// UsbHostDlg.cpp : implementation file
//

#include "stdafx.h"
#include "UsbHost.h"
#include "UsbHostDlg.h"
#include "process.h"

extern "C"{
#include "setupapi.h"
#include "hidsdi.h"
}  

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

#define USB_VID    (0xXXXX)         // XXXX-十六進制數(shù)，需更改。
#define USB_PID    (0xXXXX)         // XXXX-十六進制數(shù)，需更改。
#define USBRS232_VERSION (0x0001)

#define RID_RECEIVE     (1)
#define RID_TRANSMIT    (2)
#define RID_COMMAND     (3)
#define MAX_DATA_LEN    (6)
#define RECV_DATA_LEN   (8)

struct Rate {
    char *String;
    BYTE parameter; 
} RateTable[] = {
        "default",  0, 
        "2400",     1,
        "4800",     2,
        "9600",     3,
        "19200",    4,
        "38400",    5,
        "57600",    6
};
#define NRATES (sizeof RateTable / sizeof RateTable[0])

#define IDM_RECV_DATA    (WM_USER + 1)
bool g_KeepGoing = false;
void __cdecl RecvThreadFunction(HANDLE hidHandle);

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

/////////////////////////////////////////////////////////////////////////////
// CUsbHostDlg dialog

CUsbHostDlg::CUsbHostDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CUsbHostDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CUsbHostDlg)
		// 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);
    m_HidHandle = INVALID_HANDLE_VALUE;
	m_MaxDataLen = MAX_DATA_LEN;
}

void CUsbHostDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CUsbHostDlg)
	DDX_Control(pDX, IDC_RECV_DATA, m_RecvData);
	DDX_Control(pDX, IDC_SEND_DATA, m_SendData);
	DDX_Control(pDX, IDC_STATUS, m_Status);
	DDX_Control(pDX, IDC_BAUDRATE, m_BaudRate);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CUsbHostDlg, CDialog)
	//{{AFX_MSG_MAP(CUsbHostDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_LINK, OnLink)
	ON_BN_CLICKED(IDC_CUT, OnCut)
	ON_BN_CLICKED(IDC_OPEN, OnOpen)
	ON_BN_CLICKED(IDC_SEND, OnSend)
	ON_BN_CLICKED(IDC_CLEAROPEN, OnClearOpen)
	ON_MESSAGE(IDM_RECV_DATA, OnReceivedData)
	ON_BN_CLICKED(IDC_SAVE, OnSave)
	ON_BN_CLICKED(IDC_CLEARSAVE, OnClearSave)
	ON_EN_CHANGE(IDC_RECV_DATA, OnChangeRecvData)
	ON_CBN_SELCHANGE(IDC_BAUDRATE, OnSelchangeBaudrate)
	ON_BN_CLICKED(IDC_END, OnEnd)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CUsbHostDlg message handlers

BOOL CUsbHostDlg::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
    char i;
    for (i= 0; i< NRATES; i++) 
	{
        m_BaudRate.AddString(RateTable[i].String);
    }      
	m_BaudRate.SelectString(-1,"default");
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

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

void CUsbHostDlg::OnLink() 
{
	// TODO: Add your control notification handler code here
	if(m_HidHandle != INVALID_HANDLE_VALUE)
    {
        m_Status.SetWindowText("RS232-Usb設(shè)備已連接!");
        return;
    }

    GUID hidGuid;

    HidD_GetHidGuid(&hidGuid);

    HDEVINFO hDevInfo = SetupDiGetClassDevs(&hidGuid,
                                            NULL,
                                            NULL,
                                            (DIGCF_PRESENT | DIGCF_DEVICEINTERFACE)); 
    if(!hDevInfo)
    {
        m_Status.SetWindowText("獲取HID設(shè)備信息失敗!");
        return;
    }

    SP_DEVICE_INTERFACE_DATA devInfoData;
    devInfoData.cbSize = sizeof (SP_DEVICE_INTERFACE_DATA);
    int deviceNo = 0;

    SetLastError(NO_ERROR);

    while(GetLastError() != ERROR_NO_MORE_ITEMS)
    {
        if(SetupDiEnumInterfaceDevice (hDevInfo,
                                       0, 
                                       &hidGuid,
                                       deviceNo,
                                       &devInfoData))
        {
            ULONG  requiredLength = 0;
            SetupDiGetInterfaceDeviceDetail(hDevInfo,
                                            &devInfoData,
                                            NULL, 
                                            0,
                                            &requiredLength,
                                            NULL);

            PSP_INTERFACE_DEVICE_DETAIL_DATA devDetail = (SP_INTERFACE_DEVICE_DETAIL_DATA*) malloc (requiredLength);
            devDetail->cbSize = sizeof(SP_INTERFACE_DEVICE_DETAIL_DATA);

            if(! SetupDiGetInterfaceDeviceDetail(hDevInfo,
                                                 &devInfoData,
                                                 devDetail,
                                                 requiredLength,
                                                 NULL,
                                                 NULL)) 
            {
                AfxMessageBox("獲取HID設(shè)備細節(jié)信息失敗!");
                free(devDetail);
                return;
            }

            HANDLE hidHandle = CreateFile(devDetail->DevicePath,
                                          GENERIC_READ | GENERIC_WRITE,
                                          FILE_SHARE_READ | FILE_SHARE_WRITE,
                                          NULL, 
                                          OPEN_EXISTING,         
                                          FILE_FLAG_OVERLAPPED, 
                                          NULL);
            free(devDetail);

            if(hidHandle==INVALID_HANDLE_VALUE)
            {
                AfxMessageBox("獲取HID設(shè)備句柄失敗!");
                return;
            }

            _HIDD_ATTRIBUTES hidAttributes;
            if(!HidD_GetAttributes(hidHandle, &hidAttributes))
            {
                AfxMessageBox("獲取HID設(shè)備屬性失敗!");
                CloseHandle(hidHandle);
                return;
            }