(java) error: Reading external Card with NFC ACR122...

[Astar]

Hi!

I'm playing around with java, NFC ACR122 reader and the nokia 6131. I found an online sample code to read a MiFare card with java + the reader, so I don't use the nokia yet. Too bad it doesn't work for me! I used the "ReaderApplication" sample code from http://wiki.forum.nokia.com/index.ph..._Code_Examples

package at.nfcresearch.wima.examples;

import javax.smartcardio.*;
import java.util.List;
import java.util.ListIterator;

public class Main {

    private static byte[] SELECT = {(byte) 0x00, (byte) 0xA4, (byte) 0x04, (byte) 0x00, (byte) 0x09, (byte) 0x74, (byte) 0x69, (byte) 0x63, (byte) 0x6B, (byte) 0x65, (byte) 0x74, (byte) 0x69, (byte) 0x6E, (byte) 0x67, (byte) 0x00};
    private static byte[] INS_INC = {(byte) 0x00, (byte) 0x01, (byte) 0x00, (byte) 0x00};
    private static byte[] INS_DEC = {(byte) 0x00, (byte) 0x02, (byte) 0x00, (byte) 0x00};
    private static byte[] INS_READ = {(byte) 0x00, (byte) 0x03, (byte) 0x00, (byte) 0x00, (byte) 0x01};
    private static CommandAPDU SELECT_APDU = new CommandAPDU(SELECT);
    private static CommandAPDU INC_APDU = new CommandAPDU(INS_INC);
    private static CommandAPDU DEC_APDU = new CommandAPDU(INS_DEC);
    private static CommandAPDU READ_APDU = new CommandAPDU(INS_READ);

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        TerminalFactory tf = TerminalFactory.getDefault();
        CardTerminals ct = tf.terminals();
        List<CardTerminal> l = null;
        Card card = null;

        try {
            l = ct.list();
        } catch (Exception e) {
            System.out.println("Error listing Terminals: " + e.toString());
        }

        System.out.println("List of PC/SC Readers connected:");
        ListIterator i = l.listIterator();
        while (i.hasNext()) {
            System.out.println("Reader: " + ((CardTerminal) i.next()).getName());
        }

        // IMPORTANT: change this to the PC/SC Name of your reader!!
        CardTerminal c = ct.getTerminal("ACS ACR122 0");
        System.out.println("Terminal fetched");

        try {
            while (c.isCardPresent()) {

                try {
                    Thread.sleep(100);
                } catch (Exception e) {
                    System.out.print(("Error Sleep"));
                }

                try {
                    card = c.connect("T=0");
                    System.out.println("Terminal connected");
                } catch (Exception e) {
                    System.out.println("Terminal NOT onnected: " + e.toString());
                }

                System.out.println("ATR: " + arrayToHex(((ATR) card.getATR()).getBytes()));

                CardChannel ch = card.getBasicChannel();

                byte[] x = null;

                if (check9000(ch.transmit(SELECT_APDU))) {
                    System.out.println("SELECT OKAY");
                } else {
                    System.out.println("SELECT NOT OKAY");
                    return;
                }

                ResponseAPDU ra = ch.transmit(READ_APDU);
                if (check9000(ra)) {
                    System.out.println("Value: " + ra.getBytes()[0]);
                } else {
                    System.out.println("Error Reading Value");
                }

                return;




            }// while
        }// try
        catch (CardException e) {
            System.out.println("Error isCardPresent()" + e.toString());
        }

    }

    public static boolean check9000(ResponseAPDU ra) {
        byte[] response = ra.getBytes();
        return (response[response.length - 2] == (byte) 0x90 && response[response.length - 1] == (byte) 0x00);
    }

    public static String arrayToHex(byte[] data) {
        StringBuffer sb = new StringBuffer();

        for (int i = 0; i < data.length; i++) {
            String bs = Integer.toHexString(data[i] & 0xFF);
            if (bs.length() == 1) {
                sb.append(0);
            }
            sb.append(bs);
        }

        return sb.toString();
    }
}

I've been trying for hours to get it to work now. Googled around, but found no solution for the following output when I build the file:

run:
List of PC/SC Readers connected:
Reader: ACS ACR122 0
Terminal fetched: ACS ACR122 0
Terminal connected
ATR: 3b00
Error isCardPresent()javax.smartcardio.CardException: sun.security.smartcardio.PCSCException: Unknown error 0x6f7
BUILD SUCCESSFUL (total time: 3 seconds)

Looks like it finds the reader but the error (unknown error) doesn't tell me what the problem is...
When I start commenting and replacing pieces of code, it looks like the error is triggered when the following code is executed:

if (check9000(ch.transmit(SELECT_APDU))) {
      System.out.println("SELECT OKAY");
} else {
      System.out.println("SELECT NOT OKAY");
      return;
}

I think it has something to do with the transmit part...

How do I fix this?

Greetz,

Bas

[Astar]

I updated my first reply!
Seems that the error is from a lower part of the code... still no fix!

[GGelec]

I updated my first reply!
Seems that the error is from a lower part of the code... still no fix!

hello,

have you ever managed to transfer text from your reader to your mobile phone nokia?

[Astar]

No, still no luck... I just can't get it to work!

Who can help me???