Class C - Sending Data from my Backend to my Sensor

[jawad_didouh]

Hi,

I’m using for the first time the “class c”, so i’m try to send data from my app backend to “lora app” and i want to ask you if these are the steps that must be done :

just publishing topic like this :

application/1/node/70b3d5fffe297207/tx {
“reference”: “actd1238888”,
“confirmed”: true,
“fPort”: 10,
“data”: "AAAA
}

i have to nothing to modify in the file lora-app-server.toml ? or there is somthing else to do in the app server ?

this is my publish python script exemple :

import paho.mqtt.client as paho
broker="127.0.0.1"
port=1883
def on_publish(client,userdata,result):             #create function for callback
print("data published \n")

client1= paho.Client("control1")                           #create client object
client1.on_publish = on_publish                          #assign function to callback
client1.connect(broker,port,60)                                 #establish connection
ret= client1.publish("application/5/SENSOR_AT_COM/3131353873378a18/tx","data:jaja")                   
client1.loop_forever()

[jawad_didouh]

I find how to send the downlink to my app server, but i cant see the “data” :

my publish topic mosquitto :

   mosquitto_pub -h localhost -t application/5/device/3131353873378a18/tx  -m '{"reference": 
   "actd1238888","confirmed": true,"fPort": 10,"data": "AQE=" }'

journalctl -f -n 100 -u lora-app-server :

in app_server interface :

i don’t know why i can’t see the parametre “data”

[Luis_Javier_Zaragosi]

Hello all, I do have the same problem. Somebody can give us an idea?

Thanks in advance guys!