:orphan:

.. title:: choice ESP32_WIFI_TX_BUFFER: Type of WiFi TX buffers

.. _choice_443:

.. describe:: choice ESP32_WIFI_TX_BUFFER: Type of WiFi TX buffers

*Type of WiFi TX buffers*

Type: ``bool``

Help
====

.. code-block:: none

    Select type of WiFi TX buffers:

    If "Static" is selected, WiFi TX buffers are allocated when WiFi is
    initialized and released when WiFi is de-initialized. The size of each
    static TX buffer is fixed to about 1.6KB.

    If "Dynamic" is selected, each WiFi TX buffer is allocated as needed
    when a data frame is delivered to the Wifi driver from the TCP/IP stack.
    The buffer is freed after the data frame has been sent by the WiFi driver.
    The size of each dynamic TX buffer depends on the length of each data
    frame sent by the TCP/IP layer.

    If PSRAM is enabled, "Static" should be selected to guarantee enough
    WiFi TX buffers. If PSRAM is disabled, "Dynamic" should be selected
    to improve the utilization of RAM.

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

\ :kconfig:`WIFI_ESP32 <CONFIG_WIFI_ESP32>` && \ :kconfig:`WIFI <CONFIG_WIFI>`

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

Default
=======

- \ :kconfig:`ESP32_WIFI_DYNAMIC_TX_BUFFER <CONFIG_ESP32_WIFI_DYNAMIC_TX_BUFFER>`

Choice options
==============

- \ :kconfig:`ESP32_WIFI_STATIC_TX_BUFFER <CONFIG_ESP32_WIFI_STATIC_TX_BUFFER>`
- \ :kconfig:`ESP32_WIFI_DYNAMIC_TX_BUFFER <CONFIG_ESP32_WIFI_DYNAMIC_TX_BUFFER>`

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



At ``<Zephyr Driver>/wifi/esp32/Kconfig.esp32:73``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:42`` → ``<Zephyr Driver>/Kconfig:78`` → ``<Zephyr Driver>/wifi/Kconfig:36``

Menu path: (Top) → Device Drivers → Wi-Fi Drivers → ESP32 SoC WiFi support

.. code-block:: kconfig

    choice ESP32_WIFI_TX_BUFFER
    	bool "Type of WiFi TX buffers"
    	default ESP32_WIFI_DYNAMIC_TX_BUFFER
    	depends on WIFI_ESP32 && WIFI
    	help
    	  Select type of WiFi TX buffers:
	  
    	  If "Static" is selected, WiFi TX buffers are allocated when WiFi is
    	  initialized and released when WiFi is de-initialized. The size of each
    	  static TX buffer is fixed to about 1.6KB.
	  
    	  If "Dynamic" is selected, each WiFi TX buffer is allocated as needed
    	  when a data frame is delivered to the Wifi driver from the TCP/IP stack.
    	  The buffer is freed after the data frame has been sent by the WiFi driver.
    	  The size of each dynamic TX buffer depends on the length of each data
    	  frame sent by the TCP/IP layer.
	  
    	  If PSRAM is enabled, "Static" should be selected to guarantee enough
    	  WiFi TX buffers. If PSRAM is disabled, "Dynamic" should be selected
    	  to improve the utilization of RAM.

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