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homieiot / homie-esp8266

💡 ESP8266 framework for Homie, a lightweight MQTT convention for the IoT
http://homieiot.github.io/homie-esp8266
MIT License
1.36k stars 307 forks source link

force resending states #34

Closed CWempe closed 8 years ago

CWempe commented 8 years ago

When you change your configuration or restart http://www.openhab.org/ the current states of your device might get lost (Yes, you can prevent this).

But it would be nice to send a mqtt message to let the device resend the initial messages.

devices/15b638e0/$*

An alternative workaround would be to reset the device remotely (https://github.com/marvinroger/homie-esp8266/issues/33)

CWempe commented 8 years ago

I think a feature to resending specific values like temperature (rather than wait for the next TEMPERATURE_INTERVAL) need to be implemented by the user.

marvinroger commented 8 years ago

This is already handled by MQTT, and the initial messages are sent with the retain flag set to true, which means that when a new client connect it receives all the latest values sent by the device.

CWempe commented 8 years ago

This would not help in my case, since openhab can lose the values while still keep up the connection to the mqtt broaker.

But like I said, this is not an issue when openhab ist configured correctly. And I dont want you to break the mqtt standards. :)

marvinroger commented 8 years ago

I am not in favor of that, I don't want to workaround a bad behavior of a 3rd party software. openHAB should fix the issue on its side, don't you think? And as you said, this is not an issue if it's configured correctly. ;)