/// <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 comAddrr = 0xff;
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 comAddrr, AdrTID, LenTID,
TIDFlag, EPC, ref Totallen, ref CardNum, _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] = ByteArrayToHexString(daw).Remove(0, 2);
fInventory_EPC_List[1] = ByteArrayToHexString(daw).Remove(2);
_eventLog.WriteEntry("Inventory Gather status\n" + EventIds.GetErrorCodeDesc(_fCmdRet), EventLogEntryType.Information, (int)EventIds.Ids.GetTagInventorySuccess);
return(fInventory_EPC_List);
}
_eventLog.WriteEntry("Inventory Gather status\n" + EventIds.GetErrorCodeDesc(_fCmdRet), EventLogEntryType.Information, (int)EventIds.Ids.GetTagInventoryFailure);
return(null);
}
public RfidReader(ServiceConfig.Reader readerConfig, ref EventLog log)
{
_eventLog = log;
try
{
var connected = Connect(readerConfig.Address, readerConfig.PortNum);
if (connected != 0x35 || connected != 0x00) //Success
{
_eventLog.WriteEntry($"Unsuccessfully Connected\n{EventIds.GetReturnCodeDesc(connected)}", EventLogEntryType.FailureAudit, (int)EventIds.Ids.UnsuccessfulRFIDConnection);
}
}
catch (Exception e)
{
_eventLog.WriteEntry($"Unknown Error\n{e.Message}\n{e.StackTrace}\n\n{e.InnerException}", EventLogEntryType.Error, (int)EventIds.Ids.UnknownError);
}
}
/// <summary>
/// Used to read an EPC with NO Lock on the system
/// </summary>
/// <returns></returns>
public string Read_Epc()
{
var str = Inventory();
if (str == null)
{
return(null);
}
#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 = HexStringToByteArray("00000000");
byte[] epc = new byte[eNum];
epc = HexStringToByteArray(str[0]);
#endregion ReaderRequirements
_fCmdRet = StaticClassReaderB.ReadCard_G2(ref _comAddress, epc, mem, wordPtr, wNum, fPassWord, MaskAdd,
MaskLen, MaskFlag, cardData, epcLength, ref _errorCode, _portHandle);
if (_fCmdRet == 0) //Successful read
{
byte[] daw = new byte[wNum * 2];
Array.Copy(cardData, daw, wNum * 2);
return(ByteArrayToHexString(daw));
}
if (_errorCode == -1)
{
return(null);
}
_eventLog.WriteEntry(
$"Error reading EPC Value. ErrorCode=0x{Convert.ToString(_errorCode, 2)}({EventIds.GetErrorCodeDesc(_errorCode)})", EventLogEntryType.Error, (int)EventIds.Ids.GetTagInventoryFailure);
return(null);
}