> How to get access to RPi 2 GPIO ? bind -a '#G' /dev
Reading from /dev/gpio gives a 16-character big-endian hex string with current values of gpios 63-0. Writing commands like 'function 17 out' and 'set 17 1' to /dev/gpio will change functions and outputs. Sorry there doesn't seem to be a man page, see the source for details (/sys/src/9/bcm/devgpio.c)
