code: func (d *ADS1x15Driver) ReadWithDefaults(channel int) (value float64, err error) {
  	return d.Read(channel, d.DefaultGain, d.DefaultDataRate)
  }
docs: // ReadWithDefaults reads the voltage at the specified channel (between 0 and 3).
  // Default values are used for the gain and data rate. The result is in V.