nuttx/arch/arm/src/nrf52/Kconfig

#
# For a description of the syntax of this configuration file,
# see the file kconfig-language.txt in the NuttX tools repository.
#

comment "NRF52 Configuration Options"

choice
	prompt "NRF52 Chip Selection"
	default ARCH_CHIP_NRF52832
	depends on ARCH_CHIP_NRF52

config ARCH_CHIP_NRF52832
	bool "NRF52832"
	select ARCH_FAMILY_NRF52
	select NRF52_HAVE_BPROT

config ARCH_CHIP_NRF52833
	bool "NRF52832"
	select ARCH_FAMILY_NRF52
	select NRF52_HAVE_ACL
	select NRF52_HAVE_UART1
	select NRF52_HAVE_PORT1
	select NRF52_HAVE_SPI3_MASTER
	select NRF52_HAVE_USBDEV
	select NRF52_HAVE_PWM3

config ARCH_CHIP_NRF52840
	bool "NRF52840"
	select ARCH_FAMILY_NRF52
	select NRF52_HAVE_ACL
	select NRF52_HAVE_UART1
	select NRF52_HAVE_PORT1
	select NRF52_HAVE_SPI3_MASTER
	select NRF52_HAVE_QSPI
	select NRF52_HAVE_USBDEV
	select NRF52_HAVE_PWM3
	select NRF52_HAVE_CRYPTOCELL

endchoice # NRF52 Chip Selection

# NRF52 Families

config ARCH_FAMILY_NRF52
	bool
	default n

# Peripheral support

config NRF52_HAVE_BPROT
	bool
	default n

config NRF52_HAVE_ACL
	bool
	default n

config NRF52_HAVE_UART1
	bool
	default n

config NRF52_HAVE_PORT1
	bool
	default n

config NRF52_HAVE_SPI3_MASTER
	bool
	default n

config NRF52_HAVE_QSPI
	bool
	default n

config NRF52_HAVE_USBDEV
	bool
	default n

config NRF52_HAVE_PWM3
	bool
	default n

config NRF52_HAVE_CRYPTOCELL
	bool
	default n

# Peripheral Selection

config NRF52_I2C_MASTER
	bool
	default n

config NRF52_SPI_MASTER
	bool
	default n

config NRF52_UART
	bool
	default n

config NRF52_TIMER
	bool
	default n

config NRF52_PWM
	bool
	default n

config NRF52_RTC
	bool
	default n

menu "NRF52 Peripheral Selection"

config NRF52_I2C0_MASTER
	bool "I2C0 Master"
	default n
	select NRF52_I2C_MASTER

config NRF52_I2C1_MASTER
	bool "I2C1 Master"
	default n
	select NRF52_I2C_MASTER

config NRF52_SPI0_MASTER
	bool "SPI0 Master"
	default n
	select NRF52_SPI_MASTER

config NRF52_SPI1_MASTER
	bool "SPI1 Master"
	default n
	select NRF52_SPI_MASTER

config NRF52_SPI2_MASTER
	bool "SPI2 Master"
	default n
	select NRF52_SPI_MASTER

config NRF52_SPI3_MASTER
	bool "SPI3 Master"
	default n
	select NRF52_SPI_MASTER
	depends on NRF52_HAVE_SPI3_MASTER

if NRF52_SPI_MASTER

config NRF52_SPI_MASTER_INTERRUPTS
	bool "SPI Master interrupts support"
	default n

endif

config NRF52_GPIOTE
	bool "GPIOTE (GPIO interrupts)"
	default n

config NRF52_UART0
	bool "UART0"
	default n
	select UART0_SERIALDRIVER
	select NRF52_UART

config NRF52_UART1
	bool "UART1"
	default n
	depends on NRF52_HAVE_UART1
	select UART1_SERIALDRIVER
	select NRF52_UART

config NRF52_RNG
	bool "Random Generator"
	default n
	select ARCH_HAVE_RNG

config NRF52_QSPI
	bool "QSPI"
	default n
	depends on NRF52_HAVE_QSPI

config NRF52_WDT
	bool "Watchdog (WDT)"
	default n
	select WATCHDOG

config NRF52_RADIO
	bool "RADIO"
	depends on EXPERIMENTAL
	depends on !NRF52_SOFTDEVICE_CONTROLLER
	default n

config NRF52_NFCT
	bool "NFCT"
	default n

config NRF52_SAADC
	bool "SAADC"
	default n

config NRF52_TIMER0
	bool "TIMER0"
	select NRF52_TIMER
	depends on !NRF52_SOFTDEVICE_CONTROLLER
	default n

