scommtestdlg.cpp

该源代码主要是实现串口通信

// SCommTestDlg.cpp : implementation file
//

#include "stdafx.h"
#include "SCommTest.h"
#include "SCommTestDlg.h"
#include "io.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()

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

CSCommTestDlg::CSCommTestDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CSCommTestDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CSCommTestDlg)
	m_strEditRXData = _T("");
	m_strEditTXData = _T("");
	m_strCurPath = _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_EDIT_SAVEPATH, m_ctrlSavePath);
	DDX_Text(pDX, IDC_EDIT_RXData, m_strEditRXData);
	DDX_Text(pDX, IDC_EDIT_TXData, m_strEditTXData);
	DDX_Control(pDX, IDC_MSCOMM1, m_ctrlComm);
	DDX_Text(pDX, IDC_EDIT_SAVEPATH, m_strCurPath);
	//}}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_MALUALSEND, OnButtonMalualsend)
	ON_BN_CLICKED(IDC_BUTTON_SAVEDATA, OnButtonSavedata)
	ON_BN_CLICKED(IDC_BUTTON_DIRBROWSER, OnButtonDirbrowser)
	ON_WM_TIMER()
	ON_BN_CLICKED(IDC_BUTTON_CLEARRTDATA, OnButtonClearrtdata)
	ON_BN_CLICKED(IDC_BUTTON_CLEANTXDATA, OnButtonCleantxdata)
	//}}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
	m_ctrlComm.SetCommPort(1);//选择COM1
	//波特率9600.无校验,8个数据位,1个停止位
	m_ctrlComm.SetInputMode(1);//输入方式为二进制方式
	m_ctrlComm.SetInBufferSize(1024);//设置输入缓冲区的大小
	m_ctrlComm.SetOutBufferSize(512);//设置输出缓冲区的大小
	//波特率9600.无校验,8个数据位,1个停止位
	m_ctrlComm.SetSettings("9600,n,8,1");//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受数据的OnComm事件
	if(!m_ctrlComm.GetPortOpen())
		m_ctrlComm.SetPortOpen(TRUE);//打开串口
	m_ctrlComm.SetRThreshold(1);
	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_MSCOMM1, 1 /* OnComm */, OnComm, VTS_NONE)
	//}}AFX_EVENTSINK_MAP
END_EVENTSINK_MAP()

void CSCommTestDlg::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
	CString strtemp;
	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
		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_strEditRXData+=strtemp;//加入接收编辑框对应字符串
		}
	}
	UpdateData(FALSE);//更新编辑框的内容
}

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

void CSCommTestDlg::OnButtonSavedata() 
{
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);
	
	int nLength;
	nLength=m_strCurPath.GetLength();
	for(int nCount=0;nCount<nLength;nCount++)
	{
		if(m_strCurPath.GetAt(nCount)=='\\')
			CreateDirectory(m_strCurPath.Left(nCount+1),NULL);
	}
	CreateDirectory(m_strCurPath,NULL);
	CFile m_rFile;
	LPCSTR lpszPath=m_strCurPath;//"c:\\comdata";
	SetCurrentDirectory(lpszPath);
//文件名为REC**.TXT，以下代码自动检测文件名是否存在，否则后面序号自动递增。
	char buf[20];
	for(int j=0;j<100;j++)
	{
		sprintf(buf,"Rec%02d.txt",j);
		if((access(buf,0))==-1)
			break;
	}
	if(!m_rFile.Open(buf,CFile::modeCreate | CFile::modeWrite))
	{
		AfxMessageBox("创建文件记录失败!");
		return;
	}
	if((access(buf,0))==-1)
	{
		AfxMessageBox("failed");
		return;
	}
//在文件开始处写上保存日期
	CTime t=CTime::GetCurrentTime();
	CString str=t.Format("%Y年%m月%d日%H时%M分%S秒\r\n");
	m_rFile.Write((LPCTSTR)str,str.GetLength());
//保存显示数据
	m_rFile.Write((LPCTSTR)m_strEditRXData,m_strEditRXData.GetLength());
	m_rFile.Flush();
	m_rFile.Close();//关闭文件
	str="OK,";
	for(int i=0;i<5;i++)
		str+=buf[i];
	str+=".txt saved";
	m_ctrlSavePath.SetWindowText(str);
	SetTimer(1,5000,NULL);
}

void CSCommTestDlg::OnButtonDirbrowser() 
{
	// TODO: Add your control notification handler code here
    static char displayname[MAX_PATH];
    static char path[MAX_PATH];
    LPITEMIDLIST pidlBrowse;
    BROWSEINFO bi;
    bi.hwndOwner=this->m_hWnd;
	bi.pidlRoot=NULL;
	bi.pszDisplayName=displayname;
	bi.lpszTitle="请选择要保存接收数据的文件夹";
	bi.ulFlags=BIF_EDITBOX;
	bi.lpfn=NULL;
	pidlBrowse=SHBrowseForFolder(&bi);
	if(pidlBrowse!=NULL)
	{
		SHGetPathFromIDList(pidlBrowse,path);
	}
	CString str=path;//得到路径
	if(str.IsEmpty())  return;//如果没选择，就返回
	m_strCurPath=str;//接收路径编辑框对应变量
	UpdateData(FALSE);
}


void CSCommTestDlg::OnTimer(UINT nIDEvent) 
{
	// TODO: Add your message handler code here and/or call default
	switch(nIDEvent)
	{
	case 1:
		m_ctrlSavePath.SetWindowText(m_strCurPath);//重新显示路径
		KillTimer(1);//关闭定时器
		break;
	default:
		break;
	}
	CDialog::OnTimer(nIDEvent);
}

void CSCommTestDlg::OnButtonClearrtdata() 
{
	// TODO: Add your control notification handler code here
	m_strEditRXData.Empty();
	UpdateData(FALSE);
}

void CSCommTestDlg::OnButtonCleantxdata() 
{
	// TODO: Add your control notification handler code here
	m_strEditTXData.Empty();
	UpdateData(FALSE);
}