var trigger = require('@amperka/button') 
  .connect(P2);
  
var buzzer = require('@amperka/buzzer') 
  .connect(P5)
  .frequency(50);
  
var light = require('@amperka/led') 
  .connect(P1);
  
var barrier = require('@amperka/servo') 
  .connect(P13)
  .write(90);
  
var closed = false;

trigger.on('press', function() { 
  closed = !closed;
  if (closed) {
    buzzer.beep(1, 0.5); 
    light.blink(1, 0.5); 
    barrier.write(0);
  } else { 
    buzzer.turnOff(); 
    light.turnOff(); 
    barrier.write(90);
  } 
});