Squeezebox Server with Squeezeslave to turn on speakers when playing

[TheD6Bel]

Wha??

Have you tried "gpio raspberry pi python" on google ?

On google! I searched on the forum, on RPi forum i open un post and i have a python script for manage GPIO but is only with MPD not LMS. I try change this script for LMS

http://www.raspberrypi.org/phpBB3/vi...eda87&start=25

If MPD playing music, GPIO is opens, if in pause/stop GPIO closes.

#!/usr/bin/env python
# -*- coding: utf-8 -*-
from mpd import MPDClient
import RPi.GPIO as GPIO
import time

RELAIS_ACTIF=False
PIN_RELAIS=12

def relai(etat):
GPIO.output(PIN_RELAIS, etat) # Bascule le pin du relai à l'état voulu
RELAIS_ACTIF=etat

def main():
# Test de lecture audio
client = MPDClient()
while(1):
try:
# Connection au client mpd et lecture du status
client.connect(host='localhost', port='6600')
client.password('password')
status=client.status()

if status['state']=='play' and RELAIS_ACTIF is False:
relai(True)
elif status['state']=='stop' or status['state']=='pause':
relai(False)
client.disconnect()
except:
print 'Erreur connection'
raise
time.sleep(1) # On fait dodo pendant une seconde, et on recommence !

if __name__ == "__main__":
GPIO.setup(PIN_RELAIS, GPIO.OUT) # paramétrage du pin en sortie
relai(False)
main()

[epoch1970]

did you see this one : http://forums.slimdevices.com/showth...l=1#post636134

[TheD6Bel]

did you see this one : http://forums.slimdevices.com/showth...l=1#post636134

i see, but isn't for manage GPIO, is for have inforamtions over serveurs/player

but thanks

[RobbeD]

Hello,

Sorry for bumping this thread, but for people who are still searching for an easy script to trigger a relay i've created a python script that runs at boot.
The script checks the powerstate of the player every second (script runs on a raspberry pi where squeezelite is installed), and if powerstate = 1 then relay is turned on, otherwise the relay is turned off.
It works perfectly. The only thing you need to enter is the mac-adress of your player and the adress of your server (ip adress or url).

For the start up process i let the script wait 5 minutes before it gets executed, because if the player and the server are on the same machine, and the machine is rebooted, it takes a while to start lms.

If there are things that can be changed in order to make the script better (I'm sure that will be easy, this was my first python script) , feel free to do so and post your changes please! :-)

import sys
import httplib
import RPi.GPIO as GPIO
import time

time.sleep (300)

if float(sys.version[:3]) >= 2.6:
    import json
else:
    # python 2.4 or 2.5 can also import simplejson
    # as working alternative to the json included.
    import simplejson as json

# change to your server

server = "yourserverip"
playermac = "your player mac adresse"

# This provides http 1.1 keep alive so preventing DNS lookup 
# For each request.

while True: 

	conn = httplib.HTTPConnection(server)

	#Make a python dictionary for the request.

	data = {
    	"id": 1, 
	    "method": "slim.request", 
	    "params": [
        	"", 
	        [
        	    "player", 
	            "count", 
        	    "?"
	        ]
	    ]
	}

	# So now we convert the dictionary data to a string
	params = json.dumps(data, sort_keys=True, indent=4)
	# Make the keep alive request
	conn.request("POST", "/jsonrpc.js", params)
	httpResponse = conn.getresponse()
	#print "httpResponse.status=%s, httpResponse.reason=%s" % (httpResponse.status, httpResponse.reason)
	data = httpResponse.read()
	# Load the JSON string back to python dictionary
	responce = json.loads(data)
	# print the python dictionary as a JSON string.
	# print json.dumps(responce, sort_keys=True, indent=4)
	# Extract the number of players from the python dictionary
	numberplayers = responce['result']["_count"]
	# print "numberplayers=%s" % numberplayers

