MQTT emqx downlink

ChirpStack Application Server
1

Hi Guys me again,
Please help me I dont know waht happen with the downlink topic I ry to use this topic

application/[ApplicationID]/device/[DevEUI]/command/down`

but I don’t receive anithing
I Use emqx and the uplinks works perfect
Thanks

2

@juank

you need to send a downlink below format

{
    "confirmed": true,                        // whether the payload must be sent as confirmed data down or not
    "fPort": 10,                              // FPort to use (must be > 0)
    "data": "AA=="                            // base64 encoded data (plaintext, will be encrypted by ChirpStack Network Server)
    }
}

https://www.chirpstack.io/application-server/integrations/mqtt/

3

@sagarpatel,
Thanks for your reply I try with the example and I have an txack
image
but not the downlink I don’t know why?

4

Did you send it on the correct fPort for your device?