jnewc

// Reggie added, simple gpio keys polled driver, adds button support via gpio
// will be useful for embedded devices, see gpio-mouse, gpio-fan and rotary-encoder
// for other examples of gpio access to devices from the linux kernel
// this will use GPIO4,17,21,22 as a simple test, they will be set to active_low
// so should have a pullup added to each pin and button tied to ground.
// We have to use polled at the moment because the current kernel doesn't have
// code to handle an interrupt driven gpio-keys driver, which would've been much nicer
// you should check the wiki to make sure that these gpio are correctly configured
// and see whether they are physically pulled up on the schematic, if they're not
// add a 10k pullup to the gpio-keys pins and tie the button to gnd

jnewc

{
    init: function(elevators, floors) {

        var findElevator = function() {
            return _.find(elevators, function(e) { return e.loadFactor() < 0.5; });
        };
        
        var setupFloor = function(floor) {
            floor.on('up_button_pressed', function(floorNum) {
                console.log("UP: ", this.level);