Hi all, 

I've recently made this external to access the GPIO and the mcp3008 (or mcp3004) chip in the raspberry pi. They are standalone externals based on WiringPi (http://wiringpi.com/). Everything is in C so they should be reasonably fast.

To get the code, binaries and help files go to:
http://nyu-waverlylabs.org/rpi-gpio/

All best,

J