myserialportdlg.cpp

串口收发程序

// mySerialPortDlg.cpp : implementation file
//

#include "stdafx.h"
#include "mySerialPort.h"
#include "mySerialPortDlg.h"
#include "io.h"
#include "math.h"
#include <fstream>
#include <iostream>


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

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

//CString FileContent;//全局变量，暂存发送文件的内容
LONG ContentLength;//全局变量，暂存接收数据的长度

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()

/////////////////////////////////////////////////////////////////////////////
// CMySerialPortDlg dialog

CMySerialPortDlg::CMySerialPortDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CMySerialPortDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CMySerialPortDlg)
	m_strRXData = _T("");
	m_strTXData = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CMySerialPortDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CMySerialPortDlg)
	DDX_Control(pDX, IDC_MSCOMM1, m_ctrlComm);
	DDX_Text(pDX, IDC_EDIT_RXDATA, m_strRXData);
	DDX_Text(pDX, IDC_EDIT_TXDATA, m_strTXData);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMySerialPortDlg, CDialog)
	//{{AFX_MSG_MAP(CMySerialPortDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON_OpenPort, OnBUTTONOpenPort)
	ON_BN_CLICKED(IDC_BUTTON_MANUALSEND, OnButtonManualsend)
	ON_BN_CLICKED(IDC_ReadFileBtn, OnReadFileBtn)
	ON_BN_CLICKED(IDC_SaveFileBtn, OnSaveFileBtn)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMySerialPortDlg message handlers

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

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

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

void CMySerialPortDlg::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
		ContentLength = len;
        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 
        }
    }
    UpdateData(FALSE); //更新编辑框内容
}

void CMySerialPortDlg::OnBUTTONOpenPort() 
{
	// 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
	
}

void CMySerialPortDlg::OnButtonManualsend() 
{
	// TODO: Add your control notification handler code here
	UpdateData(TRUE); //读取编辑框内容
	m_ctrlComm.SetOutput(COleVariant(m_strTXData));//发送数据	
}

//读入待发送的文件内容
void CMySerialPortDlg::OnReadFileBtn() 
{
	// TODO: Add your control notification handler code here
	LPCSTR	lpszPath = "e:\\Huffman";
	SetCurrentDirectory( lpszPath );
	static char BASED_CODE szFilter[] = "文本文件(*.txt)|*.txt|所有文件(*.*)|*.*||";

	CFileDialog FileDlg( TRUE,  NULL,  NULL,OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,
		 szFilter );
	FileDlg.m_ofn.lpstrInitialDir = lpszPath ;

	if( FileDlg.DoModal() ==IDOK )
	{

		CString strFileName = FileDlg.GetFileName( );
		CString strFileExt = FileDlg.GetFileExt( );
		CString lpstrName =  FileDlg.GetPathName( );
		m_strTXData=lpstrName;

		CFile f;
		CString str;
//		CString buff;
		bool b = f.Open(lpstrName, CFile::modeRead);
		
		int length = f.GetLength();
		ContentLength = length;//全局变量赋值，文件长度

		TCHAR* pBuff = new TCHAR[length+1];

//		pBuff = buff.GetBuffer(length+1);
//		str = f.Read(pBuff,length);
		f.Read(pBuff,length);
//		buff = str;		
//		m_strTXData = pBuff;
//		UpdateData(FALSE);
		pBuff[length] = '\0';//pBuff结束符标志

		m_strTXData = pBuff;//用于编辑框显示文本
//		FileContent = pBuff;//全局变量赋值，文件文本内容
		UpdateData(FALSE);
		f.Close();

//		buff.ReleaseBuffer();
		pBuff = NULL;
	}
}

//保存接收到的文本为文件
void CMySerialPortDlg::OnSaveFileBtn() 
{
	// TODO: Add your control notification handler code here
	LPCSTR	lpszPath = "e:\\Huffman";
	SetCurrentDirectory( lpszPath );
	static char BASED_CODE szFilter[] = "文本文件(*.txt)|*.txt|所有文件(*.*)|*.*||";

	CFileDialog FileDlg( FALSE,  NULL,  NULL,OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,
		 szFilter );
	FileDlg.m_ofn.lpstrInitialDir = lpszPath ;

	if( FileDlg.DoModal() ==IDOK )
	{

		CString strFileName = FileDlg.GetFileName( );
		CString strFileExt = FileDlg.GetFileExt( );
		CString lpstrName =  FileDlg.GetPathName( );
//		m_strRXData=lpstrName;

		CFile fout;
		fout.Open(lpstrName, CFile::modeCreate | CFile::modeWrite);
		fout.Write(m_strRXData, ContentLength);
	}
}