www.pudn.com > evc_Chuankou.rar > CESeries.cpp
// CESeries.cpp: implementation of the CCESeries class.
//
//////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "Chuankou.h"
#include "CESeries.h"
#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
//类CCESeries构造函数
CCESeries::CCESeries()
{
m_hComm = INVALID_HANDLE_VALUE;
len=0;
}
//类CCESeries析构函数
CCESeries::~CCESeries()
{
}
/*
*函数介绍：打开串口
*入口参数：
portNo :串口号
baud :波特率
parity :奇偶校验
databits :数据位
stopbits :停止位
*出口参数：(无)
*返回值：TRUE:成功打开串口;FALSE:打开串口失败
*/
BOOL CCESeries::OpenPort(//CWnd* pPortOwner,
UINT portNo , /*串口号*/
UINT baud , /*波特率*/
UINT parity , /*奇偶校验*/
UINT databits , /*数据位*/
UINT stopbits /*停止位*/
)
{
DCB commParam;
TCHAR szPort[15];
// 已经打开的话，直接返回
if (m_hComm != INVALID_HANDLE_VALUE)
{
return TRUE;
}
// ASSERT(pPortOwner != NULL);
ASSERT(portNo > 0 && portNo < 5);
//设置串口名
wsprintf(szPort, L"COM%d:", portNo);
//打开串口
m_hComm = CreateFile(
szPort,
GENERIC_READ | GENERIC_WRITE, //允许读和写
0, //独占方式（共享模式）
NULL,
OPEN_EXISTING, //打开而不是创建（创建方式）
0,
NULL
);
if (m_hComm == INVALID_HANDLE_VALUE)
{
// 无效句柄,返回。
TRACE(_T("CreateFile 返回无效句柄"));
return FALSE;
}
// 得到打开串口的当前属性参数，修改后再重新设置串口。
// 设置串口的超时特性为立即返回。
if (!GetCommState(m_hComm,&commParam))
{
return FALSE;
}
commParam.BaudRate = baud; // 设置波特率
commParam.fBinary = TRUE; // 设置二进制模式，此处必须设置TRUE
commParam.fParity = TRUE; // 支持奇偶校验
commParam.ByteSize = databits; // 数据位,范围:4-8
commParam.Parity = NOPARITY; // 校验模式
commParam.StopBits = stopbits; // 停止位
commParam.fOutxCtsFlow = FALSE; // No CTS output flow control
commParam.fOutxDsrFlow = FALSE; // No DSR output flow control
commParam.fDtrControl = DTR_CONTROL_ENABLE;
// DTR flow control type
commParam.fDsrSensitivity = FALSE; // DSR sensitivity
commParam.fTXContinueOnXoff = TRUE; // XOFF continues Tx
commParam.fOutX = FALSE; // No XON/XOFF out flow control
commParam.fInX = FALSE; // No XON/XOFF in flow control
commParam.fErrorChar = FALSE; // Disable error replacement
commParam.fNull = FALSE; // Disable null stripping
commParam.fRtsControl = RTS_CONTROL_ENABLE;
// RTS flow control
commParam.fAbortOnError = FALSE; // 当串口发生错误，并不终止串口读写
if (!SetCommState(m_hComm, &commParam))
{
TRACE(_T("SetCommState error"));
return FALSE;
}
//设置串口读写时间
COMMTIMEOUTS CommTimeOuts;
GetCommTimeouts (m_hComm, &CommTimeOuts);
CommTimeOuts.ReadIntervalTimeout = MAXDWORD;
CommTimeOuts.ReadTotalTimeoutMultiplier = 0;
CommTimeOuts.ReadTotalTimeoutConstant = 0;
CommTimeOuts.WriteTotalTimeoutMultiplier = 10;