	playerIdentifiers = []
	playerdetected = ""
	for i in range(numberplayers):
	    data = { "id":1,
	                "method":"slim.request",
	                "params":[ "", 
					["player","id",i,"?"]
	                  ]
	            }
	    params = json.dumps(data, sort_keys=True, indent=4)
	#    print params
	    conn.request("POST", "/jsonrpc.js", params)
	    httpResponse = conn.getresponse()
	#   print "httpResponse.status=%s, httpResponse.reason=%s" % (httpResponse.status, httpResponse.reason)
	    data = httpResponse.read()
	#    print data
	    responce = json.loads(data)
	    playerId = responce['result']["_id"]
	#    print playerId
	#    print "id=%s" % playerId
	#    print playermac
	
	    if (playerId == playermac):
		playerdetected = playerId
	
	if playerdetected <> "":
	#	print playerdetected
		data = { "id":1,
	                "method":"slim.request",
	                "params":[playerdetected,
					["power","?"]
				]               
			}
		params = json.dumps(data, sort_keys=True, indent=4)
	 #       print params
	        conn.request("POST", "/jsonrpc.js", params)
	        httpResponse = conn.getresponse()
	 #       print "httpResponse.status=%s, httpResponse.reason=%s" % (httpResponse.status, httpResponse.reason)
	        data = httpResponse.read()
	 #       print data
	        responce = json.loads(data)
	        powerstate = responce['result']["_power"]
		if powerstate ==  "1":
#			print "player: " + playerdetected + " power state: " + powerstate
			GPIO.setmode(GPIO.BCM)
			GPIO.setwarnings(False)
			GPIO.setup(18, GPIO.OUT)
			GPIO.output(18, True)
		else:
			powerstate = "0"
#			print "player: " + playerdetected + " power state: " + powerstate
			GPIO.setmode(GPIO.BCM)
			GPIO.setwarnings(False)
			GPIO.setup(18, GPIO.OUT)
			GPIO.output(18, False)
	time.sleep (1)

[TheD6Bel]

Thanks, i test now

[RobbeD]

Ok! :-) Let me know if it works or not..

[TheD6Bel]

i tried but don't work

i put the script in /hom/gpio.sh with chmod 777

i put before yout script

#!/usr/bin/env python
# -*- coding: utf-8 -*-

i put ip of RPi : 192.168.1.9
and mac adress of squeezeslave (in web interface, setting, player, ) : b8:27:eb:e4:2a:af

I edit /etc/rc.local

and put before exit0
/home/gpio.sh &

I plugged my relay
vcc in pin 2 of RPi (5V)
ground in pin 6 of RPi (ground)
ctrl in pin 12 of RPi (gpio18)

i reboot but don't work, what I did wrong?

thanks

EDIT I tested withe a tester and pin 12 (gpio18) out continuous 3.3V with LMS on or off

[TheD6Bel]

if i execute gpio.sh i have error:

root@squeezeplug:/home# ./gpio.sh
Traceback (most recent call last):
File "./gpio.sh", line 52, in <module>
responce = json.loads(data)
File "/usr/lib/python2.7/json/__init__.py", line 326, in loads
return _default_decoder.decode(s)
File "/usr/lib/python2.7/json/decoder.py", line 365, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/usr/lib/python2.7/json/decoder.py", line 383, in raw_decode
raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded

[RobbeD]

Hi, I'll tell you what I did to make it work:

I saved the script as relay.py and ran it just with "python relay.py" (as root).
Later I made a service script in etc\init.d to run it at boot..

Maybe you should try to add :9000 behind the ip adress of your server? Maybe that can be the problem.

My relay is connected as follows: VCC pin 2, GND pin 6, CTRL pin 12..

[TheD6Bel]

i resolve my first problem

i change

#!/usr/bin/env python
to
#!/usr/bin/env python3

but i have a error in line 82 :

root@squeezeplug:/home# ./gpio.sh
File "./gpio.sh", line 82
playerdetected = playerId
^
TabError: inconsistent use of tabs and spaces in indentation