通讯编程

开发平台：
Visual C++

app.cpp：源码内容
							/*
Module : APP.CPP
Purpose: Provides the WinMain function for testing the serial port class
Created: PJN / 23-05-1999
History: None
Copyright (c) 1999 by PJ Naughter.  
All rights reserved.
*/
/////////////////////////////////  Includes  //////////////////////////////////
#include "stdafx.h"
#include "SerialPort.h"
///////////////////////////////// Defines /////////////////////////////////////
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
//////////////////////////////// Implementation ///////////////////////////////
class CSerialPortApp : public CWinApp
{
public:
  virtual BOOL InitInstance();
};
CSerialPortApp theApp;
BOOL CSerialPortApp::InitInstance()
{
  BYTE* pBuf = new BYTE[10000];
  try
  {
    COMMCONFIG config;
    CSerialPort::GetDefaultConfig(1, config);
    CSerialPort port;
    port.Open(1, 1200, CSerialPort::NoParity, 8, CSerialPort::OneStopBit, CSerialPort::XonXoffFlowControl);
    HANDLE hPort = port.Detach();
    port.Attach(hPort);
    DWORD dwModemStatus;
    port.GetModemStatus(dwModemStatus);
    DCB dcb;
    port.GetState(dcb);
    dcb.BaudRate = 9600;
    port.SetState(dcb);    
    DWORD dwErrors;                      
    port.ClearError(dwErrors);
    port.SetBreak();
    port.ClearBreak();
    COMSTAT stat;
    port.GetStatus(stat);
    COMMTIMEOUTS timeouts;
    port.GetTimeouts(timeouts);
    port.Setup(10000, 10000);
    port.GetConfig(config);
    config.dcb.BaudRate = 9600;
    port.SetConfig(config);
    port.Set0WriteTimeout();
    port.Set0ReadTimeout();
    char sBuf[] = "This should appear on the serial port";
    port.Write(sBuf, strlen(sBuf));
    DWORD dwMask;
    port.GetMask(dwMask);
    port.SetMask(EV_TXEMPTY); 
    //port.WaitEvent(dwMask);
    port.TerminateOutstandingWrites();
    port.TransmitChar('p');
    port.Set0Timeout();
    char sRxBuf[10];
    DWORD dwRead = port.Read(sRxBuf, 10);
    port.TerminateOutstandingReads();
    port.ClearDTR();
    port.ClearRTS();
    port.SetDTR();
    port.SetRTS();
    port.SetXOFF();
    port.SetXON();
    COMMPROP properties;
    port.GetProperties(properties);
    port.ClearWriteBuffer();
    port.ClearReadBuffer();
    port.Flush();
    port.Close();
    //Try out the overlapped functions
    CSerialPort port2;
    port2.Open(1, 9600, CSerialPort::NoParity, 8, CSerialPort::OneStopBit, CSerialPort::XonXoffFlowControl, TRUE);
    CEvent event(FALSE, TRUE);
    OVERLAPPED overlapped;
    ZeroMemory(&overlapped, sizeof(OVERLAPPED));
    overlapped.hEvent = event;
    if (!port2.Write(pBuf, 10000, overlapped))
    {
      DWORD dwBytesWritten;
      WaitForSingleObject(event, INFINITE);
      port2.GetOverlappedResult(overlapped, dwBytesWritten, TRUE);
    }
    if (!port2.Read(pBuf, 10, overlapped))
    {
      DWORD dwBytesRead;
      if (WaitForSingleObject(event, 1000) == WAIT_OBJECT_0)
      {
        TRACE(_T("Data was read from the serial portn"));
        port2.GetOverlappedResult(overlapped, dwBytesRead, FALSE);
      }
      else
        TRACE(_T("No data was read from the serial portn"));
    }
    port2.SetMask(EV_TXEMPTY); 
    port2.WaitEvent(dwMask, overlapped);                  
    /* for testing on NT only
    port2.WriteEx(sBuf, strlen(sBuf));
    SleepEx(INFINITE, TRUE);
    port2.ReadEx(pBuf, 10);
    SleepEx(INFINITE, TRUE);
    */
  }
  catch (CSerialException* pEx)
  {
    TRACE(_T("Handle Exception, Message:%sn"), pEx->GetErrorMessage());
    pEx->Delete();
  }
  delete [] pBuf;
  return FALSE;
}

						