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CONFIG_BT_CTLR_LOW_LAT¶

Low latency non-negotiating event preemption

Type: bool

Help¶

Use low latency non-negotiating event preemption. This reduces
Radio ISR latencies by the controller event scheduling framework.
Consequently, this reduces on-air radio utilization due to redundant
radio state switches.

Direct dependencies¶

BT_LL_SW_SPLIT && BT_CTLR && BT_HCI && BT

(Includes any dependencies from ifs and menus.)

Default¶

y if SOC_SERIES_NRF51X

Symbols selected by this symbol¶

BT_CTLR_LOW_LAT_ULL_DONE

Kconfig definition¶

At subsys/bluetooth/controller/Kconfig.ll_sw_split:351

Included via Kconfig:8 → Kconfig.zephyr:44 → subsys/Kconfig:9 → subsys/bluetooth/Kconfig:175 → subsys/bluetooth/controller/Kconfig:659

Menu path: (Top) → Sub Systems and OS Services → Bluetooth → Bluetooth Controller → Advanced features

config BT_CTLR_LOW_LAT
    bool "Low latency non-negotiating event preemption" if BT_CTLR_ADVANCED_FEATURES
    default y if SOC_SERIES_NRF51X
    select BT_CTLR_LOW_LAT_ULL_DONE
    depends on BT_LL_SW_SPLIT && BT_CTLR && BT_HCI && BT
    help
      Use low latency non-negotiating event preemption. This reduces
      Radio ISR latencies by the controller event scheduling framework.
      Consequently, this reduces on-air radio utilization due to redundant
      radio state switches.

(The ‘depends on’ condition includes propagated dependencies from ifs and menus.)