If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Can you clarify what it means "to measure grounding"? How are the signals applied to the ADC?
Can you also provide the register settings and a larger picture of the schematic (or just a PDF of the schematic)? I cannot make the image you provided bigger so the schematic is hard to read
