V2 phase1 architecture

[GreenGrassBlueOcean]

Summary of Changes in v2 Phase 1 Architecture

This PR delivers the complete Phase 1 Architecture Modernization for the OpenWebNet MyHOME integration, providing rock-solid stability, full Home Assistant Core 2025/2026 compatibility, support for modern and legacy gateways, USB/Serial transport for Legrand 3578, an in-band real-time Lovelace bus monitor card, full feature parity (dry contacts, virtual cover positioning, burglar alarm, fancoil climate), and 100% automated test coverage across all components.

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Key Architectural Pillars & Feature Parity

1. Dual Asynchronous Transports (TCP & Serial/USB):

   • Native AsyncTcpTransport and AsyncSerialTransport (pyserial-asyncio) sharing a unified stream interface.
   • Native support for Legrand 3578 OpenZigBee USB interfaces (issue [Feature Request]: Support USB-based OpenZigBee gateway (Legrand 3578 / Serial Transport) #233) with custom baudrate selection and automatic port discovery.

2. Declarative Gateway Profiles & Adaptive Pacing:

   • Distinct profiles for MH200 / MH201 / MH202, F454 / F455, MyHomeServer1, and 3578.
   • Token-bucket rate limiter with 50 ms inter-frame pacing, preventing gateway buffer overruns and dropped telegrams.
   • Strict gateway session concurrency bounding (single-session serialization for legacy scenario programmers).

3. Stream Framing & Sentinel Watchdog:

   • Delimiter-based readuntil(b"##") framing, eliminating malformed chunk parsing and race conditions.
   • Active keep-alive sentinel probes and watchdog supervisor with automatic backoff reconnection.
   • Fail-closed authentication engine supporting HMAC-SHA256, HMAC-SHA1, and OpenWebNet numeric hashing with constant-time hmac.compare_digest.

4. Home Assistant Core 2025/2026 Compatibility & Resiliency:

   • Probatio Schema Fix: Resolved nested dictionary schema validation bugs on modern HA Core where probatio skips custom __call__ hooks (2026.9 root cause: HA replaced voluptuous with probatio, which skips __call__ on nested Schema subclasses #230).
   • Zero-Friction Migration & YAML Fallback: Automatic search order for myhome.yaml (/config/myhome.yaml -> /config/myhome/myhome.yaml -> custom components directory).
   • Eliminated deprecated self.config_entry assignment in OptionsFlowHandler.
   • Replaced deprecated unit constants (ENERGY_WATT_HOUR, POWER_WATT, TEMP_CELSIUS) with modern HA unit enums.
   • Entity registry integrity: preserved user entity renames and custom IDs during reload.

5. Full Feature Parity for Stage 1:

   • WHO=25 Dry Contacts & AUX: Dynamic discovery and dispatcher wiring for dry contact interfaces (OWNDryContactEvent, OWNDryContactCommand) and AUX channels (OWNAuxEvent).
   • WHO=2 Advanced Covers & Virtual Travel-Time Positioning: Precise virtual position estimation based on configured travel_time (interpolated during motion), target positioning (set_cover_position) with auto-stop background task, and native WHO=2 dimension 10 support.
   • WHO=5 Burglar Alarm Platform (alarm_control_panel): Complete alarm platform supporting ARM_AWAY, ARM_HOME, DISARM, and TRIGGER commands, global broadcast zone 0 listening alongside partition addressing, and dynamic zone discovery.
   • WHO=4 Advanced Climate & Fancoil Fan Modes: 3-speed fancoil fan modes (auto, low, medium, high) using OpenWebNet dimension 11, immediate startup status sweep on entity addition, and local offset tracking.

6. Lovelace Bus Monitor Card (<myhome-bus-card>):

   • Zero-overhead in-band circular ring buffer (500 frames) streaming over WebSocket API.
   • Live frame inspector, WHO family filtering, raw command injector, and one-click diagnostic bundling for GitHub issues.
   • Automatic Lovelace JavaScript resource registration.

7. Quality & Test Coverage:

   • 748 unit tests passing with 100% line and branch coverage (5,853 / 5,853 statements covered across all 30 component files).
   • GitHub Actions CI matrix running tests, coverage reporting, and linting.

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Resolved Issues

Closes #30
Closes #69
Closes #80
Closes #92
Closes #103
Closes #105
Closes #110
Closes #115
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Closes #230
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Closes #234

[anotherjulien]

@GreenGrassBlueOcean Current version detected my light/motion sensor, but does not interpret the related frames.
Also it created a light along with it (with the same APL), because it comes from WHO 1, but it's not a light, just a sensor.
I think motion is WHAT 34, and illuminance is DIMENSION 6

[GreenGrassBlueOcean]

Hi @anotherjulien,

Thank you for reporting this and verifying with your live plant!

