1 /*
2 * Author: Brendan Le Foll <brendan.le.foll@intel.com>
3 * Author: Thomas Ingleby <thomas.c.ingleby@intel.com>
4 * Copyright (c) 2014 Intel Corporation.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining
7 * a copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sublicense, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be
15 * included in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
20 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26 #include <signal.h>
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <stdlib.h>
30 #include <unistd.h>
31
32 #include "mraa.hpp"
33 #define DEFAULT_IOPIN 8
34
35 static int iopin;
36 int running = 0;
37
38 void
sig_handler(int signo)39 sig_handler(int signo)
40 {
41 if (signo == SIGINT) {
42 printf("closing IO%d nicely\n", iopin);
43 running = -1;
44 }
45 }
46 int
main(int argc,char ** argv)47 main(int argc, char** argv)
48 {
49 if (argc < 2) {
50 printf("Provide an int arg if you want to flash on something other than %d\n", DEFAULT_IOPIN);
51 iopin = DEFAULT_IOPIN;
52 } else {
53 iopin = strtol(argv[1], NULL, 10);
54 }
55
56 signal(SIGINT, sig_handler);
57
58 //! [Interesting]
59 mraa::Gpio* gpio = new mraa::Gpio(iopin);
60 if (gpio == NULL) {
61 return mraa::ERROR_UNSPECIFIED;
62 }
63 mraa::Result response = gpio->dir(mraa::DIR_OUT);
64 if (response != mraa::SUCCESS) {
65 mraa::printError(response);
66 return 1;
67 }
68
69 while (running == 0) {
70 response = gpio->write(1);
71 sleep(1);
72 response = gpio->write(0);
73 sleep(1);
74 }
75 delete gpio;
76 return response;
77 //! [Interesting]
78 }
79