[V4.0] Add support for fields without units.

[pizang]

I had a working esp32 that was reading my central heat ing cost dividers through wmbus.After upgrading both ESP32Home and wmbus it still reads data but I have following errors in the log:

[14:59:40][W][wmbus:144]: Fields without unit not supported yet! [14:59:40][W][wmbus:154]: Can't get requested field 'temp_room_avg_c' with unit '°C'

Sensor definition:

sensor:

• platform: wmbus meter_id: 0x123456789 type: apatoreitn sensors:
  • name: "Kuchnia Current heat" field: "current_hca" unit_of_measurement: ""
  • name: "Kuchnia Prevous year heat" field: "previous_hca" unit_of_measurement: ""
  • name: "Kuchnia Room avg temp" field: "temp_room_avg_c" unit_of_measurement: "°C"
  • name: "Kuchnia Previous Room avg temp" field: "temp_room_prev_avg_c" unit_of_measurement: "°C"

HCA is a value without an unit - it is kind of "tick" counter. I also tried None in the unit field. Celsius degrees also do not work.

Propably I have an error in the config but cannot figure it out.

[SzczepanLeon]

Fields without units are not supported yet. For celsius please read manual and split field name.