rs232dlg.cpp

使用Visual C++ 6.0开发的R232串口通信程序

// RS232Dlg.cpp : implementation file
//

#include "stdafx.h"
#include "RS232.h"
#include "RS232Dlg.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()

/////////////////////////////////////////////////////////////////////////////
// CRS232Dlg dialog

CRS232Dlg::CRS232Dlg(CWnd* pParent /*=NULL*/)
: CDialog(CRS232Dlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CRS232Dlg)
	m_RXD = _T("");
	m_TXD = _T("");
	m_strBits = _T("");
	m_strDataBit = _T("");
	m_strParity = _T("");
	m_strStopBit = _T("");
	m_strStatus = _T("");
	m_nCom = -1;
	m_strPath = _T("");
	m_time = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	//变量初始化
	m_nCom = 0;						//默认为com1
	m_strBits = "9600";
	m_strDataBit = "8";
	m_strParity = "n";
	m_strStopBit = "1";
	m_strSeting = "9600, n, 8, 1";	//默认设置
	m_strStatus = "Status: COM1 Open: TURE, 9600,n,8,1"; 
	m_bPortOpen = 0;				//默认端口没有打开
	m_time = "1000";				//默认发送时间间隔为1000ms
	m_bAutoSend = 0;				//默认为不自动发送
}

void CRS232Dlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CRS232Dlg)
	DDX_Control(pDX, IDC_STATIC_ICON, m_ctrlIcon);
	DDX_Control(pDX, IDC_CHECK_HEXSEND, m_ctrlHexSend);
	DDX_Control(pDX, IDC_CHECK_HEX, m_ctrlHexdisp);
	DDX_Text(pDX, IDC_EDIT_RXD, m_RXD);
	DDX_Text(pDX, IDC_EDIT_TXD, m_TXD);
	DDX_Control(pDX, IDC_MSCOMM1, m_Comm);
	DDX_CBString(pDX, IDC_COMBO_BITS, m_strBits);
	DDX_CBString(pDX, IDC_COMBO_DATA, m_strDataBit);
	DDX_CBString(pDX, IDC_COMBO_PARITY, m_strParity);
	DDX_CBString(pDX, IDC_COMBO_STOP, m_strStopBit);
	DDX_Text(pDX, IDC_EDIT_STATUS, m_strStatus);
	DDX_CBIndex(pDX, IDC_COMBO_COM, m_nCom);
	DDX_Text(pDX, IDC_EDIT_PATH, m_strPath);
	DDX_Text(pDX, IDC_EDIT_TIME, m_time);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CRS232Dlg, CDialog)
//{{AFX_MSG_MAP(CRS232Dlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_BUTTON_SEND, OnButtonSend)
ON_BN_CLICKED(IDC_BUTTON_CLOSE, OnButtonClose)
	ON_BN_CLICKED(IDC_BUTTON_CLEAR, OnButtonClear)
	ON_BN_CLICKED(IDC_BUTTON_CLEARS, OnButtonClears)
	ON_CBN_SELCHANGE(IDC_COMBO_COM, OnSelchangeComboCom)
	ON_CBN_SELCHANGE(IDC_COMBO_BITS, OnSelchangeComboBits)
	ON_CBN_SELCHANGE(IDC_COMBO_PARITY, OnSelchangeComboParity)
	ON_CBN_SELCHANGE(IDC_COMBO_DATA, OnSelchangeComboData)
	ON_CBN_SELCHANGE(IDC_COMBO_STOP, OnSelchangeComboStop)
	ON_WM_TIMER()
	ON_BN_CLICKED(IDC_BUTTON_AUTOSEND, OnButtonAutosend)
	ON_BN_CLICKED(IDC_BUTTON_FILE, OnButtonFile)
	ON_BN_CLICKED(IDC_BUTTON_SENDFILE, OnButtonSendfile)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CRS232Dlg message handlers

BOOL CRS232Dlg::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
	((CComboBox*)GetDlgItem(IDC_COMBO_COM))->SetCurSel(m_nCom);		//设置默认打开串口
	UpdateData(FALSE);
	this->OpenCOM();				//打开串口
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CRS232Dlg::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 CRS232Dlg::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 CRS232Dlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CRS232Dlg::OnButtonSend() 
{	//发送字符
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);
	SendString(m_TXD);	//调用发送字符子函数

