//CARD IDENTIFICATION COMMANDS
#region GetCSN
/// <summary>
/// Obtiene el número serial de la tarjeta mifare.
/// </summary>
/// <param name="csn">Arreglo de 6 bytes donde se guarda el CSN.</param>
/// <param name="numbytes">Número de bytes recibidos</param>
/// <returns>SUCCESS en caso de Exito o MifareStatusCodes.</returns>
public int GetCSN(ref byte[] csn, ref int numbytes)
{
int status = 0;
byte[] ucByteSend = new byte[16];
byte[] pucReceiveData = new byte[16];
ucByteSend[0] = 0xFF; //CLA
ucByteSend[1] = 0xCA; //INS
ucByteSend[2] = 0x00; //P1
ucByteSend[3] = 0x00; //P2
ucByteSend[4] = 0x00; //Le
int ulnByteSend = 5;
int pullReceiveDataBufLen = 36;
int rc = scardr.Transmit(ucByteSend, ulnByteSend, ref pucReceiveData, ref pullReceiveDataBufLen);
if (rc == 0)
{
status = pucReceiveData[pullReceiveDataBufLen - 2] << 8;
status = status | pucReceiveData[pullReceiveDataBufLen - 1];
if (status == MifareStatusCodes.SUCCESS)
{
for (int i = 0; i < pullReceiveDataBufLen - 2; i++)
{
csn[i] = pucReceiveData[i];
}
numbytes = pullReceiveDataBufLen - 2;
}
}
return(status);
}
