1 /*
2  * Author: Thomas Ingleby <thomas.c.ingleby@intel.com>
3  * Copyright (c) 2014 Intel Corporation.
4  * Author: Petre Eftime <petre.p.eftime@intel.com>
5  * Copyright (c) 2015 Intel Corporation.
6  *
7  * Permission is hereby granted, free of charge, to any person obtaining
8  * a copy of this software and associated documentation files (the
9  * "Software"), to deal in the Software without restriction, including
10  * without limitation the rights to use, copy, modify, merge, publish,
11  * distribute, sublicense, and/or sell copies of the Software, and to
12  * permit persons to whom the Software is furnished to do so, subject to
13  * the following conditions:
14  *
15  * The above copyright notice and this permission notice shall be
16  * included in all copies or substantial portions of the Software.
17  *
18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
21  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
22  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25  */
26 
27 import mraa.Gpio;
28 import mraa.mraa;
29 
30 public class GpioMmapped {
31   static {
32     try {
33       System.loadLibrary("mraajava");
34     } catch (UnsatisfiedLinkError e) {
35       System.err.println(
36           "Native code library failed to load. See the chapter on Dynamic Linking Problems in the SWIG Java documentation for help.\n" +
37           e);
38       System.exit(1);
39     }
40   }
main(String argv[])41   public static void main(String argv[]) throws InterruptedException {
42     //! [Interesting]
43     String board = mraa.getPlatformName();
44     String version = mraa.getVersion();
45     System.out.println("hello mraa");
46     System.out.println(String.format("Version: %s", version));
47 
48     Gpio gpio = new Gpio(1);
49 
50     gpio.useMmap(true);
51 
52     while (true) {
53         gpio.write(1);
54         Thread.sleep(50);
55         gpio.write(0);
56         Thread.sleep(50);
57     }
58     //! [Interesting]
59   };
60 }
61