X-Git-Url: https://zdv2.bktei.com/gitweb/EVA-2020-02-2.git/blobdiff_plain/be4506a78edb35b7bc4514949833cb86459e24c3..c161c52b91df55e59441551353551c5b539121ad:/examples/compensated-temperature.py?ds=sidebyside diff --git a/examples/compensated-temperature.py b/examples/compensated-temperature.py index 6a9c115..b648f57 100755 --- a/examples/compensated-temperature.py +++ b/examples/compensated-temperature.py @@ -1,8 +1,7 @@ -#!/usr/bin/env python +#!/usr/bin/env python3 import time from bme280 import BME280 -from subprocess import PIPE, Popen try: from smbus2 import SMBus @@ -31,14 +30,15 @@ bme280 = BME280(i2c_dev=bus) # Get the temperature of the CPU for compensation def get_cpu_temperature(): - process = Popen(['vcgencmd', 'measure_temp'], stdout=PIPE, universal_newlines=True) - output, _error = process.communicate() - return float(output[output.index('=') + 1:output.rindex("'")]) + with open("/sys/class/thermal/thermal_zone0/temp", "r") as f: + temp = f.read() + temp = int(temp) / 1000.0 + return temp # Tuning factor for compensation. Decrease this number to adjust the # temperature down, and increase to adjust up -factor = 0.8 +factor = 2.25 cpu_temps = [get_cpu_temperature()] * 5