83 lines
2.2 KiB
Python
83 lines
2.2 KiB
Python
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import mosquitto
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import os
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import urlparse
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# External module imports
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import RPi.GPIO as GPIO
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import time
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led = 12
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MQTT_SERVER = "x.x.x.xxx"
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MQTT_SERVER_PORT = xxx
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MQTT_TOPIC = "/home/tv/backlight"
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MQTT_USERNAME = "mosquitto"
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MQTT_PASSWORD = "xxx"
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# Pin Setup:
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GPIO.setmode(GPIO.BOARD)
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GPIO.setwarnings(False)
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GPIO.setup(led, GPIO.OUT)
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# Define event callbacks
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def on_connect(mosq, obj, rc):
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print("Return Code On Connect: " + str(rc))
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def on_message(mosq, obj, msg):
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print(msg.topic + " " + str(msg.qos) + " " + str(msg.payload))
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if (str(msg.payload) == "on" or str(msg.payload) == "ON"):
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#os.system('python on.py')
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GPIO.output(led, GPIO.LOW)
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time.sleep(1)
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else:
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if (str(msg.payload) == "off" or str(msg.payload) == "OFF"):
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#os.system('python off.py')
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GPIO.output(led, GPIO.HIGH)
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time.sleep(1)
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else:
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if (str(msg.payload) == "FLICKER_TV_OFF"):
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for x in range(0, 3):
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GPIO.output(led, GPIO.HIGH)
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time.sleep(0.25)
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GPIO.output(led, GPIO.LOW)
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time.sleep(0.25)
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else:
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if (str(msg.payload) == "FLICKER"):
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for x in range(0, 3):
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GPIO.output(led, GPIO.LOW)
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time.sleep(0.25)
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GPIO.output(led, GPIO.HIGH)
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time.sleep(0.25)
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time.sleep(1.00)
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else:
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print("Unknown command")
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def on_subscribe(mosq, obj, mid, granted_qos):
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print("Subscribed: " + str(mid) + " " + str(granted_qos))
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def on_log(mosq, obj, level, string):
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print(string)
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mqttc = mosquitto.Mosquitto()
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# Assign event callbacks
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mqttc.on_message = on_message
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mqttc.on_connect = on_connect
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mqttc.on_subscribe = on_subscribe
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# Uncomment to enable debug messages
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#mqttc.on_log = on_log
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# Connect
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mqttc.username_pw_set(MQTT_USERNAME, MQTT_PASSWORD)
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mqttc.connect(MQTT_SERVER, MQTT_SERVER_PORT)
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# Start subscribe, with QoS level 0
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mqttc.subscribe(MQTT_TOPIC, 0)
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# Continue the network loop, exit when an error occurs
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rc = 0
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while rc == 0:
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rc = mqttc.loop()
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print("MQTT Return Code: " + str(rc))
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