David, I am away from a compiler at this minute but was checking the datasheet on the Firewing Chip. Its not clear if the ADC resolution is 10 or 12 bits. Can you clarify on this?
They can be configured for 10 or 12 bit operation. In 12 bit mode there are some restrictions, which are better explained in chapter 20 of the device datasheet. The Firewing ADC module defaults to 10 bit mode.