[En-Nut-Discussion] Unified GPIO implementation

[Thiago A. Corrêa]

Hi All,


     Yesterday I commited to trunk a change to let users of AVR32
select the pinset for the USARTs. I'm attempting to follow the wiki
article, and I belive it's a solution that is suitable for all
platforms that have multifunction pins.
     Basically, there is a lua function that returns the valid
anternate sets in repository.nut and a couple of constant defines in
cfg/arch/gpio.h

     Next in my agenda would be to implement the new and modified
constants in the article for the GpioPinConfig call.

Kind Regards,
    Thiago A. Correa