This project provides several sensor entities for a Technicolor CGA gateway in Home Assistant. It reads system and DHCP information, lists connected hosts, and offers a delta sensor to detect missing/inactive devices. Thanks to device_info, all entities are grouped under one device in Home Assistant's device and integrations registry.

• System status (e.g., CMStatus) including pass-through of additional system attributes
• DHCP sensors for all DHCP keys returned by the gateway
• Host list with the number of currently detected devices (hostTbl)
• Missing devices / Delta sensor: shows devices that disappeared or are inactive
• Clean device grouping via device_info (identifiers = (DOMAIN, host), manufacturer, name, configuration_url); model/firmware are added when available
• Automatic polling every 5 minutes

custom_components/TL-WPA8630P/
├─ __init__.py
├─ config_flow.py
├─ manifest.json
├─ const.py
├─ technicolor_cga.py
└─ sensor.py

1. Copy this folder to config/custom_components/technicolor_cga/.
2. Restart Home Assistant.
3. Go to Settings → Devices & Services → Add Integration and pick Technicolor CGA.
4. Enter your credentials:
   • Host (e.g., 192.168.0.1)
   • Username
   • Password

The integration uses Config Entries (UI-based setup).

• Name: Technicolor CGA System Status
• State: value of CMStatus (or "Unknown")
• Attributes: all other system fields (e.g., ModelName, SoftwareVersion, etc.).
• Device info: model/sw_version are set from system data when present.

• Name: Technicolor CGA DHCP <Key> (for each key returned by dhcp())
• State: corresponding value from DHCP data (or "Unknown").

• Name: Technicolor CGA Host List
• State: number of entries in hostTbl.
• Attributes: full host data structure (e.g., hostTbl, entries with physaddress, ipaddress, hostname, active).

• Name: Technicolor CGA Missing Devices
• State: number of detected missing or inactive devices.
• Attributes:
  • missing_devices: list of dicts {mac, last_ip, hostname, status}
  • known_devices: list of learned devices {mac, last_ip, hostname}
• Notes:
  • The known_devices list is learned at runtime (no persistence across restarts).
  • Sorting is numeric by IP; invalid IPs are placed at the end.

By default every 5 minutes (SCAN_INTERVAL = 300s).

• Verify Host, Username, Password and that the web interface is reachable.
• Some gateways return slightly different field names (ModelName vs. Model, SoftwareVersion vs. SWVersion/FirmwareVersion). The code handles common variants.
• The delta sensor only learns devices after they have been seen at least once.

• Entities inherit from SensorEntity (the base class provides device_info).
• Unique IDs are based on config_entry_id + entity name.
• Polling via async_track_time_interval.
• The API class TechnicolorCGA is called in the executor (login, system, dhcp, aDev).