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This module implements support for the Veris HWXPHTX Hardware Protocol Humidity and Temperature Sensor family. It uses MODBUS over an RS485 interface. This module was developed using libmodbus 3.1.2, and the Veris HWXPHTX. This sensor supports humidity, and optionally, temperature, slider switch, and override switch reporting. The HWXPHTX used to develop this driver did not include the optional slider or override switches, however support for them is provided. Signed-off-by: Jon Trulson <jtrulson@ics.com> Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
80 lines
2.6 KiB
Python
80 lines
2.6 KiB
Python
#!/usr/bin/python
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# Author: Jon Trulson <jtrulson@ics.com>
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# Copyright (c) 2016 Intel Corporation.
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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import time, sys, signal, atexit
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import pyupm_hwxpxx as sensorObj
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## Exit handlers ##
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# This function stops python from printing a stacktrace when you hit control-C
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def SIGINTHandler(signum, frame):
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raise SystemExit
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# This function lets you run code on exit
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def exitHandler():
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print "Exiting..."
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sys.exit(0)
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# Register exit handlers
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atexit.register(exitHandler)
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signal.signal(signal.SIGINT, SIGINTHandler)
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defaultDev = "/dev/ttyUSB0"
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# if an argument was specified, use it as the device instead
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if (len(sys.argv) > 1):
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defaultDev = sys.argv[1]
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print "Using device", defaultDev
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print "Initializing..."
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# Instantiate an HWXPXX instance, using MODBUS slave address 3, and
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# default comm parameters (19200, 8, N, 2)
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sensor = sensorObj.HWXPXX(defaultDev, 3)
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# output the serial number and firmware revision
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print "Slave ID:", sensor.getSlaveID()
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# stored temperature and humidity offsets
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print "Temperature Offset:", sensor.getTemperatureOffset()
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print "Humidity Offset:", sensor.getHumidityOffset()
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print
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# update and print available values every second
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while (1):
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# update our values from the sensor
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sensor.update()
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# we show both C and F for temperature
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print "Temperature:", sensor.getTemperature(), "C /",
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print sensor.getTemperature(True), "F"
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print "Humidity:", sensor.getHumidity(), "%"
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print "Slider:", sensor.getSlider(), "%"
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print "Override Switch Status:", sensor.getOverrideSwitchStatus()
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print
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time.sleep(1)
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