code: def send_packet(self, pk):
          
          # if self.out_queue.full():
          #    self.out_queue.get()
          if (self.cfusb is None):
              return
  
          try:
              dataOut = (pk.header,)
              dataOut += pk.datat
              self.cfusb.send_packet(dataOut)
          except queue.Full:
              if self.link_error_callback:
                  self.link_error_callback(
                      'UsbDriver: Could not send packet to Crazyflie')
docs: Send the packet pk though the link