Code:

unsigned  usbFunctionSetup(uchar data[8])
{

   usbRequest_t    *rq = (void *)data;
   if((rq->bmRequestType & USBRQ_TYPE_MASK) == USBRQ_TYPE_CLASS){    /* class request type */
      if(rq->bRequest == USBRQ_HID_GET_REPORT){  /* wValue: ReportType (highbyte), ReportID (lowbyte) */
         /* we only have one report type, so don't look at wValue */
         return 8;
      }
   }
   else if(rq->bRequest == USBRQ_HID_SET_REPORT){
      if (rq->wLength.word == 1) { /* We expect one byte reports */
        expectReport=1;
        return 0xFF; /* Call usbFunctionWrite with data */
      }
    }
   else
   {
   /* no vendor specific requests implemented */
   }
   return 0;
}

Code:

uchar   usbFunctionWrite(uchar *data, uchar len)
{
   blinkLed(1);

}