Control Volumio2 with GPIO buttons

volumio-gpio-buttons.py

# https://volumio.org/forum/gpio-pins-control-volume-t2219.html
# https://pypi.python.org/pypi/socketIO-client
# https://volumio.github.io/docs/API/WebSocket_APIs.html

import RPi.GPIO as GPIO
import time
import subprocess
from socketIO_client import SocketIO, LoggingNamespace


GPIO.setmode(GPIO.BOARD)
socketIO = SocketIO('localhost', 3000)
status = 'pause'

def button_pressed(channel):
	if channel == 13:
		print 'next'
		socketIO.emit('next')
	elif channel == 15:
		print 'random'
		socketIO.emit('replaceAndPlay', {"uri":"live_playlists_random_50", "title":"50 random tracks", "service":"live_playlists"})
	elif channel == 11:
		print 'play/pause'
		print('state', status)
		if status == 'play':
			socketIO.emit('pause')
		else:
			socketIO.emit('play')
	else:
		print "unknown button", channel

def setup_channel(channel):
	try: 
		print "register %d" %channel
		GPIO.setup(channel, GPIO.IN, GPIO.PUD_UP)
		GPIO.add_event_detect(channel, GPIO.FALLING, callback = button_pressed, bouncetime = 400)
		print 'success'
	except (ValueError, RuntimeError) as e:
		print 'ERROR:', e

for x in [11, 13, 15]:
	setup_channel(x)

def on_push_state(*args):
		# print('state', args)
		global status
		status = args[0]['status'].encode('ascii', 'ignore')
		print status

socketIO.on('pushState', on_push_state)

# get initial state
socketIO.emit('getState', '', on_push_state)

try:
	socketIO.wait()
except KeyboardInterrupt:
	pass

GPIO.cleanup()