}

BEGIN_EVENTSINK_MAP(CRS232Dlg, CDialog)
//{{AFX_EVENTSINK_MAP(CRS232Dlg)
ON_EVENT(CRS232Dlg, IDC_MSCOMM1, 1 /* OnComm */, OnComm, VTS_NONE)
//}}AFX_EVENTSINK_MAP
END_EVENTSINK_MAP()

void CRS232Dlg::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_Comm.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_Comm.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
			if (m_ctrlHexdisp.GetCheck())
				strtemp.Format("%02X ", bt);	//以十六进制显示
			else
				strtemp.Format("%c",bt); //将字符送入临时变量strtemp存放
            m_RXD += strtemp; //加入接收编辑框对应字符串 
        }
    }
    UpdateData(FALSE); //更新编辑框内容
}
void CRS232Dlg::OnButtonClose() 
{
	// TODO: Add your control notification handler code here
	if (m_Comm.GetPortOpen())
	{
		m_Comm.SetPortOpen(FALSE);
		m_bPortOpen = 0;
		this->SetDlgItemText(IDC_BUTTON_CLOSE, "打开串口");
	}
	else
	{
		m_Comm.SetPortOpen(TRUE);
		m_bPortOpen = 1;
		this->SetDlgItemText(IDC_BUTTON_CLOSE, "关闭串口");
	}
	ShowStatus();
}

void CRS232Dlg::OpenCOM()
{	//打开串口

	m_Comm.SetCommPort(m_nCom+1);		//设置打开com口
	
	m_bPortOpen = 1;					//置打开状态为1
	m_Comm.SetSettings(m_strSeting);	//设置端口
	m_Comm.SetInputMode(1);					//以二进制方式捡取
	m_Comm.SetRThreshold(1);				//当缓冲区中有一个以上字符时触发事件
	m_Comm.SetDTREnable(TRUE);
	m_Comm.SetRTSEnable(TRUE);
	if (!m_Comm.GetPortOpen())			//如果端口没有打开
		m_Comm.SetPortOpen(TRUE);		//则打开选定端口
	m_Comm.SetInputLen(0);					//读取控件中缓冲区中全部内容
	m_Comm.GetInput();						//预读缓冲区，清除残留数据
	ShowStatus();
	
}

void CRS232Dlg::OnButtonClear() 
{
	// TODO: Add your control notification handler code here
	m_RXD = "";
	SetDlgItemText(IDC_EDIT_RXD,"");
}

void CRS232Dlg::OnButtonClears() 
{
	// TODO: Add your control notification handler code here
	m_TXD = "";
	
	SetDlgItemText(IDC_EDIT_TXD,"");
}



void CRS232Dlg::OnSelchangeComboCom() 
{
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);
	if (m_Comm.GetPortOpen())
		m_Comm.SetPortOpen(FALSE);	//如果当前端口打开了则关上
	OpenCOM();						//然后打开新的选择的端口
}



void CRS232Dlg::OnSelchangeComboBits() 
{
	// TODO: Add your control notification handler code here
	this->ChangSetting();

}




void CRS232Dlg::OnSelchangeComboParity() 
{
	// TODO: Add your control notification handler code here
	this->ChangSetting();
}

CString CRS232Dlg::parity(CString str)
{	//把奇偶校验位转换为规范的表示
	if (str == "None无")
		return "n";
	else if (str == "ODD奇")
		return "o";
	else if (str == "EVEN偶")
		return "e";
}

void CRS232Dlg::ShowStatus()
{//状态栏显示状态
	CString com[4] = {"COM1", "COM2", "COM3", "COM4"};
	CString portopen[2] = {"Closed", "Opend"};
	m_strStatus = "Status: " + com[m_nCom] +":  " + portopen[m_bPortOpen] + ", Setting: " + m_strSeting;
	if (m_bPortOpen == FALSE)
		m_ctrlIcon.SetIcon((HICON)LoadImage(AfxGetApp()->m_hInstance,
		MAKEINTRESOURCE(IDI_ICON_CLOSE),
		IMAGE_ICON,
		GetSystemMetrics(SM_CXICON),
		GetSystemMetrics(SM_CXICON),
		0));	//显示关闭icon
	else
		m_ctrlIcon.SetIcon((HICON)LoadImage(AfxGetApp()->m_hInstance,
		MAKEINTRESOURCE(IDI_ICON_OPEN),
		IMAGE_ICON,
		GetSystemMetrics(SM_CXICON),
		GetSystemMetrics(SM_CXICON),
		0));	//显示打开icon
	UpdateData(FALSE);
}

