upm/examples/java/PN532_Example.java

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/*
* Author: Stefan Andritoiu <stefan.andritoiu@gmail.com>
* Copyright (c) 2017 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.
*/
public class PN532_Example {
public static void main(String[] args) throws InterruptedException {
// ! [Interesting]
// Instantiate an PN532 on I2C bus 0 (default) using gpio 3 for the
// IRQ, and gpio 2 for the reset pin.
upm_pn532.PN532 nfc = new upm_pn532.PN532(3, 2);
if (!nfc.init())
System.out.println("init() failed");
long vers = nfc.getFirmwareVersion();
if (vers != 0)
System.out.println("Got firmware version: " + String.format("0x%08x", vers));
else {
System.out.println("Could not identify PN532\n");
return;
}
// Now scan and identify any cards that come in range (1 for now)
// Retry forever
nfc.setPassiveActivationRetries((short) 0xff);
nfc.SAMConfig();
short[] uidSize = new short[1];
byte[] uid = new byte[7];
while (true) {
if (nfc.readPassiveTargetID(PN532.BAUD_T.BAUD_MIFARE_ISO14443A, uid, uidSize, 2000)) {
// found a card
System.out.println("Found a card: UID len " + uidSize[0]);
System.out.print("UID: ");
for (int i = 0; i < uidSize[0]; i++)
System.out.print(String.format("%02x", uid[i]) + " ");
System.out.println("\nSAK: " + String.format("0x%02x", nfc.getSAK()));
System.out.println("ATQA: " + String.format("0x%04x\n\n", nfc.getATQA()));
Thread.sleep(1000);
} else {
System.out.println("Waiting for a card...");
}
}
// ! [Interesting]
}
}