public void Open()
{
int int32 = Convert.ToInt32(RuntimeHelpers.GetObjectValue(Interaction.IIf(this.meMode == Rs232.Mode.Overlapped, (object)1073741824, (object)0)));
if (this.miPort <= 0)
{
throw new ApplicationException("COM Port not defined, use Port property to set it before invoking InitPort");
}
try
{
this.mhRS = Rs232.CreateFile("COM" + this.miPort.ToString(), -1073741824, 0, 0, 3, int32, 0);
if (this.mhRS == -1)
{
throw new Rs232.CIOChannelException("Unable to open COM" + this.miPort.ToString());
}
int lpErrors = 0;
int num = Rs232.ClearCommError(this.mhRS, lpErrors, 0);
num = Rs232.PurgeComm(this.mhRS, 12);
Rs232.DCB lpDCB = new DCB();
num = Rs232.GetCommState(this.mhRS, ref lpDCB);
num = Rs232.BuildCommDCB(string.Format("baud={0} parity={1} data={2} stop={3}", (object)this.miBaudRate, (object)"NOEM".Substring((int)this.meParity, 1), (object)this.miDataBit, (object)this.meStopBit), ref lpDCB);
if (Rs232.SetCommState(this.mhRS, ref lpDCB) == 0)
{
throw new Rs232.CIOChannelException("Unable to set COM state0" + this.pErr2Text(Rs232.GetLastError()));
}
num = Rs232.SetupComm(this.mhRS, this.miBufferSize, this.miBufferSize);
this.pSetTimeout();
}
catch (Exception ex)
{
ProjectData.SetProjectError(ex);
Exception InnerException = ex;
throw new Rs232.CIOChannelException(InnerException.Message, InnerException);
}
}
public void ClearInputBuffer()
{
if (this.mhRS == -1)
{
return;
}
Rs232.PurgeComm(this.mhRS, 8);
}
public void Write(byte[] Buffer)
{
if (this.mhRS == -1)
{
throw new ApplicationException("Please initialize and open port before using this method");
}
try
{
if (this.meMode == Rs232.Mode.Overlapped)
{
if (this.pHandleOverlappedWrite(Buffer))
{
throw new ApplicationException("Error in overllapped write");
}
}
else
{
Rs232.PurgeComm(this.mhRS, 12);
int mhRs = this.mhRS;
byte[] Buffer1 = Buffer;
int length = Buffer.Length;
int num = 0;
// ISSUE: explicit reference operation
// ISSUE: variable of a reference type
int lpNumberOfBytesWritten = @num;
Rs232.OVERLAPPED overlapped = (Rs232.OVERLAPPED)((object)null ?? Activator.CreateInstance(typeof(Rs232.OVERLAPPED)));
// ISSUE: explicit reference operation
// ISSUE: variable of a reference type
Rs232.OVERLAPPED lpOverlapped = @overlapped;
if (Rs232.WriteFile(mhRs, Buffer1, length, ref lpNumberOfBytesWritten, ref lpOverlapped) == 0)
{
throw new ApplicationException("Write Error - Bytes Written " + num.ToString() + " of " + Buffer.Length.ToString());
}
}
}
catch (Exception ex)
{
ProjectData.SetProjectError(ex);
throw;
}
}
private bool pHandleOverlappedWrite(byte[] Buffer)
{
this.muOverlappedW.hEvent = Rs232.CreateEvent(0, 1, 0, (string)null);
if (this.muOverlappedW.hEvent == 0)
{
throw new ApplicationException("Error creating event for overlapped write.");
}
Rs232.PurgeComm(this.mhRS, 12);
this.mbWaitOnRead = true;
int num = 0;
bool flag = false;
if (Rs232.WriteFile(this.mhRS, Buffer, Buffer.Length, ref num, ref this.muOverlappedW) == 0)
{
int lastError = Rs232.GetLastError();
if (lastError != 997)
{
throw new ArgumentException("Overlapped Read Error: " + this.pErr2Text(lastError));
}
if (Rs232.WaitForSingleObject(this.muOverlappedW.hEvent, -1) == 0)
{
if (Rs232.GetOverlappedResult(this.mhRS, ref this.muOverlappedW, ref num, 0) == 0)
{
flag = true;
}
else
{
this.mbWaitOnRead = false;
//if (this.TxCompletedEvent != null)
// this.TxCompletedEvent(this);
}
}
}
else
{
flag = false;
}
Rs232.CloseHandle(this.muOverlappedW.hEvent);
return(flag);
}
