scommtestdlg.cpp

基于DIALOG的MSCOMM串口通信

// SCommTestDlg.cpp : implementation file
//

#include "stdafx.h"
#include "SCommTest.h"
#include "SCommTestDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	char ConvertHexChar();
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CSCommTestDlg dialog

CSCommTestDlg::CSCommTestDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CSCommTestDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CSCommTestDlg)
	m_rxdata = _T("");
	m_txdata = _T("");
	m_bAutoSend = FALSE;
	m_para = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CSCommTestDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CSCommTestDlg)
	DDX_Control(pDX, IDC_EXIT, m_exit);
	DDX_Control(pDX, IDC_SETUPCOM, m_setupcom);
	DDX_Control(pDX, IDC_OPENCOM, m_opencom);
	DDX_Control(pDX, IDC_CLOSECOM, m_closecom);
	DDX_Control(pDX, IDC_CHECK_HEXSEND, m_ctrlHexSend);
	DDX_Control(pDX, IDC_MSCOMM, m_ctrlComm);
	DDX_Text(pDX, IDC_EDIT_RXDATA, m_rxdata);
	DDX_Text(pDX, IDC_EDIT_TXDATA, m_txdata);
	DDX_Check(pDX, IDC_CHECK_AUTOSEND, m_bAutoSend);
	DDX_Text(pDX, IDC_PARA, m_para);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CSCommTestDlg, CDialog)
	//{{AFX_MSG_MAP(CSCommTestDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON_SEND, OnButtonSend)
	ON_WM_TIMER()
	ON_BN_CLICKED(IDC_CHECK_AUTOSEND, OnCheckAutosend)
	ON_BN_CLICKED(IDC_SETUPCOM, OnSetupcom)
	ON_BN_CLICKED(IDC_OPENCOM, OnOpencom)
	ON_BN_CLICKED(IDC_CLOSECOM, OnClosecom)
	ON_BN_CLICKED(IDC_BUTTON_CLEAR, OnButtonClear)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CSCommTestDlg message handlers

BOOL CSCommTestDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	//if(m_ctrlComm.GetPortOpen())
        //m_ctrlComm.SetPortOpen(FALSE);

    //m_ctrlComm.SetCommPort(1); //选择com1
    if( !m_ctrlComm.GetPortOpen())
		m_ctrlComm.SetPortOpen(TRUE);//打开串口
    else
	{
        AfxMessageBox("cannot open serial port");
		m_opencom.EnableWindow(false);//使打开串口按钮无效
		m_closecom.EnableWindow(false);//是关闭串口按钮无效
		m_setupcom.EnableWindow(false);//使设置按钮无效
		return -1;
	}
	/*//获得波特率
	CString strSetting="";
	m_ComPara.BaudCursel=m_CtlBaudRate.GetCurSel();
	m_CtlBaudRate.GetLBText(m_ComPara.BaudCursel,strBaudRate);
	strSetting=strBaudRate;

	//获得校验位
	m_ComPara.ParityCursel=m_CtlParity.GetCurSel();
	switch(m_ComPara.ParityCursel)
	{
	case 0:
		strParity="e";
		break;
	case 1:
		strParity="n";
		break;
	case 2:
		strParity="o";
		break;
	}
	strSetting+=",";
	strSetting+=strParity;

	//获得数据位
	m_ComPara.DataCursel=m_CtlData.GetCurSel();
	m_CtlData.GetLBText(m_ComPara.DataCursel,strData);
	strSetting+=",";
	strSetting+=strData;
 
	//获得停止位
	m_ComPara.StopBitCursel=m_CtlStopBit.GetCurSel();
	m_CtlStopBit.GetLBText(m_ComPara.StopBitCursel,strStopBit);
	strSetting+=",";
	strSetting+=strStopBit;	

