cientid='d:xlv9uq:Raspberry-Pi3:RaspberryPiDevice1'
username='use-token-auth'
password='thisisatokenforthecreateddevice'
topic='iot-2/evt/temperature/fmt/json'

# Sensor parameters
dht_sensor_port = 7

client = mqtt.Client(clientid)
client.username_pw_set(username, password)
client.connect(host, 1883, 60)

while True:
	try:
		[ t,h ]=grovepi.dht(dht_sensor_port,0)
		client.publish(topic, json.dumps({'t':t, 'h':h}))
		print "Message published"
		print(str(t) + "\t" + str(h));
		time.sleep(.5)
	except IOError:
		print ("Error")

client.loop()
client.disconnect()