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# nrfx I2C support
# Copyright (c) 2018, Nordic Semiconductor ASA
# SPDX-License-Identifier: Apache-2.0
menuconfig I2C_NRFX
bool "nRF TWI nrfx drivers"
default y
depends on SOC_FAMILY_NRF
help
Enable support for nrfx TWI drivers for nRF MCU series.
Peripherals with the same instance ID cannot be used together,
e.g. I2C_0 and SPI_0. You may need to disable SPI_0 or SPI_1.
if I2C_NRFX
# In most Nordic SoCs, SPI and TWI peripherals with the same instance number
# share certain resources and therefore cannot be used at the same time
# (in nRF91 Series this limitation concerns UART peripherals as well).
# In nRF52810 though, there are only single instances of these peripherals
# and they are arranged in a different way, so this limitation does not apply.
if I2C_0 && (SOC_NRF52810 || \
(!SPI_0 && !(SOC_SERIES_NRF91X && UART_0_NRF_UARTE)))
choice I2C_0_NRF_TYPE
prompt "I2C Port 0 Driver type"
config I2C_0_NRF_TWI
bool "nRF TWI 0"
depends on HAS_HW_NRF_TWI0
select NRFX_TWI0
help
Enable nRF TWI Master without EasyDMA on port 0.
config I2C_0_NRF_TWIM
bool "nRF TWIM 0"
depends on HAS_HW_NRF_TWIM0
select NRFX_TWIM0
help
Enable nRF TWI Master with EasyDMA on port 0.
This peripheral accepts transfers from RAM only,
if provided buffer is placed in flash, transfer will fail.
endchoice
endif # I2C_0 && (SOC_NRF52810 || ...
# In Nordic SoCs, SPI and TWI peripherals with the same instance number
# share certain resources and therefore cannot be used at the same time
# (in nRF91 Series this limitation concerns UART peripherals as well).
if I2C_1 && !SPI_1 && !(SOC_SERIES_NRF91X && UART_1_NRF_UARTE)
choice I2C_1_NRF_TYPE
prompt "I2C Port 1 Driver type"
config I2C_1_NRF_TWI
bool "nRF TWI 1"
depends on HAS_HW_NRF_TWI1
select NRFX_TWI1
help
Enable nRF TWI Master without EasyDMA on port 1.
config I2C_1_NRF_TWIM
bool "nRF TWIM 1"
depends on HAS_HW_NRF_TWIM1
select NRFX_TWIM1
help
Enable nRF TWI Master with EasyDMA on port 1.
This peripheral accepts transfers from RAM only,
if provided buffer is placed in flash, transfer will fail.
endchoice
endif # I2C_1 && !SPI_1 && !(SOC_SERIES_NRF91X && UART_1_NRF_UARTE)
# In Nordic SoCs, SPI and TWI peripherals with the same instance number
# share certain resources and therefore cannot be used at the same time
# (in nRF91 Series this limitation concerns UART peripherals as well).
if I2C_2 && !SPI_2 && !(SOC_SERIES_NRF91X && UART_2_NRF_UARTE)
choice I2C_2_NRF_TYPE
prompt "I2C Port 2 Driver type"
config I2C_2_NRF_TWIM
bool "nRF TWIM 2"
depends on HAS_HW_NRF_TWIM2
select NRFX_TWIM2
help
Enable nRF TWI Master with EasyDMA on port 2.
This peripheral accepts transfers from RAM only,
if provided buffer is placed in flash, transfer will fail.
endchoice
endif # I2C_2 && !SPI_2 && !(SOC_SERIES_NRF91X && UART_2_NRF_UARTE)
# In Nordic SoCs, SPI and TWI peripherals with the same instance number
# share certain resources and therefore cannot be used at the same time
# (in nRF91 Series SoCs this limitation concerns UART peripherals as well).
if I2C_3 && !SPI_3 && !(SOC_SERIES_NRF91X && UART_3_NRF_UARTE)
choice I2C_3_NRF_TYPE
prompt "I2C Port 3 Driver type"
config I2C_3_NRF_TWIM
bool "nRF TWIM 3"
depends on HAS_HW_NRF_TWIM3
select NRFX_TWIM3
help
Enable nRF TWI Master with EasyDMA on port 3.
This peripheral accepts transfers from RAM only,
if provided buffer is placed in flash, transfer will fail.
endchoice
endif # I2C_3 && !SPI_3 && !(SOC_SERIES_NRF91X && UART_3_NRF_UARTE)
endif # I2C_NRFX