	m_ctrlComm.SetSettings("9600,n,8,1");//strSetting); //波特率9600，无校验，8个数据位，1个停止位 
	m_ctrlComm.SetInBufferSize(14);//设置输入缓冲区大小
	m_ctrlComm.SetOutBufferSize(512);//设置输出缓冲区大小
	m_ctrlComm.SetInBufferCount(0);// 清空接收缓冲区
	m_ctrlComm.SetInputMode(1);//表示以二进制方式检取数据
	m_ctrlComm.SetInputLen(14);//设置当前接收区数据长度为0,设置Input一次从接收缓冲区读取的字节数
	m_ctrlComm.SetRThreshold(14);//1表示串口接收缓冲区中有多于或等于6个字节时将引发一个接收数据的OnComm事件
*/
   /* m_ctrlComm.SetSettings("9600,n,8,1"); //波特率9600，无校验，8个数据位，1个停止位 
	m_ctrlComm.SetInBufferSize(1024);//指定接收缓冲区大小
	m_ctrlComm.SetInBufferCount(0);//清空接收缓冲区
    m_ctrlComm.SetInputMode(1); //1：表示以二进制方式检取数据
    m_ctrlComm.SetRThreshold(1); 
//参数1表示每当串口接收缓冲区中有多于或等于1个字符时将引发一个接收数据的OnComm事件
    m_ctrlComm.SetInputLen(0); //设置当前接收区数据长度为0*/
    
	m_ctrlComm.GetInput();//先预读缓冲区以清除残留数据

	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CSCommTestDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CSCommTestDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CSCommTestDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

BEGIN_EVENTSINK_MAP(CSCommTestDlg, CDialog)
    //{{AFX_EVENTSINK_MAP(CSCommTestDlg)
	ON_EVENT(CSCommTestDlg, IDC_MSCOMM, 1 /* OnComm */, OnOnCommMscomm, VTS_NONE)
	//}}AFX_EVENTSINK_MAP
END_EVENTSINK_MAP()

void CSCommTestDlg::OnOnCommMscomm() 
{
	// TODO: Add your control notification handler code here
	//VARIANT variant_inp;
    COleVariant myVar;
    COleSafeArray safearray_inp;
    LONG len,k;
    BYTE rxdata[2048]; //设置BYTE数组 An 8-bit integerthat is not signed.
    CString strtemp,AppendFormat;
    if(m_ctrlComm.GetCommEvent()==2) //事件值为2表示接收缓冲区内有字符
    {             ////////
        //variant_inp=m_ctrlComm.GetInput(); //读缓冲区
		myVar.Attach(m_ctrlComm.GetInput());//---------*
        //safearray_inp= variant_inp; //VARIANT型变量转换为ColeSafeArray型变量
		safearray_inp = myVar; //COleVariant型变量转换为ColeSafeArray型变量
        len=safearray_inp.GetOneDimSize(); //得到有效数据长度
        for(k=0;k<len;k++)
            safearray_inp.GetElement(&k,rxdata+k);//转换为BYTE型数组
        for(k=0;k<len;k++) //将数组转换为Cstring型变量
        {
            BYTE bt=*(char*)(rxdata+k); //字符型

            strtemp.Format("%c",bt); //将字符送入临时变量strtemp存放
            m_rxdata+=strtemp; //加入接收编辑框对应字符串 
        }
		/*rxdata[len]='\0'; // rxdata加个字符串结束符 
        m_rxdata.AppendFormat(_T("%s"),rxdata);
		// 此句把整个rxdata数组内容作为字符串追加入m_Show，字符串长度为len。*/
    }
    UpdateData(FALSE); //更新编辑框内容
}

void CSCommTestDlg::OnButtonSend() 
{
	// TODO: Add your control notification handler code here
	UpdateData(TRUE); //读取编辑框内容
    //m_ctrlComm.SetOutput(COleVariant(m_txdata));//发送数据
    if(m_ctrlHexSend.GetCheck())
	{
        CByteArray hexdata;
        int len=String2Hex(m_txdata,hexdata); //此处返回的len可以用于计算发送了多少个十六进制数
        m_ctrlComm.SetOutput(COleVariant(hexdata)); //发送十六进制数据
	}
    else 
    m_ctrlComm.SetOutput(COleVariant(m_txdata));//发送ASCII字符数据

