1 /* 2 * Author: Alexander Komarov <alexander.komarov (at) intel.com> 3 * Copyright (c) 2014 Intel Corporation. 4 * Author: Petre Eftime <petre.p.eftime (at) 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.Spi; 28 29 public 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
