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! :-)
Code:
--------------------
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)
--------------------
------------------------------------------------------------------------
RobbeD's Profile: http://forums.slimdevices.com/member.php?userid=56967
View this thread: http://forums.slimdevices.com/showthread.php?t=71077
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