1/*jslint node:true, vars:true, bitwise:true, unparam:true */
2/*jshint unused:true */
3/*global */
4/*
5 * Author: Zion Orent <zorent@ics.com>
6 * Copyright (c) 2014 Intel Corporation.
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining
9 * a copy of this software and associated documentation files (the
10 * "Software"), to deal in the Software without restriction, including
11 * without limitation the rights to use, copy, modify, merge, publish,
12 * distribute, sublicense, and/or sell copies of the Software, and to
13 * permit persons to whom the Software is furnished to do so, subject to
14 * the following conditions:
15 *
16 * The above copyright notice and this permission notice shall be
17 * included in all copies or substantial portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
20 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
22 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
23 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
24 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
25 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 */
27
28//Load servo module.
29var servoModule = require("jsupm_servo");
30
31//Instantiate ES08A Servo module on GPIO 5
32var servo = new servoModule.ES08A(5);
33
34// function to initialize servo
35    // timeOffset: how long after hitting "run"
36    //		should we start this servo instance
37    // timeInterval: how frequently should this instance run after timeOffset
38    // angle: the angle for this instance
39function startServo(timeOffset, timeInterval, angle)
40{
41    // Start running this instance after timeOffset milliseconds
42    setTimeout(function()
43    {
44        // run this instance every timeInterval milliseconds
45        setInterval(function()
46        {
47            servo.setAngle(angle);
48            console.log("Set angle to " + angle);
49        }, timeInterval);
50    }, timeOffset);
51    // timeOffset tells setTimeout when
52    //		to execute the function specified in the first param
53    // angle is passed as a param to the specified function
54}
55// start immediately, run every 3 seconds, go 0 degrees
56startServo(0, 3000, 0);
57
58// start in 1 second, run every 3 seconds, go 90 degrees
59startServo(1000, 3000, 90);
60
61// start in 2 seconds, run every 3 seconds, go 180 degrees
62startServo(2000, 3000, 180);
63
64// Print message when exiting
65process.on('SIGINT', function()
66{
67	console.log("Exiting...");
68	process.exit(0);
69});
70