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#!/usr/bin/python3
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# -*- coding: utf-8 -*-
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#
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# sensors/tph.py
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#
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# Copyright 2020 Ron Wellsted <ron@wellsted.org.uk>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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# MA 02110-1301, USA.
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#
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#
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import smbus2
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import bme280
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from sensors import i2cbus, bme280_address
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import w1thermsensor
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def __init__():
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if bme280_address is not None:
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bus = smbus2.SMBus(i2cbus)
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calibration_params = bme280.load_calibration_params(bus, bme280_address)
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data = bme280.sample(bus, bme280_address, calibration_params)
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def read_tph():
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if bme280_address is not None:
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data = bme280.sample(bus, bme280_address, calibration_params)
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air_temp = data.temperature
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pressure = data.pressure/1000.0 # convert to Bar
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humidity = data.humidity
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else:
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air_temp = None
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pressure = None
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humidity = None
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return (air_temp, pressure, humidity)
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