Ryan Malloy
2e439364bd
custom_components/omni_pca/ — drop-in HA integration: - manifest.json (HA 2026.x, iot_class=local_push, requires omni-pca lib) - config_flow.py — host/port/controller_key with auth + reauth steps, parse_controller_key() extracted as pure testable function - coordinator.py — OmniDataUpdateCoordinator with long-lived OmniClient, unsolicited push wiring, ConfigEntryAuthFailed on bad key, reconnect on err - binary_sensor.py — one entity per named zone, zone_type -> device_class map (OPENING/MOTION/SMOKE/etc), is_on derived from ZoneProperties.status - const.py, strings.json, translations/en.json, README.md - hacs.json at root for HACS distribution tests: 97 pass + 2 skip (HA harness not installed; importorskip in test_ha_imports.py). 12 cases for parse_controller_key validation. Ruff clean across src/ tests/ custom_components/. Status of HA component itself NOT validated against a running HA — needs that next.
omni-pca
Async Python client for HAI/Leviton Omni-Link II home automation panels — Omni Pro II, Omni IIe, Omni LTe, Lumina.
Includes a Home Assistant custom component (custom_components/omni_pca/).
Status
Alpha. Built from a full reverse-engineering of HAI's PC Access 3.17 (the Windows installer/programmer app). The protocol layer captures two non-public quirks that public Omni-Link clients miss:
- Session key is not the ControllerKey. Last 5 bytes are XORed with a controller-supplied SessionID nonce.
- Per-block XOR pre-whitening before AES. First two bytes of every 16-byte block are XORed with the packet's sequence number.
See docs/PROTOCOL.md for the full byte-level spec.
Quick start (library)
uv add omni-pca
import asyncio
from omni_pca import OmniClient
async def main():
async with OmniClient(
host="192.168.1.9",
port=4369,
controller_key=bytes.fromhex("6ba7b4e9b4656de3cd7edd4c650cdb09"),
) as panel:
info = await panel.get_system_info()
print(info.model_name, info.firmware_version)
asyncio.run(main())
Quick start (Home Assistant)
Copy custom_components/omni_pca/ into your HA config/custom_components/, restart HA, then add the integration via Settings → Devices & Services. You'll need:
- Panel IP / hostname
- TCP port (default 4369)
- ControllerKey as 32 hex chars
Get the ControllerKey from your .pca file using the included parser:
uvx --from omni-pca omni-pca decode-pca path/to/Your.pca --field controller_key
Without a panel — mock controller
For testing, the library ships a minimal Omni controller emulator:
from omni_pca.mock_panel import MockPanel
async with MockPanel(controller_key=...).serve(port=14369):
# connect a real OmniClient to localhost:14369 — works end-to-end
...
Versioning
Date-based (CalVer): YYYY.M.D. Bumped on backwards-incompatible changes.
Acknowledgments
This client is independent and not affiliated with Leviton or HAI. Protocol details derived from clean-room analysis of the publicly-distributed PC Access installer.