//---------------------------------------------------------------------------
// InterruptReportCallbackFunction
//---------------------------------------------------------------------------
void InterruptReportCallbackFunction
              (void *	 		target,
               IOReturn 		result,
               void * 			refcon,
               void * 			sender,
               UInt32		 	bufferSize)
{
    HIDDataRef hidDataRef = (HIDDataRef)refcon;
    int index;
    
    if ( !hidDataRef )
        return;

    printf("Buffer = ");

    for ( index=0; index<bufferSize; index++)
        printf("%2.2x ", hidDataRef->buffer[index]);
        
    printf("\n");

}