Assign names to sensors

[Misiu]

Hi,
currently, when You have multiple DS18B20 sensors, the temperature is sent to MQTT as described in this issue
like this:

ESPURNA_343624/temperature/28FF732970160440 => 17.0

or like this:

ESPURNA_343624/temperature/0 => 17.0
ESPURNA_343624/temperature/0/address => 28FF732970160440

or like this:

ESPURNA_343624\data => {'temperature/0': 17.0, 'temperature/0/address': '28FF732970160440', ...}

It would be better if it would be possible to name each sensor via Web UI so the message send to MQTT could look like this:

ESPURNA_343624/temperature/kitchen_floor => 17.0

This option would allow easy configuration of additional sensors.
Imagine You try to add 5 DS18B20 sensors.
Currently when You plug all of them You must check each ony by hand and modify code in OpenHab to assign address with variable.

With ability to assign name to each sensor You could connect single sensor, assign name to it via WebUI, connect second one, rescan sensors via WebUI and You will notice which one in old sensor (has name assigned) and which is new (no name).

Sensor address	Friendly name	Assign
28 FF 73 29 70 16 04 40	kitchen_floor	Assign
28 FF 73 2B 45 4C 00 10	kitchen_outside_window	Assign
28 FF 2D 25 2B 2D 12 BB		Assign

This way code in places that use MQTT messages would be easier to write, because You would be able to use friendly name instead of addresses.

Another big adventage of this solution would be the ability to simple replace broken sensor.
You uplug old one, plug new one and in WebUI You assigne name that old one used. Signe change in ESPurna and no changes in other places.

[Gaff]

This also applies to switches. I can name the host but I don't necessarily want to call my switches heating_0 and heating_1!

For users of home assistant MQTT discovery there's a relatively simple solution - instead of setting the name to be the hostname, we could make it configurable via the GUI. Then the discovery message would contain a nice name for each switch / sensor, but the MQTT topics could remain exactly as they are.

[excalq]

Very much looking forward to this for my Sonoff 4ch-pro powered irrigation control!