1 /* 2 * Author: Stefan Andritoiu <stefan.andritoiu (at) intel.com> 3 * Copyright (c) 2015 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 //NOT TESTED!!! 26 public class M24LR64ESample { 27 28 static { 29 try { 30 System.loadLibrary("javaupm_m24lr64e"); 31 } catch (UnsatisfiedLinkError e) { 32 System.err.println("error in loading native library"); 33 System.exit(-1); 34 } 35 } 36 37 public static void main(String[] args) throws InterruptedException { 38 // ! [Interesting] 39 // Instantiate an M24LR64E on I2C bus 0 40 upm_m24lr64e.M24LR64E nfcTag = new upm_m24lr64e.M24LR64E(0); 41 42 // This example accesses the device in the 'user' (default) mode, 43 // reads the last byte of data in the EEPROM, inverts it, writes 44 // it back, and then re-reads it. 45 46 // Read the last byte of the EEPROM area 47 int addr = upm_m24lr64e.M24LR64E.EEPROM_I2C_LENGTH - 1; 48 System.out.println("Address: " + addr); 49 short read = nfcTag.readByte(addr); 50 System.out.println("Read: " + read); 51 52 // Now change it to it's opposite and write it 53 read = (short) (~read & 0xff); 54 nfcTag.writeByte(addr, read); 55 System.out.println("Wrote: " + read); 56 57 // Now read it back 58 read = nfcTag.readByte(addr); 59 System.out.println("Read: " + read); 60 61 // ! [Interesting] 62 } 63 64 }