wince下比较好用的串口接收线程

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)
{
//触发读取回调函数

ceSeries->m_OnSeriesRead(ceSeries->m_pPortOwner,readBuf,actualReadLen);
}
}
}
//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)
{
break;
}
}
return 0;