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¶

UART_3_ASYNC && UART_3_NRF_UARTE && UART_NRFX && SERIAL

(Includes any dependencies from ifs and menus.)

Defaults¶

No defaults. Implicitly defaults to n.

Kconfig definition¶

At <Zephyr>/drivers/serial/Kconfig.nrfx:290

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:32 → <Zephyr>/drivers/Kconfig:24 → <Zephyr>/drivers/serial/Kconfig:93

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

config UART_3_NRF_HW_ASYNC
    bool "Use hardware RX byte counting"
    depends on UART_3_ASYNC && UART_3_NRF_UARTE && UART_NRFX && 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.)