getMode() gets the wrong bits

[marcobergman]

In the snipplet provided, the values to the Adafruit_I2CRegisterBits should be ADC_Config, 4, 12, just like in the setMode() function.

INA228_MeasurementMode Adafruit_INA228::getMode(void) {
  Adafruit_I2CRegisterBits mode = Adafruit_I2CRegisterBits(Config, 3, 0);
  return (INA228_MeasurementMode)mode.read();
}

[caternuson]

Good catch. Just adding datasheet info for ref:

Register should be ADC_Config:

Bits should be 15-12 (4 bits total, shifted by 12):