1 /*
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 */
24 #include <iostream>
25 #include <time.h>
26 #include <signal.h>
27 #include "groveelectromagnet.h"
28
29 using namespace std;
30
31 int shouldRun = true;
32
sig_handler(int signo)33 void sig_handler(int signo)
34 {
35 if (signo == SIGINT)
36 shouldRun = false;
37 }
38
get_time()39 float get_time()
40 {
41 return ((float)(clock()))/CLOCKS_PER_SEC;
42 }
43
main(int argc,char ** argv)44 int main(int argc, char **argv)
45 {
46 signal(SIGINT, sig_handler);
47
48 //! [Interesting]
49 // The was tested with the Grove Electromagnetic Module
50 // Instantiate a Grove Electromagnet on digital pin D2
51 upm::GroveElectromagnet* magnet = new upm::GroveElectromagnet(2);
52 cout << "Starting up magnet...." << endl;
53 magnet->off();
54
55 bool magnetState = false;
56 float time_passed = get_time();
57
58 // Turn magnet on and off every 5 seconds
59 while (shouldRun)
60 {
61 if ((get_time() - time_passed) > 5.0)
62 {
63 magnetState = !magnetState;
64 if (magnetState)
65 magnet->on();
66 else
67 magnet->off();
68 cout << "Turning magnet " << ((magnetState) ? "on" : "off") << endl;
69 time_passed = get_time();
70 }
71 }
72
73 //! [Interesting]
74 magnet->off();
75 cout << "Exiting" << endl;
76
77 delete magnet;
78 return 0;
79 }
80