code: async def i2c_config(self, read_delay_time=0):
          
          data = [read_delay_time & 0x7f, (read_delay_time >> 7) & 0x7f]
          await self._send_sysex(PrivateConstants.I2C_CONFIG, data)
docs: NOTE: THIS METHOD MUST BE CALLED BEFORE ANY I2C REQUEST IS MADE
          This method initializes Firmata for I2c operations.
  
          :param read_delay_time (in microseconds): an optional parameter,
                                                    default is 0
  
          :returns: No Return Value