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# Kconfig.nrfx - 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 SOC_FAMILY_NRF
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
# ----------------- port 0 -----------------
choice
prompt "UART Port 0 Driver type"
optional
config UART_0_NRF_UART
bool "nRF UART 0"
depends on HAS_HW_NRF_UART0
select NRF_UART_PERIPHERAL
help
Enable nRF UART without EasyDMA on port 0.
config UART_0_NRF_UARTE
bool "nRF UARTE 0"
# In nRF91 Series SoCs, UART peripherals share certain resources with
# SPI and TWI peripherals having the same instance number, and therefore
# these cannot be used simultaneously.
depends on HAS_HW_NRF_UARTE0 && !(SOC_SERIES_NRF91X && (SPI_0 || I2C_0))
select NRF_UARTE_PERIPHERAL
help
Enable nRF UART with EasyDMA on port 0.
endchoice
if UART_0_NRF_UART || UART_0_NRF_UARTE
config UART_0_INTERRUPT_DRIVEN
bool "Enable 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 "Enable 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 "Enable parity bit"
help
Enable parity bit.
config UART_0_NRF_FLOW_CONTROL
bool "Enable flow control"
help
Enable flow control. If selected, additionally two pins, RTS and CTS
have to be configured.
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_HW_ASYNC_TIMER
int "Timer instance"
depends on UART_0_NRF_HW_ASYNC
endif # UART_0_NRF_UART || UART_0_NRF_UARTE
# ----------------- port 1 -----------------
config UART_1_NRF_UARTE
bool "nRF UARTE 1"
# In nRF91 Series SoCs, UART peripherals share certain resources with
# SPI and TWI peripherals having the same instance number, and therefore
# these cannot be used simultaneously.
depends on HAS_HW_NRF_UARTE1 && !(SOC_SERIES_NRF91X && (SPI_1 || I2C_1))
select NRF_UARTE_PERIPHERAL
help
Enable nRF UART with EasyDMA on port 1.
if UART_1_NRF_UARTE
config UART_1_INTERRUPT_DRIVEN
bool "Enable 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 "Enable 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_NRF_PARITY_BIT
bool "Enable parity bit"
help
Enable parity bit.
config UART_1_NRF_FLOW_CONTROL
bool "Enable flow control"
help
Enable flow control. If selected, additionally two pins, RTS and CTS
have to be configured.
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_HW_ASYNC_TIMER
int "Timer instance"
depends on UART_1_NRF_HW_ASYNC
endif # UART_1_NRF_UARTE
# ----------------- port 2 -----------------
config UART_2_NRF_UARTE
bool "nRF UARTE 2"
# In nRF91 Series SoCs, UART peripherals share certain resources with
# SPI and TWI peripherals having the same instance number, and therefore
# these cannot be used simultaneously.
depends on HAS_HW_NRF_UARTE2 && !(SOC_SERIES_NRF91X && (SPI_2 || I2C_2))
select NRF_UARTE_PERIPHERAL
help
Enable nRF UART with EasyDMA on port 2.
if UART_2_NRF_UARTE
config UART_2_INTERRUPT_DRIVEN
bool "Enable 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 "Enable 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_NRF_PARITY_BIT
bool "Enable parity bit"
help
Enable parity bit.
config UART_2_NRF_FLOW_CONTROL
bool "Enable flow control"
help
Enable flow control. If selected, additionally two pins, RTS and CTS
have to be configured.
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_HW_ASYNC_TIMER
int "Timer instance"
depends on UART_2_NRF_HW_ASYNC
endif # UART_2_NRF_UARTE
# ----------------- port 3 -----------------
config UART_3_NRF_UARTE
bool "nRF UARTE 3"
# In nRF91 Series SoCs, UART peripherals share certain resources with
# SPI and TWI peripherals having the same instance number, and therefore
# these cannot be used simultaneously.
depends on HAS_HW_NRF_UARTE3 && !(SOC_SERIES_NRF91X && (SPI_3 || I2C_3))
select NRF_UARTE_PERIPHERAL
help
Enable nRF UART with EasyDMA on port 3.
if UART_3_NRF_UARTE
config UART_3_INTERRUPT_DRIVEN
bool "Enable 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 "Enable 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_NRF_PARITY_BIT
bool "Enable parity bit"
help
Enable parity bit.
config UART_3_NRF_FLOW_CONTROL
bool "Enable flow control"
help
Enable flow control. If selected, additionally two pins, RTS and CTS
have to be configured.
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_HW_ASYNC_TIMER
int "Timer instance"
depends on UART_3_NRF_HW_ASYNC
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_3_NRF_HW_ASYNC_TIMER = 0 || UART_2_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_3_NRF_HW_ASYNC_TIMER = 1 || UART_2_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_3_NRF_HW_ASYNC_TIMER = 2 || UART_2_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_3_NRF_HW_ASYNC_TIMER = 3 || UART_2_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_3_NRF_HW_ASYNC_TIMER = 4 || UART_2_NRF_HW_ASYNC_TIMER = 4
if UART_0_NRF_HW_ASYNC || UART_1_NRF_HW_ASYNC || UART_2_NRF_HW_ASYNC || UART_3_NRF_HW_ASYNC
config NRFX_TIMER
default y
config NRFX_PPI
depends on HAS_HW_NRF_PPI
default y
config NRFX_DPPI
depends on HAS_HW_NRF_DPPIC
default y
config UARTE_NRF_HW_ASYNC
bool
default y
endif
config NRF_UART_PERIPHERAL
bool
config NRF_UARTE_PERIPHERAL
bool
endif # UART_NRFX