BLOG - Christmas snowglobe - Simulating a button press on the raspberry pi

snowglobe_activator.py

import RPi.GPIO as GPIO
import urllib2
import simplejson
import time
import sys

GPIO.setmode(GPIO.BCM)
print "Setup Pin 10 to output"
GPIO.setup(10, GPIO.OUT)

def main ():
  while True:
    try:
      updateStatus()
    except KeyboardInterrupt:
      print "Bye!"
      sys.exit(0)
    except:
      print "Unexpected error:", sys.exc_info()[0]

def updateStatus():
  baseUrl = ""
  req = urllib2.Request(baseUrl + "/status")
  opener = urllib2.build_opener()
  f = opener.open(req)
  json = simplejson.load(f)

  if json["play"]:
    print "Playing a song!"
    simulateButton()
    time.sleep(10)
    simulateButton()

  #Nice little sleep between songs
  time.sleep(2)

def simulateButton ():
  GPIO.output(10, True)
  time.sleep(0.1)
  GPIO.output(10, False)

if __name__ == '__main__':
  main()