Visual C++串口通信技术详解 调试精灵

// CommWizardDlg.cpp : implementation file
//


#include "stdafx.h"
#include "CommWizard.h"
#include "CommWizardDlg.h"
#include "SettingDlg.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()


/////////////////////////////////////////////////////////////////////////////
// CCommWizardDlg dialog


CCommWizardDlg::CCommWizardDlg(CWnd* pParent /*=NULL*/)
: CDialog(CCommWizardDlg::IDD, pParent)
{
bSend = FALSE;
bReceive = FALSE;


m_nPort = 1;
m_strSettings = _T("9600,n,8,1");
m_strSendString = _T("");
m_nTime = 1000;


m_nInputMode = 1;


//{{AFX_DATA_INIT(CCommWizardDlg)
m_strReceive = _T("");
//}}AFX_DATA_INIT
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}


void CCommWizardDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CCommWizardDlg)
DDX_Control(pDX, IDC_RECEIVE, m_ctrlReceive);
DDX_Control(pDX, IDC_SEND, m_ctrlSend);
DDX_Control(pDX, IDC_TYPE, m_ctrlDataType);
DDX_Text(pDX, IDC_EDIT_RECEIVE, m_strReceive);
DDX_Control(pDX, IDC_COMMCTRL, m_Com);
//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CCommWizardDlg, CDialog)
//{{AFX_MSG_MAP(CCommWizardDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_RECEIVE, OnReceive)
ON_BN_CLICKED(IDC_SEND, OnSend)
ON_BN_CLICKED(IDC_SETTINGS, OnSettings)
ON_CBN_SELCHANGE(IDC_TYPE, OnSelchangeType)
ON_BN_CLICKED(IDC_CLEAR, OnClear)
ON_BN_CLICKED(IDC_MANUALSEND, OnManualsend)
ON_WM_TIMER()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()


/////////////////////////////////////////////////////////////////////////////
// CCommWizardDlg message handlers


BOOL CCommWizardDlg::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_ctrlDataType.AddString(_T("按ASCII码"));
m_ctrlDataType.AddString(_T("按2进制"));
m_ctrlDataType.AddString(_T("按16进制"));
m_ctrlDataType.SetCurSel(m_nInputMode);


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


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


void CCommWizardDlg::OnReceive() 
{
// TODO: Add your control notification handler code here
m_Com.GetInput();//先预读缓冲区以清除残留数据
bReceive = !bReceive;
if(bReceive)
m_ctrlReceive.SetWindowText(_T("停止接收"));
else
m_ctrlReceive.SetWindowText(_T("开始接收"));
}


void CCommWizardDlg::OnSend() 
{
// TODO: Add your control notification handler code here
bSend = !bSend;
if(bSend)
{
m_ctrlSend.SetWindowText(_T("停止发送"));
SetTimer(1,m_nTime,NULL);//时间为1000毫秒
}
else
{
m_ctrlSend.SetWindowText(_T("自动发送"));
KillTimer(1);  //取消定时
}
}


void CCommWizardDlg::OnSettings() 
{
// TODO: Add your control notification handler code here
CSettingDlg setDlg;
setDlg.nPort = m_nPort;
setDlg.nTime = m_nTime;
setDlg.strSettings = m_strSettings;
setDlg.strSendString = m_strSendString;


if(setDlg.DoModal() == IDOK)
{
m_nPort = setDlg.nPort;
m_nTime = setDlg.nTime;
m_strSettings = setDlg.strSettings;
m_strSendString = setDlg.strSendString;
}
OpenPort();
}


void CCommWizardDlg::OnSelchangeType() 
{
// TODO: Add your control notification handler code here
m_nInputMode = m_ctrlDataType.GetCurSel();
}


void CCommWizardDlg::OnClear() 
{
// TODO: Add your control notification handler code here
m_strReceive = _T("");
}