config NRF52_TIMER1
	bool "TIMER1"
	select NRF52_TIMER
	default n

config NRF52_TIMER2
	bool "TIMER2"
	select NRF52_TIMER
	default n

config NRF52_TIMER3
	bool "TIMER3"
	select NRF52_TIMER
	default n

config NRF52_TIMER4
	bool "TIMER4"
	select NRF52_TIMER
	default n

config NRF52_PWM0
	bool "PWM0"
	select NRF52_PWM
	default n

config NRF52_PWM1
	bool "PWM1"
	select NRF52_PWM
	default n

config NRF52_PWM2
	bool "PWM2"
	select NRF52_PWM
	default n

config NRF52_PWM3
	bool "PWM3"
	depends on NRF52_HAVE_PWM3
	select NRF52_PWM
	default n

config NRF52_PPI
  bool "PPI"
  default n

config NRF52_RTC0
	bool "RTC0"
	select NRF52_RTC
	depends on !NRF52_SOFTDEVICE_CONTROLLER
	default n

config NRF52_RTC1
	bool "RTC1"
	select NRF52_RTC
	default n

config NRF52_RTC2
	bool "RTC2"
	select NRF52_RTC
	default n

config NRF52_I2S
	bool "I2S"
	default n

config NRF52_USBDEV
	bool "USB Device"
	default n
	depends on NRF52_HAVE_USBDEV

config NRF52_COMP
	bool "COMP"
	default n

endmenu # NRF52 Peripheral Selection

menu "Clock Configuration"

config NRF52_HFCLK_XTAL
  bool "Enable HFCLK from external crystal"
  default n
  ---help---
    If the board includes an external high-frequency crystal, enable this
    option to supply the HFCLK. If this option is disabled, the internal
    oscillator will be used.
    Note that the RADIO peripheral requires the HFCLK to be used.

config NRF52_USE_LFCLK
  bool "Enable LFCLK"
  default n
  ---help---
    Enable low-frequency clock.

if NRF52_USE_LFCLK

choice
	prompt "LFCLK source"
	default NRF52_LFCLK_XTAL

config NRF52_LFCLK_XTAL
	bool "External 32.768Khz crystal"

config NRF52_LFCLK_RC
	bool "Internal RC oscillator"

config NRF52_LFCLK_SYNTH
  bool "Synthesized from HFCLK"

endchoice

endif # NRF52_USE_LFCLK

endmenu # Clock Configuration

menu "System Timer"

config NRF52_SYSTIMER
  bool
  default y

choice
  prompt "System Timer Source"
  default NRF52_SYSTIMER_SYSTICK
  ---help---
    Choose which hardware resource will drive NuttX
    system time

config NRF52_SYSTIMER_SYSTICK
  bool "SysTick"
  select TIMER_ARCH
  select TIMER
  select ARMV7M_SYSTICK
  ---help---
    Use ARM SysTick. It can be used for tickless and
    non-tickless mode.

    NOTE: nRF52 implementation of WFE/WFI involves is
    incompatible with SysTick. This means that if
    you choose this option, WFE/WFI will not be used
    in idle loop.

config NRF52_SYSTIMER_RTC
  bool "RTC"
  select NRF52_RTC
  select SCHED_TICKLESS
  select SCHED_TICKLESS_ALARM
  select NRF52_USE_LFCLK
  ---help---
    Use RTC timer in tickless mode.

endchoice

if NRF52_SYSTIMER_RTC

config NRF52_SYSTIMER_RTC_INSTANCE
  int "RTC timer instance"
  default 0 if !NRF52_SOFTDEVICE_CONTROLLER
  default 1 if NRF52_SOFTDEVICE_CONTROLLER
  range 0 2
  ---help---
    Which RTC instance to use to drive the system timer

endif

endmenu # System Timer

config NRF52_DCDC
  bool "Enable DC/DC regulator"
  default n
  ---help---
    This option enables the DC/DC regulator, which reduces
    current consumption. This requires extra circuitry (inductors).

config NRF52_FLASH_PREFETCH
	bool "Enable FLASH Pre-fetch"
	default y
	---help---
		Enable FLASH prefetch

config NRF52_PROGMEM
	bool "FLASH program memory"
	default n
	select ARCH_HAVE_PROGMEM
	---help---
		Enable support FLASH interfaces as defined in include/nuttx/progmem.h

menu "GPIO Interrupt Configuration"

config NRF52_PER_PIN_INTERRUPTS
	bool "Per-pin interrupt callbacks"
	default n if DEFAULT_SMALL
	default y if !DEFAULT_SMALL
	depends on NRF52_GPIOTE
	---help---
		The GPIOTE peripheral supports a limited number of channels which can
		be set to EVENT mode and thus generate interrupts on pin state changes.
		Another mechanism offered by the GPIO/GPIOTE peripherals is the PORT
		event. This event is generated from a signal shared by all pins in
		the GPIO port.

