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ESPHome - Smart Home Made Simple2026.7.2

BK72xx Bluetooth Low Energy

The bk72xx_ble component enables the Bluetooth Low Energy controller of the BLE-5.x LibreTiny Beken chips (beken-72xx family) — the platform analog of ESP32 BLE. It owns the BLE stack bring-up and the controller’s BLE address; higher-level consumers (such as the BK72xx BLE tracker) build on it and load it automatically.

Supported chips. Support is gated on the BLE 5.x SDK itself, not on a fixed chip list: BK7231N and BK7238 (e.g. the CB2S, CB3S, CBU and T34 modules) are selectable today; BK7236, BK7252N and BK7253 are covered automatically once LibreTiny exposes them. BK7231T, BK7251 and BK7271 (BLE 4.2) and BK7231Q (no BLE) are not supported — building for one fails with a clear error.

# Example configuration entry
bk72xx_ble:
  enable_on_boot: false

Configuration variables

Section titled “Configuration variables”
  • enable_on_boot (Optional, boolean): Bring the BLE stack up during boot. Defaults to false: on the single-core BK72xx, stack init during boot competes with the WiFi connection handshake, so consumers enable the stack lazily on first use instead.
  • id (Optional, ID): Manually specify the ID used to reference this component.

NOTE

BLE adapter address. On BK7231N the BLE MAC is the controller’s own address; on the other BLE-5.x chips (whose BLE stack does not expose one) it is derived as WiFi MAC + 1 (only the last byte incremented, OUI unchanged) — the standard factory pairing.

NOTE

The component automatically builds against beken-bdk 3.0.78; no manual platformio_options are needed. The bundled 3.0.33 has an older BLE header/library layout and can crash the device at boot when BLE is compiled in.

See Also

Section titled “See Also”