1 /*
2 * Author: Jon Trulson <jtrulson@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
25 #include <unistd.h>
26 #include <iostream>
27 #include <signal.h>
28 #include "my9221.h"
29
30 using namespace std;
31
32 int shouldRun = true;
33
sig_handler(int signo)34 void sig_handler(int signo)
35 {
36 if (signo == SIGINT)
37 shouldRun = false;
38 }
39
40
main()41 int main ()
42 {
43 signal(SIGINT, sig_handler);
44
45 //! [Interesting]
46
47 // Instantiate a MY9221, we use D2 for the data, and D3 for the
48 // data clock. This was tested with a Grove LED bar.
49
50 upm::MY9221* bar = new upm::MY9221(2, 3);
51
52 while (shouldRun)
53 {
54 // count up from green to red
55 for (int i=1; i<=10; i++)
56 {
57 bar->setBarLevel(i, true);
58 usleep(50000);
59 }
60 sleep(1);
61
62 // count down from red to green
63 for (int i=1; i<=10; i++)
64 {
65 bar->setBarLevel(i, false);
66 usleep(50000);
67 }
68 sleep(1);
69 }
70 //! [Interesting]
71
72 cout << "Exiting..." << endl;
73 // turn off the LED's
74 bar->setBarLevel(0, true);
75
76 delete bar;
77 return 0;
78 }
79