CommTimeOuts.WriteTotalTimeoutConstant = 1000;
if(!SetCommTimeouts( m_hComm, &CommTimeOuts ))
{
TRACE( _T("SetCommTimeouts 返回错误") );
return FALSE;
}
// m_pPortOwner = pPortOwner;
//指定端口监测的事件集
SetCommMask (m_hComm, EV_RXCHAR);
//分配设备缓冲区
SetupComm(m_hComm,512,512);
//初始化缓冲区中的信息
PurgeComm(m_hComm,PURGE_TXCLEAR|PURGE_RXCLEAR);
// m_hReadCloseEvent = CreateEvent(NULL,TRUE,FALSE,NULL);
// m_hWriteCloseEvent = CreateEvent(NULL,TRUE,FALSE,NULL);
//创建读串口线程
// m_hReadThread = CreateThread(NULL,0,ReadThreadFunc,this,0,&m_dwReadThreadID);
//创建写串口线程
// m_hWriteThread = CreateThread(NULL,0,WriteThreadFunc,this,0,&m_dwWriteThreadID);
TRACE(_T("串口打开成功"));
return TRUE;
}
/*
*函数介绍：关闭串口
*入口参数：(无)
*出口参数：(无)
*返回值： (无)
*/
void CCESeries::ClosePort()
{
//表示串口还没有打开
if (m_hComm == INVALID_HANDLE_VALUE)
{
return ;
}
//关闭读线程
CloseReadThread();
//关闭串口
if (!CloseHandle (m_hComm))
{
m_hComm = INVALID_HANDLE_VALUE;
return ;
}
m_hComm = INVALID_HANDLE_VALUE;
// AfxMessageBox(_T("ClosePort"));
}
//关闭读线程
void CCESeries::CloseReadThread()
{
SetEvent(m_hReadCloseEvent);
//设置所有事件无效无效
SetCommMask(m_hComm, 0);
//清空所有将要读的数据
PurgeComm( m_hComm, PURGE_RXCLEAR );
//等待10秒，如果读线程没有退出，则强制退出
if (WaitForSingleObject(m_hReadThread,10000) == WAIT_TIMEOUT)
{
TerminateThread(m_hReadThread,0);
}
m_hReadThread = NULL;
}
/*
*函数介绍：设置串口读取、写入超时
*入口参数：CommTimeOuts : 指向COMMTIMEOUTS结构
*出口参数：(无)
*返回值：TRUE:设置成功;FALSE:设置失败
*/
BOOL CCESeries::SetSeriesTimeouts(COMMTIMEOUTS CommTimeOuts)
{
ASSERT(m_hComm != INVALID_HANDLE_VALUE);
return SetCommTimeouts(m_hComm,&CommTimeOuts);
}
//串口读线程函数
DWORD CCESeries::ReadThreadFunc(LPVOID lparam)
{
CCESeries *ceSeries = (CCESeries*)lparam;
DWORD evtMask;
BYTE * readBuf = NULL;//读取的字节
DWORD actualReadLen=0;//实际读取的字节数
DWORD willReadLen;
DWORD dwReadErrors;
COMSTAT cmState;
// 清空缓冲，并检查串口是否打开。
ASSERT(ceSeries->m_hComm !=INVALID_HANDLE_VALUE);
//清空串口
PurgeComm(ceSeries->m_hComm, PURGE_RXCLEAR | PURGE_TXCLEAR );
SetCommMask (ceSeries->m_hComm, EV_RXCHAR | EV_CTS | EV_DSR );
while (TRUE)
{
if (WaitCommEvent(ceSeries->m_hComm,&evtMask,0))
{
SetCommMask (ceSeries->m_hComm, EV_RXCHAR | EV_CTS | EV_DSR );
//表示串口收到字符
if (evtMask & EV_RXCHAR)
{
ClearCommError(ceSeries->m_hComm,&dwReadErrors,&cmState);
willReadLen = cmState.cbInQue ;
if (willReadLen <= 0)
{
continue;
}
readBuf = new BYTE[willReadLen];
ReadFile(ceSeries->m_hComm, readBuf, willReadLen, &actualReadLen,0);
//如果读取的数据大于0，
if (actualReadLen>0)
{
