code: async def set_sampling_interval(self, interval):
          
          data = [interval & 0x7f, (interval >> 7) & 0x7f]
          await self._send_sysex(PrivateConstants.SAMPLING_INTERVAL, data)
docs: This method sends the desired sampling interval to Firmata.
          Note: Standard Firmata  will ignore any interval less than
                10 milliseconds
  
          :param interval: Integer value for desired sampling interval
                           in milliseconds
  
          :returns: No return value.