receivesqldate.cpp

一个canbus通讯软件源代码

// ReceiveSQLDate.cpp: implementation of the CReceiveSQLDate class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "test.h"
#include "ReceiveSQLDate.h"

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

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

CReceiveSQLDate::CReceiveSQLDate()
{
	
	m_boolIsChange=true;
	m_boolIsRecieve=true;
	m_longCount=1;

}

CReceiveSQLDate::~CReceiveSQLDate()
{

}

void CReceiveSQLDate::AddTheReaderID(DWORD costwordReaderID,int coststate)//只有两种情况,1,change与receive分别为true,true时ID到last  反之取first
{
	if (!m_boolIsChange)
	{
		return;
	}
	if (m_dwordReaderID_first==costwordReaderID)
	{
	
		CTimeSpan time_spantime;
		time_spantime=CTime::GetCurrentTime()- m_time_first_last;
		LONG long_temp_sum = time_spantime.GetTotalMinutes();
       m_time_first_last =CTime::GetCurrentTime();
	  
		if (long_temp_sum>10)//如果两次收到时间相差10分钻,那么就认为不是一种新的数据.
		{
			m_boolIsChange=true;
			m_dwordReaderID_last=costwordReaderID;
			m_time_last=CTime::GetCurrentTime();
			m_time_first=m_time_first_last;

			
		} 	
		else
		{
			m_boolIsChange=false;
			m_time_last=CTime::GetCurrentTime();
		}	
		m_bool_state=coststate;
		m_boolIsRecieve=true;
		
		return;
	}
	if (!m_boolIsRecieve)
	{
		m_dwordReaderID_last=costwordReaderID;
		m_boolIsRecieve=true;
		m_time_last=CTime::GetCurrentTime();
		m_bool_state=coststate;
	}
		
	
}

void CReceiveSQLDate::InitializationDate()
{

	m_boolIsChange=true;
	m_boolIsRecieve=false;

}

void CReceiveSQLDate::SureTheDate()//计算周期内数据改变.
{
	
	if (m_boolIsRecieve)
	{
		if (m_boolIsChange)
		{
			if (m_boolfistadd)
			{
				m_boolfistadd=false;
				return;
			}
			CTimeSpan time_spantime;
			time_spantime=CTime::GetCurrentTime()-m_time_first_last;
			if (time_spantime.GetTotalMinutes()<2&&m_dwordReaderID_last!=m_dwordReaderID_first)
			{
			
					m_boolIsRecieve=false;
					return;
		
		
			}
			m_dwordReaderID_first=m_dwordReaderID_last;
			m_time_first=m_time_last;
			m_time_first_last=m_time_last;
			m_longCount=1;
		} 
		else
		{
			m_longCount++;
		}
	}

}