1 /* 2 * Author: Alexander Komarov <alexander.komarov@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 public class Bmp85 { 26 static { 27 try { 28 System.loadLibrary("mraajava"); 29 } catch (UnsatisfiedLinkError e) { 30 System.err.println( 31 "Native code library failed to load. See the chapter on Dynamic Linking Problems in the SWIG Java documentation for help.\n" + 32 e); 33 System.exit(1); 34 } 35 } main(String argv[])36 public static void main(String argv[]) { 37 mraa.mraa.init(); 38 System.out.println(mraa.mraa.getVersion()); 39 40 // helper function to go from hex val to dec 41 // function char(x) { return parseInt(x, 16); } 42 43 mraa.I2c i2c = new mraa.I2c(0); 44 i2c.address((byte)0x77); 45 i2c.writeByte((byte)0xd0); 46 /* 47 SWIGTYPE_p_unsigned_char data0 = new SWIGTYPE_p_unsigned_char();*/ 48 byte[] data = new byte[1]; 49 i2c.read(data); 50 System.out.println((new Integer(data[0])).toString()); 51 52 i2c.writeReg((byte)0xf4, (byte)0x2e); 53 // initialise device 54 if (i2c.readReg((byte)0xd0) != 0x55) { 55 System.out.println("error"); 56 } 57 58 // we want to read temperature so write 0x2e into control reg 59 i2c.writeReg((byte)0xf4, (byte)0x2e); 60 61 // read a 16bit reg, obviously it's uncalibrated so mostly a useless value 62 // :) 63 System.out.println(i2c.readWordReg((byte)0xf6)); 64 65 byte[] buf = new byte[2]; 66 buf[0] = (byte)0xf4; 67 buf[1] = (byte)0x2e; 68 i2c.write(buf); 69 70 i2c.writeByte((byte)0xf6); 71 int d = i2c.readReg((byte)2); 72 System.out.println((new Integer(d)).toString()); 73 }; 74 } 75 ; 76