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# nrfx UART configuration
# Copyright (c) 2016 - 2018, Nordic Semiconductor ASA
# SPDX-License-Identifier: Apache-2.0
menuconfig UART_NRFX
bool "nRF UART nrfx drivers"
default y
select SERIAL_HAS_DRIVER
select SERIAL_SUPPORT_INTERRUPT
select SERIAL_SUPPORT_ASYNC
depends on DT_HAS_NORDIC_NRF_UART_ENABLED || DT_HAS_NORDIC_NRF_UARTE_ENABLED
help
Enable support for nrfx UART drivers for nRF MCU series.
Peripherals with the same instance ID cannot be used together,
e.g. UART_0 and UARTE_0.
if UART_NRFX
config UART_ASYNC_TX_CACHE_SIZE
int "TX cache buffer size"
depends on UART_ASYNC_API
depends on NRF_UARTE_PERIPHERAL
default 8
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.
config UART_NRF_DK_SERIAL_WORKAROUND
bool
help
On some development kits there are characters being dropped by the
controller chip (Segger interface) if there are burst of bytes being
printed. It can lead to test failures since test out is corrupted.
A workaround is to enforce gaps (by adding busy waits) in the transmission.
It is recommended to enable the workaround only in the test since
busy waits can impact application flow.
if UART_NRF_DK_SERIAL_WORKAROUND
config UART_NRF_DK_SERIAL_WORKAROUND_COUNT
int
default 64
help
Number of bytes transferred after which a busy wait is added.
config UART_NRF_DK_SERIAL_WORKAROUND_WAIT_MS
int
default 7
help
Busy wait time (in milliseconds).
endif
# ----------------- port 0 -----------------
config UART_0_NRF_UART
def_bool HAS_HW_NRF_UART0
depends on DT_HAS_NORDIC_NRF_UART_ENABLED
select NRF_UART_PERIPHERAL
help
Enable nRF UART without EasyDMA on port 0.
config UART_0_NRF_UARTE
def_bool HAS_HW_NRF_UARTE0
depends on DT_HAS_NORDIC_NRF_UARTE_ENABLED
select NRF_UARTE_PERIPHERAL
help
Enable nRF UART with EasyDMA on port 0.
if UART_0_NRF_UART || UART_0_NRF_UARTE
config UART_0_ENHANCED_POLL_OUT
bool "Efficient poll out on port 0"
default y
depends on UART_0_NRF_UARTE
help
When enabled, polling out does not trigger interrupt which stops TX.
Feature uses a PPI channel.
config UART_0_INTERRUPT_DRIVEN
bool "Interrupt support on port 0"
depends on UART_INTERRUPT_DRIVEN
default y
help
This option enables UART interrupt support on port 0.
config UART_0_ASYNC
bool "Asynchronous API support on port 0"
depends on UART_ASYNC_API && !UART_0_INTERRUPT_DRIVEN
default y
help
This option enables UART Asynchronous API support on port 0.
config UART_0_NRF_PARITY_BIT
bool "Parity bit"
help
Enable parity bit.
config UART_0_NRF_TX_BUFFER_SIZE
int "Size of RAM buffer"
depends on UART_0_NRF_UARTE
range 1 65535
default 32
help
Size of the transmit buffer for API function: fifo_fill.
This value is limited by range of TXD.MAXCNT register for
particular SoC.
config UART_0_NRF_HW_ASYNC
bool "Use hardware RX byte counting"
depends on UART_0_NRF_UARTE
depends on UART_ASYNC_API
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
config UART_0_NRF_ASYNC_LOW_POWER
bool "Low power mode"
depends on UART_0_NRF_UARTE
depends on UART_ASYNC_API
help
When enabled, UARTE is enabled before each TX or RX usage and disabled
when not used. Disabling UARTE while in idle allows to achieve lowest
power consumption. It is only feasible if receiver is not always on.
config UART_0_NRF_HW_ASYNC_TIMER
int "Timer instance"
depends on UART_0_NRF_HW_ASYNC
config UART_0_GPIO_MANAGEMENT
bool "GPIO management on port 0"
depends on PM_DEVICE
default y
help
If enabled, the driver will configure the GPIOs used by the uart to
their default configuration when device is powered down. The GPIOs
will be configured back to correct state when UART is powered up.
endif # UART_0_NRF_UART || UART_0_NRF_UARTE
# ----------------- port 1 -----------------
config UART_1_NRF_UARTE
def_bool HAS_HW_NRF_UARTE1
depends on DT_HAS_NORDIC_NRF_UARTE_ENABLED
select NRF_UARTE_PERIPHERAL
help
Enable nRF UART with EasyDMA on port 1.
