:orphan:

.. title:: UART_1_NRF_HW_ASYNC

.. option:: CONFIG_UART_1_NRF_HW_ASYNC

*Use hardware RX byte counting*

Type: ``bool``

Help
====

If default driver uses interrupts to count incoming bytes, it is possible
that with higher speeds and/or high cpu load some data can be lost.
It is recommended to use hardware byte counting in such scenarios.
Hardware RX byte counting requires timer instance and one PPI channel

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

\ :option:`UART_1_ASYNC <CONFIG_UART_1_ASYNC>` && \ :option:`UART_1_NRF_UARTE <CONFIG_UART_1_NRF_UARTE>` && \ :option:`UART_NRFX <CONFIG_UART_NRFX>` && \ :option:`SERIAL <CONFIG_SERIAL>`

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

Defaults
========

No defaults. Implicitly defaults to ``n``.

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

.. highlight:: kconfig

At ``drivers/serial/Kconfig.nrfx:150``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:32`` → ``drivers/Kconfig:24`` → ``drivers/serial/Kconfig:93``

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

.. parsed-literal::

    config UART_1_NRF_HW_ASYNC
    	bool "Use hardware RX byte counting"
    	depends on \ :option:`UART_1_ASYNC <CONFIG_UART_1_ASYNC>` && \ :option:`UART_1_NRF_UARTE <CONFIG_UART_1_NRF_UARTE>` && \ :option:`UART_NRFX <CONFIG_UART_NRFX>` && \ :option:`SERIAL <CONFIG_SERIAL>`
    	help
    	  If default driver uses interrupts to count incoming bytes, it is possible
    	  that with higher speeds and/or high cpu load some data can be lost.
    	  It is recommended to use hardware byte counting in such scenarios.
    	  Hardware RX byte counting requires timer instance and one PPI channel

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