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85 lines
2.4 KiB
Java
85 lines
2.4 KiB
Java
/*
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* Author: Stefan Andritoiu <stefan.andritoiu@gmail.com>
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* Copyright (c) 2017 Intel Corporation.
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*
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* This program and the accompanying materials are made available under the
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* terms of the The MIT License which is available at
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* https://opensource.org/licenses/MIT.
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*
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* SPDX-License-Identifier: MIT
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*/
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// NOT TESTED!!!
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public class PN532_writeurl_Example {
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static private final String url = "iotdk.intel.com";
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public static void main(String[] args) throws InterruptedException {
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// ! [Interesting]
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// Instantiate an PN532 on I2C bus 0 (default) using gpio 3 for the
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// IRQ, and gpio 2 for the reset pin.
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upm_pn532.PN532 nfc = new upm_pn532.PN532(3, 2);
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if (!nfc.init())
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System.out.println("init() failed");
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long vers = nfc.getFirmwareVersion();
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if (vers != 0)
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System.out.println("Got firmware version: " + String.format("0x%08x", vers));
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else {
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System.out.println("Could not identify PN532\n");
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return;
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}
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// Now scan and identify any cards that come in range (1 for now)
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// Retry forever
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nfc.setPassiveActivationRetries((short) 0xff);
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nfc.SAMConfig();
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short[] uidSize = new short[1];
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byte[] uid = new byte[7];
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boolean foundCard = false;
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while (!foundCard) {
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if (nfc.readPassiveTargetID(PN532.BAUD_T.BAUD_MIFARE_ISO14443A, uid, uidSize, 2000)) {
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// found a card
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System.out.println("Found a card: UID len " + uidSize[0]);
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System.out.print("UID: ");
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for (int i = 0; i < uidSize[0]; i++)
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System.out.print(String.format("%02x", uid[i]) + " ");
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System.out.println("\nSAK: " + String.format("0x%02x", nfc.getSAK()));
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System.out.println("ATQA: " + String.format("0x%04x\n\n", nfc.getATQA()));
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foundCard = true;
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} else {
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System.out.println("Waiting for a card...");
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}
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}
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if (uidSize[0] != 7) {
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System.out.println("This example will only write an NDEF URI to preformatted");
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System.out.println("Mifare Ultralight or NTAG2XX tags\n");
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return;
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}
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// 48 bytes is maximum data area on ultralight cards, so we use that
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// as the maximum datasize here. Obviously if you have a bigger
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// card, you can write more data.
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if (!nfc.ntag2xx_WriteNDEFURI(PN532.NDEF_URI_T.NDEF_URIPREFIX_HTTP, url, (short) 48)) {
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// failure
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System.out.println("Failed to write NDEF record tag.\n");
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return;
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}
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System.out.println("Success, URL record written to tag.\n");
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// ! [Interesting]
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}
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}
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