/// <summary>
/// Used to read an EPC with NO Lock on the system
/// </summary>
/// <returns></returns>
private string Read_Epc()
{
var str = Inventory();
if (str == null)
{
Console.WriteLine("No Tags Found at {0}", ReaderName);
return(null);
}
Console.WriteLine("Tag ID at {0}:{1}", ReaderName, str[0]);
Thread.Sleep(500);
#region ReaderRequirements
const byte wordPtr = 0;
const byte mem = 1;
byte[] cardData = new byte[320];
byte wNum = Convert.ToByte(Convert.ToInt64(str[1]) - 2);
byte epcLength = Convert.ToByte(str[0].Length / 2);
byte eNum = Convert.ToByte(str[0].Length / 4);
byte MaskFlag = 0, MaskAdd = 0, MaskLen = 0;
var fPassWord = RfidConversion.HexStringToByteArray("00000000");
byte[] epc = new byte[eNum];
epc = RfidConversion.HexStringToByteArray(str[0]);
#endregion ReaderRequirements
_fCmdRet = StaticClassReaderB.ReadCard_G2(ref Reader.ComAddrr, epc, mem, wordPtr, wNum, fPassWord, MaskAdd,
MaskLen, MaskFlag, cardData, epcLength, ref Reader.ErrorCode, Reader.PortHandle);
if (_fCmdRet == 0) //Successful read
{
byte[] daw = new byte[wNum * 2];
Array.Copy(cardData, daw, wNum * 2);
Console.WriteLine("Tag ID at {0}:{1}", ReaderName, RfidConversion.ByteArrayToHexString(daw));
return(RfidConversion.ByteArrayToHexString(daw));
}
if (Reader.ErrorCode == -1)
{
return(null);
}
Console.WriteLine(
"Error reading EPC Value. ErrorCode=0x{0}({1})",
Convert.ToString(Reader.ErrorCode, 2),
RfidConversion.GetErrorCodeDesc(Reader.ErrorCode));
return(null);
}
public string WriteEpc()
{
lock (_locker)
{
#region ReaderRequirements
byte WordPtr = 1, ENum;
byte Mem = 1;
byte WNum = 0;
byte EPClength = 0;
byte Writedatalen = 0;
int WrittenDataNum = 0;
byte[] CardData = new byte[320];
byte[] writedata = new byte[230];
byte MaskFlag = 0, MaskAdd = 0, MaskLen = 0;
var fPassword = RfidConversion.HexStringToByteArray("00000000");
#endregion ReaderRequirements
var epcVal = Read_Epc();
#region Setup GUID
var guid = Guid.NewGuid().ToString().Replace("-", null).ToUpper(); //32 characters long
guid = guid + epcVal.Substring(epcVal.Length - 4);
ENum = Convert.ToByte(epcVal.Length / 4);
EPClength = Convert.ToByte(ENum * 2);
byte[] EPC = new byte[ENum];
WNum = Convert.ToByte(guid.Length / 4);
byte[] Writedata = new byte[WNum * 2];
Writedata = RfidConversion.HexStringToByteArray(guid);
Writedatalen = Convert.ToByte(WNum * 2);
#endregion Setup GUID
_fCmdRet = StaticClassReaderB.WriteCard_G2(ref Reader.ComAddrr, EPC, Mem, WordPtr,
Writedatalen, Writedata, fPassword, MaskAdd, MaskLen, MaskFlag, WrittenDataNum,
EPClength, ref Reader.ErrorCode, Reader.ComAddrr);
return(guid);
}
}
