pulse.c

16 relay output channels and 16 isolated digital input channels LED indicators to show activated

                        (LPARAM)((LPSTR)szBuffer));
        sprintf(szBuffer, "%2.1f", gfUpCycle);
        SendDlgItemMessage(hDlg, IDC_UPCYCLE, EM_REPLACESEL, 0,
                        (LPARAM)((LPSTR)szBuffer));


        return TRUE;

    case WM_COMMAND :
         switch (LOWORD(wParam))
         {
            case IDOK :

              //
              // get device selection
              //

              if ((dwIndex = SendDlgItemMessage(hDlg, IDC_DEVICE,
                           CB_GETCURSEL, 0, 0)) != CB_ERR)
                   gwDevice = (WORD)dwIndex;


              //
              // get sub-device selection
              //

              if ((dwIndex = SendDlgItemMessage(hDlg, IDC_MODULE,
                           CB_GETCURSEL, 0, 0)) != CB_ERR)
                   gwSubDevice = (WORD)dwIndex;


               //
               // get channel number
               //

               if (SendDlgItemMessage(hDlg, IDC_ECHANNEL,
                           EM_GETMODIFY, 0, 0))
               {
                    SendDlgItemMessage(hDlg, IDC_ECHANNEL,
                            WM_GETTEXT, 10, (LPARAM)(LPSTR)szBuffer) ;
                    gwChannel = atoi(szBuffer);
                    SendDlgItemMessage(hDlg, IDC_ECHANNEL,
                              EM_SETMODIFY, FALSE, 0) ;
               }


               //
               // get gate period
               //

               SendDlgItemMessage(hDlg, IDC_GATEPERIOD, WM_GETTEXT, 13,
                    (LPARAM)(LPSTR)szBuffer) ;
               gfGatePeriod = (float)atof(szBuffer);

               SendDlgItemMessage(hDlg, IDC_UPCYCLE, WM_GETTEXT, 13,
                    (LPARAM)(LPSTR)szBuffer) ;
               gfUpCycle = (float)atof(szBuffer);


               EndDialog(hDlg, 0);
               return TRUE;


            case IDCANCEL :
                EndDialog(hDlg, 0);
                return TRUE;


            case IDC_DEVICE :

                //
                // When device selection is changed, it needs to
                // re-initialize sub-device combobox and input range
                // combobox.
                //

                if (HIWORD(wParam) == CBN_SELCHANGE)
                {
                    if ((dwIndex = SendDlgItemMessage(hDlg, IDC_DEVICE,
                        CB_GETCURSEL, 0, 0)) != CB_ERR)
                         gwDevice = (WORD)dwIndex;
                    else
                        return TRUE;


                    // ------------------------------------------------------
                    // Initialize Module Combobox for COM port or CAN devices
                    // ------------------------------------------------------

                    // check any device attached on this COM port or CAN

                    gnNumOfSubdevices = DeviceList[gwDevice].nNumOfSubdevices;
                    if (gnNumOfSubdevices > MAX_DEVICES)
                        gnNumOfSubdevices = MAX_DEVICES;


                    // retrieve the information of all installed devices

                    if (gnNumOfSubdevices != 0)
                    {
                        if ((ErrCde = DRV_DeviceGetSubList(
                            (DWORD)DeviceList[gwDevice].dwDeviceNum,
                            (DEVLIST far *)&SubDeviceList[0],
                            (SHORT)gnNumOfSubdevices,
                            (SHORT far *)&nOutEntries)) != (LONG)SUCCESS)
                        {
                            DRV_GetErrorMessage(ErrCde,(LPSTR)szErrMsg);
                            MessageBox(hMainWnd, (LPCSTR)szErrMsg,
                                "Driver Message", MB_OK);
                            return TRUE;
                        }


                        // initialize the Module List Combobox with the
                        // retrieved information

                        EnableWindow(GetDlgItem(hDlg, IDC_MODULE), TRUE);
                        SendDlgItemMessage(hDlg, IDC_MODULE, CB_RESETCONTENT,
                            0, (LPARAM)((LPSTR)0));

                        for (i = 0; i < gnNumOfSubdevices; i++)
                            SendDlgItemMessage(hDlg, IDC_MODULE, CB_ADDSTRING, 0,
                                (LPARAM)((LPSTR)SubDeviceList[i].szDeviceName));

                        gwSubDevice = 0;

                        SendDlgItemMessage(hDlg, IDC_MODULE, CB_SETCURSEL,
							(WPARAM)gwSubDevice, (LPARAM)0);
                    }
                    else
                    {
                        EnableWindow(GetDlgItem(hDlg, IDC_MODULE), FALSE);
                        SendDlgItemMessage(hDlg, IDC_MODULE, CB_RESETCONTENT,
                            0, (LPARAM)((LPSTR)0));
                    }
                }

                return TRUE;
         }

         break;
    }

    return FALSE ;
}


/***************************************************************************
    FUNCTION: MainWndProc(HWND, unsigned, WPARAM, LPARAM)

    PURPOSE:  Processes messages

    MESSAGES:

        WM_CREATE     - create window
        WM_COMMAND    - application menu (About dialog box)
        WM_DESTROY    - destroy window
****************************************************************************/

long FTYPE MainWndProc
(
    HWND        hWnd,                          // window handle
    unsigned    message,                       // type of message
    WPARAM      wParam,                        // additional information
    LPARAM      lParam                         // additional information
)
{
    static  HANDLE  hInstance ;
    HMENU           hMenu;
    HDC             hdc;
    char            szBuffer[120];
    RECT            rect;

    switch (message)
    {
        case WM_CREATE:

