Debian 13: configurating Syris RD200-M1-G v01.55 Card Reader Part 2, detecting card reader in Debian

Add you as group of dialout (20)

# usermod -aG dialout myuser
# usermod -aG uucp myuser
# usermod -aG lock myuser
# usermod -aG tty myuser

Note: 

1. All of these groups may not exist on every Linux distro. (Note, this process must only be done once for each user)
2. if you use terminal only, this will effect directly, but if you use window Manager, you require to logout and re-login to make it effect especially on Netbeans, If aftar re-login fail, try restart.  

Confirm which com the reader assign

# ls -l /dev/ttyACM0
crw-rw---- 1 root dialout 166, 0 May 19 13:43 /dev/ttyACM0

The card reader assign com at /dev/ttyACM0

This is simple java code to read card when tap on device

import com.fazecast.jSerialComm.SerialPort;
import java.io.InputStream;
import java.io.OutputStream;

/**
 *
 * @author dedetok
 */
public class DedetokSerialCom {

    static private SerialPort serialPort;
    static private int boudRate = 115200;
            
    public static void main(String[] args) {
        System.out.println("Hello World!");
        
        serialPort = SerialPort.getCommPort("/dev/ttyACM0");
        
        // Configure serial port
        serialPort.setBaudRate(boudRate);
        serialPort.setNumDataBits(8);
        serialPort.setNumStopBits(SerialPort.ONE_STOP_BIT);
        serialPort.setParity(SerialPort.NO_PARITY);
        
        // Optional timeouts
        serialPort.setComPortTimeouts(
                SerialPort.TIMEOUT_READ_SEMI_BLOCKING,
                1000,
                0
        );
        
        
        // Open port
        if (!serialPort.openPort()) {
            System.out.println("Failed to open port");
            return;
        }
        
        System.out.println("Port opened"); // debug
                
        // ------------------read mifare id card ----------------------
        System.out.println("MIFARE"); // debug
        // STX LEN CMD
        byte[] cmd = new byte[] {
                (byte)0x02, // STX
                (byte)0x01, // LEN
                (byte)0x11  // CMD Read UID
        };
        
        // Send
        serialPort.writeBytes(cmd, cmd.length);

        System.out.println("command Send"); // debug
        
        /*
        02 02 11 10 : command error
        02 02 11 01 : no card
        02 06 11 00 xx xx xx xx : mifare id xx xx xx xx
        */

        byte[] rx = new byte[64];

        int n = serialPort.readBytes(rx, rx.length);

        System.out.println("Received bytes: " + n);

                // Print raw HEX
        for (int i = 0; i < n; i++) {
            System.out.printf("%02X ", rx[i]);
        }
        System.out.println();

        // ------------------read ISO15693 inventory card ----------------------
        // NOT SUPPORTED


        System.out.println();

        serialPort.closePort();

        
        System.out.println("Port Closed"); // debug
    }
}

This is sample output with uid masked Netbeans

Hello World!
Port opened
MIFARE
command Send
Received bytes: 8
02 06 xx xx xx xx xx 52 

What are they?

02 STX
06 LENGTH
Data 1-5 xx xx xx xx xx
Checksum 52 

e.g. to read Mifare UID (0x11)

command in bytes: 02 01 11

02: run command

01: length

11: command to read Mifare UID

10 checksum ( 01 xor 11 )

if return 4 bytes: MIFARE Classic 1K/4K

if return 7 bytes: NTAG / Ultralight / DESFire

if return 8 bytes: ISO15693

Example response 4 bytes UID (classic mifare)

02 06 01 xx xx xx xx 8E 
 |  |  |  |           |
 |  |  |  |           -> checksum
 |  |  |  -------------> data uid
 |  |  ----------------> status 
 |  -------------------> length data
 ----------------------> STX

Example response 6 bytes UID

02 0A 11 00 xx xx xx xx xx xx 80 00
 |  |  |  |                    |  |
 |  |  |  |                    |  -> SAK
 |  |  |  |                    ----> checksum
 |  |  |  -------------------------> data uid
 |  |  ----------------------------> status
 |  -------------------------------> length data
 ----------------------------------> STX