// ceSeries->read(ceSeries->m_pPortOwner,readBuf,actualReadLen);
// AfxMessageBox(_T("ol"));
//触发读取回调函数
ceSeries->m_OnSeriesRead(ceSeries->m_pPortOwner,readBuf,actualReadLen);
// AfxMessageBox(_T("ol"));
}
}
}
//如果收到读线程退出信号，则退出线程
if (WaitForSingleObject(ceSeries->m_hReadCloseEvent,500) == WAIT_OBJECT_0)
{ AfxMessageBox(_T("exit"));
break;
}
}
return 0;
}
//私用方法，用于向串口写数据，被写线程调用
BOOL CCESeries::WritePort(HANDLE hComm,const BYTE *buf,DWORD bufLen)
{
// AfxMessageBox( _T("WritePort") );
DWORD dwNumBytesWritten;
DWORD dwHaveNumWritten =0 ; //已经写入多少
ASSERT(hComm != INVALID_HANDLE_VALUE);
do
{
// AfxMessageBox( _T("gogo") );
if (WriteFile (hComm, //串口句柄
buf+dwHaveNumWritten, //被写数据缓冲区
bufLen- dwHaveNumWritten, //被写数据缓冲区大小
&dwNumBytesWritten, //函数执行成功后，返回实际向串口写的个数
NULL)) //此处必须设置NULL
{
dwHaveNumWritten = dwHaveNumWritten + dwNumBytesWritten;
//写入完成
if (dwHaveNumWritten == bufLen)
{
// AfxMessageBox( _T("yes ok") );
return TRUE;
}
// Sleep(10);
}
else
{
return FALSE;
}
}while (TRUE);
return TRUE;
}
/*
BOOL CCESeries::WriteAByte(const BYTE& WriteData)
{
// AfxMessageBox(L"WriteAByte");
//INT rc;
BOOL rc;
DWORD cBytes=0;
// ASSERT(m_hComm != INVALID_HANDLE_VALUE);
//AfxMessageBox(_T("串口打开"));
rc = WriteFile(m_hComm,&WriteData,1,&cBytes,NULL);
if(!rc)
{
//不能写数据
MessageBox(NULL,TEXT("con faikle!"),TEXT("faile"),MB_OK);
ClosePort();
return false;
}
if(cBytes == 1)
{
// AfxMessageBox(L"yes");
return true;
}
else
{
MessageBox(NULL,_T("向串口写入一个字节失败"),_T("error"),MB_ICONEXCLAMATION);
ClosePort();
return false;
}
}
BOOL CCESeries::ReadAByte(BYTE& ReadData)
{
//INT rc;
BOOL rc;
DWORD cBytes;
// PurgeComm(m_hComm, PURGE_RXCLEAR | PURGE_TXCLEAR );
rc = ReadFile(m_hComm,&ReadData,1,&cBytes,NULL);
if(!rc)
{
//不能写数据
MessageBox(NULL,TEXT("不能读串口数据!"),TEXT("错误！"),MB_OK);
// dwBytesWritten=0;
}
if(cBytes == 1)
{
return true;
}
else
{
// MessageBox(NULL,_T("an error occured while reading a byte to port"),_T("error"),MB_ICONEXCLAMATION);
return false;
}
}
*/
void CCESeries::SetDTREnable(BOOL State)
{
if(State)
EscapeCommFunction(m_hComm,SETDTR);
else
EscapeCommFunction(m_hComm,CLRDTR);
}
void CCESeries::SetRTSEnable(BOOL State)
{
if(State)
EscapeCommFunction(m_hComm,SETRTS);
else
EscapeCommFunction(m_hComm,CLRRTS);
}
BOOL CCESeries::GetCTSState()
{
DWORD State;
State = MS_CTS_ON;
GetCommModemStatus(m_hComm,&State);
if(State&MS_CTS_ON)
return TRUE;
else
return FALSE;
}
/*
BOOL CCESeries::ReadPort(HANDLE hComm,BYTE *buf,UINT bufLen)
{
DWORD leng=0;
