mqtt - best way to subscribe to several topics?

[dubaleeiro]

Hello @loboris ,

first of all thanks a lot for the great repository ! This is actually more like a question than a issue.

My current approach to subscribe to the following mqtt topics is just using the mqtt.subscribe method one after the other, with a 3 sec delay between then. '/plant/temp' '/plant/humi' '/plant/status'

I have noticed that if I symply subscribe to the topic '/plant/', the websockets monitor at cloud.mqtt.com website display the messages, but this is not the case with the callback data_cb, which only displays if the topic is exactly '/plant/'. Is there any way to change that?

Thanks ! Eduardo

[curiouswala]

Hi @dubaleeiro, I think you should be able to do this using 'plant/#' I have tested it on the unix port of micropython with umqtt.simple.

[dubaleeiro]

Hello @infogeek , Thanks for the great tip. It worked! However, when the subscription using 'plant/#' is confirmed, I get the retained message of only 1 out of 3 topics I have previously published and retained into the mqtt server. Would you have any hints on that as well? Thanks!