gpsdlg.cpp

该源码介绍了使用GPS传感器的进行导航系统开发的步骤,包含5个文件,其中Serial.cpp为串口操作 GPSDlg.cpp定义了从GPS传感器中读取位置参数并将位置映射到数字地图上, .BMP为数字

// GPSDlg.cpp : implementation file
//

#include "stdafx.h"
#include "GPS.h"
#include "GPSDlg.h"
#include "stdio.h"
#include "serial.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()

/////////////////////////////////////////////////////////////////////////////
// CGPSDlg dialog

CGPSDlg::CGPSDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CGPSDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CGPSDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CGPSDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CGPSDlg)
	DDX_Control(pDX, IDC_LOCATION, m_location);
	DDX_Control(pDX, IDC_LON, m_lon);
	DDX_Control(pDX, IDC_LAT, m_lat);
	DDX_Control(pDX, IDC_ALT, m_alt);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CGPSDlg, CDialog)
	//{{AFX_MSG_MAP(CGPSDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CGPSDlg message handlers

BOOL CGPSDlg::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
	GpsReceiver();
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

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

void CGPSDlg::GpsReceiver()
{
	CString temp;
	CPoint point;
	int iLat,iLon;
	unsigned char ch[1],Lat[12],Lon[13],Alt[11],string[60];
	unsigned int i;
	CSerial serObj;	
	if(!serObj.Open(1,9600,'n',8,1))
	{
		  AfxMessageBox("failed to open Comm Port");
		  return;
	}


	while(1)
	{
		if(serObj.ReadData(ch,1) > 0)
		{	
			if((ch[0] == 'g') || (ch[0] == 'G'))
			{
				serObj.ReadData(ch,1);
				if((ch[0] == 'p') || (ch[0] == 'P'))
				{
					serObj.ReadData(ch,1);
					if((ch[0] == 'g') || (ch[0] == 'G'))
					{
						serObj.ReadData(ch,1);
						if((ch[0] == 'g') || (ch[0] == 'G'))
						{
							serObj.ReadData(ch,1);
							
							if((ch[0] == 'a') || (ch[0] == 'A'))
							{
								serObj.ReadData(ch,1);  // ','
								if(ch[0] != ',')
									continue;
								serObj.ReadData(ch,1); //first char of time of ',' 
								if(ch[0] == ',')
									continue;
								serObj.ReadData(string,55); //remaining char of time
								string[55] = '\0';
									
								Lat[0] = string[6];
								Lat[1] = string[7];
								Lat[2] = string[8];
								Lat[3] = string[9];
								Lat[4] = string[10];
								Lat[5] = string[11];
								Lat[6] = string[12];
								Lat[7] = string[13];
								Lat[8] = string[14];
								Lat[9] = ' ';
								Lat[10] = string[16];
								Lat[11] = '\0';

								Lon[0] = string[18];
								Lon[1] = string[19];
								Lon[2] = string[20];
								Lon[3] = string[21];
								Lon[4] = string[22];
								Lon[5] = string[23];
								Lon[6] = string[24];
								Lon[7] = string[25];
								Lon[8] = string[26];
								Lon[9] = string[27];

								Lon[10] = ' ';
								Lon[11] = string[29];
								Lon[12] = '\0';

								for(i=0;i<10;i++)
								{
									Alt[i] = string[41+i];
									if(string[41+i] == 'M')
									{
										Alt[41+i-1] = ' '; 
										Alt[41+i+1] = '\0';
										break;
									}
								}
								
								temp.Format("Lat : %s",Lat);
								m_lat.SetWindowText(temp);

								temp.Format("Lon : %s",Lon);
								m_lon.SetWindowText(temp);

								temp.Format("Alt : %s",Alt);
								m_alt.SetWindowText(temp);
								
								Lat[4] = '\0';
								Lon[5] = '\0';
								
								temp.Format("%s",Lat);
								iLat = atoi(temp);
								
								temp.Format("%s",Lon);
								iLon = atoi(temp);

								point.x = iLon; 
								point.y = iLat;

								m_location.SetWindowPos(NULL,point.x,point.y,0,0,SWP_NOSIZE);
								continue;

							}
						}
					}
				}
			}				
		}
	}
    
}