I want to connect my Raspberry Pi (Model B rev2) with XBMC (see raspbmc.org) to an old steam powered CRT TV that has a SCART input. Hooking up the Raspberry Pi to the TV via a single SCART cable is not the problem, since there are dedicated pins for the composite video and stereo audio signals for that.
However, the challenge is to get AV.link to work over SCART as well. I want this to work, so I can use my TV remote to control XBMC's menus on the Raspberry Pi.
Is there a way to implement an AV.link device using a Raspberry Pi? Maybe with a USB peripheral, or even using the GPIO port? If that doesn't exist yet, could the GPIO port be used to make that happen at all (in theory)?