comfile.cpp

modbus通讯

// ComFile.cpp: implementation of the CComFile class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "VcSample.h"
#include "ComFile.h"
#include  <io.h>


#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

//////////////////////////////////////////////////////////////////////
// 操作COM配置文件
//作者:zhuxiaoliang
//时间:2006-12-20
//////////////////////////////////////////////////////////////////////
#define COMFILE "com.ini"

CComFile::CComFile()
{
}

CComFile::~CComFile()
{

}
/*
 *	判断文件是否存在
 */

BOOL CComFile::openComFile()
{    
	GetCurrentDirectory(MAX_PATH,m_strFileName.GetBuffer(MAX_PATH));
	m_strFileName.Format("%s\\%s",m_strFileName,COMFILE);
	int nResult=0;
	nResult=access(COMFILE,0);
    if(_access(COMFILE,0)==-1)
	{
		return false;	
	}
	
	return true;
}
/*
 *	获取配置文件的信息
 */
strComInfo CComFile::getComInfo()
{
	//串口号、停止位、校验码、格式
	CString strComName,strStopBits,strParity,strFormats;
	//数据位、次数、超时时间、波特率
    int nDataBits,ntimes,nOverTime,nPersScond;
	//获取串口号
	GetPrivateProfileString("com","comnumber","com1",strComName.GetBuffer(5),5,m_strFileName);
	//获取停止位
	GetPrivateProfileString("com","stopbits","1",strStopBits.GetBuffer(2),2,m_strFileName);
	//获取校验码
	GetPrivateProfileString("com","parity","偶校验",strParity.GetBuffer(7),7,m_strFileName);
	//获取格式
	GetPrivateProfileString("com","formats","RTU",strFormats.GetBuffer(6),6,m_strFileName);
     //获取数据位
	nDataBits=GetPrivateProfileInt("com","databits",4,m_strFileName);
	//获取次数
	ntimes=GetPrivateProfileInt("com","times",1,m_strFileName);
	//获取超时时间
	nOverTime=GetPrivateProfileInt("com","overtime",1000,m_strFileName);
	//获取波特率
	nPersScond=GetPrivateProfileInt("com","persecond",19200,m_strFileName);
   //赋值配置文件信息的结构begin
	m_strCom.strComNumber=strComName;
	m_strCom.nDataBits=nDataBits;
	m_strCom.nOverTime=nOverTime;
	m_strCom.ntimes=ntimes;
	m_strCom.nPersScond=nPersScond;
	m_strCom.strFormats=strFormats;
	m_strCom.strStopBits=strStopBits;
	m_strCom.strParity=strParity;
	//赋值配置文件信息的结构end
	return m_strCom;
}
/*
 *	写COM配置文件
 */
void CComFile::WriteComInfo(strComInfo info)
{
	//写串口号
	WritePrivateProfileString("com","comnumber",info.strComNumber,m_strFileName);
	//写停止位
	WritePrivateProfileString("com","stopbits",info.strStopBits,m_strFileName);
	//写校验位
	WritePrivateProfileString("com","parity",info.strParity,m_strFileName);
	//写格式
	WritePrivateProfileString("com","formats",info.strFormats,m_strFileName);
    CString strDataBits,strTims,strOverTime,strPerSecond;
	strDataBits.Format("%d",info.nDataBits);
	strTims.Format("%d",info.ntimes);
	strOverTime.Format("%d",info.nOverTime);
	strPerSecond.Format("%d",info.nPersScond);
	//写数据位
	WritePrivateProfileString("com","databits",strDataBits,m_strFileName);
	//写超时时间
	WritePrivateProfileString("com","overtime",strOverTime,m_strFileName);
	//写次数
	WritePrivateProfileString("com","times",strTims,m_strFileName);
	//写波特率
	WritePrivateProfileString("com","persecond",strPerSecond,m_strFileName);
}