upm/examples/c++/pn532-writeurl.cxx

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/*
* Author: Jon Trulson <jtrulson@ics.com>
* Copyright (c) 2015 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <iostream>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include "pn532.hpp"
using namespace std;
// the URL we want to add as an NDEF record
// NOTE: this cannot exceed 34 characters.
static char url[] = "iotdk.intel.com";
int
main(int argc, char** argv)
{
//! [Interesting]
// Instantiate an PN532 on I2C bus 0 (default) using gpio 3 for the
// IRQ, and gpio 2 for the reset pin.
upm::PN532 nfc(3, 2);
if (!nfc.init())
cerr << "init() failed" << endl;
uint32_t vers = nfc.getFirmwareVersion();
if (vers)
printf("Got firmware version: 0x%08x\n", vers);
else {
printf("Could not identify PN532\n");
return 1;
}
// Now scan and identify any cards that come in range (1 for now)
// Retry forever
nfc.setPassiveActivationRetries(0xff);
nfc.SAMConfig();
uint8_t uidSize;
uint8_t uid[7];
bool foundCard = false;
while (!foundCard) {
memset(uid, 0, 7);
if (nfc.readPassiveTargetID(nfc.BAUD_MIFARE_ISO14443A, uid, &uidSize, 2000)) {
// found a card
printf("Found a card: UID len %d\n", uidSize);
printf("UID: ");
for (int i = 0; i < uidSize; i++)
printf("%02x ", uid[i]);
printf("\n");
printf("SAK: 0x%02x\n", nfc.getSAK());
printf("ATQA: 0x%04x\n\n", nfc.getATQA());
foundCard = true;
} else {
printf("Waiting for a card...\n");
}
}
if (uidSize != 7) {
printf("This example will only write an NDEF URI to preformatted\n");
printf("Mifare Ultralight or NTAG2XX tags\n");
return 1;
}
// 48 bytes is maximum data area on ultralight cards, so we use that
// as the maximum datasize here. Obviously if you have a bigger
// card, you can write more data.
if (!nfc.ntag2xx_WriteNDEFURI(nfc.NDEF_URIPREFIX_HTTP, url, 48)) {
// failure
printf("Failed to write NDEF record tag.\n");
return 1;
}
printf("Success, URL record written to tag.\n");
//! [Interesting]
return 0;
}