testcom2dlg.cpp

MSComm32.ocx串口通信程序。测试时不要用虚拟串口

// TestCom2Dlg.cpp : implementation file
//

#include "stdafx.h"
#include "TestCom2.h"
#include "TestCom2Dlg.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()

/////////////////////////////////////////////////////////////////////////////
// CTestCom2Dlg dialog

CTestCom2Dlg::CTestCom2Dlg(CWnd* pParent /*=NULL*/)
	: CDialog(CTestCom2Dlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CTestCom2Dlg)
	m_Com = 0;
	m_TxData = _T("");
	m_RxData = _T("");
	m_rate = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CTestCom2Dlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CTestCom2Dlg)
	DDX_Control(pDX, IDC_CHECK_HEXDISPLAY, m_ctrlHexDisplay);
	DDX_Control(pDX, IDC_CHECK_HEXSEND, m_ctrlHexSend);
	DDX_Text(pDX, IDC_txtCom, m_Com);
	DDX_Control(pDX, IDC_MSCOMM1, m_ctrlComm);
	DDX_Text(pDX, IDC_txtTxData, m_TxData);
	DDX_Text(pDX, IDC_txtRxData, m_RxData);
	DDX_Text(pDX, IDC_txtRate, m_rate);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CTestCom2Dlg, CDialog)
	//{{AFX_MSG_MAP(CTestCom2Dlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_btnOpen, OnbtnOpen)
	ON_BN_CLICKED(IDC_btnClose, OnbtnClose)
	ON_BN_CLICKED(IDC_btnSend, OnbtnSend)
	ON_BN_CLICKED(IDC_btnClear, OnbtnClear)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CTestCom2Dlg message handlers

BOOL CTestCom2Dlg::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_TxData = "24 00 26 84 0B 00 00 D5 FD B3 A3 00 00 00 00 00 00 D2 BB B0 E3 00 00 00 00 00 00 D1 CF D6 D8 00 00 00 00 00 00 9F";
	m_TxData = "24 00 10 84 0D 00 00 79 63 78 C3 DC C2 EB 31 D8";
	m_Com = 3;
	m_rate = "57600,n,8,1";
	m_ctrlHexDisplay.SetCheck(1);
	m_ctrlHexSend.SetCheck(1);
	UpdateData(FALSE);
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CTestCom2Dlg::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 CTestCom2Dlg::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 CTestCom2Dlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

BEGIN_EVENTSINK_MAP(CTestCom2Dlg, CDialog)
    //{{AFX_EVENTSINK_MAP(CTestCom2Dlg)
	ON_EVENT(CTestCom2Dlg, IDC_MSCOMM1, 1 /* OnComm */, OnComm, VTS_NONE)
	//}}AFX_EVENTSINK_MAP
END_EVENTSINK_MAP()

void CTestCom2Dlg::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
		UpdateData(FALSE);
        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
			if(m_ctrlHexDisplay.GetCheck())
				strtemp.Format("%02X ",bt); //将字符以十六进制方式送入临时变量strtemp存放，注意这里加入一个空隔
			else 
				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 
        }
    }
    UpdateData(FALSE); //更新编辑框内容
}

void CTestCom2Dlg::OnbtnOpen() 
{
	// TODO: Add your control notification handler code here
		if(m_ctrlComm.GetPortOpen())
m_ctrlComm.SetPortOpen(FALSE);

UpdateData(TRUE);

m_ctrlComm.SetCommPort(m_Com); //选择com1
if( !m_ctrlComm.GetPortOpen())
m_ctrlComm.SetPortOpen(TRUE);//打开串口
else
AfxMessageBox("cannot open serial port");

m_ctrlComm.SetSettings(m_rate); //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 CTestCom2Dlg::OnbtnClose() 
{
	// TODO: Add your control notification handler code here
	m_ctrlComm.SetPortOpen(FALSE);//打开串口
}

void CTestCom2Dlg::OnbtnSend()
{
	// TODO: Add your control notification handler code here
	UpdateData(TRUE); //读取编辑框内容
	CString sendData[17],firstData;
	firstData = m_TxData; //SubItem( m_TxData,sendData,"Send:");

	if(m_ctrlHexSend.GetCheck())
	{
		CByteArray hexdata;
		int len=String2Hex(firstData,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(firstData));//发送ASCII字符数据
}

int CTestCom2Dlg::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;
}

char CTestCom2Dlg::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 CTestCom2Dlg::OnbtnClear() 
{
	// TODO: Add your control notification handler code here
	m_RxData = "";
	m_TxData = "";
	UpdateData(FALSE);
}

CString CTestCom2Dlg::SubItem(CString src, CString s[], CString split)
{
	int length, pos,splitLen;
	CStringArray pStrAry;
	
	splitLen = split.GetLength();

	pos=src.Find(split);
	length = src.Find(split,pos+1);
		
	s[0] = src.Left(length);
	s[0] = s[0].Right(s[0].GetLength() - splitLen);

	return s[0];
}