67 lines
2 KiB
Python
67 lines
2 KiB
Python
#!/usr/bin/env python3
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# Python CO2 Logger
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# Copyright (c) 2019 Nis Wechselberg <enbewe@enbewe.de>
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#
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# This work is licensed under MIT license. You should have
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# received a copy of the MIT license legalcode along with this
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# work. If not, see <https://opensource.org/licenses/MIT>.
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# pylint: disable=C0103
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"""
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Python CO2 Logger
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Small daemon script that continuously monitors the CO2 concentration
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using a cheap sensor from Amazon. The data is fed directly to an InfluxDB.
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"""
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import argparse
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import time
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import os
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# InfluxDB Client to allow easy submission to time series database
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from influxdb import InfluxDBClient
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# Parser library for the Dostman AirCO2ntrol sensor
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from CO2Meter import CO2Meter
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# Configure argument parsing
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parser = argparse.ArgumentParser()
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parser.add_argument("dev", help="Device node of the sensor (i.e. /dev/co2mini0)")
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parser.add_argument("dbHost", help="Hostname/IP of the InfluxDB machine")
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parser.add_argument("dbName", help="Name of the database to write to")
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parser.add_argument("-i", "--interval", help="Time between two measurements (sec)",
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type=int, default=180)
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parser.add_argument("-n", "--node", help="Node tag to mark the measurement", default="")
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args = parser.parse_args()
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# Make sure the device exists and is readable
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if os.path.exists(args.dev):
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Meter = CO2Meter(args.dev)
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Meter.get_data()
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time.sleep(10)
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while True:
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measurement = Meter.get_data()
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# Prepare data for database
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influxData = [
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{
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"measurement": "feinstaub",
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"tags": {
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"node": args.node
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},
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"fields": {
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"co2": measurement['co2'],
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"temperature": measurement['temperature']
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}
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}
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]
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# Send data to InfluxDB
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influx = InfluxDBClient(host=args.dbHost, database=args.dbName)
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influx.write_points(influxData)
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time.sleep(args.interval)
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else:
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print("Device not found")
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