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66 lines
2.1 KiB
C++
66 lines
2.1 KiB
C++
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/*
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* Author: Jon Trulson <jtrulson@ics.com>
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* Copyright (c) 2015 Intel Corporation.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <unistd.h>
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#include <iostream>
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#include "m24lr64e.h"
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using namespace std;
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using namespace upm;
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int main(int argc, char **argv)
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{
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//! [Interesting]
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// Instantiate an M24LR64E on I2C bus 0
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upm::M24LR64E *nfcTag = new upm::M24LR64E(M24LR64E_I2C_BUS);
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// This example accesses the device in the 'user' (default) mode,
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// reads the last byte of data in the EEPROM, inverts it, writes
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// it back, and then re-reads it.
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// Read the last byte of the EEPROM area
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int addr = M24LR64E::EEPROM_I2C_LENGTH - 1;
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printf("Address: %d\n", addr);
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uint8_t byte = nfcTag->readByte(addr);
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printf("Read byte: %02x\n", byte);
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// Now change it to it's opposite and write it
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byte = ~byte;
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nfcTag->writeByte(addr, byte);
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printf("Wrote inverted byte: %02x\n", byte);
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// Now read it back.
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byte = nfcTag->readByte(addr);
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printf("Read byte: %02x\n", byte);
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//! [Interesting]
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cout << "Exiting..." << endl;
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delete nfcTag;
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return 0;
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}
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