Initial support for LG GBBS322CEV refrigerator

[Skarabaen]

Summary

Adds initial support for the LG GBBS322CEV refrigerator.

The appliance identifies itself as:

model_id: 2REBGLUB_2P__
device_type: 101
protocol: ThinQ2

Closes #140.

Supported features

The following features were tested with a real appliance and are exposed through Home Assistant MQTT discovery:

• Fridge temperature setpoint
• Freezer temperature setpoint
• Combined door state
• Express Cool
• Express Freeze
• Drawer mode:
  • Cheese
  • Fish
  • Meat
• Raw drawer mode value for validation and debugging

Protocol details

The implementation is based on the existing 2RES1VE61NFA2 refrigerator decoder, but this appliance uses a 96-byte status block.

Observed packet formats:

AA 0x66 10 EB <96-byte status> <checksum> BB
AA 0xC6 10 EC <96-byte previous status> <96-byte current status> <checksum> BB

The existing status query also works with this model:

AA0EF0ED1211010000010400EBBB

Confirmed field mapping

fridge_setpoint:
  status_offset: 1
  formula: 8 - raw

freezer_setpoint:
  status_offset: 2
  formula: -14 - raw

express_freeze:
  status_offset: 3
  values:
    1: off
    2: on

door:
  status_offset: 7
  values:
    1: open
    2: closed

temperature_unit:
  status_offset: 8
  values:
    1: Celsius

express_cool:
  status_offset: 16
  values:
    0: off
    1: on

drawer_mode:
  status_offset: 95
  values:
    0: Cheese
    1: Fish
    2: Meat

The door field appears to be a combined state. Both the fridge door and freezer door produce the same open and closed values.

Testing

The implementation was tested using a locally built Docker image with a real LG GBBS322CEV appliance.

Confirmed in Home Assistant:

fridge_setpoint: working
freezer_setpoint: working
door: working
express_cool: working
express_freeze: working
drawer_mode: working
drawer_mode_raw: working

Automated tests use real packet captures and cover:

• Full 0x10EB status decoding
• Current-state extraction from 0x10EC delta packets
• Fridge and freezer setpoints
• Open and closed door states
• Express Cool
• Express Freeze
• Cheese, Fish, and Meat drawer modes
• Status query generation
• Home Assistant setting packet generation
• Invalid and unsupported packet handling

Full test suite result:

tests: 426
passed: 426
failed: 0

Files added or modified

cloud/devices/2REBGLUB_2P__.ts
cloud/ha_bridge.ts
tests/cloud/devices/2REBGLUB_2P__.test.ts

Notes

The implementation should be considered preliminary because additional appliance fields may still be unidentified.

The currently exposed features were verified against the real appliance and Home Assistant.