serialcommdlg.cpp

一个我用VC编写的串行通讯编程。

// SerialCommDlg.cpp : implementation file
//

#include "stdafx.h"
#include "SerialComm.h"
#include "SerialCommDlg.h"
// #include "5510drv.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:
	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()

/////////////////////////////////////////////////////////////////////////////
// CSerialCommDlg dialog

CSerialCommDlg::CSerialCommDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CSerialCommDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CSerialCommDlg)
	m_Y1 = 0.0f;
	m_Y = 0.0f;
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CSerialCommDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CSerialCommDlg)
	DDX_Control(pDX, IDC_MSCOMM1, m_ctrlComm);
	DDX_Text(pDX, IDC_RECEIVE, m_Y1);
	DDX_Text(pDX, IDC_SEND, m_Y);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CSerialCommDlg, CDialog)
	//{{AFX_MSG_MAP(CSerialCommDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_START, OnStart)
	ON_BN_CLICKED(IDC_OPEN_COM, OnOpenCom)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CSerialCommDlg message handlers

BOOL CSerialCommDlg::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

//	Init5017H(1);
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CSerialCommDlg::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 CSerialCommDlg::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 CSerialCommDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

BEGIN_EVENTSINK_MAP(CSerialCommDlg, CDialog)
    //{{AFX_EVENTSINK_MAP(CSerialCommDlg)
	ON_EVENT(CSerialCommDlg, IDC_MSCOMM1, 1 /* OnComm */, OnComm, VTS_NONE)
	//}}AFX_EVENTSINK_MAP
END_EVENTSINK_MAP()

void CSerialCommDlg::OnComm() 
{
	// TODO: Add your control notification handler code here

	VARIANT variant_inp;
    COleSafeArray safearray_inp;
    LONG len,k;
    BYTE rxdata[2048];                    //设置BYTE数组 An 8-bit integerthat is not signed.
    CString strtemp;
   
	if(m_ctrlComm.GetCommEvent()==2)      //事件值为2表示接收缓冲区内有字符
    {                                     //以下你可以根据自己的通信协议加入处理代码
      variant_inp=m_ctrlComm.GetInput();   //读缓冲区
      safearray_inp=variant_inp;           //VARIANT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_strRXData+=strtemp;         //加入接收编辑框对应字符串 
        }
    }
    m_Y1=atof(m_strRXData);
    
	UpdateData(FALSE);                    //更新编辑框内容
    
	m_strRXData="";


	//****和智能模块连在一起的代码****//
/*
    UpdateData();                                  	//读如所需的参数
    CString m_Command;
	CString m_temp;

//	Init5017H(1);

	//	m_Y=PLANT(m_R,a1,a2,a0,a3,flag);            //二阶对象的响应
//	DRAW(0);                                        //绘制原始输出的曲线
	m_Command="#020";                               //发写数据命令
	CString string;
	string.Format(_T("%.3f"),m_Y);                       //float型转换为Cstring
	m_strTXData=m_Command+string+'\r';
    m_ctrlComm.SetOutput(COleVariant(m_strTXData));     //发送数据

	Sleep(40);                                         //延迟
    m_ctrlComm.GetInput().bstrVal;                       //清空缓冲区
	Sleep(40);

	m_Command="#015\r";                              //发读数据命令
	m_strTXData=m_Command;
	m_ctrlComm.SetOutput(COleVariant(m_strTXData));    //发送数据

	Sleep(40);
	m_strRXData=m_ctrlComm.GetInput().bstrVal;         //读缓冲区
	m_temp=m_strRXData.Mid(2);                      //根据格式取数据
	m_Y1=atof(m_temp);                              //Cstring格式转换为float
//	DRAW1(0);                                      //绘出采样回来的曲线

	UpdateData(false);                                //输出到编辑框
*/
}

void CSerialCommDlg::OnStart() 
{
	// TODO: Add your control notification handler code here

	UpdateData(TRUE);                              //读取编辑框内容
    m_strTXData.Format(_T("%.3f"),m_Y);
    m_ctrlComm.SetOutput(COleVariant(m_strTXData));//发送数据

}

void CSerialCommDlg::OnOpenCom() 
{
	// TODO: Add your control notification handler code 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_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.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

}