code: func (i *INA3221Driver) GetBusVoltage(channel INA3221Channel) (float64, error) {
  	value, err := i.getBusVoltageRaw(channel)
  	if err != nil {
  		return 0, err
  	}
  
  	return float64(value) * .001, nil
  }
docs: // GetBusVoltage gets the bus voltage in Volts