enum {
ATM128_ADC_VREF_OFF = 0, //!< VR+ = AREF and VR- = GND
ATM128_ADC_VREF_AVCC = 1,//!< VR+ = AVcc and VR- = GND
- ATM128_ADC_VREF_RSVD,
+ ATM128_ADC_VREF_1_1 = 2, //!< VR+ = 1.1V and VR- = GND
ATM128_ADC_VREF_2_56 = 3,//!< VR+ = 2.56V and VR- = GND
};