:orphan:

.. title:: CONFIG_UART_ASYNC_TX_CACHE_SIZE

.. kconfig:: CONFIG_UART_ASYNC_TX_CACHE_SIZE

CONFIG_UART_ASYNC_TX_CACHE_SIZE
###############################

*TX cache buffer size*

Type: ``int``

Help
====

.. code-block:: none

    For UARTE, TX cache buffer is used when provided TX buffer is not located
    in RAM, because EasyDMA in UARTE peripherals can only transfer data
    from RAM.

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

\ :kconfig:`UART_ASYNC_API <CONFIG_UART_ASYNC_API>` && \ :kconfig:`NRF_UARTE_PERIPHERAL <CONFIG_NRF_UARTE_PERIPHERAL>` && \ :kconfig:`UART_NRFX <CONFIG_UART_NRFX>` && \ :kconfig:`SERIAL <CONFIG_SERIAL>`

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

Default
=======

- 8

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



At ``<Driver>/serial/Kconfig.nrfx:20``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:42`` → ``<Driver>/Kconfig:26`` → ``<Driver>/serial/Kconfig:132``

Menu path: (Top) → Device Drivers → Serial Drivers → nRF UART nrfx drivers

.. code-block:: kconfig

    config UART_ASYNC_TX_CACHE_SIZE
    	int "TX cache buffer size"
    	default 8
    	depends on UART_ASYNC_API && NRF_UARTE_PERIPHERAL && UART_NRFX && SERIAL
    	help
    	  For UARTE, TX cache buffer is used when provided TX buffer is not located
    	  in RAM, because EasyDMA in UARTE peripherals can only transfer data
    	  from RAM.

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