}

//由于这个转换函数的格式限制，在发送框中的十六制字符应该每两个字符之间插入一个空隔
//如：A1 23 45 0B 00 29
//CByteArray是一个动态字节数组，可参看MSDN帮助
int CSCommTestDlg::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;)
	{
        char lstr,hstr=str[i];
        if(hstr==' ')
		{
           i++;
           continue;
		}
        i++;
        if(i>=len)
          break;
        lstr=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;
    return  true;
}

void CSCommTestDlg::OnOK() 
{
	// TODO: Add extra validation here
	
	CDialog::OnOK();
}

//这是一个将字符转换为相应的十六进制值的函数
//好多C语言书上都可以找到
//功能：若是在0-F之间的字符，则转换为相应的十六进制字符，否则返回-1
//DEL char CSCommTestDlg::ConvertHexChar(char ch)
//DEL {
//DEL     if((ch>='0')&&(ch<='9'))
//DEL     return ch-0x30;
//DEL     else if((ch>='A')&&(ch<='F'))
//DEL     return ch-'A'+10;
//DEL     else if((ch>='a')&&(ch<='f'))
//DEL     return ch-'a'+10;
//DEL     else return (-1);
//DEL }




char CSCommTestDlg::ConvertHexChar(char 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);
}

void CSCommTestDlg::OnTimer(UINT nIDEvent) 
{
	// TODO: Add your message handler code here and/or call default
	OnButtonSend();
	CDialog::OnTimer(nIDEvent);
}

void CSCommTestDlg::OnCheckAutosend() 
{
	// TODO: Add your control notification handler code here
	m_bAutoSend=!m_bAutoSend;
    if(m_bAutoSend)
	{
        SetTimer(1,1000,NULL);//时间为1000毫秒
	}
    else
	{
        KillTimer(1);  //取消定时
	}
}

void CSCommTestDlg::OnSetupcom() 
{
	// TODO: Add your control notification handler code here
	CString strStatus,strTemp;
	double dblBaud;
	if(mySetupDlg.DoModal()==IDOK)
	{
		myCom=mySetupDlg.m_Com+1;//求取串口编号
		dblBaud=pow(2,(double)mySetupDlg.m_BaudRate);//求取波特率
		dblBaud=19200/dblBaud;
		strStatus.Format("%.0f",dblBaud);
		myBaudRate=strStatus;

		switch(mySetupDlg.m_Parity)
		{
		case 0:
			{
				myParity="N";
				break;
			}
		case 1:
			{
				myParity="O";
				break;
			}
		case 2:
			{
				myParity="E";
				break;
			}
		}
		strStatus="COM";
		strTemp.Format("%d",myCom);
		strStatus+=strTemp;
		strStatus+=",";
		strStatus+=myBaudRate;
		strStatus+=",";
		strStatus+=myParity;
		strStatus+=",8,1";
		m_para=strStatus;//求取静态文本显示内容
		UpdateData(false);
	}
}

void CSCommTestDlg::OnOpencom() 
{
	// TODO: Add your control notification handler code here
	CString strPara;//串口参数
	m_ctrlComm.SetCommPort(myCom);//指定串口号
	strPara=myBaudRate;
	strPara+=",";
	strPara+=myParity;
	strPara+=",8,1";
	m_ctrlComm.SetSettings(strPara);
	m_ctrlComm.SetInBufferSize(1024);
	m_ctrlComm.SetInBufferCount(0);
	m_ctrlComm.SetInputMode(1);
	m_ctrlComm.SetInputLen(0);
	m_ctrlComm.SetRThreshold(1);
	m_ctrlComm.SetPortOpen(1);
	m_opencom.EnableWindow(FALSE);
	m_closecom.EnableWindow(FALSE);
	m_setupcom.EnableWindow(FALSE);
	m_exit.EnableWindow(FALSE);
	AfxMessageBox("串口打开成功！");
}

void CSCommTestDlg::OnClosecom() 
{
	// TODO: Add your control notification handler code here
	m_ctrlComm.SetPortOpen(0);
	AfxMessageBox("串口关闭成功！");
	m_opencom.EnableWindow(TRUE);//使打开串口按钮生效
	m_closecom.EnableWindow(FALSE);//是关闭串口按钮无效
	m_setupcom.EnableWindow(TRUE);//使设置按钮生效
	m_exit.EnableWindow(TRUE);//使退出按钮生效
}

void CSCommTestDlg::OnButtonClear() 
{
	// TODO: Add your control notification handler code here
	
}