:orphan:

.. title:: CONFIG_BT_HCI_TX_STACK_SIZE

.. kconfig:: CONFIG_BT_HCI_TX_STACK_SIZE

CONFIG_BT_HCI_TX_STACK_SIZE
###########################

*HCI Tx thread stack size*

Type: ``int``

Help
====

.. code-block:: none

    Stack size needed for executing bt_send with specified driver.
    NOTE: This is an advanced setting and should not be changed unless
    absolutely necessary.  To change this you must first select
    BT_HCI_TX_STACK_SIZE_WITH_PROMPT.

Direct dependencies
===================

\ :kconfig:`BT_HCI <CONFIG_BT_HCI>` && \ :kconfig:`BT <CONFIG_BT>`

*(Includes any dependencies from ifs and menus.)*

Defaults
========

- 512 if \ :kconfig:`BT_H4 <CONFIG_BT_H4>`
- 512 if \ :kconfig:`BT_H5 <CONFIG_BT_H5>`
- 416 if \ :kconfig:`BT_SPI <CONFIG_BT_SPI>`
- 940 if \ :kconfig:`BT_CTLR <CONFIG_BT_CTLR>` && \ :kconfig:`BT_LL_SW_SPLIT <CONFIG_BT_LL_SW_SPLIT>` && \ :kconfig:`NO_OPTIMIZATIONS <CONFIG_NO_OPTIMIZATIONS>`
- 1024 if \ :kconfig:`BT_CTLR <CONFIG_BT_CTLR>` && \ :kconfig:`BT_LL_SW_SPLIT <CONFIG_BT_LL_SW_SPLIT>` && \ :kconfig:`BT_CENTRAL <CONFIG_BT_CENTRAL>`
- 640 if \ :kconfig:`BT_CTLR <CONFIG_BT_CTLR>` && \ :kconfig:`BT_LL_SW_SPLIT <CONFIG_BT_LL_SW_SPLIT>`
- 512 if \ :kconfig:`BT_USERCHAN <CONFIG_BT_USERCHAN>`
- 640 if \ :kconfig:`BT_STM32_IPM <CONFIG_BT_STM32_IPM>`
- 1024

Kconfig definition
==================



At ``<Zephyr Subsystem>/bluetooth/host/Kconfig:17``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:44`` → ``<Zephyr Subsystem>/Kconfig:9`` → ``<Zephyr Subsystem>/bluetooth/Kconfig:174``

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

.. code-block:: kconfig

    config BT_HCI_TX_STACK_SIZE
    	int "HCI Tx thread stack size" if BT_HCI_TX_STACK_SIZE_WITH_PROMPT
    	default 512 if BT_H4
    	default 512 if BT_H5
    	default 416 if BT_SPI
    	default 940 if BT_CTLR && BT_LL_SW_SPLIT && NO_OPTIMIZATIONS
    	default 1024 if BT_CTLR && BT_LL_SW_SPLIT && BT_CENTRAL
    	default 640 if BT_CTLR && BT_LL_SW_SPLIT
    	default 512 if BT_USERCHAN
    	default 640 if BT_STM32_IPM
    	default 1024
    	depends on BT_HCI && BT
    	help
    	  Stack size needed for executing bt_send with specified driver.
    	  NOTE: This is an advanced setting and should not be changed unless
    	  absolutely necessary.  To change this you must first select
    	  BT_HCI_TX_STACK_SIZE_WITH_PROMPT.

*(The 'depends on' condition includes propagated dependencies from ifs and menus.)*