void CRS232Dlg::ChangSetting()
{
	UpdateData(TRUE);		//如果设置改变了则更新数据

	m_strSeting = m_strBits+","+parity(m_strParity) +
				"," + m_strDataBit + "," + m_strStopBit;	//重新设置打开设置
	if (m_Comm.GetPortOpen())
		m_Comm.SetPortOpen(FALSE);	//如果当前端口打开了则关上
	OpenCOM();						//重新打开
}

void CRS232Dlg::OnSelchangeComboData() 
{
	// TODO: Add your control notification handler code here
		this->ChangSetting();
}

void CRS232Dlg::OnSelchangeComboStop() 
{
	// TODO: Add your control notification handler code here
		this->ChangSetting();
}

int CRS232Dlg::String2Hex(CString str, CByteArray &senddata)
{	//将字符串转换为16进制，俩个字符间插入了一个空格
	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 == ' ')	//如果遇到空格则跳过
		{
			i++;
			continue;
		}
		i++;
		if (i >= len)
			break;

		lstr = str[i];
		if ((hexdata = ConvertHexChar(hstr)) == -1)
		{
			AfxMessageBox("输入字符超出16进制范围，无法按16进制正常发送",MB_ICONERROR);		//将高字符转换为16进制字符
			return -1;
		}
		if ((lowhexdata = ConvertHexChar(lstr)) == -1)	//再将低字符转换为16进制字符
		{
			AfxMessageBox("输入字符超出16进制范围，无法按16进制正常发送",MB_ICONERROR);		//将高字符转换为16进制字符
			return -1;
		}

		if ((hexdata ==16) || (lowhexdata == 16))
			break;							//如果这俩个字符中任意一个大于16则跳出
		else
			hexdata = hexdata*16 + lowhexdata;	//否则把俩个字符叠加
		i++;
		senddata[hexdatalen] = (char)hexdata;	//保存到要发送的缓冲区中
		hexdatalen++;
	}

	senddata.SetSize(hexdatalen);
	return hexdatalen;
}

char CRS232Dlg::ConvertHexChar(char ch)
{	//将一个字符转换为相应的十六进制
	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 CRS232Dlg::OnTimer(UINT nIDEvent) 
{
	// TODO: Add your message handler code here and/or call default
	OnButtonSend();
	CDialog::OnTimer(nIDEvent);
}



void CRS232Dlg::OnButtonAutosend() 
{
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);
	m_bAutoSend = !m_bAutoSend;
	if (m_bAutoSend)
	{
		SetTimer(1, atoi(m_time.GetBuffer(m_time.GetLength())), NULL);	//设置定时
		SetDlgItemText(IDC_BUTTON_AUTOSEND, "停止");
	}
	else
	{
		KillTimer(1);
		SetDlgItemText(IDC_BUTTON_AUTOSEND, "自动发送");
	}
}

void CRS232Dlg::OnButtonFile() 
{
	// TODO: Add your control notification handler code here

		CFile file;
		CFileDialog FileDlg(TRUE, NULL, NULL, OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,
							"文本文件(*.txt)|*.txt||");
		if (FileDlg.DoModal() == IDOK)			//打开文件对话框
			m_strPath = FileDlg.GetPathName();	//得到文件路经
		UpdateData(FALSE);

		file.Open(m_strPath, CFile::modeRead | CFile::typeBinary);	//打开这个文件
		file.Read(m_strFile.GetBuffer(file.GetLength()), file.GetLength()); //读文件

		file.Close();
}

void CRS232Dlg::OnButtonSendfile() 
{
	// TODO: Add your control notification handler code here
	SendString(m_strFile);
}

void CRS232Dlg::SendString(CString str)
{
	if (m_ctrlHexSend.GetCheck())
	{
		CByteArray hexdata;
		int len = String2Hex(str, hexdata);		//len为发送多少个十六进制字符
		if (len == -1)
			return;
		m_Comm.SetOutput(COleVariant(hexdata));		//发送十六进制数据
	}
	else
		m_Comm.SetOutput(COleVariant(str));
}