1 #!/usr/bin/python 2 # Author: Zion Orent <zorent (at] ics.com> 3 # Copyright (c) 2015 Intel Corporation. 4 # 5 # Permission is hereby granted, free of charge, to any person obtaining 6 # a copy of this software and associated documentation files (the 7 # "Software"), to deal in the Software without restriction, including 8 # without limitation the rights to use, copy, modify, merge, publish, 9 # distribute, sublicense, and/or sell copies of the Software, and to 10 # permit persons to whom the Software is furnished to do so, subject to 11 # the following conditions: 12 # 13 # The above copyright notice and this permission notice shall be 14 # included in all copies or substantial portions of the Software. 15 # 16 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 17 # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 18 # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 19 # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 20 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 21 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 22 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 23 24 import time, sys, signal, atexit 25 import pyupm_si114x as upmSi114x 26 27 # Instantiate a SI114x UV Sensor on I2C bus 0 28 myUVSensor = upmSi114x.SI114X(0) 29 30 31 ## Exit handlers ## 32 # This stops python from printing a stacktrace when you hit control-C 33 def SIGINTHandler(signum, frame): 34 raise SystemExit 35 36 # This function lets you run code on exit, 37 # including functions from myUVSensor 38 def exitHandler(): 39 print "Exiting" 40 sys.exit(0) 41 42 # Register exit handlers 43 atexit.register(exitHandler) 44 signal.signal(signal.SIGINT, SIGINTHandler) 45 46 47 # First initialize it 48 myUVSensor.initialize() 49 50 print "UV Index Scale:" 51 print "---------------" 52 print "11+ Extreme" 53 print "8-10 Very High" 54 print "6-7 High" 55 print "3-5 Moderate" 56 print "0-2 Low\n" 57 58 # update every second and print the currently measured UV Index 59 while (1): 60 # update current value(s) 61 myUVSensor.update() 62 63 # print detected value 64 print "UV Index:", myUVSensor.getUVIndex() 65 66 time.sleep(1) 67