            //
            // initialize Stop Menu
            //

            hMenu = GetMenu(hWnd);
            EnableMenuItem(hMenu, IDM_STOP, MF_BYCOMMAND | MF_GRAYED);

            hInstance = ((LPCREATESTRUCT) lParam)->hInstance ;

            lpfnConfigDlgProc = MakeProcInstance (ConfigDlgProc, hInstance) ;

            return 0 ;

        case WM_COMMAND:     /* message: from application menu */

            hMenu = GetMenu(hWnd);

            switch (LOWORD(wParam))
            {
                case IDM_SETTING :
                    DialogBox (hInstance, MAKEINTRESOURCE(IDD_SETTING),
                         hWnd, lpfnConfigDlgProc) ;
                    return 0;

                case IDM_STOP :

                    //
                    // counter reset
                    //

                    if ((ErrCde = DRV_CounterReset(DriverHandle,
                        (LPARAM)gwChannel)) != 0)
                    {
                        DRV_GetErrorMessage(ErrCde,(LPSTR)szErrMsg);
                        MessageBox(hWnd,(LPCSTR)szErrMsg, "Driver Message", MB_OK);
                    }

                    DRV_DeviceClose((LONG far *)&DriverHandle);

                    bRun = FALSE;

                    //
                    // reset menu item status
                    //

                    EnableMenuItem(hMenu, IDM_STOP, MF_BYCOMMAND | MF_GRAYED);
                    EnableMenuItem(hMenu, IDM_START, MF_BYCOMMAND | MF_ENABLED);

                    return 0;

                case IDM_START :

                    //
                    // Open Device
                    //

                    if (gnNumOfSubdevices == 0)
                        ErrCde = DRV_DeviceOpen(
                            DeviceList[gwDevice].dwDeviceNum,
                                (LONG far *)&DriverHandle);
                    else
                        ErrCde = DRV_DeviceOpen(
                            SubDeviceList[gwSubDevice].dwDeviceNum,
                                (LONG far *)&DriverHandle);

                    if (ErrCde != SUCCESS)
                    {
                        strcpy(szErrMsg,"Device open error !");
                        MessageBox(hWnd,(LPCSTR)szErrMsg,"Device Open",MB_OK);
                        return 0;
                    }


                    //
                    // get number of counter channels
                    //

                    ptDevFeatures.buffer = (LPDEVFEATURES)&DevFeatures;
                    ptDevFeatures.size = sizeof(DEVFEATURES);
                    if ((ErrCde = DRV_DeviceGetFeatures(DriverHandle,
                        (LPT_DeviceGetFeatures)&ptDevFeatures)) != SUCCESS)
                    {
                        DRV_GetErrorMessage(ErrCde,(LPSTR)szErrMsg);
                        MessageBox(hWnd,(LPCSTR)szErrMsg,"Driver Message",MB_OK);
                        DRV_DeviceClose((LONG far *)&DriverHandle);
                        return 0;
                    }

                    // check number of counter channels
                    if (DevFeatures.usMaxTimerChl == 0)
                    {
                        MessageBox(hWnd,(LPCSTR)"No Counter Channel",
                            "Driver Message",MB_OK);
                        DRV_DeviceClose((LONG far *)&DriverHandle);
                        return 0;
                    }


                    //
                    // start counter
                    //

                    ptCounterPulseStart.counter  = gwChannel;
						  //changping change 
                    ptCounterPulseStart.period   = 1/gfGatePeriod;
                    ptCounterPulseStart.UpCycle  = ptCounterPulseStart.period/2;
						  //changping change end
                    ptCounterPulseStart.GateMode = gwGateMode;

                    if((ErrCde = DRV_CounterPulseStart(DriverHandle,
                         (LPT_CounterPulseStart)&ptCounterPulseStart)) != 0)
                    {
                        DRV_GetErrorMessage(ErrCde,(LPSTR)szErrMsg);
                        MessageBox(hWnd,(LPCSTR)szErrMsg, "Driver Message", MB_OK);
                        return TRUE;
                    }


                    //
                    // enable Stop Menu item and disable the others
                    //

                    EnableMenuItem(hMenu, IDM_STOP, MF_BYCOMMAND | MF_ENABLED);
                    EnableMenuItem(hMenu, IDM_START, MF_BYCOMMAND | MF_GRAYED);

                    bRun = TRUE;

                    //
                    // display
                    //

                    hdc = GetDC(hWnd);
                    GetClientRect(hWnd, &rect);
                    sprintf(szBuffer, "Pulse Output Running ...... ");
                    DrawText(hdc, szBuffer, -1, &rect,
                        DT_SINGLELINE | DT_CENTER | DT_VCENTER);
                    ReleaseDC(hWnd, hdc);

                    return 0;
            }
            return 0;

        case WM_DESTROY:
            if (bRun == TRUE)
            {
                // counter reset
                if( (ErrCde = DRV_CounterReset(DriverHandle,
                    (LPARAM)gwChannel)) != 0)
                {
                    DRV_GetErrorMessage(ErrCde,(LPSTR)szErrMsg);
                    MessageBox(hWnd,(LPCSTR)szErrMsg, "Driver Message", MB_OK);
                }

                DRV_DeviceClose((LONG far *)&DriverHandle);
            }
            PostQuitMessage(0);
            break;

        default:
            return (DefWindowProc(hWnd, message, wParam, lParam));
    }

    return ((LONG)NULL);
}