repos_ecs/Device/modbusrtu/Protocol.cpp

// Protocol.cpp: implementation of the CProtocol class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "Protocol.h"
#include "CommAsyn.h"

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

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

CProtocol::CProtocol()
{
	m_pComm=NULL;
}

CProtocol::~CProtocol()
{

}

int CProtocol::ReadMessage(BYTE *pBuf, int len)
{
	if( !AfxIsValidAddress(pBuf, len, FALSE ) )
		return 0;

	if( !m_pComm )
		return 0;

	if( !::AfxIsValidAddress(m_pComm, sizeof(CCommAsyn), FALSE ) )
	{
		return 0;
	}

	int iResult=m_pComm->Read(pBuf,len);
	if(iResult>len)
		iResult=len;

	return iResult;
}

int CProtocol::WriteMessage(BYTE *pBuf, int len)
{
	if( !m_pComm ) return 0;
	if( !::AfxIsValidAddress(m_pComm, sizeof(CCommAsyn), FALSE ) )
	{
		return 0;
	}
	int iResult = m_pComm->Write(pBuf,len);

	return iResult;
}

BOOL CProtocol::InitParam(PPORTPARAM pPortParam, CCommAsyn *pComm)
{
	return FALSE;
}