adc 12 bit

Why is it converted to 10 bit if the next line assumes it is 12 bit wide.

https://github.com/arduino/ArduinoCore-sam/blob/eed66e7977b4037f49bbcd832437d4bcf72c0f3f/cores/arduino/wiring_analog.c#L115

Open cores/arduino/wiring_analog.c at the linked line and trace how the ADC value is converted before the following 12-bit operation. Check the surrounding analog-read implementation and relevant repository tests or examples, if present. Done means resolving the width mismatch with behavior that is consistent throughout the ADC path.

Written by the indexing model from the issue text.