device0/in_humidityrelative_raw", "r")
humidity_offset = open("/sys/bus/iio/devices/iio:device0/in_humidityrelative_offset", "r")
humidity_scale = open("/sys/bus/iio/devices/iio:device0/in_humidityrelative_scale", "r")

humidity_raw_value = float(humidity_raw.read())
humidity_raw.seek(0)
humidity_raw.close()

humidity_offset_value = float(humidity_offset.read())
humidity_offset.seek(0)
humidity_offset.close()

humidity_scale_value = float(humidity_scale.read())
humidity_scale.seek(0)
humidity_scale.close()

humidity = (humidity_offset_value + humidity_raw_value) * humidity_scale_value

print("metric:id=%s,n=Temperature,vd=%0.2f,u=F" % (devID, tempF))
print("metric:id=%s,n=Humidity,vd=%0.2f,u=%%" % (devID, humidity))