46 lines
1.5 KiB
Python
Executable File
46 lines
1.5 KiB
Python
Executable File
#!/usr/bin/python3
|
|
# Copyright (c) 2014 Adafruit Industries
|
|
# Author: Tony DiCola
|
|
|
|
import sys
|
|
import Adafruit_DHT
|
|
import paho.mqtt.client as mqtt
|
|
|
|
mqttserver = "192.168.0.114"
|
|
client = mqtt.Client("koksfonstret")
|
|
client.connect(mqttserver)
|
|
|
|
# Parse command line parameters.
|
|
sensor_args = { '11': Adafruit_DHT.DHT11,
|
|
'22': Adafruit_DHT.DHT22,
|
|
'2302': Adafruit_DHT.AM2302 }
|
|
if len(sys.argv) == 3 and sys.argv[1] in sensor_args:
|
|
sensor = sensor_args[sys.argv[1]]
|
|
pin = sys.argv[2]
|
|
else:
|
|
print('Usage: sudo ./Adafruit_DHT.py [11|22|2302] <GPIO pin number>')
|
|
print('Example: sudo ./Adafruit_DHT.py 2302 4 - Read from an AM2302 connected to GPIO pin #4')
|
|
sys.exit(1)
|
|
|
|
|
|
# Try to grab a sensor reading. Use the read_retry method which will retry up
|
|
# to 15 times to get a sensor reading (waiting 2 seconds between each retry).
|
|
humidity, temperature = Adafruit_DHT.read_retry(sensor, pin)
|
|
|
|
# Un-comment the line below to convert the temperature to Fahrenheit.
|
|
# temperature = temperature * 9/5.0 + 32
|
|
|
|
# Note that sometimes you won't get a reading and
|
|
# the results will be null (because Linux can't
|
|
# guarantee the timing of calls to read the sensor).
|
|
# If this happens try again!
|
|
|
|
if humidity is not None and temperature is not None:
|
|
print('Temp={0:0.1f}* Humidity={1:0.1f}%'.format(temperature, humidity))
|
|
client.publish("casablanca/koksfonstret/temperature", temperature)
|
|
client.publish("casablanca/koksfonstret/humidity", humidity)
|
|
|
|
else:
|
|
print('Failed to get reading. Try again!')
|
|
sys.exit(1)
|