[ARM] LPC1343 USB HID Example automatically sends data to PC?

Code C - [expand]
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// HID Input Report
u8_t InReport;
// HID Output Report
u8_t OutReport;
 
 // Get HID Input Report -> InReport
void GetInReport (void)
{
  InReport = 0x01;
        return;
}
 
 
// Set HID Output Report <- OutReport
void SetOutReport (void)
{
  if(OutReport == 0x01)
        {
                LPC_GPIO1->DATA &= ~(1<<GreenLED);
        }
        else if(OutReport == 0x02)
        {
                LPC_GPIO1->DATA &= ~(1<<BlueLED);
        }
        else
        {
                LPC_GPIO1->DATA |= (1<<GreenLED);
                LPC_GPIO1->DATA |= (1<<BlueLED);
        }
  return;
}
 
int main()
{
        InitializeSystem();
        USBIOClkConfig();
        // GPIO's Power is enabled by default
        // Set Pins as Output pins.
        LPC_GPIO1->DIR |= (1<<GreenLED);
        LPC_GPIO1->DIR |= (1<<BlueLED);
        // USB Initialzation
        USB_Init();
        // USB Connect
        USB_Connect(TRUE);
        while(1)
        {
    // Do Nothing
        }
}

Code C - [expand]
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/*
 *  USB Endpoint 1 Event Callback
 *   Called automatically on USB Endpoint 1 Event
 *    Parameter:       event
 */
 
void USB_EndPoint1 (uint32_t event) {
 
  switch (event) {
    case USB_EVT_IN:
      GetInReport();
      USB_WriteEP(HID_EP_IN, &InReport, sizeof(InReport));
      break;
  }
}