PC串口通信源码

// commDlg.cpp : implementation file
//

#include "stdafx.h"
#include "comm.h"
#include "commDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CCommDlg dialog

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

void CCommDlg::DoDataExchange(CDataExchange* pDX)
{
    CDialog::DoDataExchange(pDX);
    //{{AFX_DATA_MAP(CCommDlg)
    DDX_Control(pDX, IDC_STOPRECV, m_stop);
    DDX_Control(pDX, IDC_HEXSEND, m_hexsend);
    DDX_Control(pDX, IDC_COMSEEPED, m_speed);
    DDX_Control(pDX, IDC_HEX, m_hex);
    DDX_Control(pDX, IDC_COMSELECT, m_com);
    DDX_Control(pDX, IDC_MSCOMM1, m_Comm);
    DDX_Text(pDX, IDC_EDIT1, m_SendData);
    DDX_Text(pDX, IDC_EDIT2, m_ReceiveData);
    //}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CCommDlg, CDialog)
//{{AFX_MSG_MAP(CCommDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
ON_BN_CLICKED(IDC_BUTTON2, OnButton2)
ON_CBN_SELENDOK(IDC_COMSELECT, OnComselect)
ON_CBN_SELENDOK(IDC_COMSEEPED, OnComspeed)
ON_BN_CLICKED(IDC_STOPRECV, OnStoprecv)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCommDlg message handlers

BOOL CCommDlg::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_com.SetCurSel(0);
    m_speed.SetCurSel(2);
    return TRUE;  // return TRUE  unless you set the focus to a control
}

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

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

//------------------------------------------------------------------------------------------
void CCommDlg::OnComm()
{
    //-------------------------
    //   判断是否停止接收
    //-------------------------
    if(stop)
    {
        return;
    }

    //-------------------------
    //       变量定义
    //-------------------------
//  VARIANT m_input1;
    COleSafeArray m_input2;
    long length,i;
    BYTE data[1024];                             //一般设置为BYTE类型
    CString str;

    if(m_Comm.GetCommEvent()==2)                 //接收缓冲区内有字符
    {
//      m_input1=m_Comm.GetInput();              //读取缓冲区内的数据
//      m_input2=m_input1;                       //将VARIANT型变量转换为ColeSafeArray型变量

        m_input2.Attach(m_Comm.GetInput());      //确保使用时内存不会一直增大，自己修改
        length=m_input2.GetOneDimSize();         //确定数据长度

        for(i=0;i<length;i++)
            m_input2.GetElement(&i,data+i);      //将数据转换为BYTE型数组

        for(i=0;i<length;i++)                    //将数组转换为Cstring型变量
        {
            BYTE a=* (char *)(data+i);

            if(m_hex.GetCheck())
            {
                str.Format("%02X ",a);           //将字符转换成16进制来存储
            }
            else
            {
                str.Format("%c",a);
            }

            m_ReceiveData+=str;
        }
    }

    UpdateData(FALSE);                           //更新编辑框内容
}

//-------------------------------------------------------------------------------------------

char HexChar(char c)           //检测一个字符是不是十六进制字符，若是返回相应的值，否则返回0x10；
{
    if((c>='0')&&(c<='9'))
    {
        return c-0x30;
    }

    else if((c>='A')&&(c<='F'))
    {
        return c-'A'+10;
    }

    else if((c>='a')&&(c<='f'))
    {
        return c-'a'+10;
    }

    else return 0x10;
}

//------------------------------------------------------------------------------

int Str2Hex(CString str,CByteArray &data)
{
    //-----------------------------------------------------------------------
    //   将一个字符串作为十六进制串转化为一个字节数组，字节间可用空格分隔，
    //   返回转换后的字节数组长度，同时字节数组长度自动设置。
    //-----------------------------------------------------------------------

    int t,t1;                         //每个字节存储两位,比如 "AB" ,转换为16进制以后就成了 0xAB
    int rlen=0,len=str.GetLength();

    data.SetSize(len/2);

    for(int i=0;i<len;)
    {
        char l,h=str[i];
        if(h==' ')
        {
            i++;
            continue;
        }

        i++;
        if(i>=len)
            break;

        l=str[i];

        t=HexChar(h);
        t1=HexChar(l);

        if((t==16)||(t1==16))
            break;
        else
        {
            t=t*16+t1;
        }

        i++;
        data[rlen]=(char)t;
        rlen++;
    }

    data.SetSize(rlen);

    return rlen;
}

//--------------------------------------------------------------------------------------
void CCommDlg::OnButton1()
{
    //-----------------------------
    //     检查串口是否已打开
    //-----------------------------
    if( !m_Comm.GetPortOpen())
        m_Comm.SetPortOpen(TRUE);                   //打开串口

    UpdateData(TRUE);

    m_SendData += "\r\n";
    if(m_hexsend.GetCheck())
    {
        CByteArray data;

        int len=Str2Hex(m_SendData,data);
        m_Comm.SetOutput(COleVariant(data));        //发送数据
    }
    else
        m_Comm.SetOutput(COleVariant(m_SendData));  //发送数据

}

//--------------------------------------------------------------------------------------
void CCommDlg::OnButton2()
{
    m_ReceiveData.Empty();//清除接收对话框中的数据

    //m_SendData.Empty();//清除发送对话框中的数据

    UpdateData(FALSE);    //这里的实现不是很好,容易将以前的数据还原在发送框

//  COleSafeArray  SAFEARRAY;

}

//--------------------------------------------------------------------------------------
void CCommDlg::OnComselect()
{
    if(m_Comm.GetPortOpen())
        m_Comm.SetPortOpen(FALSE);

    m_Comm.SetCommPort(m_com.GetCurSel()+1);

}

//--------------------------------------------------------------------------------------
void CCommDlg::OnComspeed()
{
    CString temp;

    int i=m_speed.GetCurSel();

    switch(i)
    {
    case 0:
        i=2400;
        break;
    case 1:
        i=4800;
        break;
    case 2:
        i=9600;
        break;
    case 3:
        i=19200;
        break;
    case 4:
        i=38400;
        break;
    case 5:
        i=115200;
        break;
    }

    temp.Format("%d,n,8,1",i);
    m_Comm.SetSettings(temp);
}

//---------------------------------------------------------------------------------------
void CCommDlg::OnStoprecv()
{
    stop=!stop;
    if(stop)
        m_stop.SetWindowText("继续接收");
    else
        m_stop.SetWindowText("停止接收");
}

//---------------------------------------------------------------------------------------
BOOL CCommDlg::PreTranslateMessage(MSG* pMsg)
{
    // TODO: Add your specialized code here and/or call the base class

    if(pMsg->message==WM_KEYDOWN && pMsg->wParam==VK_RETURN)
    {
        return TRUE;
    }

    return CDialog::PreTranslateMessage(pMsg);
}