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bme680_default.py

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+#!/usr/bin/env python
+
+import time
+
+import bme680
+
+print("""bme680_default.py - Displays temperature, pressure, humidity, and gas.
+
+Press Ctrl+C to exit!
+
+""")
+
+try:
+    sensor = bme680.BME680(bme680.I2C_ADDR_PRIMARY)
+except (RuntimeError, IOError):
+    sensor = bme680.BME680(bme680.I2C_ADDR_SECONDARY)
+
+# These calibration data can safely be commented
+# out, if desired.
+
+print('Calibration data:')
+for name in dir(sensor.calibration_data):
+
+    if not name.startswith('_'):
+        value = getattr(sensor.calibration_data, name)
+
+        if isinstance(value, int):
+            print('{}: {}'.format(name, value))
+
+# These oversampling settings can be tweaked to
+# change the balance between accuracy and noise in
+# the data.
+
+sensor.set_humidity_oversample(bme680.OS_2X)
+sensor.set_pressure_oversample(bme680.OS_4X)
+sensor.set_temperature_oversample(bme680.OS_8X)
+sensor.set_filter(bme680.FILTER_SIZE_3)
+sensor.set_gas_status(bme680.ENABLE_GAS_MEAS)
+
+print('\n\nInitial reading:')
+for name in dir(sensor.data):
+    value = getattr(sensor.data, name)
+
+    if not name.startswith('_'):
+        print('{}: {}'.format(name, value))
+
+sensor.set_gas_heater_temperature(320)
+sensor.set_gas_heater_duration(150)
+sensor.select_gas_heater_profile(0)
+
+# Up to 10 heater profiles can be configured, each
+# with their own temperature and duration.
+# sensor.set_gas_heater_profile(200, 150, nb_profile=1)
+# sensor.select_gas_heater_profile(1)
+
+print('\n\nPolling:')
+try:
+    while True:
+        if sensor.get_sensor_data():
+            output = '{0:.2f} C,{1:.2f} hPa,{2:.2f} %RH'.format(
+                sensor.data.temperature,
+                sensor.data.pressure,
+                sensor.data.humidity)
+
+            if sensor.data.heat_stable:
+                print('{0},{1} Ohms'.format(
+                    output,
+                    sensor.data.gas_resistance))
+
+            else:
+                print(output)
+
+        time.sleep(1)
+
+except KeyboardInterrupt:
+    pass