How can I send application data to devices?

ChirpStack Application Server
1

Hi there.

https://docs.loraserver.io/lora-app-server/integrate/data/

I had read this documents carefully, but I still don’t know how can I send some data from gateway to nodes. is there any UI in lora-app-server’s websit? Or use some command?

2

It is well documented

You have to publish to MQTT to this topic:

application/[applicationID]/node/[devEUI]/tx

With the format in the documentation

3

@fma @brocaar

i have tried the same,then i am getting this error.Can you please tell me what i am doing wrong here?

ver system=grpc
INFO[12630] backend/gateway: rx packet received
ERRO[12630] processing rx packet error: get device-session error: device-session does not exist or invalid fcnt or mic  data_base64="gOMaASaAFQAFrN5714ZnEm4="

this is the way i am sending data from terminal
mosquitto_pub -t “application/1/node/9c65f9ffXXXXX/tx” -m “{“reference”:“abcd1234”,“confirmed”:true,“fPort”:10,“data”:“MTIzNDU2Nzg=”}”