		This option enables the ability to set per-pin callbacks that will
		be invoked from the main GPIOTE ISR when a PORT event is generated.
		As this involves extra storage to store each callback, this option can
		be disabled to save space. In such case, it is possible to set a callback
		for the whole PORT event directly.

endmenu # GPIO Interrupt Configuration

menu "PWM configuration"

config NRF52_PWM_MULTICHAN
	bool "PWM Multiple Output Channels"
	default n

if NRF52_PWM_MULTICHAN

if NRF52_PWM0

config NRF52_PWM0_CH0
	bool "PWM0 Channel 0 Output"
	default n
	---help---
		Enables channel 0 output.

config NRF52_PWM0_CH1
	bool "PWM0 Channel 1 Output"
	default n
	---help---
		Enables channel 1 output.

config NRF52_PWM0_CH2
	bool "PWM0 Channel 2 Output"
	default n
	---help---
		Enables channel 2 output.

config NRF52_PWM0_CH3
	bool "PWM0 Channel 3 Output"
	default n
	---help---
		Enables channel 3 output.

endif # NRF52_PWM0

if NRF52_PWM1

config NRF52_PWM1_CH0
	bool "PWM1 Channel 0 Output"
	default n
	---help---
		Enables channel 0 output.

config NRF52_PWM1_CH1
	bool "PWM1 Channel 1 Output"
	default n
	---help---
		Enables channel 1 output.

config NRF52_PWM1_CH2
	bool "PWM1 Channel 2 Output"
	default n
	---help---
		Enables channel 2 output.

config NRF52_PWM1_CH3
	bool "PWM1 Channel 3 Output"
	default n
	---help---
		Enables channel 3 output.

endif # NRF52_PWM1

if NRF52_PWM2

config NRF52_PWM2_CH0
	bool "PWM2 Channel 0 Output"
	default n
	---help---
		Enables channel 0 output.

config NRF52_PWM2_CH1
	bool "PWM2 Channel 1 Output"
	default n
	---help---
		Enables channel 1 output.

config NRF52_PWM2_CH2
	bool "PWM2 Channel 2 Output"
	default n
	---help---
		Enables channel 2 output.

config NRF52_PWM2_CH3
	bool "PWM2 Channel 3 Output"
	default n
	---help---
		Enables channel 3 output.

endif # NRF52_PWM2

if NRF52_PWM3

config NRF52_PWM3_CH0
	bool "PWM3 Channel 0 Output"
	default n
	---help---
		Enables channel 0 output.

config NRF52_PWM3_CH1
	bool "PWM3 Channel 1 Output"
	default n
	---help---
		Enables channel 1 output.

config NRF52_PWM3_CH2
	bool "PWM3 Channel 2 Output"
	default n
	---help---
		Enables channel 2 output.

config NRF52_PWM3_CH3
	bool "PWM3 Channel 3 Output"
	default n
	---help---
		Enables channel 3 output.

endif # NRF52_PWM3

endif # !NRF52_PWM_MULTICHAN

if !NRF52_PWM_MULTICHAN

config NRF52_PWM0_CHANNEL
	int "PWM0 Output Channel"
	depends on NRF52_PWM0
	default 0
	range 0 3

config NRF52_PWM1_CHANNEL
	int "PWM1 Output Channel"
	depends on NRF52_PWM1
	default 0
	range 0 3

config NRF52_PWM2_CHANNEL
	int "PWM2 Output Channel"
	depends on NRF52_PWM2
	default 0
	range 0 3

config NRF52_PWM3_CHANNEL
	int "PWM3 Output Channel"
	depends on NRF52_PWM3
	default 0
	range 0 3

endif # !NRF52_PWM_MULTICHAN

endmenu # PWM configuration

menu "SAADC Configuration"

if NRF52_SAADC

choice
  prompt "SAADC trigger selection"
  default NRF52_SAADC_TASK
  ---help---
    Choose mode for sample rate control

config NRF52_SAADC_TASK
  bool "SAADC Task trigger"

