I recently got nano-X running on the gumstix, but now I need a way to
control the interface. I have a custom-made daughterboard with a
directional pad wired up to GPIO, but I'm not sure how to trigger
an event when a button is pushed. Can anyone give me some
pointers on accessing the GPIO information, or for example triggering a
program to run when a button is pushed? I eventually want to be
able to navigate thru a web-interface with this directional pad.