code: def send_feature_report(self, data, report_id=0x00):
          
          if not self._is_open:
              raise HIDException("HIDDevice not open")
  
          report = bytearray([report_id]) + bytearray(data)
          cdata = ffi.new("const unsigned char[]", bytes(report))
          bytes_written = hidapi.hid_send_feature_report(self._device, cdata, len(report))
  
          if bytes_written == -1:
              raise HIDException("Failed to send feature report to HID device")
  
          return bytes_written
docs: Send a Feature report to a HID device.
  
          Feature reports are sent over the Control endpoint as a Set_Report
          transfer.
  
          Parameters:
              data    The data to send
  
          Returns:
              This function returns the actual number of bytes written