usingapidlg.cpp

WT的TI DSP TMS320VC5410的USB应用代码例程

// UsingAPIDlg.cpp : implementation file
//

#include "stdafx.h"
#include "UsingAPI.h"
#include "UsingAPIDlg.h"

#include "5410api.h"

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

#define buff_len 4096

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

/////////////////////////////////////////////////////////////////////////////
// CUsingAPIDlg dialog

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

void CUsingAPIDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CUsingAPIDlg)
	DDX_Control(pDX, IDC_OPEN, m_open);
	DDX_Text(pDX, IDC_EDIT_WRITE, m_string);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CUsingAPIDlg, CDialog)
	//{{AFX_MSG_MAP(CUsingAPIDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_OPEN, OnOpen)
	ON_BN_CLICKED(IDC_WRITE, OnWrite)
	ON_BN_CLICKED(IDC_READ, OnRead)
	ON_BN_CLICKED(IDC_RESET, OnReset)
	ON_BN_CLICKED(IDC_RESET_FIFO, OnResetFifo)
	ON_BN_CLICKED(IDC_FIFO_STATUS, OnFifoStatus)
	ON_BN_CLICKED(IDC_CLEAR, OnClear)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CUsingAPIDlg message handlers

BOOL CUsingAPIDlg::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
	flagOpen=FALSE;
	CAboutDlg AboutDlg;
	AboutDlg.DoModal();
	CWnd::SetDlgItemText(IDC_EDIT_DEVSTATUS,"设备状态:");
	CWnd::SetDlgItemText(IDC_EDIT_HINT,"提示: 请先打开设备.");
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

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

void CUsingAPIDlg::OnOpen() 
{
	// TODO: Add your control notification handler code here
	if(flagOpen==FALSE)
	{
		hDevHandle=OpenUSB();	    //句柄hDevHandle是类CUsingAPIDlg的一个public成员变量(类型HANDLE)

		if(hDevHandle== INVALID_HANDLE_VALUE)
		{
			MessageBox("设备不能被打开!");
			CWnd::SetDlgItemText(IDC_EDIT_DEVSTATUS,"设备状态: 未打开");
			return;
		}
		else
		{
			flagOpen=TRUE;
			CWnd::SetDlgItemText(IDC_EDIT_DEVSTATUS,"设备状态: 已打开");
			CWnd::SetDlgItemText(IDC_EDIT_HINT,"提示: 可以进行写数据到FIFO或检查FIFO的状态等操作.");
		}
	}
	else
		MessageBox("设备状态: 已打开");
}

void CUsingAPIDlg::OnWrite() 
{
	// TODO: Add your control notification handler code here
	LPBYTE outbuffer;           //类型LPBYTE：指向BYTE的指针。

	if(flagOpen==TRUE)
	{
		CWnd::SetDlgItemText(IDC_EDIT_HINT,"提示: 选择文件(如文本文件:*.txt,*.bin,*.dat等)写到USB...");
		outbuffer=(LPBYTE)malloc(buff_len);

		for(int j=0;j<buff_len;j++)
		{
	//		*(outbuffer+j)=0x30+j;              //for debug
			*(outbuffer+j)=0;
		}

		CFileDialog dlg(TRUE,                //construct a File Open dialog box 
						"*",               //Specifies the default filename extension
						"*.*",             //Specifies the initial filename that appears in the filename edit box
						OFN_HIDEREADONLY ,   //read only
						"TXT Files (*.txt)|*.txt|Binary Files (*.bin)|*.bin\
	            		|Data Files (*.dat;*.ini)|*.dat; *.ini|All Files (*.*)|*.*||",NULL);

		dlg.m_ofn.lpstrTitle = "选择要打开的文件名";
		dlg.m_ofn.nFilterIndex=1;
		if (dlg.DoModal() != IDOK)
			return;

	//	CByteArray arrByte;
		TRY
		{
			CFile fileRead(dlg.GetPathName(), CFile::modeRead);
			unsigned char pBuf[buff_len];
			int nCount = 0;

			while (nCount = fileRead.Read(pBuf, buff_len)) 
			{
	//			arrByte.SetSize(nCount);
				for (int i = 0; i < nCount; i++)
				{
					*(outbuffer+i) = pBuf[i];
				}
			}
		}
		CATCH (CFileException, e)
		{
			MessageBox("文件" + e->m_strFileName + "操作出错！");
			e->Delete();
		}
		END_CATCH

	    bResult=USB_Write(hDevHandle, outbuffer, buff_len);  //bResult是类CUsingAPIDlg的一个public成员变量（类型BOOL）
		CWnd::SetDlgItemText(IDC_EDIT_HINT,"提示: 数据已写到FIFO，可读或检测fifo中的数据．");      
	}
	else
	{
		MessageBox("请先打开USB设备!");
	}
}

void CUsingAPIDlg::OnRead() 
{
	// TODO: Add your control notification handler code here
	if(flagOpen==TRUE)
	{
		if(FIFO_Status(hDevHandle))
		{
			LPBYTE inbuffer;
			char  str[buff_len];

			inbuffer=(LPBYTE)malloc(buff_len);

   			bResult=USB_Read(hDevHandle, inbuffer, buff_len);	//bResult是类CUsingAPIDlg的一个public成员变量（类型BOOL）

			for(int i=0;i<buff_len;i++)
			{
		    	str[i]=*(inbuffer+i);
			}

			m_string=str;
			CWnd::SetDlgItemText(IDC_EDIT_HINT,"提示: 显示屏只能显示文本文件的数据.");
			UpdateData(FALSE);
		}
		else
		{
			MessageBox("没有数据在FIFO中!");
		}
	}
	else MessageBox("请先打开USB设备!");
}

void CUsingAPIDlg::OnReset() 
{
	// TODO: Add your control notification handler code here

	if(flagOpen==TRUE)
	{
    	Reset_DSP(hDevHandle); 
		CWnd::SetDlgItemText(IDC_EDIT_HINT,"提示: DSP和FIFO已复位.");
	}
	else
	{
		MessageBox("请先打开USB设备!");
	}
}

void CUsingAPIDlg::OnResetFifo() 
{
	// TODO: Add your control notification handler code here
	if(flagOpen==TRUE)
	{
    	Reset_FIFO(hDevHandle);
    	CWnd::SetDlgItemText(IDC_EDIT_HINT,"提示: 复位FIFO.");
	}
	else
	{
		MessageBox("请先打开USB设备!");
	}
}

void CUsingAPIDlg::OnFifoStatus() 
{
	// TODO: Add your control notification handler code here
	int DataNum;
	char str[buff_len];
	if(flagOpen==TRUE)
	{
		DataNum=FIFO_Status(hDevHandle);
		if(DataNum!=0)
		   sprintf(str,"FIFO中有数据．");
        else 
		   sprintf(str,"FIFO中无数据.");
		MessageBox(str);
	}
	else
	{
		MessageBox("请先打开USB设备!");
	}
}

void CUsingAPIDlg::OnClear() 
{
	// TODO: Add your control notification handler code here
	m_string="";
	UpdateData(FALSE);
}