2015-03-23 13:55:50 -04:00
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#!/usr/bin/python
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# Author: Zion Orent <zorent@ics.com>
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# Copyright (c) 2015 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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2016-10-10 14:48:42 -07:00
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from __future__ import print_function
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2015-03-23 13:55:50 -04:00
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import time, sys, signal, atexit
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2016-10-10 14:48:42 -07:00
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from upm import pyupm_ppd42ns as upmPpd42ns
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2015-03-23 13:55:50 -04:00
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2016-09-29 18:24:19 -07:00
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def main():
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# Instantiate a dust sensor on digital pin D8
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myDustSensor = upmPpd42ns.PPD42NS(8)
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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, including functions from myDustSensor
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def exitHandler():
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2016-10-10 14:48:42 -07:00
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print("Exiting")
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2016-09-29 18:24:19 -07:00
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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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notice = ("This program will give readings "
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"every 30 seconds until you stop it")
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2016-10-10 14:48:42 -07:00
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print(notice)
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2016-09-29 18:24:19 -07:00
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while(1):
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data = myDustSensor.getData()
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# we need to sleep for a bit for the data to print out
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time.sleep(.1)
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2016-10-10 14:48:42 -07:00
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print("Low pulse occupancy: " + str(data.lowPulseOccupancy))
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print("Ratio: " + str(data.ratio))
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print("Concentration: " + str(data.concentration))
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2016-09-29 18:24:19 -07:00
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if __name__ == '__main__':
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main()
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