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This driver was developed using the Veris HD2NVSTA1 humidity transmitter. The 'T' variant supports a temperature transmitter as well. Both signals are provided by the device as analog 0-5Vdc or 0-10Vdc outputs. The A1 variant supports a temperature range of -40C-50C, while the A2 variant supports a range of 0C-50C. Humidity ranges for all devices in this device family range from 0% to 100% (non-condensing). Temperature measurement can be disabled by passing -1 as the temperature analog pin to the constructor. Signed-off-by: Jon Trulson <jtrulson@ics.com> Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
60 lines
2.0 KiB
Python
60 lines
2.0 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_hdxxvxta 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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print "Initializing..."
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# Instantiate an HDXXVXTA instance, using A1 for humidity and A0
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# for temperature
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sensor = sensorObj.HDXXVXTA(1, 0)
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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
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time.sleep(1)
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