RS232串口通讯DLL源代码

RS232串口通讯DLL源代码,在VC++6.0下编译通过.

#include
#include “RS232dll.h“

bool OpenSerial（CString m_sPort）
{
	COMMTIMEOUTS TimeOuts;	

	if （m_bOpen）
	{
		return TRUE;
	}
	
    m_hCom = CreateFile（m_sPort						// communication port string （COMX）
					     GENERIC_READ | GENERIC_WRITE	// read/write types
					     0								// comm devices must be opened with exclusive access
					     NULL							// no security attributes
					     OPEN_EXISTING					// comm devices must use OPEN_EXISTING
					     FILE_FLAG_OVERLAPPED			// Async I/O
					     0）;		

	DCB dcb;	
	dcb.DCBlength = sizeof（DCB）;
	dcb.BaudRate = 9600;		// 波特率
	dcb.fParity = FALSE;
	dcb.ByteSize = 8;	// 每字节位数
	dcb.Parity = NOPARITY;//无奇偶检验
	dcb.StopBits = ONESTOPBIT;//1个停止位

	if （m_hCom == INVALID_HANDLE_VALUE）
	{
		return FALSE;
	

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件    1318982  2008-10-06 15:40  RS232dll\Debug\RS232dll.dll

     文件        893  2008-10-06 15:40  RS232dll\Debug\RS232dll.exp

     文件    1700544  2008-10-06 15:40  RS232dll\Debug\RS232dll.ilk

     文件       2504  2008-10-06 15:40  RS232dll\Debug\RS232dll.lib

     文件      10519  2008-10-06 15:39  RS232dll\Debug\RS232dll.obj

     文件    2517916  2008-10-06 15:39  RS232dll\Debug\RS232dll.pch

     文件    2688000  2008-10-06 15:40  RS232dll\Debug\RS232dll.pdb

     文件     107520  2008-10-06 15:40  RS232dll\Debug\vc60.idb

     文件      53248  2008-10-06 15:39  RS232dll\Debug\vc60.pdb

     文件       2354  2008-10-06 15:39  RS232dll\RS232dll.cpp

     文件       4136  2008-10-06 09:07  RS232dll\RS232dll.dsp

     文件        524  2008-10-06 09:06  RS232dll\RS232dll.dsw

     文件        545  2008-10-06 15:39  RS232dll\RS232dll.h

     文件      41984  2008-10-06 15:55  RS232dll\RS232dll.ncb

     文件      53760  2008-10-06 15:55  RS232dll\RS232dll.opt

     文件        843  2008-10-06 15:40  RS232dll\RS232dll.plg

     目录          0  2008-10-06 15:40  RS232dll\Debug

     目录          0  2008-10-06 15:55  RS232dll

----------- ---------  ---------- -----  ----

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