if UART_1_NRF_UARTE
config UART_1_INTERRUPT_DRIVEN
bool "Interrupt support on port 1"
depends on UART_INTERRUPT_DRIVEN
default y
help
This option enables UART interrupt support on port 1.
config UART_1_ASYNC
bool "Asynchronous API support on port 1"
depends on UART_ASYNC_API && !UART_1_INTERRUPT_DRIVEN
default y
help
This option enables UART Asynchronous API support on port 1.
config UART_1_ENHANCED_POLL_OUT
bool "Efficient poll out on port 1"
default y
help
When enabled, polling out does not trigger interrupt which stops TX.
Feature uses a PPI channel.
config UART_1_NRF_PARITY_BIT
bool "Parity bit"
help
Enable parity bit.
config UART_1_NRF_TX_BUFFER_SIZE
int "Size of RAM buffer"
depends on UART_INTERRUPT_DRIVEN
range 1 65535
default 32
help
Size of the transmit buffer for API function: fifo_fill.
This value is limited by range of TXD.MAXCNT register for
particular SoC.
config UART_1_NRF_HW_ASYNC
bool "Use hardware RX byte counting"
depends on UART_1_ASYNC
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
config UART_1_NRF_ASYNC_LOW_POWER
bool "Low power mode"
depends on UART_ASYNC_API
help
When enabled, UARTE is enabled before each TX or RX usage and disabled
when not used. Disabling UARTE while in idle allows to achieve lowest
power consumption. It is only feasible if receiver is not always on.
config UART_1_NRF_HW_ASYNC_TIMER
int "Timer instance"
depends on UART_1_NRF_HW_ASYNC
config UART_1_GPIO_MANAGEMENT
bool "GPIO management on port 1"
depends on PM_DEVICE
default y
help
If enabled, the driver will configure the GPIOs used by the uart to
their default configuration when device is powered down. The GPIOs
will be configured back to correct state when UART is powered up.
endif # UART_1_NRF_UARTE
# ----------------- port 2 -----------------
config UART_2_NRF_UARTE
def_bool HAS_HW_NRF_UARTE2
depends on DT_HAS_NORDIC_NRF_UARTE_ENABLED
select NRF_UARTE_PERIPHERAL
help
Enable nRF UART with EasyDMA on port 2.
if UART_2_NRF_UARTE
config UART_2_INTERRUPT_DRIVEN
bool "Interrupt support on port 2"
depends on UART_INTERRUPT_DRIVEN
default y
help
This option enables UART interrupt support on port 2.
config UART_2_ASYNC
bool "Asynchronous API support on port 2"
depends on UART_ASYNC_API && !UART_2_INTERRUPT_DRIVEN
default y
help
This option enables UART Asynchronous API support on port 2.
config UART_2_ENHANCED_POLL_OUT
bool "Efficient poll out on port 2"
default y
help
When enabled, polling out does not trigger interrupt which stops TX.
Feature uses a PPI channel.
config UART_2_NRF_PARITY_BIT
bool "Parity bit"
help
Enable parity bit.
config UART_2_NRF_TX_BUFFER_SIZE
int "Size of RAM buffer"
range 1 65535
default 32
help
Size of the transmit buffer for API function: fifo_fill.
This value is limited by range of TXD.MAXCNT register for
particular SoC.
config UART_2_NRF_HW_ASYNC
bool "Use hardware RX byte counting"
depends on UART_2_ASYNC
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
config UART_2_NRF_ASYNC_LOW_POWER
bool "Low power mode"
depends on UART_ASYNC_API
help
When enabled, UARTE is enabled before each TX or RX usage and disabled
when not used. Disabling UARTE while in idle allows to achieve lowest
power consumption. It is only feasible if receiver is not always on.
config UART_2_NRF_HW_ASYNC_TIMER
int "Timer instance"
depends on UART_2_NRF_HW_ASYNC
config UART_2_GPIO_MANAGEMENT
bool "GPIO management on port 2"
depends on PM_DEVICE
default y
help
If enabled, the driver will configure the GPIOs used by the uart to
their default configuration when device is powered down. The GPIOs
will be configured back to correct state when UART is powered up.
endif # UART_2_NRF_UARTE
# ----------------- port 3 -----------------
config UART_3_NRF_UARTE
def_bool HAS_HW_NRF_UARTE3
depends on DT_HAS_NORDIC_NRF_UARTE_ENABLED
select NRF_UARTE_PERIPHERAL
help
Enable nRF UART with EasyDMA on port 3.
if UART_3_NRF_UARTE
config UART_3_INTERRUPT_DRIVEN
bool "Interrupt support on port 3"
depends on UART_INTERRUPT_DRIVEN
default y
help
This option enables UART interrupt support on port 3.
config UART_3_ASYNC
bool "Asynchronous API support on port 3"
depends on UART_ASYNC_API && !UART_3_INTERRUPT_DRIVEN
default y
help
This option enables UART Asynchronous API support on port 3.
config UART_3_ENHANCED_POLL_OUT
bool "Efficient poll out on port 3"
default y
help
When enabled, polling out does not trigger interrupt which stops TX.
