The latest development version of this page may be more current than this released 2.7.0 version.

CONFIG_BT_HCI_RESERVE

(No prompt – not directly user assignable.)

Type: int

Help

Headroom that the driver needs for sending and receiving buffers. Add a
new 'default' entry for each new driver.

Direct dependencies

BT_HCI && BT

(Includes any dependencies from ifs and menus.)

Defaults

• 0 if BT_H4

• 1 if BT_H5

• 1 if BT_RPMSG

• 1 if BT_SPI

• 1 if BT_STM32_IPM

• 1 if BT_USERCHAN

• 1 if BT_ESP32

• 0

Kconfig definition

At subsys/bluetooth/host/Kconfig:57

Included via Kconfig:8 → Kconfig.zephyr:44 → subsys/Kconfig:9 → subsys/bluetooth/Kconfig:174

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

config BT_HCI_RESERVE
    int
    default 0 if BT_H4
    default 1 if BT_H5
    default 1 if BT_RPMSG
    default 1 if BT_SPI
    default 1 if BT_STM32_IPM
    default 1 if BT_USERCHAN
    default 1 if BT_ESP32
    default 0
    depends on BT_HCI && BT
    help
      Headroom that the driver needs for sending and receiving buffers. Add a
      new 'default' entry for each new driver.

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