Homie-OTA

[davidgraeff]

I'd like to have a second repository soon for a separate homie-ota specification.
It will evolve in parallel to this homie-core convention and would require Homie 3.x for defining the topology.

If anybody is interested in defining required topics, please go on.

[boc-tothefuture]

Does it require 3.x or 4.x and the implementation going on in #132 which is tagged for 4.0?

[davidgraeff]

3.x, but compatible to 4.x. The way how properties are defined hasn't changed.

[Thalhammer]

Are we going to support multiple ways of OTA Update or do we specify one that every device must support?
There are a lot of ways to implement OTA.

• Upload over MQTT
• Publish URL and devices download the firmware from a server
• Some obscure vendor defined protocol

While upload via MQTT is fine for simple devices, if you have thousands of them you might want to use a CDN for firmware, which makes url publish a better option.

[davidgraeff]

homie supports broadcast. I'd say the OTA specification negotiates a broadcast channel with every interested device and publishes the update via the broadcast channel.

The following methods would be awesome:

• HTTP pull
• MQTT push

[ogghst]

hello, any update on this topic? i'm developing and ESP32 generic firmware using homie and a standard OTA approach through MQTT would help. somethig like this