Jannis/ha-xiaoxiang-bms
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Refactor BLE layer for 24/7 reliability

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- Replace raw BleakClient with establish_connection from
  bleak-retry-connector (retries, GATT service cache, proxy-aware)
- Replace fragile asyncio.Event with asyncio.Queue for response frames,
  drain stale data on each connection to prevent cross-cycle leakage
- Register BLE advertisement callback to keep BLEDevice reference fresh
  across ESPHome proxy path changes
- Remove asyncio.sleep(2) device lookup hack
- Increase poll timeout floor from 10s to 20s
- Increase failure tolerance from 3 to 5 consecutive misses
- Bump default poll interval to 30s, min to 15s (halves connection churn)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Jannis Christiani
2026-04-12 09:36:08 +02:00
parent c00d9b66c2
commit 1520ed3c0f
4 changed files with 131 additions and 72 deletions
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custom_components/xiaoxiang_bms/const.py
+2 -2
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@@ -5,8 +5,8 @@ DOMAIN = "xiaoxiang_bms"
CONF_ADDRESS = "address"
CONF_POLL_INTERVAL = "poll_interval"
DEFAULT_POLL_INTERVAL = 15 # seconds — each poll does a full BLE connect/disconnect
MIN_POLL_INTERVAL = 10 # below this the BMS has no breathing room between polls
DEFAULT_POLL_INTERVAL = 30 # seconds — each poll does a full BLE connect/disconnect
MIN_POLL_INTERVAL = 15 # below this the BMS has no breathing room between polls
MAX_POLL_INTERVAL = 300
# GATT UUIDs (Xiaoxiang BMS UART-over-GATT)