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

Kconfig definition¶

At <Zephyr>/subsys/bluetooth/controller/Kconfig.ll_sw_split:294

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:34 → <Zephyr>/subsys/Kconfig:9 → <Zephyr>/subsys/bluetooth/Kconfig:240 → <Zephyr>/subsys/bluetooth/controller/Kconfig:595

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
    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.)