var lightSensor = require('@amperka/light-sensor') 
  .connect(A2);
  
var thermometer = require('@amperka/thermometer') 
  .connect(A4);
  
var button = require('@amperka/button') 
  .connect(P3);
  
var kb = require('@amperka/usb-keyboard'); 

var timer = require('@amperka/timer')
  .create(5);
  
button.on('press', function() { 
  if (timer.isRunning()) {
    timer.stop(); 
  } else {
    timer.tick().run(); }
});

timer.on('tick', function() {
  var time = getTime();
  var lx = lightSensor.read('lx'); 
  var c = thermometer.read('C');

  kb.type(time.toFixed(0) + '\t' + 
          lx.toFixed(0) + '\t' +
          c.toFixed(0) + '\n');
});