ISOB and 6212 my response is the same as my command

[lemac59]

Hi all,

I'm new to NFC and I started by trying out the TargetDetectorMidlet example from Nokia which worked quite well.

Then, I wanted to test a command so I changed the targetDetected method :

    
public void targetDetected(TargetProperties[] prop) {
clearScreen();
siScreenText.setText("Target detected, target contains " + prop.length +" contactless targets");

  TargetProperties target = prop[0];
  Class[] classes = target.getConnectionNames();
  try {
      for (int i=0; i<classes.length; i++) { 
	   if(classes[i].equals(Class.forName("javax.microedition.contactless.sc.ISO14443Connection")))          
           {   	         
             String url = target.getUrl(classes[i]);
             // Open connection to external smart card
             ISO14443Connection smc = (ISO14443Connection)Connector.open(url);
	                 
					
             byte[] cmd2 = {(byte)0x00, (byte) 0xA4, (byte) 0x04, (byte) 0x00, (byte)0x08, (byte)0xA0, (byte)0x00, (byte)0x00, (byte)0x04, (byte)0x04, (byte)0x01, (byte)0x25, (byte)0x09}; 
             byte[] response = smc.exchangeData(cmd2);
             siScreenText.setText(siScreenText.getText()+"\n\nResponse "+toHexString(response));
             smc.close();
	    }
         }
  }catch (IOException e) {
      siScreenText.setText("IOException"+e.getMessage());
  }catch (ClassNotFoundException e) {
      siScreenText.setText("ClassNotFoundException"+e.getMessage());
  } catch (ContactlessException e) {
       siScreenText.setText("ContactlessException"+e.getMessage());
  } 
		
}

public static String toHexString(byte[] value) {
  StringBuffer buf = new StringBuffer();
  for (int i = 0; i < value.length; i++) {
    String val = Integer.toHexString(value[i] & 0xff).toUpperCase();
    if (val.length() == 1) {
       buf.append('0');
    }
    buf.append(val);
  }
  return buf.toString();
}

My response is always the same as my command.
How is that possible, what am I doing wrong ?