102 lines
2.6 KiB
Python
102 lines
2.6 KiB
Python
import time
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import board
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import adafruit_dht
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import psutil
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import random
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import RPi.GPIO as GPIO
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import time
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from paho.mqtt import client as mqtt_client
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name = 'test'
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broker = '192.168.0.196'
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port = 1883
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tempTopic = "home/office/climate/temp"
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humidTopic = "home/office/climate/humid"
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username = 'mqtt'
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password = 'falrenforbreakfast'
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client_id = f'python-mqtt-office-{random.randint(0, 1000)}'
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#We first check if a libgpiod process is running. If yes, we kill it!
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for proc in psutil.process_iter():
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if proc.name() == 'libgpiod_pulsein' or proc.name() == 'libgpiod_pulsei':
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proc.kill()
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#12 is the pin number
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pir_sensor = 12
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GPIO.setmode(GPIO.BOARD)
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GPIO.setup(pir_sensor, GPIO.IN)
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#Function Definitions
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def connect_mqtt():
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def on_connect(client, userdata, flags, rc):
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if rc == 0:
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print("Connected to MQTT Broker!")
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else:
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print("Failed to connect, return code %d\n", rc)
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client = mqtt_client.Client(client_id)
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client.username_pw_set(username, password)
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client.on_connect = on_connect
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client.connect(broker, port)
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return client
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def getValues(pir_sensor):
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current_state = 0
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try:
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while True:
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time.sleep(0.1)
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current_state = GPIO.input(pir_sensor)
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#Condition if motion is detected
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if current_state == 1:
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print("GPIO pin %s is %s" % (pir_sensor, current_state))
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time.sleep(5)
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except KeyboardInterrupt:
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pass
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finally:
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return current_state
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def publish(client, temp, humidity):
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#Publish Temp Results
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tempMsg = '{{ "temperature": "{}" }}'.format(temp)
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#tempMsg = temp
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result = client.publish(tempTopic, tempMsg)
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status = result[0]
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if status == 0:
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#print(f"Send `{tempMsg}` to topic `{tempTopic}`")
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pass
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else:
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print(f"Failed to send message to topic {tempTopic}")
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#Publish Humid Results
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humidMsg = '{{ "humidity": "{}" }}'.format(humidity)
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result = client.publish(humidTopic, humidMsg)
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status = result[0]
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if status == 0:
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#print(f"Send `{humidMsg}` to topic `{humidTopic}`")
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pass
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else:
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print(f"Failed to send message to topic {humidTopic}")
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while True:
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#Run functions
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client = connect_mqtt() # Connect to Broker
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client.loop_start() #Start loop
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current_value = getValues(pir_sensor)
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publish(client, current_value)
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client.loop_stop() #Stop loop
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client.disconnect() # Disconnect
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GPIO.cleanup()
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