ADC_CHAN
ADC_CHAN(0, IIO_VOLTAGE),
ADC_CHAN(1, IIO_VOLTAGE),
ADC_CHAN(2, IIO_VOLTAGE),
ADC_CHAN(3, IIO_VOLTAGE),
ADC_CHAN(4, IIO_VOLTAGE),
ADC_CHAN(5, IIO_VOLTAGE),
ADC_CHAN(6, IIO_VOLTAGE),
ADC_CHAN(7, IIO_VOLTAGE),