config NRF52_SAADC_TIMER
  bool "SAADC Timer trigger"

endchoice # SAADC trigger selection

if NRF52_SAADC_TIMER

config NRF52_SAADC_TIMER_CC
	int "SAADC Timer CC"
	default 0
	range 80 2047

endif #NRF52_SAADC_TIMER

config NRF52_SAADC_OVERSAMPLE
	int "SAADC oversample"
	default 0
	range 0 8
	---help---
		SAADC oversample control

config NRF52_SAADC_RESOLUTION
	int "SAADC resolution"
	default 0
	range 0 3
	---help---
		SAADC resolution 0 - 8 bits, 1 - 10 bits, 2 - 12 bits, 3 - 14 bits

config NRF52_SAADC_CHANNELS
	int "SAADC channels"
	default 8
	range 0 8
	---help---
		SAADC channels

config NRF52_SAADC_LIMITS
	bool "SAADC limits enable"
	default n
	---help---
		SAADC limist enable

endif # NRF52_SAADC

endmenu # SAADC Configuration

menu "SPI Configuration"

config NRF52_SPI_MASTER_WORKAROUND_1BYTE_TRANSFER
	bool "Master 1 Byte transfer anomaly workaround"
	depends on NRF52_SPI_MASTER && ARCH_CHIP_NRF52832
	select NRF52_PPI
	default y
	---help---
		Enable the workaround to fix SPI Master 1 byte transfer bug
		which occurs in NRF52832 revision 1 and revision 2.
endmenu

menu "I2C Master Configuration"

config NRF52_I2C_MASTER_DISABLE_NOSTART
	bool "Disable the I2C Master NOSTART flag support"
	default n
	---help---
		To combine two i2c messages that are part of a
		single transaction (NO_STOP-NO_START) the nrf52
		hardware requires these be joined into a single
		transfer. This can be expensive and some devices
		can get away with multi-part transfers as separate
		transfers.  Enable this at your own risk!

config NRF52_I2C_MASTER_COPY_BUF_SIZE
	int "Static buffer size for NOSTART flag support"
	depends on !NRF52_I2C_MASTER_DISABLE_NOSTART
	default 4
	---help---
		To combine two i2c messages that are part of a
		single transaction (NO_STOP-NO_START) the nrf52
		hardware requires these be joined into a single
		transfer. This static buffer will be used if the
		transaction will fit otherwise it will fall back
		on malloc.

endmenu

menuconfig NRF52_SOFTDEVICE_CONTROLLER
	bool "SoftDevice Controller"
	select CONFIG_ARMV7M_USEBASEPRI
	select CONFIG_ARCH_RAMVECTORS
	select NRF52_USE_LFCLK
	select NRF52_LFCLK_XTAL
	---help---
		This enables use of Nordic SoftDevice controller
		(SDC). It is a library version of a subset of 
		full SoftDevice, which only includes the BLE
		controller implementation.

		It makes use of RTC0, TIMER0, RADIO and RNG, so
		these will be unavailable for direct use by user.
		It also makes use of PPI channel range 17-31.

if NRF52_SOFTDEVICE_CONTROLLER

config NRF52_SDC_CLOCK_ACCURACY
	int "Clock Accuracy [PPM]"
	default 250
	---help---
		Select the clock accuracy depending on the chosen low-frequency clock
		source

config NRF52_SDC_SLAVE_COUNT
	int "Number of slave roles to support (also master)"
	default 1
	---help---
		This controls how many slave connections will be supported. It also
		determines the number of master roles from the following:

		MASTER_ROLES = CONFIG_BLUETOOTH_MAX_CONN - NRF52_SDC_SLAVE_COUNT

		So by choosing these two variables you can control both capabilities.

config NRF52_SDC_ADVERTISING
	bool "Support advertising"
	default y

config NRF52_SDC_SCANNING
	bool "Support scanning"
	default y

config NRF52_SDC_LE_2M_PHY
	bool "Support LE 2M PHY"
	default y

config NRF52_SDC_LE_CODED_PHY
	bool "Support LE Coded PHY"
	default y

config NRF52_SDC_DLE
	bool "Support Data Length Extension (DLE)"
	default y

config NRF52_SDC_VERSION
	int "SoftDevice version"
	default 132 if ARCH_CHIP_NRF52832
	default 140 if ARCH_CHIP_NRF52840
	---help---
		The softdevice version to use. This depends on the particular chip
		to use. See official Nordic documentation on which chips are supported
		in each version.
endif