How to publish sensor states at boot?

ESPHome
1

Hi,

Tried my first EspHome project with MQTT. Sensor states are published when they change (binary sensor), but nothing is published at boot.

How can I force the sensor states (all) to be published on start instead of waiting for a change ?

Appreciate your help !
Thx,
Deva

2

Would the update_entity service work from the backend?

3

That might work, but I want to make it work without HA too. It should work OK if HA is down …

4

It should work out of the box with api any reason not using it instead of mqtt

Using a lambda call you can force an update, you’ll have to trigger it somehow, like an automation when mqtt gets connected, unfortunately I don’t know much about mqtt to assist you more.

I would have expected it to do it automatically though.

5

You should be able to put something int he “on boot” of ESPHome config:

Something like below - but to get status, you would probably need to make a template… and you would have to do it for each sensor… :

esphome:
  # ...
  on_boot:
    priority: -10
    # ...
    then:
      - mqtt.publish:
          topic: !lambda |-
            if (id(reed_switch).state) return "topic1";
            else return "topic2";
          payload: !lambda |-
            return id(reed_switch).state ? "YES" : "NO";

Not very pretty… but I think that would work.
I’ll look and see if I can find anything cleaner…

DeadEnd