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_grovecollision as upmGrovecollision
26
27# The was tested with the Grove Collision Sensor
28# Instantiate a Grove Collision on digital pin D2
29myGrovecollision = upmGrovecollision.GroveCollision(2)
30
31
32## Exit handlers ##
33# This stops python from printing a stacktrace when you hit control-C
34def SIGINTHandler(signum, frame):
35	raise SystemExit
36
37# This lets you run code on exit,
38# including functions from myGrovecollision
39def exitHandler():
40	print "Exiting"
41	sys.exit(0)
42
43# Register exit handlers
44atexit.register(exitHandler)
45signal.signal(signal.SIGINT, SIGINTHandler)
46
47
48collisionState = False
49print "No collision"
50
51while(1):
52	if (myGrovecollision.isColliding() and not collisionState):
53		print "Collision!"
54		collisionState = True
55	elif (not myGrovecollision.isColliding() and collisionState):
56		print "No collision"
57		collisionState = False
58