private void CheckPortOpen()
{
if (serialPort == null || !serialPort.IsOpen)
{
throw ExceptionRFID.Create(ErrorCodeRFID.SerialPortOpenError, PortName);
}
}
public void CheckID(string id)
{
if (!IsCorrectID(id))
{
throw ExceptionRFID.Create(ErrorCodeRFID.INVALID_ID);
}
}
private void VerifyCheckSum(string rfidData)
{
_checkSumCalculate = CalculateCheckSum(rfidData);
if (_checkSumCalculate != (byte)rfidData[CheckSumByteNo])
{
throw ExceptionRFID.Create(ErrorCodeRFID.CHECKSUM_ERR);
}
}
public void DecodeWriteResponse(string writeResponse)
{
if (writeResponse.Length == 4 && writeResponse[0] == 'W' && writeResponse[1] == 'T')
{
DecodeErrorCode(writeResponse.Substring(2, 2));
}
else
{
throw ExceptionRFID.Create(ErrorCodeRFID.INVALID_DATA);
}
}
public byte DecodeCheckSum(string readData)
{
if (readData.Length == 5 && readData[0] == 'R' && readData[1] == 'D')
{
DecodeErrorCode(readData.Substring(2, 2));
return((byte)readData[4]);
}
else
{
throw ExceptionRFID.Create(ErrorCodeRFID.INVALID_DATA);
}
}
public string DecodeID(string readData)
{
if (readData.Length == 7 && readData[0] == 'R' && readData[1] == 'D')
{
DecodeErrorCode(readData.Substring(2, 2));
return(readData.Substring(4).Trim());
}
else
{
throw ExceptionRFID.Create(ErrorCodeRFID.INVALID_DATA);
}
}
private void DecodeErrorCode(string errorCodeString)
{
try
{
int errorCode = int.Parse(errorCodeString, System.Globalization.NumberStyles.HexNumber);
if (errorCode != 0)
{
throw ExceptionRFID.Create((ErrorCodeRFID)errorCode);
}
}
catch
{
throw ExceptionRFID.Create(ErrorCodeRFID.INVALID_DATA);
}
}
public void DecodeReadData(string readData, bool isChksum)
{
if (readData.Length >= 257 && readData[0] == 'R' && readData[1] == 'D')
{
DecodeErrorCode(readData.Substring(2, 2));
string rfidData = readData.Substring(4);
ExtractReadData(rfidData);
if (isChksum)
{
VerifyCheckSum(rfidData);
}
}
else
{
throw ExceptionRFID.Create(ErrorCodeRFID.INVALID_DATA);
}
}
private void OpenPort()
{
try
{
if (serialPort == null)
{
serialPort = new SerialPort(PortName);
}
else
{
if (serialPort.IsOpen)
{
serialPort.Close();
}
serialPort.PortName = PortName;
}
serialPort.BaudRate = BaudRate;
serialPort.DataBits = DataBits;
serialPort.Parity = Parity;
serialPort.StopBits = StopBits;
serialPort.ReadTimeout = ReadTimeOut;
serialPort.Encoding = Encoding.GetEncoding(28591); // 28591 = iso-8859-1 Western European (ISO)
serialPort.NewLine = "\r";
serialPort.Open();
if (serialPort.IsOpen)
{
serialPort.DiscardInBuffer();
serialPort.DiscardOutBuffer();
InitTagData();
}
else
{
throw ExceptionRFID.Create(ErrorCodeRFID.SerialPortOpenError, PortName);
}
}
catch
{
throw ExceptionRFID.Create(ErrorCodeRFID.SerialPortOpenError, PortName);
}
}
public static ExceptionRFID Create(ErrorCodeRFID errorCode, string message)
{
string errorMessage = "";
Severity severity = Severity.None;
switch (errorCode)
{
case ErrorCodeRFID.Unknown:
errorMessage = "Unknown error.";
severity = Severity.Error;
break;
case ErrorCodeRFID.RFID_SUCCESS:
errorMessage = "RFID operation succeeded.";
severity = Severity.None;
break;
case ErrorCodeRFID.MEMORY_ERR:
errorMessage = "Memory error. The internal data structures couldn't be allocated.";
severity = Severity.Error;
break;
case ErrorCodeRFID.RANGE_ERR:
errorMessage = "Parameter out of range error.";
severity = Severity.Error;
break;
case ErrorCodeRFID.NOT_FOUND:
errorMessage = "Station code not found error.";
severity = Severity.Error;
break;
case ErrorCodeRFID.NOT_NEXT:
errorMessage = "Station is out of sequence error.";
severity = Severity.Error;
break;
case ErrorCodeRFID.CHECKSUM_ERR:
errorMessage = "Check sum error for data in RFID tag. The data is corrupted.";
severity = Severity.Error;
break;
case ErrorCodeRFID.WRITECOUNT_ERR:
