:orphan:

.. title:: CONFIG_ESP32_WIFI_STATIC_TX_BUFFER_NUM

.. kconfig:: CONFIG_ESP32_WIFI_STATIC_TX_BUFFER_NUM

CONFIG_ESP32_WIFI_STATIC_TX_BUFFER_NUM
######################################

*Max number of WiFi static TX buffers*

Type: ``int``

Help
====

.. code-block:: none

    Set the number of WiFi static TX buffers. Each buffer takes approximately
    1.6KB of RAM. The static RX buffers are allocated when esp_wifi_init() is
    called, they are not released until esp_wifi_deinit() is called.

    For each transmitted data frame from the higher layer TCP/IP stack,
    the WiFi driver makes a copy of it in a TX buffer.  For some applications
    especially UDP applications, the upper layer can deliver frames faster
    than WiFi layer can transmit.
    In these cases, we may run out of TX buffers.

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

\ :kconfig:`ESP32_WIFI_STATIC_TX_BUFFER <CONFIG_ESP32_WIFI_STATIC_TX_BUFFER>` && \ :kconfig:`WIFI_ESP32 <CONFIG_WIFI_ESP32>` && \ :kconfig:`WIFI <CONFIG_WIFI>`

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

Default
=======

- 16

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



At ``<Zephyr Driver>/wifi/esp32/Kconfig.esp32:104``

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

    config ESP32_WIFI_STATIC_TX_BUFFER_NUM
    	int "Max number of WiFi static TX buffers"
    	range 1 64
    	default 16
    	depends on ESP32_WIFI_STATIC_TX_BUFFER && WIFI_ESP32 && WIFI
    	help
    	  Set the number of WiFi static TX buffers. Each buffer takes approximately
    	  1.6KB of RAM. The static RX buffers are allocated when esp_wifi_init() is
    	  called, they are not released until esp_wifi_deinit() is called.
	  
    	  For each transmitted data frame from the higher layer TCP/IP stack,
    	  the WiFi driver makes a copy of it in a TX buffer.  For some applications
    	  especially UDP applications, the upper layer can deliver frames faster
    	  than WiFi layer can transmit.
    	  In these cases, we may run out of TX buffers.

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