1/*
2 * Author: Alexander Komarov <alexander.komarov@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
27import mraa.Spi;
28
29public class SpiMCP4261 {
30    static {
31        try {
32            System.loadLibrary("mraajava");
33        } catch (UnsatisfiedLinkError e) {
34            System.err.println(
35                    "Native code library failed to load. See the chapter on Dynamic Linking Problems in the SWIG Java documentation for help.\n" +
36                            e);
37            System.exit(1);
38        }
39    }
40    public static void main(String argv[]) throws InterruptedException {
41        //! [Interesting]
42        Spi spi = new Spi(0);
43
44        System.out.println("Hello, SPI initialised");
45        byte data[] = {0x00, 100};
46        while (true) {
47            for (int i = 90; i < 130; i++) {
48                data[1] = (byte) i;
49                byte[] recv = spi.write(data);
50                System.out.println(String.format("Writing - %d", i));
51                System.out.println(String.format("Received - %d - %d", recv[0], recv[1]));
52                Thread.sleep(100);
53            }
54            for (int i = 130; i > 90; i--) {
55                data[1] = (byte) i;
56                byte[] recv = spi.write(data);
57                System.out.println(String.format("Writing - %d", i));
58                System.out.println(String.format("Received - %d - %d", recv[0], recv[1]));
59                Thread.sleep(100);
60            }
61        }
62        //! [Interesting]
63    };
64}
65