TTN Example App

ttn_client_app.py

import paho.mqtt.client as mqtt
import base64
import json

server = "eu.thethings.network"
up_topic = '+/devices/+/up'
user = "my_user" #Application ID
password = "ttn-account-v2.verycrazystring" #Application Access Key

def on_message(mqttc, obj, msg):
	m = str(msg.payload,'utf-8')
	m = json.loads(m)
	import pprint
	pprint.pprint(m)

	message =base64.b64decode(m['payload_raw'])
	temp = int.from_bytes(message,byteorder='little')/100
	print("Temperature = {}".format(temp))

mqttc = mqtt.Client()
mqttc.username_pw_set(user,password)
mqttc.on_message = on_message
mqttc.connect(server, 1883, 60)
mqttc.subscribe(up_topic, 0)

mqttc.loop_forever()