errorMessage = "The maximum number of write cycles has been reached on the RFID tag.";
severity = Severity.Error;
break;
//case ErrorCodeRFID.INVALID_CARRIER:
// errorMessage = "The tray at the RF head " + message + " does not contain a valid tray ID.";
// severity = Severity.Error;
// break;
case ErrorCodeRFID.INVALID_ID:
errorMessage = "Invalid Carrier/Tray ID.";
severity = Severity.Error;
break;
case ErrorCodeRFID.WRITE_VERIFY_ERR:
errorMessage = "Read after write failure.";
severity = Severity.Error;
break;
case ErrorCodeRFID.TAGTYPE_ERR:
errorMessage = "Operation not valid for tag error.";
severity = Severity.Error;
break;
case ErrorCodeRFID.TIMEOUT_ERR:
errorMessage = "No data was received error.";
severity = Severity.Error;
break;
case ErrorCodeRFID.NO_WORKORDER:
errorMessage = "No workorder description file was found error.";
severity = Severity.Error;
break;
case ErrorCodeRFID.ASYNC_BUSY:
errorMessage = "An asynchronous operation is already running.";
severity = Severity.Error;
break;
case ErrorCodeRFID.ASYNC_FAIL:
errorMessage = "The asynchronous operation failed.";
severity = Severity.Error;
break;
// Error from Controller
case ErrorCodeRFID.CTRL_BATTERY_LOW:
errorMessage = "Battery low warning indicating the battery replacement is required.";
severity = Severity.Warning;
break;
case ErrorCodeRFID.CTRL_VERICAL_PARITY_ERROR:
errorMessage = "Vertical parity error.";
severity = Severity.Error;
break;
case ErrorCodeRFID.CTRL_FRAMING_ERROR:
errorMessage = "Framing Error.";
severity = Severity.Error;
break;
case ErrorCodeRFID.CTRL_OVERRUN_ERROR:
errorMessage = "Overrun Error.";
severity = Severity.Error;
break;
case ErrorCodeRFID.CTRL_FORMAT_ERROR:
errorMessage = "Format Error.";
severity = Severity.Error;
break;
case ErrorCodeRFID.CTRL_EXECUTION_STATUS_ERROR:
errorMessage = "Execution status error.";
severity = Severity.Error;
break;
case ErrorCodeRFID.CTRL_FRAME_LENGTH_ERROR:
errorMessage = "Frame length error.";
severity = Severity.Error;
break;
case ErrorCodeRFID.CTRL_COMM_ERROR:
errorMessage = "Data carrier communications error.";
severity = Severity.Error;
break;
case ErrorCodeRFID.CTRL_MISMATCH_ERROR:
errorMessage = "Mismatch error.";
severity = Severity.Error;
break;
case ErrorCodeRFID.CTRL_DATA_CARRIER_ERROR:
errorMessage = "Data carrier non-existent error.";
severity = Severity.Error;
break;
case ErrorCodeRFID.CTRL_DATA_ERROR:
errorMessage = "Data error.";
severity = Severity.Error;
break;
case ErrorCodeRFID.CTRL_ADDRESS_ERROR:
errorMessage = "Address error.";
severity = Severity.Error;
break;
case ErrorCodeRFID.CTRL_ANTENNA_ERROR:
errorMessage = "Antenna error.";
severity = Severity.Error;
break;
case ErrorCodeRFID.CTRL_WRITE_PROTECT_ERROR:
errorMessage = "Write protect error.";
severity = Severity.Error;
break;
case ErrorCodeRFID.CTRL_MEMORY_ERROR:
errorMessage = "Memory error.";
severity = Severity.Error;
break;
// External Error
case ErrorCodeRFID.DLL_INTERNAL_ERR:
errorMessage = "DLL internal error.";
severity = Severity.Error;
break;
case ErrorCodeRFID.SerialPortError:
errorMessage = "Port " + message + ", Serial port error. Check that all cables are connected and the port is not being used by another application.";
severity = Severity.Error;
break;
case ErrorCodeRFID.SerialPortOpenError:
errorMessage = "Opening port " + message + " Error. Check that it is not being used by another application.";
severity = Severity.Error;
break;
case ErrorCodeRFID.INVALID_DATA:
errorMessage = "Invalid Data.";
severity = Severity.Error;
break;
default:
errorMessage = "Omron internal error reading/writing the RFID tag on the tray at the " + message + ".";
severity = Severity.Error;
break;
}
ExceptionRFID ex = new ExceptionRFID(errorMessage);
ex.severity = severity;
ex._errorCode = errorCode;
return(ex);
}