WINCE 5.0 VC串口通信类（修正版)
终极管理员 知识笔记 40阅读
最近因为工作需要，在网上找了个副主席的串口通讯类，修改后编译通过，现在贴出来共享原文：CESeries.h文件ce系列h//ce系列h :接口。////////////////////////////////////////,如果！已定义(AFX _ ce series _ H _ _ 1952d 4 CB _ F6 a6 _ 489 b _ 80 B2 _ FD 59 f 845 BC 86 _ _ INCLUDED _)# definea FX _ ce series _ H _ _ 1952d 4 CB _ F6 a6 _ 489 b _ 80 B2 _ FD 59 f 845 BC 86 _ _ INCLUDED _ # if _ MSC _ ver 1000 # pragma olor 3360 rgba(0，0，1)'once#endif//_MSC定义串口接收数据函数类型typedefvoid(CALLBACK * on series read)(CWnd *，BYTE*buf，intbufLen)；//CE串口通讯类类CCE系列{公： CCE系列()；虚拟~ CCE系列()；//打开串口B
OOL OpenPort(CWnd* pPortOwner, //使用串口类，窗体句柄UINT portNo = 1, //串口号
UINT baud = 19200, //波特率
UINT parity = NOPARITY, //奇偶校验
UINT databits = 8, //数据位
UINT stopbits = 1 //停止位
);
//关闭串口
void ClosePort();
//设置串口读取、写入超时
BOOL SetSeriesTimeouts(COMMTIMEOUTS CommTimeOuts);
//向串口写入数据
BOOL WritePort(const BYTE *buf,DWORD bufLen);
//串口读取回调函数
ONSERIESREAD m_OnSeriesRead;
private:
//串口读线程函数
static DWORD WINAPI ReadThreadFunc(LPVOID lparam);
//串口写线程函数
static DWORD WINAPI WriteThreadFunc(LPVOID lparam);
//向串口写入数据
static BOOL WritePort(HANDLE hComm,const BYTE *buf,DWORD bufLen);
//关闭读线程
void CloseReadThread();
//关闭写线程
void CloseWriteThread();
//已打开的串口句柄
HANDLE m_hComm;
CWnd* m_pPortOwner;
//读写线程句柄
HANDLE m_hReadThread;
HANDLE m_hWriteThread;
//读写线程ID标识
DWORD m_dwReadThreadID;
DWORD m_dwWriteThreadID;
//读线程退出事件
HANDLE m_hReadCloseEvent;
//写线程退出事件
HANDLE m_hWriteCloseEvent;
};
#endif
// !defined(AFX_CESERIES_H__1952D4CB_F6A6_489B_80B2_FD59F845BC86__INCLUDED_)
CESeries.cpp 文件
gggCESeries.cpp// CESeries.cpp: implementation of the CCESeries class.
#include "stdafx.h"
#include "CESeries.h"
#ifdef _DEBUG
#undef THIS_;
static char THIS_FILE[]=__;
#define new DEBUG_NEW
#endif
//定义向写线程发送的消息常量
const int CM_THREADCOMMWRITE = WM_USER+110;
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
//类CCESeries构造函数
CCESeries::CCESeries()
{
m_hComm = INVALID_HANDLE_VALUE;
}
//类CCESeries析构函数
CCESeries::~CCESeries()
{
}
//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;
}
//关闭写线程
void CCESeries::CloseWriteThread()
{
SetEvent(m_hWriteCloseEvent);
//清空所有将要写的数据
PurgeComm( m_hComm, PURGE_TXCLEAR );
//等待10秒，如果写线程没有退出，则强制退出
if (WaitForSingleObject(m_hWriteThread,10000) == WAIT_TIMEOUT)
{
TerminateThread(m_hWriteThread,0);
}
m_hWriteThread = NULL;
}
/*
*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();
//关闭写线程
CloseWriteThread();
//关闭串口
if (!CloseHandle (m_hComm))
{
m_hComm = INVALID_HANDLE_VALUE;
return ;
}
}
/*
*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);
}
/*
*函数介绍：打开串口
*入口参数：pPortOwner :使用此串口类的窗体句柄
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, /*使用串口类，窗体句柄*/
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。
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)) { 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 ))
{
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);
return TRUE;
}
//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];
Read->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;
}
//串口写线程函数
DWORD CCESeries::WriteThreadFunc(LPVOID lparam)
{
CCESeries *ceSeries = (CCESeries*)lparam;
MSG msg; DWORD dwWriteLen = 0; BYTE * buf= new BYTE();
while (TRUE) {
//如果捕捉到线程消息
if (PeekMessage(&msg, 0, 0, 0, PM_REMOVE))
{
if (msg.hwnd != 0 ) {
TranslateMessage(&msg);
DispatchMessage(&msg);
continue;
}
if (msg.message==CM_THREADCOMMWRITE)
{
//向串口写
buf = (BYTE*)msg.lParam; dwWriteLen = msg.wParam;
//向串口写
WritePort(ceSeries->m_hComm,buf,dwWriteLen);
//删除动态分配的内存
delete[] buf;
}
}
//如果收到写线程退出信号，则退出线程
if (WaitForSingleObject(ceSeries->m_hWriteCloseEvent,500) == WAIT_OBJECT_0)
{
break;
}
ceSeries->m_hWriteThread = NULL;
}
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)
{
DWORD dwNumBytesWritten;
DWORD dwHaveNumWritten =0 ;
//已经写入多少
ASSERT(hComm!=INVALID_HANDLE_VALUE);
CString s(buf);
AfxMessageBox(s);
do {
if (Write;(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)
{ break; }
Sleep(10);
}
else { return FALSE; }
}while (TRUE);
return TRUE;
}
/*
*函数介绍：向串口发送数据
*入口参数：buf : 将要往串口写入的数据的缓冲区
bufLen : 将要往串口写入的数据的缓冲区长度
*出口参数：(无)
*返回值： TRUE:表示成功地将要发送的数据传递到写线程消息队列。
FALSE:表示将要发送的数据传递到写线程消息队列失败。
注：此处的TRUE,不直接代表数据一定成功写入到串口了。
*/
BOOL CCESeries::WritePort(const BYTE *buf,DWORD bufLen)
{
//将要发送的数据传递到写线程消息队列
return PostThreadMessage(m_dwWriteThreadID,CM_THREADCOMMWRITE,WPARAM(bufLen), LPARAM(buf));
}
示例代码：
m_ceSeries.ClosePort();
m_ceSeries.OpenPort(this,1,19200,NOPARITY,8,1);
CString strUnlogall("UNLOGALL\r\n");
int length=strUnlogall.GetLength();
char *cUnlogall=new char[length+1];
WideCharToMultiByte(CP_ACP, 0, (const unsigned short*)strUnlogall,
-1, cUnlogall, length+1, NULL, NULL);
if (!m_ceSeries.WritePort((BYTE*)cUnlogall,length+1))
{
AfxMessageBox(L"写入失败");
}
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