code: func (d *BMP180Driver) Pressure() (pressure float32, err error) {
  	var rawTemp int16
  	var rawPressure int32
  	if rawTemp, err = d.rawTemp(); err != nil {
  		return 0, err
  	}
  	if rawPressure, err = d.rawPressure(d.Mode); err != nil {
  		return 0, err
  	}
  	return d.calculatePressure(rawTemp, rawPressure, d.Mode), nil
  }
docs: // Pressure returns the current pressure, in pascals.