def on_message(mosq, obj, msg):
signal = msg.topic.split('/')[1]
value = msg.payload
print "MQTT received " + signal + ": " + str(value)
# Create the Hardwire Signal if it doesn't exist yet
if signal in signals:
pass
else:
signals[signal] = Signal(signal, value)
# Update signal value, converting to boolean if necessary
if value in ["True", "true", "T", "t"]:
signals[signal].value = True
elif value in ["False", "false", "F", "f"]:
signals[signal].value = False
else:
signals[signal].value = value
# Add Hardwire to the path to import. Only needed if not installed.
import sys, os
hardwire_dir = os.path.abspath(os.path.join(__file__, '..', '..', '..'))
sys.path.append(os.path.abspath(hardwire_dir))
from hardwire import Hardwire, Signal
import Adafruit_BBIO.GPIO as GPIO
# Create and initialize the Hardwire server.
server = Hardwire(port=8080, debug=True)
# Create Signal objects. Updating the value property of these objects will
# automatically update any bound values in the HTML document, and vice versa.
checkbox = Signal('checkbox', 0)
status = Signal('status', 0)
# Initialize GPIO pins
GPIO.setup("P8_10", GPIO.OUT)
GPIO.setup("P8_14", GPIO.IN)
# Register a signal handler for checkbox. Every time the checkbox is clicked,
# this function executes and sets the GPIO output value to the checkbox value.
@checkbox.on_change()
def set_ouput(name, value):
"""Handle changes to the value of output_pin."""
print "Setting P8_10 to " + str(value)
if value:
GPIO.output("P8_10", GPIO.HIGH)
else:
GPIO.output("P8_10", GPIO.LOW)
