MnBdSetEvent

Specify an event function to be called when a specified response is received from the main board

void MnBdSetEvent(int item, MNBD_EVENT_FNC event);

Parameters

• item - response item such as MNBD_REQ_GET_WT
• event - event function that is called when the response is received

Return Value

This function does not return any value

Remarks

The application must have a background event that calls MnBdRead to facilitate this.

Examples

// Global
CMillisecondTimer timerReqWeight;
int nextReqScale = 1;
...

   MnBdStartup();

   SetBackgroundEvent(BackgroundEventComm);

   MnBdSetEvent(MNBD_REQ_GET_WT, MnBdEventWtRcv);
   timerReqWeight.Start(100, true);

...

MNBD_EVENT(WtRcv)
{
   if(IsGrossWtChanged(nDev))
   {
      DisplayText(0, (FONT_HEIGHT * nDev), GetChangedGrossWt(nDev), 0, BIG_FONT);
   }
   return 0;
}

BACKGROUND_EVENT(Comm)
{
   // Use MnBdRead directly to prevent overhead of MnBdProcess

   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);
   }

   if(timerReqWeight.IsExpired() == true)
   { 
      MnBdRequest(nextReqScale, MNBD_REQ_GET_WT, NO_WAIT_ACK);
      if(nextReqScale == GetNumScales())
         nextReqScale = 1;
      else
         nextReqScale++;
   }
   return 0;
}

See Also

• MnBdClearEvent
• MnBdRead