code: func (i *INA3221Driver) GetLoadVoltage(channel INA3221Channel) (float64, error) {
  	bv, err := i.GetBusVoltage(channel)
  	if err != nil {
  		return 0, err
  	}
  
  	sv, err := i.GetShuntVoltage(channel)
  	if err != nil {
  		return 0, err
  	}
  
  	return bv + (sv / 1000.0), nil
  }
docs: // GetLoadVoltage gets the load voltage in mV