1 /*
2 * Author: Thomas Ingleby <thomas.c.ingleby@intel.com>
3 * Copyright (c) 2014 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 "stdio.h"
26 #include "unistd.h"
27
28 #include "mraa.h"
29
30 int
main(int argc,char ** argv)31 main(int argc, char** argv)
32 {
33 mraa_init();
34 fprintf(stdout, "MRAA Version: %s\nStarting Read on IO6\n", mraa_get_version());
35
36 //! [Interesting]
37 mraa_gpio_context gpio;
38
39 gpio = mraa_gpio_init(6);
40
41 mraa_gpio_dir(gpio, MRAA_GPIO_IN);
42
43 for (;;) {
44 fprintf(stdout, "Gpio is %d\n", mraa_gpio_read(gpio));
45 sleep(1);
46 }
47
48 mraa_gpio_close(gpio);
49 //! [Interesting]
50
51 return 0;
52 }
53