Hi guys, i have a problem with the serial port communication. I am trying to read from the serial port, but it appears that only 14 bytes can be read at once. This is probably the size of the serial port receive buffer.
I have a serial extension card in my pc which adds 2 serial ports. With a null modem cable i can send data from one serial port to the other.

Code:
m_SerialPort.SetCommMask(EV_RXCHAR);

	if(m_SerialPort.WaitCommEvent(&dwEventMask, NULL))
	{
		unsigned char szBuf;
		DWORD dwIncomingReadSize;
		DWORD dwSize = 0;
		int iByteCount = 0;

		do
		{
			if(m_SerialPort.ReadData(&szBuf, 1, &dwIncomingReadSize) != 0)
			{
				if(dwIncomingReadSize > 0)
				{
					dwSize += dwIncomingReadSize;
					m_pReceiveBuf[iByteCount] = szBuf;
					iByteCount++;
				}
			}
			else
			{
				// Handle error condition
			}
		}while( (dwIncomingReadSize > 0) && (iByteCount < RECEIVE_BUF_SIZE) );

		*dwReceivedBytes = iByteCount;
	}
If i send 20 bytes i want to read 20 bytes at the other side. Does anybody have a solution for this problem?