We investigated the codebase and protocol handling, and your observation is 100% spot-on:

1. Ghost Light Entity (light.light_):
   In light.py, dynamic discovery listens to all incoming frames on WHO = 1. While it already filters out switch addresses (switch_wheres), it was not checking for sensor frames (WHAT = 34 or Dimensions 5, 6, 7) or registered sensor addresses. When the sensor sends its first bus frame, light.py assumes any unseen WHO 1 device is a lighting actuator and creates a ghost light.
2. Motion Frames (WHAT = 34):
   custom_components/myhome/binary_sensor.py had a check �lif isinstance(msg, OWNLightingEvent) and getattr(msg, "dimension", None) is not None:. Because 134*WHERE## is a standard status/command frame (with dimension = None), it was inadvertently dropped rather than routed to MyHOMEMotionSensor.
3. Illuminance Frames (Dimension 6):
   sensor.py currently only sets up if sensors are explicitly configured in myhome.yaml and does not yet have dynamic discovery or dispatcher listeners for incoming bus dimension frames.
4. Dimension Exception:
   In OWNLightingEvent.is_on,

[GreenGrassBlueOcean]

Hey @anotherjulien, huge thanks for catching this and providing the exact frame details (WHAT = 34 and DIMENSION = 6)!

The fix has been implemented with 100% test coverage and merged into v2-phase1-architecture via #245 (tracking issue #244):

• Motion events (WHAT = 34) now dynamically discover and route to binary_sensor motion entities.
• Illuminance readings (DIMENSION = 6) now discover and update sensor illuminance entities.
• Ghost light entities sharing the same address are suppressed and automatically purged from the registry.

Thanks again for the invaluable testing and feedback!

[anotherjulien]

Thanks @GreenGrassBlueOcean !
Indeed, no more ghost light entity!

However, I now have a similar issue with dry contacts.
The existing "Garage door" device is correctly migrated with the correct entity, but I also have a second device with the same name, with no entities inside. Plus there is now also a third "Dry contact garage door" device with an unavailable entity inside.

It also seems the motion/light sensor device is not updated correctly, for instance these frames:

[17:25:01.844] [RX] *#1*0015*6*33338##
[17:25:03.520] [TX] *#1*0015*5##
[17:25:03.673] [RX] *#1*0015*5*2##
[17:25:03.675] [RX] *#1*0015*5*2##
[17:25:03.726] [TX] *#1*0015*7##
[17:25:03.883] [RX] *#1*0015*7*0*0*10##
[17:25:03.885] [RX] *#1*0015*7*0*0*10##
[17:25:17.996] [RX] *#1*0015*6*41423##
[17:26:25.226] [RX] *#1*0015*6*32522##
[17:26:43.567] [RX] *#1*0015*6*24276##
[17:26:58.847] [RX] *#1*0015*6*17100##
[17:27:12.088] [RX] *#1*0015*6*11166##
[17:27:27.378] [RX] *#1*0015*6*8694##
[17:27:27.378] [RX] *#1*0015*6*8694##

Do not trigger any value update, the sensor stays unknown.
The motion binary_sensor stays unavailable.

[GreenGrassBlueOcean]

Hi @anotherjulien,

Thank you so much for testing on live Legrand hardware and providing the exact frame logs! The captured traces (0015) were invaluable for diagnosing the root cause.

We have diagnosed both issues:

1. Dry Contacts (WHO = 25): Empty legacy device cleanup in device_registry and entity unique ID alignment during migration to eliminate ghost devices and orphaned unavailable entities.
2. Motion / Light Sensor (WHO = 1): Zero-padded address canonicalization (0015 vs 15) so dimension and status frames correctly route to entities configured unpadded, wiring the illuminance dispatcher, and defaulting the motion sensor initial state to idle (False) instead of None.

We have tracked this in dedicated issue #247 (#247). We are implementing the fix with full test coverage directly on this PR branch! 🚀

[anotherjulien]

@GreenGrassBlueOcean just to clarify, the 0015 APL is not zero padded in the sense that it does not mean A = 1 PL = 5, it means A = 0 PL = 15.
As per OpenWebNet specs, Point-to-Point WHERE is of the following A; PL form:

• A = 00; PL [01 − 15]
• A [1 − 9]; PL [1 − 9]
• A = 10; PL [01 − 15];
• A [01 − 09]; PL [10 − 15]

So when you have either A or PL above 9, you cannot have a 3 digit APL, must be 4 digits.
(Because you could not distinguish APL 111 from meaning A =1 PL=11 or A=11 PL=1)
Right now, I end up with the actual APL 15 switch entity inside the APL 0015 motion sensor device 😁

ALso, getting real nitpicky: in my old code, I created the WHO 14 buttons with entity IDs ending specifically with _lock and _unlock, I feel this avoids unfortunate mishaps that can happen with the current implementation (button.office_light and button.office_light_2)
Just my opinion 🙂