66 lines
1.8 KiB
Python
66 lines
1.8 KiB
Python
# node.py
|
|
# Simple Python client to show node activity from ttn MQTT brooker with credentials
|
|
# Author: R.Schimmel
|
|
# www.schimmel-bisolutions.nl
|
|
# first install paho.mqtt.client: pip install paho-mqtt
|
|
#
|
|
# Enhanced for lorawan in Digital Glarus by Nico Schottelius (nico.schottelius -at- ungleich.ch)
|
|
#
|
|
|
|
import paho.mqtt.client as mqtt
|
|
import psycopg2
|
|
import json
|
|
import base64
|
|
import os
|
|
import logging
|
|
|
|
import lorautil
|
|
|
|
log = logging.getLogger("ttn")
|
|
log.setLevel(logging.DEBUG)
|
|
|
|
#Call back functions
|
|
|
|
# gives connection message
|
|
def on_connect(client,userdata,rc):
|
|
print("Connected with result code:"+str(rc))
|
|
# subscribe for all devices of user
|
|
client.subscribe('+/devices/+/up')
|
|
|
|
# gives message from device
|
|
def on_message(client,userdata,msg):
|
|
myjson = msg.payload.decode('utf-8')
|
|
mydict = json.loads(myjson)
|
|
deveui = mydict['dev_eui']
|
|
payload = base64.b64decode(mydict['payload']).decode('utf-8')
|
|
|
|
log.info("Message received: {}: {}".format(deveui, payload))
|
|
lorautil.db_insert_json("ttn", myjson, payload, deveui)
|
|
lorautil.db_notify("ttn", payload, deveui)
|
|
|
|
def on_log(client,userdata,level,buf):
|
|
log.debug("message:" + msg)
|
|
log.debug("userdata:" + str(userdata))
|
|
|
|
def on_disconnect(client, userdata, rc):
|
|
log.debug("reconnecting...")
|
|
client.reconnect()
|
|
|
|
if __name__ == '__main__':
|
|
mqttc= mqtt.Client()
|
|
mqttc.on_connect=on_connect
|
|
mqttc.on_message=on_message
|
|
mqttc.on_disconnect=on_disconnect
|
|
|
|
print("Connecting to ttn")
|
|
username=os.environ['ttn_user']
|
|
password=os.environ['ttn_password']
|
|
|
|
mqttc.username_pw_set(username, password)
|
|
mqttc.connect("staging.thethingsnetwork.org",1883,10)
|
|
|
|
# and listen to server
|
|
print("Listening via mqtt")
|
|
run = True
|
|
while run:
|
|
mqttc.loop()
|