Weighing Functions

1. CheckWIM * DEPRECATED - New apps should use MnBdSetWIM *
2. DLCRepeatMultiIncludeCellWts
3. FormatGrossWt
4. FormatNetWt
5. FormatTareWt
6. FormatWt
7. GetBelowZero
8. GetCapacity
9. GetCenterZero
10. GetCurUnitsLabel
11. GetDecimal
12. GetGrossWt
13. GetInterval
14. GetMotion
15. GetNetWt
16. GetNumScales
17. GetOverCap
18. GetProcessScale
19. GetSecUnitsLabel
20. GetTareWt
21. GetUnitsLabel
22. GetWtError
23. IsGrossWtChanged
24. IsNetWtChanged
25. IsTareWtChanged
26. IsWtStatusChanged
27. IsWtUnitsChanged
28. MnBdClearEvent
29. MnBdClose
30. MnBdGetErr
31. MnBdGetErrMsg
32. MnBdGetErrMsgStr
33. MnBdOpen
34. MnBdProcess * DEPRECATED - New apps should use StartRepeatMulti *
35. MnBdRead
36. MnBdRequest
37. MnBdSetEvent
38. MnBdSetWIM
39. MnBdShutdown
40. MnBdStartup
41. RequestWt * DEPRECATED - New apps should use StartRepeatMulti *
42. ResetPrevGrossWt
43. ResetPrevNetWt
44. ResetPrevTareWt
45. ResetPrevWtStatus
46. ResetPrevWtUnits
47. SetTareCurrent
48. SetTareValue
49. SetWIM * DEPRECATED - New apps should use MnBdSetWIM *
50. StartRepeatMulti
51. StartRepeatWt * DEPRECATED - New apps should use StartRepeatMulti *
52. StopRepeatMulti
53. StopRepeatWt * DEPRECATED - New apps should use StopRepeatMulti *
54. ZeroScale

Minimal Weight Indicator Sample Program

This is an example of a very simple weight indicator program to display the gross weight. "Zero" and "Quit" buttons are provided. This is a minimal program for demonstration purposes. An application to be used in a production environment should have additional code to display scale status such as "Motion" and blank weight display on over capacity or weight error.

simple_ind.h:

#ifndef SIMPLE_IND_H_
#define SIMPLE_IND_H_

EVENT(MainScreenShow);
EVENT(Zero);
EVENT(Quit);

BACKGROUND_EVENT(Comm);

MNBD_EVENT(MultiRcv);
EVENT(Exit);



#endif /* SIMPLE_IND_H_ */

simple_ind.cpp:

#include "cardinal825.h"

#include "simple_ind.h"

int main()
{
        InitLCD();

        SetCurColor(COLOR_ATTENTION);
        DisplayText(0, 0, "Simple Indicator Example");

        ReadTouchCal();
        OpenBeeper();
        OpenTouch();

        MnBdStartup();

        MnBdSetEvent(MNBD_REQ_REP_MULTI, MnBdEventMultiRcv);
        
        SetBackgroundEvent(BackgroundEventComm);

        if(StartRepeatMulti(100) != OK)
        {
                DisplayText(0, FONT_HEIGHT, "Error starting repeat multi");
                return 0;
        }

        FORM_INIT(Main, EventMainScreenShow, NULL, NULL, NULL, nFormFlgNone);

        FORM_ADD_BUTTON(Main, Exit, 0, FONT_HEIGHT * 12, " Exit ", 'X', EventExit, FORM_BUTTON_INVERT);
        FORM_ADD_BUTTON(Main, Zero,    0,   120,  "Zero",  'Z', EventZero,  FORM_BUTTON_OUTLINE);
        FORM_ADD_BUTTON(Main, Quit,    0,   200,  "Quit",  'Q', EventQuit,  FORM_BUTTON_OUTLINE);

        FORM_SHOW(Main);
        FORM_RUN(Main);
        FORM_HIDE(Main);

        MnBdClearCommEvent();

        StopRepeatMulti();
        SetBackgroundEvent(NULL);

        MnBdShutdown();

        return 0;
}

EVENT(MainScreenShow)
{
        ClearLCD();
        SetCurColor(COLOR_ATTENTION);
        DisplayText(0, 0, "Simple Weight Indicator");

        ResetPrevGrossWt();
        return 0;
}

EVENT(Exit)
{
        return 1; // return non-zero to exit form
}

MNBD_EVENT(MultiRcv)
{
        int n;
        int y = FONT_HEIGHT;
        for(n = 1; n <= GetNumScales(); n++)
        {
                if(IsGrossWtChanged(n))
                {
                        DisplayText((FONT_WIDTH * 10), y, GetChangedGrossWt(n), 0, BIG_FONT);
                }
                y += (FONT_HEIGHT * 2);
        }
        return 0;
}

BACKGROUND_EVENT(Comm)
{
        // This gets called every few milliseconds or so when main code is in a CForm run or a SleepSeconds statement.
        // MnBdRead must be called to process any messages received from the mainboard. 
        // MnBdRead will call event MultiRcv that we registered previously when scale and DIO status is 
        // received.

        int n;
        // in case we have more I/O cards than scales change this
        for(n = 0; n <= GetNumScales(); n++)
        {
                // 0 = MNBD_DEV, 1 .. Scales and I/O cards
                MnBdRead(n);
        }

        return 0;
}

EVENT(Zero)
{
        ZeroScale(1);
        return 0;
}

EVENT(Quit)
{
        // Return non-zero to exit the form
        return 1;
}