I have a Sam3x (Arduino Due hardware, but I don't use the Arduino IDE or libraries, and I don't use the Atmel libraries, just the register interface in sam.h).
I have multiple pins configures as ADC pins. How can I do an AD conversion on one of these pins? The way the relevant datasheet chapter is written seems to suppose that I always want to do a conversion of ALL pins that are configured as input.
Datasheet http://www.atmel.com/images/atmel-11057-32-bit-cortex-m3-microcontroller-sam3x-sam3a_datasheet.pdf ADC starts at page 1317.