Pimoronie Verzeichnis gelöscht.
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dtparam=spi=off
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dtparam=i2c_arm=on
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#!/usr/bin/env python
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import time
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try:
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from smbus2 import SMBus
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except ImportError:
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from smbus import SMBus
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from bme280 import BME280
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print("""all-values.py - Read temperature, pressure, and humidity
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Press Ctrl+C to exit!
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""")
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# Initialise the BME280
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bus = SMBus(1)
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bme280 = BME280(i2c_dev=bus)
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while True:
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temperature = bme280.get_temperature()
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pressure = bme280.get_pressure()
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humidity = bme280.get_humidity()
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print('{:05.2f}*C {:05.2f}hPa {:05.2f}%'.format(temperature, pressure, humidity))
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time.sleep(1)
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#!/usr/bin/env python
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import time
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from bme280 import BME280
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from subprocess import PIPE, Popen
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try:
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from smbus2 import SMBus
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except ImportError:
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from smbus import SMBus
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print("""compensated-temperature.py - Use the CPU temperature to compensate temperature
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readings from the BME280 sensor. Method adapted from Initial State's Enviro pHAT
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review: https://medium.com/@InitialState/tutorial-review-enviro-phat-for-raspberry-pi-4cd6d8c63441
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Press Ctrl+C to exit!
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""")
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# Initialise the BME280
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bus = SMBus(1)
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bme280 = BME280(i2c_dev=bus)
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# Gets the CPU temperature in degrees C
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def get_cpu_temperature():
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process = Popen(['vcgencmd', 'measure_temp'], stdout=PIPE)
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output, _error = process.communicate()
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output = output.decode()
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return float(output[output.index('=') + 1:output.rindex("'")])
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factor = 0.6 # Smaller numbers adjust temp down, vice versa
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smooth_size = 10 # Dampens jitter due to rapid CPU temp changes
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cpu_temps = []
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while True:
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cpu_temp = get_cpu_temperature()
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cpu_temps.append(cpu_temp)
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if len(cpu_temps) > smooth_size:
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cpu_temps = cpu_temps[1:]
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smoothed_cpu_temp = sum(cpu_temps) / float(len(cpu_temps))
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raw_temp = bme280.get_temperature()
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comp_temp = raw_temp - ((smoothed_cpu_temp - raw_temp) / factor)
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print("Compensated temperature: {:05.2f} *C".format(comp_temp))
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time.sleep(1.0)
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#!/usr/bin/env python
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try:
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from smbus2 import SMBus
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except ImportError:
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from smbus import SMBus
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from bme280 import BME280
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print("""dump-calibration.py - Dumps calibration data.
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Press Ctrl+C to exit!
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""")
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# Initialise the BME280
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bme280 = BME280(i2c_dev=SMBus(1))
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bme280.setup()
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for key in dir(bme280.calibration):
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if key.startswith('dig_'):
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value = getattr(bme280.calibration, key)
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print('{} = {}'.format(key, value))
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#!/usr/bin/env python
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import time
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try:
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from smbus2 import SMBus
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except ImportError:
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from smbus import SMBus
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from bme280 import BME280
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print("""local_altitude.py -
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Allows you to correct the QNH for your local area.
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Do not rely on this approximation for landing planes.
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Press Ctrl+C to exit!
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""")
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# Initialise the BME280
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bus = SMBus(1)
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bme280 = BME280(i2c_dev=bus)
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# asks the user for their local QNH value and confirms it
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local_qnh = input("""Please enter your local QNH value.
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You can find this by searching for a local METAR on the internet.
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>""")
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print("You have told us the QNH is", local_qnh)
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# converts the input into a floating point number
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local_qnh = float(local_qnh)
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time.sleep(1)
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# workaround to get rid of the first reading
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altitude = bme280.get_altitude()
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print("Waiting a couple of seconds for the sensor to initialise...")
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time.sleep(2)
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while True:
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altitude = bme280.get_altitude(qnh=local_qnh)
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print(round(altitude), "metres above sea level")
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time.sleep(2)
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#!/usr/bin/env python
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import time
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try:
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from smbus2 import SMBus
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except ImportError:
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from smbus import SMBus
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from bme280 import BME280
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print("""relative-altitude.py - Calculates relative altitude from pressure.
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Press Ctrl+C to exit!
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""")
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# Initialise the BME280
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bus = SMBus(1)
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bme280 = BME280(i2c_dev=bus)
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baseline_values = []
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baseline_size = 100
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print("Collecting baseline values for {:d} seconds. Do not move the sensor!\n".format(baseline_size))
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# Collect some values to calculate a baseline pressure
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for i in range(baseline_size):
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pressure = bme280.get_pressure()
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baseline_values.append(pressure)
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time.sleep(1)
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# Calculate average baseline
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baseline = sum(baseline_values[:-25]) / len(baseline_values[:-25])
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while True:
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altitude = bme280.get_altitude(qnh=baseline)
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print('Relative altitude: {:05.2f} metres'.format(altitude))
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time.sleep(1)
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#!/usr/bin/env python
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import time
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try:
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from smbus2 import SMBus
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except ImportError:
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from smbus import SMBus
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from bme280 import BME280
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print("""temperature-compare.py - Compares oversampling levels
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(requires two BME280s with different addresses).
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Press Ctrl+C to exit!
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""")
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# Initialise the BME280
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bus = SMBus(1)
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bme280A = BME280(i2c_dev=bus)
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bme280B = BME280(i2c_dev=bus, i2c_addr=0x77)
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# Set up in "forced" mode
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# In this mode `get_temperature` and `get_pressure` will trigger
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# a new reading and wait for the result.
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# The chip will return to sleep mode when finished.
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bme280A.setup(mode="normal", temperature_oversampling=1, pressure_oversampling=1)
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bme280B.setup(mode="normal", temperature_oversampling=16, pressure_oversampling=16)
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while True:
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temperatureA = bme280A.get_temperature()
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temperatureB = bme280B.get_temperature()
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print('Forced: {:05.2f}*C Normal: {:05.2f}*C D: {:05.2f}'.format(temperatureA, temperatureB, abs(temperatureA - temperatureB)))
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time.sleep(1)
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#!/usr/bin/env python
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import time
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try:
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from smbus2 import SMBus
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except ImportError:
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from smbus import SMBus
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from bme280 import BME280
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# Initialise the BME280
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bus = SMBus(1)
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bme280 = BME280(i2c_dev=bus)
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# Set up in "forced" mode
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# In this mode `get_temperature` and `get_pressure` will trigger
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# a new reading and wait for the result.
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# The chip will return to sleep mode when finished.
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bme280.setup(mode="forced")
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while True:
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temperature = bme280.get_temperature()
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print('{:05.2f}*C'.format(temperature))
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time.sleep(1)
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printf "It's recommended you run these steps manually.\n"
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printf "If you want to run the full script, open it in\n"
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printf "an editor and remove 'exit 1' from below.\n"
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exit 1
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/usr/bin/python3 -m pip uninstall pimoroni-bme280
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cp /home/pi/Pimoroni/config-backups/config.preinstall-pimoroni-bme280-2022-07-22-06-35-49.txt /boot/config.txt
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rm -r /home/pi/Pimoroni/pimoroni-bme280
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