Publish BME280 data from Raspberry Pi to ThingSpeak

publish-bme280-data-from-raspberry_pi-to-thingspeak.py

import thingspeak  # from https://thingspeak.readthedocs.io/en/latest/
import bme280  # from https://www.raspberrypi-spy.co.uk/2016/07/using-bme280-i2c-temperature-pressure-sensor-in-python/

# return the Pi CPU/GPU temperature in degree Celcius; it's a SoC and thus there's no need to read both, see
# https://www.cyberciti.biz/faq/linux-find-out-raspberry-pi-gpu-and-arm-cpu-temperature-command/#comment-796904
def get_temp():
    with open('/sys/class/thermal/thermal_zone0/temp', 'r') as infile:
        return float(infile.read()) * 1e-3

ch = thingspeak.Channel(275145, "*********", "*********")
temperature, pressure, humidity = bme280.readBME280All()

data = {"field1": temperature, "field2": humidity, "field3": pressure, "field4": get_temp()}
# print(data)
ch.update(data)