#include?“stdafx.h“
#include?“com232.h“

BYTE?XwCom=0x40;
BYTE??sCom1[5]sCom2[MAXBLOCKLENGTH+12]sCom3[MAXBLOCKLENGTH+12];
BYTE?opation;
short?ComNum;
//COMSTAT?ComStat;


CComStatus::CComStatus（）
{
	m_hCom?=?NULL;
	m_bComId?=?（char）ComNum;//COM1

	m_bByteSize=8;
	m_bStopBits=ONESTOPBIT;
	m_bParity=NOPARITY;
	m_dwBaudRate=9600;
//	m_fChEvt=1;
	m_bEvtChar=EVENTCHAR;
	m_fBinary=1;

	m_bConnected?=?FALSE;
	m_bFlowCtrl?=?FC_XONXOFF?;
	m_fXonXoff?=?FALSE;
}
CComStatus::CComStatus（BYTE?bComIdBYTE?bByteSizeBYTE?bStopBitsBYTE?bParity
		DWORD?dwBaudRate/*WORD?fChEvt*/char?bEvtCharDWORD?fBinary）
{
	m_hCom?=?NULL;
	m_bComId?=?bComId;

	m_bByteSize=bByteSize;
	m_bStopBits=bStopBits;
	m_bParity=bParity;
	m_dwBaudRate=dwBaudRate;
//	m_fChEvt=1;
	m_bEvtChar=bEvtChar;
	m_fBinary=fBinary;

	m_bConnected?=?FALSE;

	m_bFlowCtrl?=?FC_XONXOFF?;
	m_fXonXoff?=?FALSE;

}
BOOL?CComStatus::OpenConnection（）
{
	char?csCom[10];
????COMMTIMEOUTS??CommTimeOuts?;

????if（（m_bComId??4））
		return?FALSE;//從COM1到COM4
	if（m_hCom）//if?already?open
		return?FALSE;
????//OVERLAPPED包含異步I/O信息
	m_rdos.Offset?=?0;
	m_rdos.OffsetHigh?=?0;
	m_rdos.hEvent?=?CreateEvent（NULLTRUEFALSENULL）;
	if（m_rdos.hEvent?==?NULL）
		return?FALSE;
	m_wtos.Offset?=?0;
	m_wtos.OffsetHigh?=?0;
	m_wtos.hEvent?=?CreateEvent（NULLTRUEFALSENULL）;
	if（m_wtos.hEvent?==?NULL）
	{
		CloseHandle（m_rdos.hEvent）;
		return?FALSE;
	}
	

	wsprintf（csCom“COM%d“m_bComId）;
	m_hCom?=?CreateFile（csComGENERIC_READ?|?GENERIC_WRITE
????0
????NULL
????OPEN_EXISTING
????FILE_ATTRIBUTE_NORMAL?|?FILE_FLAG_OVERLAPPED
????NULL
	）;

	if（m_hCom?==?INVALID_HANDLE_VALUE）?{
		//dwError?=?GetLastError（）;
	????//?handle?error?
		return?FALSE;
	}
	else
	{
??????//?get?any?early?notifications

??????SetCommMask（?m_hCom?EV_RXCHAR?）?;

??????//?setup?device?buffers

??????SetupComm（?m_hCom?4096?4096?）?;

??????//?purge?any?information?in?the?buffer

??????PurgeComm（?m_hCom?PURGE_TXABORT?|?PURGE_RXABORT?|
??????????????????????????????????????PURGE_TXCLEAR?|?PURGE_RXCLEAR?）?;

??????//?set?up?for?overlapped?I/O
	??DWORD?dwTemp?=?1000?/?（this->m_dwBaudRate?/?8）;
??????CommTimeOuts.ReadIntervalTimeout?=?0xFFFFFFFF?;
??????CommTimeOuts.ReadTotalTimeoutMultiplier?=?0;//（（dwTemp?>?0）???dwTemp?:?1）;
??????CommTimeOuts.ReadTotalTimeoutConstant?=?1000?;
??????//?CBR_9600?is?approximately?1byte/ms.?For?our?purposes?allow
??????//?double?the?expected?time?per?character?for?a?fudge?factor.
??????
??????CommTimeOuts.WriteTotalTimeoutMultiplier?=?2*CBR_9600/this->m_dwBaudRate;//（?npTTYInfo?）?;
??????CommTimeOuts.WriteTotalTimeoutConstant?=?0;//1000?;
??????SetCommTimeouts（?m_hCom?&CommTimeOuts?）?;
	}
	if（!SetupConnection（））
	{
		CloseConnection（）;
		return?FALSE;
	}
	EscapeCommFunction（?m_hCom?SETDTR?）;
	m_bConnected?=?TRUE;
	return?TRUE;
}
BOOL?CComStatus::CloseConnection（）
{
???if?（NULL?==?m_hCo

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????文件????????1586??2000-01-03?00:55??serealcom.clw
?????文件????????3633??1999-08-29?10:34??ReadMe.txt
?????文件?????????541??1999-08-29?10:34??serealcom.dsw
?????文件????????1357??1999-08-29?10:34??serealcom.h
?????文件????????2163??1999-09-12?11:07??serealcom.cpp
?????文件????????1830??1999-09-12?11:31??serealcomDlg.h
?????文件????????6112??1999-09-12?11:35??serealcomDlg.cpp
?????文件????????1054??1999-08-29?10:34??StdAfx.h
?????文件?????????211??1999-08-29?10:34??StdAfx.cpp
?????文件?????????916??1999-09-12?11:10??resource.h
?????文件????????5886??2000-01-03?00:52??serealcom.rc
?????文件??????107520??2000-01-03?01:01??serealcom.ncb
?????文件????????4458??2000-01-03?01:01??serealcom.dsp
?????文件???????36200??2000-01-03?00:52??serealcom.aps
?????文件?????????848??2000-01-03?00:53??serealcom.plg
?????文件????????1904??1999-09-12?11:01??COM232.H
?????文件???????19318??1999-10-13?09:37??Com232.cpp
?????文件???????59904??2000-01-03?01:01??serealcom.opt
?????目錄???????????0??1999-08-29?14:49??res\
?????文件?????????401??1999-08-29?10:34??res\serealcom.rc2
?????文件????????1078??1999-08-29?10:34??res\serealcom.ico
?????文件????????1277??1999-09-12?11:29??ComDlg.h
?????文件????????1769??1999-09-12?11:29??ComDlg.cpp
?????目錄???????????0??2000-01-03?01:00??Debug\
?????文件?????????129??2000-01-03?01:01??串口通訊使用說(shuō)明.txt