1 /*
2 * Author: Jon Trulson <jtrulson@ics.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 #include <unistd.h>
26 #include <iostream>
27 #include "m24lr64e.h"
28
29 using namespace std;
30 using namespace upm;
31
main(int argc,char ** argv)32 int main(int argc, char **argv)
33 {
34 //! [Interesting]
35 // Instantiate an M24LR64E on I2C bus 0
36
37 upm::M24LR64E *nfcTag = new upm::M24LR64E(M24LR64E_I2C_BUS);
38
39 // This example accesses the device in the 'user' (default) mode,
40 // reads the last byte of data in the EEPROM, inverts it, writes
41 // it back, and then re-reads it.
42
43 // Read the last byte of the EEPROM area
44
45 int addr = M24LR64E::EEPROM_I2C_LENGTH - 1;
46 printf("Address: %d\n", addr);
47 uint8_t byte = nfcTag->readByte(addr);
48 printf("Read byte: %02x\n", byte);
49
50 // Now change it to it's opposite and write it
51 byte = ~byte;
52 nfcTag->writeByte(addr, byte);
53 printf("Wrote inverted byte: %02x\n", byte);
54
55 // Now read it back.
56 byte = nfcTag->readByte(addr);
57 printf("Read byte: %02x\n", byte);
58
59 //! [Interesting]
60
61 cout << "Exiting..." << endl;
62
63 delete nfcTag;
64 return 0;
65 }
66