Feature uses a PPI channel.
config UART_3_NRF_PARITY_BIT
bool "Parity bit"
help
Enable parity bit.
config UART_3_NRF_TX_BUFFER_SIZE
int "Size of RAM buffer"
range 1 65535
default 32
help
Size of the transmit buffer for API function: fifo_fill.
This value is limited by range of TXD.MAXCNT register for
particular SoC.
config UART_3_NRF_HW_ASYNC
bool "Use hardware RX byte counting"
depends on UART_3_ASYNC
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
config UART_3_NRF_ASYNC_LOW_POWER
bool "Low power mode"
depends on UART_ASYNC_API
help
When enabled, UARTE is enabled before each TX or RX usage and disabled
when not used. Disabling UARTE while in idle allows to achieve lowest
power consumption. It is only feasible if receiver is not always on.
config UART_3_NRF_HW_ASYNC_TIMER
int "Timer instance"
depends on UART_3_NRF_HW_ASYNC
config UART_3_GPIO_MANAGEMENT
bool "GPIO management on port 3"
depends on PM_DEVICE
default y
help
If enabled, the driver will configure the GPIOs used by the uart to
their default configuration when device is powered down. The GPIOs
will be configured back to correct state when UART is powered up.
endif # UART_3_NRF_UARTE
config NRFX_TIMER0
default y
depends on UART_0_NRF_HW_ASYNC_TIMER = 0 \
|| UART_1_NRF_HW_ASYNC_TIMER = 0 \
|| UART_2_NRF_HW_ASYNC_TIMER = 0 \
|| UART_3_NRF_HW_ASYNC_TIMER = 0
config NRFX_TIMER1
default y
depends on UART_0_NRF_HW_ASYNC_TIMER = 1 \
|| UART_1_NRF_HW_ASYNC_TIMER = 1 \
|| UART_2_NRF_HW_ASYNC_TIMER = 1 \
|| UART_3_NRF_HW_ASYNC_TIMER = 1
config NRFX_TIMER2
default y
depends on UART_0_NRF_HW_ASYNC_TIMER = 2 \
|| UART_1_NRF_HW_ASYNC_TIMER = 2 \
|| UART_2_NRF_HW_ASYNC_TIMER = 2 \
|| UART_3_NRF_HW_ASYNC_TIMER = 2
config NRFX_TIMER3
default y
depends on UART_0_NRF_HW_ASYNC_TIMER = 3 \
|| UART_1_NRF_HW_ASYNC_TIMER = 3 \
|| UART_2_NRF_HW_ASYNC_TIMER = 3 \
|| UART_3_NRF_HW_ASYNC_TIMER = 3
config NRFX_TIMER4
default y
depends on UART_0_NRF_HW_ASYNC_TIMER = 4 \
|| UART_1_NRF_HW_ASYNC_TIMER = 4 \
|| UART_2_NRF_HW_ASYNC_TIMER = 4 \
|| UART_3_NRF_HW_ASYNC_TIMER = 4
config UARTE_NRF_HW_ASYNC
def_bool y
depends on UART_0_NRF_HW_ASYNC \
|| UART_1_NRF_HW_ASYNC \
|| UART_2_NRF_HW_ASYNC \
|| UART_3_NRF_HW_ASYNC
select NRFX_PPI if HAS_HW_NRF_PPI
select NRFX_DPPI if HAS_HW_NRF_DPPIC
config UART_ENHANCED_POLL_OUT
def_bool y
depends on UART_0_ENHANCED_POLL_OUT \
|| UART_1_ENHANCED_POLL_OUT \
|| UART_2_ENHANCED_POLL_OUT \
|| UART_3_ENHANCED_POLL_OUT
select NRFX_PPI if HAS_HW_NRF_PPI
select NRFX_DPPI if HAS_HW_NRF_DPPIC
config NRF_UART_PERIPHERAL
bool
config NRF_UARTE_PERIPHERAL
bool
endif # UART_NRFX