MQTT command down event not happening

[Jorge1]

Hi, been trying to send commands to a device, but nothing has happened so far.

The device does send the event “up”, but now that I want to send a command to it, I can’t make it work.

First, I try to send a command with the WebUI, but nothing happens(even using mosquitto_sub to “see” the command), then I try to use mosquitto_pub to send a command, and it does enqueue a command on the webUI, but still nothing.

I make sure that the command is correct, but I am not sure if this is a ChirpStack problem.

Any suggestions would be appreciated.

[MMO]

Hello,
Did you encode your payload in base64 ?
If yes, can you provide an example before and after encoding (with a few screenshots if possible please) ?

[Jorge1]

Yes, I have tried both hex and base64.

Here are the screenshots, the terminal shows the events (up and down) of the devices while I tried to send commands via the webUI:

mosquitto_sub -t “application/3d8cb2da-a6f2-4644-ae54-4d9b67f114b2/device/ac1f09fffe171b1f/#” -v

terminal output:

WebUI while I tried to send the same command (D10100D20100) in hex(first) and base64(last):

As you can see, there is only the up event. I’m lost on this one, any help is appreciated.

if any more information is needed, please ask.

[ccall48]

Do you have a link to the documentation you’re using to structure a downlink?