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Mqtt.py
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Mqtt.py
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import paho.mqtt.client as mqtt
import json
import RPi.GPIO as io
io.setmode(io.BCM)
io.setup(17, io.IN, pull_up_down=io.PUD_UP)
io.setup(18, io.IN, pull_up_down=io.PUD_UP)
io.setup(27, io.IN, pull_up_down=io.PUD_UP)
io.add_event_detect(17, io.FALLING, bouncetime=200)
io.add_event_detect(18, io.FALLING, bouncetime=200)
io.add_event_detect(27, io.FALLING, bouncetime=200)
# tuplje object met pin nummers
leds = (9,10)
# initialisatie functie voor leds met als parameter een tuple
io.setmode(io.BCM)
io.setup(9, io.OUT)
io.setup(10, io.OUT)
#Booleans
led1 = False
led2 = False
led3 = False
# set state van de leds met als parameters 2 tuples
# tuple van pin nummers en een met bools van de state
def set_leds(leds, states):
io.output(leds, states)
# calback voor het verwerken van de berichten
def on_message(mqttc, obj, msg):
# try:
# payload omzetten van bytestring naar string
#
# json wordt verwacht json string moet omgezet worden naar een python
# dictonary voor verwerking
# x = json.loads(p)
if msg.payload.decode() == 'led1ON':
io.output(9,1)
elif msg.payload.decode() == 'led1OFF':
io.output(9,0)
if msg.payload.decode() == 'led2ON':
io.output(10,1)
elif msg.payload.decode() == 'led2OFF':
io.output(10,0)
if msg.payload.decode() == 'ledsOFF':
io.output(9,0)
io.output(10,0)
if msg.payload.decode() == 'ledsON':
io.output(9,1)
io.output(10,1)
print(msg.topic)
print(msg.payload.decode())
#def manual():
# global led1
# global led2
# global led3
# try:
# mqttc = mqtt.Client()
# mqttc.connect("broker.hivemq.com")
# mqttc.connect("127.0.0.1")
# while True:
# if io.event_detected(17):
# if led1 == False:
# mqttc.publish('home/groundfloor/kitchen/lights/light1', payload='led1OFF', qos=0, retain=False)
# led1 = True
# print(led1)
# elif led1 == True:
# mqttc.publish('home/groundfloor/kitchen/lights/light1', payload='led1ON', qos=0, retain=False)
# led1 = False
# if io.event_detected(18):
# if led2 == False:
# mqttc.publish('home/groundfloor/kitchen/lights/light2', payload='led2OFF', qos=0, retain=False)
# led2 = True
# elif led2 == True:
# mqttc.publish('home/groundfloor/kitchen/lights/light2', payload='led2ON', qos=0, retain=False)
# led2 = False
# if io.event_detected(27):
# if led3 == False:
# mqttc.publish('home/groundfloor/kitchen', payload='ledsOFF', qos=0, retain=False)
# led3 = True
# elif led3 == True:
# mqttc.publish('home/groundfloor/kitchen', payload='ledsON', qos=0, retain=False)
# led3 = False
# except KeyboardInterrupt:
# pass
def main():
global led1
global led2
global led3
try:
# initialisatie van alle elementen
# init_leds(leds)
mqttc = mqtt.Client()
# mqttc.subscribe('home/groundfloor/kitchen/lights/light1')
# mqttc.subscribe('home/groundfloor/kitchen/lights/light2')
mqttc.on_message = on_message
# mqttc.connect("127.0.0.1")
mqttc.connect("broker.hivemq.com")
mqttc.subscribe('home/groundfloor/kitchen/#')
# mqttc.subscribe('home/groundfloor/kitchen/lights/light2')
while True:
if io.event_detected(17):
if led1 == False:
mqttc.publish('home/groundfloor/livingroom', payload='led1OFF', qos=0, retain=False)
led1 = True
elif led1 == True:
mqttc.publish('home/groundfloor/livingroom', payload='led1ON', qos=0, retain=False)
led1 = False
if io.event_detected(18):
if led2 == False:
mqttc.publish('home/groundfloor/livingroom', payload='led2OFF', qos=0, retain=False)
led2 = True
elif led2 == True:
mqttc.publish('home/groundfloor/livingroom', payload='led2ON', qos=0, retain=False)
led2 = False
if io.event_detected(27):
if led3 == False:
mqttc.publish('home/groundfloor/livingroom', payload='ledsOFF', qos=0, retain=False)
led3 = True
elif led3 == True:
mqttc.publish('home/groundfloor/livingroom', payload='ledsON', qos=0, retain=False)
led3 = False
mqttc.loop()
except KeyboardInterrupt:
pass
finally:
io.cleanup()
# main segment
if __name__ == "__main__":
main()