1/*jslint node:true, vars:true, bitwise:true, unparam:true */
2/*jshint unused:true */
3/*
4* Author: Zion Orent <zorent@ics.com>
5* Copyright (c) 2015 Intel Corporation.
6*
7* Permission is hereby granted, free of charge, to any person obtaining
8* a copy of this software and associated documentation files (the
9* "Software"), to deal in the Software without restriction, including
10* without limitation the rights to use, copy, modify, merge, publish,
11* distribute, sublicense, and/or sell copies of the Software, and to
12* permit persons to whom the Software is furnished to do so, subject to
13* the following conditions:
14*
15* The above copyright notice and this permission notice shall be
16* included in all copies or substantial portions of the Software.
17*
18* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
21* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
22* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25*/
26
27var collision_lib = require("jsupm_grovecollision");
28
29// The was tested with the Grove Collision Sensor
30// Instantiate a Grove Collision on digital pin D2
31var collision_obj = new collision_lib.GroveCollision(2);
32
33var collisionState = false;
34console.log("No collision");
35
36// Having an infinate loop prevents nodeJS from catching Cntl-C
37// We need to catch Cntl-C to clean up memory
38// Instead, we check the collision sensor every millisecond
39var myInterval = setInterval(function()
40{
41	if (collision_obj.isColliding() && !collisionState)
42	{
43		console.log("Collision!");
44		collisionState = true;
45	}
46	else if (!collision_obj.isColliding() && collisionState)
47	{
48		console.log("No collision");
49		collisionState = false;
50	}
51}, 1);
52
53// When exiting: clear interval, clean up memory, and print message
54process.on('SIGINT', function()
55{
56	clearInterval(myInterval);
57	collision_obj = null;
58	collision_lib.cleanUp();
59	collision_lib = null;
60	console.log("Exiting...");
61	process.exit(0);
62});
63