The ADC0GN register is coming up as zero after reset, and the conversion results are always zero. Running a full scale calibration produces a new gain calibration for ADC1 but not for ADC0. Do I have to use PGA gain 1 for full scale calibration?
Yes, self-gain calibration works only when the gain = 1, do not use it when the gain > 1.
It's possible that the value in ADC0GN register is 0 due to the factory value is zero.
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