/// <summary>
/// <para>Gets current tags within range and return the first tag. Inventory not kept.</para>
/// <remarks>
/// <para>
/// Returns EPC of type <see cref="string"/>[2] || EPC[0] = Tag Lenght | EPC[1] = Tag ID
/// </para>
/// </remarks>
/// </summary>
/// <returns>[0] = Tag Lenght [1] = Tag ID</returns>
private string[] Inventory()
{
#region ReaderInventoryReq
byte AdrTID = 0;
byte LenTID = 0;
byte TIDFlag = 0;
byte[] EPC = new byte[5000];
int Totallen = 0;
int CardNum = 0;
string[] fInventory_EPC_List = new string[2];
#endregion ReaderInventoryReq
_fCmdRet = StaticClassReaderB.Inventory_G2(ref Reader.ComAddrr, AdrTID, LenTID,
TIDFlag, EPC, ref Totallen, ref CardNum, Reader.PortHandle);
if ((_fCmdRet == 1) | (_fCmdRet == 2) | (_fCmdRet == 3) | (_fCmdRet == 4)) //251 = no tags detected
{
byte[] daw = new byte[Totallen];
Array.Copy(EPC, daw, Totallen);
fInventory_EPC_List[0] = RfidConversion.ByteArrayToHexString(daw).Remove(0, 2);
fInventory_EPC_List[1] = RfidConversion.ByteArrayToHexString(daw).Remove(2);
return(fInventory_EPC_List);
}
Console.WriteLine(RfidConversion.GetErrorCodeDesc(_fCmdRet));
return(null);
}
/// <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);
}