DWORD willReadLen;
DWORD dwReadErrors;
COMSTAT cmState;
ASSERT(m_hComm != INVALID_HANDLE_VALUE);
//BYTE *readbuf=NULL;
//readbuf= new BYTE[bufLen];
for(int i=1;i>0;i++)
{
ClearCommError(m_hComm,&dwReadErrors,&cmState);
willReadLen = cmState.cbInQue;
if(willReadLen<=0)
{
Sleep(1);
continue;
}
BOOL rc;
DWORD cBytes=0;
buf= new BYTE[willReadLen];
rc = ReadFile(m_hComm,buf,willReadLen,&cBytes,NULL);
if(!rc)
{
continue;
}
if(cBytes >0)
{
return TRUE;
}
}
return TRUE;
}
BOOL CCESeries::CWritePort(HANDLE hComm, const WCHAR* buf, DWORD bufLen)
{
DWORD dwNumBytesWritten=0;
DWORD dwHaveNumWritten =0 ; //已经写入多少
ASSERT(hComm != INVALID_HANDLE_VALUE);
do
{
// AfxMessageBox( _T("gogo") );
if (WriteFile (hComm, //串口句柄
buf+dwHaveNumWritten, //被写数据缓冲区
bufLen- dwHaveNumWritten, //被写数据缓冲区大小
&dwNumBytesWritten, //函数执行成功后，返回实际向串口写的个数
NULL)) //此处必须设置NULL
{
dwHaveNumWritten = dwHaveNumWritten + dwNumBytesWritten;
//写入完成
if (dwHaveNumWritten == bufLen)
{
//AfxMessageBox( _T("yes ok") );
return TRUE;
}
Sleep(10);
}
else
{
return FALSE;
}
}while (TRUE);
return TRUE;
}
*/
void CCESeries::OpenThread(CWnd* pPortOwner)
{
m_pPortOwner = pPortOwner;
m_hReadCloseEvent = CreateEvent(NULL,TRUE,FALSE,NULL);
//创建读串口线程
m_hReadThread = CreateThread(NULL,0,ReadThreadFunc,this,0,&m_dwReadThreadID);
}
void CCESeries::read(CWnd* pPortOwner,BYTE *buf,UINT bufLen)
{
CString str,str1,str2;
BYTE *pData;
str2.Format(_T("%d"),len);
str.Format(_T("%s"),buf);
pPortOwner->GetDlgItem(IDC_EDIT1)->GetWindowText(str1);
str1+=str;
{
CByteArray hexdata;
int Len=String2Hex(str1,hexdata);
///bufLen=len;
pData=new BYTE[bufLen];
for(int k=0;kOnSeriesRead(pPortOwner,buf,bufLen);
pPortOwner->GetDlgItem(IDC_EDIT1)->SetWindowText(str1);
pPortOwner->GetDlgItem(IDC_EDIT4)->SetWindowText(str2);
return;
}
int CCESeries::String2Hex(CString str, CByteArray &senddata)
{
int hexdata,lowhexdata;
int hexdatalen=0;
int len=str.GetLength();
senddata.SetSize(len/2);
for(int i=0;i=len)
break;
lstr=str[i];
// AfxMessageBox(str[i]);
hexdata=ConvertHexChar(hstr);
lowhexdata=ConvertHexChar(lstr);
if((hexdata==16)||(lowhexdata==16))
break;
else
hexdata=hexdata*16+lowhexdata;
i++;
senddata[hexdatalen]=(char)hexdata;
hexdatalen++;
}
senddata.SetSize(hexdatalen);
return hexdatalen;
}
char CCESeries::ConvertHexChar(TCHAR ch)
{
if((ch>='0')&&(ch<='9'))
return ch-0x30;
else if((ch>='A')&&(ch<='F'))
return ch-'A'+10;
else if((ch>='a')&&(ch<='f'))
return ch-'a'+10;
else return(-1);
}