1#!/usr/bin/python
2# Author: Zion Orent <zorent@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
24import time, sys, signal, atexit
25import pyupm_guvas12d as upmUV
26
27# Instantiate a UV sensor on analog pin A0
28myUVSensor = upmUV.GUVAS12D(0);
29
30# analog voltage, usually 3.3 or 5.0
31GUVAS12D_AREF = 5.0;
32SAMPLES_PER_QUERY = 1024;
33
34
35## Exit handlers ##
36# This function stops python from printing a stacktrace when you hit control-C
37def SIGINTHandler(signum, frame):
38	raise SystemExit
39
40# This function lets you run code on exit, including functions from myUVSensor
41def exitHandler():
42	print "Exiting"
43	sys.exit(0)
44
45# Register exit handlers
46atexit.register(exitHandler)
47signal.signal(signal.SIGINT, SIGINTHandler)
48
49
50while(1):
51	s = ("AREF:  {0}, "
52	"Voltage value (higher means more UV): "
53	"{1}".format(GUVAS12D_AREF,
54	myUVSensor.value(GUVAS12D_AREF, SAMPLES_PER_QUERY)))
55	print s
56	time.sleep(1)
57