portiodlg.cpp

用vc＋＋实现的并口epp模式读写程序

// PortIODlg.cpp : implementation file
//

#include "stdafx.h"
#include "PortIO.h"
#include "PortIODlg.h"
#include "dlportio.h"

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

#define BYTEIO  0
#define WORDIO  1
#define DWORDIO 2
#define HEXNUM  0
#define DECNUM  1


/////////////////////////////////////////////////////////////////////////////
// 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()

/////////////////////////////////////////////////////////////////////////////
// CPortIODlg dialog

CPortIODlg::CPortIODlg(CWnd* pParent /*=NULL*/)
  : CDialog(CPortIODlg::IDD, pParent)
{
  //{{AFX_DATA_INIT(CPortIODlg)
  m_ioSize = -1;
  m_numberFormat = -1;
  m_addr = _T("768");
  m_value = _T("0");
	//}}AFX_DATA_INIT
  // Note that LoadIcon does not require a subsequent DestroyIcon in Win32
  m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);

  m_dwAddr = 768;	//Values used in read\write functions
  m_dwValue = 0;
  m_bDec = TRUE;	//Initially form is set to Decimal
}

void CPortIODlg::DoDataExchange(CDataExchange* pDX)
{
  CDialog::DoDataExchange(pDX);

  //{{AFX_DATA_MAP(CPortIODlg)
    DDX_Radio(pDX, IDC_RADIO_BYTE, m_ioSize);
    DDX_Radio(pDX, IDC_RADIO_HEX, m_numberFormat);
	DDX_Text(pDX, IDC_EDIT_ADDR, m_addr);
	DDX_Text(pDX, IDC_EDIT_VALUE, m_value);
	//}}AFX_DATA_MAP

}

BEGIN_MESSAGE_MAP(CPortIODlg, CDialog)
  //{{AFX_MSG_MAP(CPortIODlg)
  ON_WM_SYSCOMMAND()
  ON_WM_PAINT()
  ON_WM_QUERYDRAGICON()
  ON_BN_CLICKED(IDC_BUTTON_ABOUT, OnButtonAbout)
  ON_BN_CLICKED(IDC_READ, OnRead)
  ON_BN_CLICKED(IDC_WRITE, OnWrite)
  ON_BN_CLICKED(IDC_RADIO_DEC, OnRadioDec)
  ON_BN_CLICKED(IDC_RADIO_HEX, OnRadioHex)
  //}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CPortIODlg message handlers

BOOL CPortIODlg::OnInitDialog()
{

  m_ioSize = BYTEIO;
  m_numberFormat = DECNUM;

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

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

void CPortIODlg::OnButtonAbout() 
{
  // TODO: Add your control notification handler code here
  CAboutDlg   dlgAbout;
  dlgAbout.DoModal();
}

void CPortIODlg::OnRead() //读
{
  BOOL bOK = UpdateInternalVariables();	//Get Data
  
  TRACE("Address to read - m_addr %d\n", m_dwAddr);
  if (bOK)
  {
	  switch (m_ioSize) {
		case BYTEIO:
		  m_dwValue = DlPortReadPortUchar(m_dwAddr);
		  break;
		case WORDIO:
		  m_dwValue = DlPortReadPortUshort(m_dwAddr);
		  break;
		case DWORDIO:
		  m_dwValue = DlPortReadPortUlong(m_dwAddr);
		  break;
	  }
	  TRACE("Value read - m_dwAddr %d\n", m_dwAddr);
  }

  FormatUpdateDiaglog();	//Write Data
}

void CPortIODlg::OnWrite() //写
{
  BOOL bOK = UpdateInternalVariables();	//Get Data

  TRACE("m_dwValue %d m_dwAddr %d\n", m_dwValue, m_dwAddr);
  if (bOK) 
  {
	  switch (m_ioSize) {
		case BYTEIO:
		  DlPortWritePortUchar(m_dwAddr, (UCHAR)m_dwValue);
		  break;
		case WORDIO:
		  DlPortWritePortUshort(m_dwAddr, (USHORT)m_dwValue);
		  break;
		case DWORDIO:
		  DlPortWritePortUlong(m_dwAddr, m_dwValue);
		  break;
	  }
  }
   
}

void CPortIODlg::OnRadioDec() 
{
	m_bDec = TRUE;	
	UpdateInternalVariables();
	FormatUpdateDiaglog();
}

void CPortIODlg::OnRadioHex() 
{
	m_bDec = FALSE;
	UpdateInternalVariables();
	FormatUpdateDiaglog();
}

BOOL CPortIODlg::UpdateInternalVariables()
{
	//Function is used to get data from Dialogs and translate it into decimal data
	
	//First read string variables from dialog
	UpdateData(TRUE);
	
	//First handle the reading and formating of the address field
	if(m_addr != "")	//make sure a address value was entered
	{
		CString Hex =  m_addr.Left( 2 );
		if(Hex.Compare("0x" ) == 0)	  //Was a hex number entered
		{
			sscanf(m_addr,"0x%x", &m_dwAddr);
		}
		else   //a decimal number 
		{
			sscanf(m_addr,"%d", &m_dwAddr);
		}
		//Perform range checking on address
		if (((m_dwAddr >= 256) && (m_dwAddr <=1023)) == FALSE)	//Out of range
		{
			AfxMessageBox("Address entered out of range! Address must be >= 256 and  <= 1023", MB_ICONSTOP);
			return FALSE;

		}
	}
	else //if no data is entered inform user and exit
	{
		AfxMessageBox("Address was not entered", MB_ICONSTOP);
		return FALSE;
	}

	
	//Second handle the reading and formating of the Value field
	if(m_value != "")	//if address was entered update variable
	{
		CString Hex =  m_value.Left( 2 );
		if(Hex.Compare("0x" ) == 0)	  //Was a hex number entered
		{
			sscanf(m_value,"0x%x", &m_dwValue);
		}
		else   //a decimal number 
		{
			sscanf(m_value,"%d", &m_dwValue);
		}
		
	}

	return TRUE;

}


void CPortIODlg::FormatUpdateDiaglog()
{
	//Write Data Back to Screen
	if (m_bDec) 
	{
		m_value.Format("%d", m_dwValue);
		m_addr.Format("%d", m_dwAddr);
	}
	else
	{	//format Data into a Hexadecimal #
		m_value.Format("0x%0000x", m_dwValue);
		m_addr.Format("0x%0000x", m_dwAddr);
	}

	UpdateData(FALSE);
	return;


}