BEGIN_EVENTSINK_MAP(CCommWizardDlg, CDialog)
    //{{AFX_EVENTSINK_MAP(CCommWizardDlg)
ON_EVENT(CCommWizardDlg, IDC_COMMCTRL, 1 /* OnComm */, OnOnCommCommctrl, VTS_NONE)
//}}AFX_EVENTSINK_MAP
END_EVENTSINK_MAP()


void CCommWizardDlg::OnOnCommCommctrl() 
{
// 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(bReceive)
{
if(m_Com.GetCommEvent()==2)     //事件值为2表示接收缓冲区内有字符
{
variant_inp = m_Com.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_nInputMode == 2)
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_strReceive = m_strReceive + strtemp;    //加入接收编辑框对应字符串    
}
m_strReceive += "\r\n";
}
}
UpdateData(FALSE);           //更新编辑框内容
}


void CCommWizardDlg::OpenPort()
{
if(m_Com.GetPortOpen())
m_Com.SetPortOpen(FALSE);


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


m_Com.SetSettings(m_strSettings); //波特率9600，无校验，8个数据位，1个停止位
m_Com.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_Com.SetInputMode(1);
m_Com.SetInputLen(0);  //设置当前接收区数据长度为0
m_Com.GetInput();//先预读缓冲区以清除残留数据
}


void CCommWizardDlg::OnManualsend() 
{
// TODO: Add your control notification handler code here
CString strSend;


if(m_nInputMode > 1)
{
CByteArray hexdata;
int len=String2Hex(m_strSendString ,hexdata);
m_Com.SetOutput(COleVariant(hexdata));
}
else
m_Com.SetOutput(COleVariant(m_strSendString));//发送数据
}


void CCommWizardDlg::OnTimer(UINT nIDEvent) 
{
// TODO: Add your message handler code here and/or call default
OnManualsend();
CDialog::OnTimer(nIDEvent);
}




int CCommWizardDlg::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;
}


//这是一个将字符转换为相应的十六进制值的函数
//功能：若是在0-F之间的字符，则转换为相应的十六进制字符，否则返回-1
char CCommWizardDlg::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);
}
//////////////////////////////////////////////////////
//////////////////////////////////////////////////////
//////////////////////////////////////////////////////






// SettingDlg.cpp : implementation file
//


#include "stdafx.h"
#include "CommWizard.h"
#include "SettingDlg.h"


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


/////////////////////////////////////////////////////////////////////////////
// CSettingDlg dialog




CSettingDlg::CSettingDlg(CWnd* pParent /*=NULL*/)
: CDialog(CSettingDlg::IDD, pParent)
{
nPort = 1;
strSettings = _T("9600,n,8,1");
strSendString = _T("");
nTime = 1000;
//{{AFX_DATA_INIT(CSettingDlg)
m_nPort = 1;
m_strSettings = _T("9600,n,8,1");
m_strSendString = _T("");
m_nTime = 1000;
//}}AFX_DATA_INIT
}




void CSettingDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CSettingDlg)
DDX_Text(pDX, IDC_COM, m_nPort);
DDX_Text(pDX, IDC_COMSETTING, m_strSettings);
DDX_Text(pDX, IDC_SENDSTRING, m_strSendString);
DDX_Text(pDX, IDC_TIME, m_nTime);
//}}AFX_DATA_MAP
}




BEGIN_MESSAGE_MAP(CSettingDlg, CDialog)
//{{AFX_MSG_MAP(CSettingDlg)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()


/////////////////////////////////////////////////////////////////////////////
// CSettingDlg message handlers


BOOL CSettingDlg::OnInitDialog() 
{
CDialog::OnInitDialog();
// TODO: Add extra initialization here
m_nPort = nPort;
m_nTime = nTime;
m_strSettings = strSettings;
m_strSendString = strSendString;
UpdateData(FALSE);
return TRUE;  // return TRUE unless you set the focus to a control
             // EXCEPTION: OCX Property Pages should return FALSE
}


void CSettingDlg::OnOK() 
{
// TODO: Add extra validation here
UpdateData(TRUE);


nPort = m_nPort;
nTime = m_nTime;
strSettings = m_strSettings;
strSendString = m_strSendString;


UpdateData(FALSE);
CDialog::OnOK();
}