nuttx/drivers/timers/Kconfig

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

menu "Timer Driver Support"

config ARCH_HAVE_PWM_PULSECOUNT
	bool
	default n

config ARCH_HAVE_PWM_MULTICHAN
	bool
	default n

config PWM
	bool "PWM Driver Support"
	default n
	---help---
		This selection enables building of the "upper-half" PWM driver.
		See include/nuttx/timers/pwm.h for further PWM driver information.

if PWM

config PWM_PULSECOUNT
	bool "PWM Pulse Count Support"
	default n
	depends on ARCH_HAVE_PWM_PULSECOUNT
	---help---
		Some hardware will support generation of a fixed number of pulses.
		This might be used, for example to support a stepper motor.  If the
		hardware will support a fixed pulse count, then this configuration
		should be set to enable the capability.

config PWM_MULTICHAN
	bool "PWM Multiple Output Channel Support"
	default n
	depends on ARCH_HAVE_PWM_MULTICHAN
	depends on !PWM_PULSECOUNT
	---help---
		Enables support for multiple output channels per timer.

if PWM_MULTICHAN

config PWM_NCHANNELS
	int "Number of Output Channels Per Timer"
	default 1
	range 1 6
	---help---
		Specifies the number of output channels per timer.  Each timer
		may support fewer output channels than this value.

endif # PWM_MULTICHAN
endif # PWM

config TIMER
	bool "Timer Support"
	default n
	---help---
		This selection enables building of the "upper-half" timer
		driver. See include/nuttx/timers/timer.h for further timer driver
		information.

if TIMER

config TIMER_ARCH
	bool "Timer Arch Implementation"
	select ARCH_HAVE_TICKLESS
	select ARCH_HAVE_TIMEKEEPING
	---help---
		Implement timer arch API on top of timer driver interface.

endif # TIMER

config ONESHOT
	bool "Oneshot timer driver"
	default n
	---help---
		This selection enables building of the "upper-half" oneshot timer
		driver. See include/nuttx/timers/oneshot.h for further oneshot timer
		driver information.

if ONESHOT

config ALARM_ARCH
	bool "Alarm Arch Implementation"
	select ARCH_HAVE_TICKLESS
	select ARCH_HAVE_TIMEKEEPING
	---help---
		Implement alarm arch API on top of oneshot driver interface.

endif # ONESHOT

menuconfig RTC
	bool "RTC Driver Support"
	default n
	---help---
		This selection enables configuration of a real time clock (RTCdriver.
		See include/nuttx/timers/rtc.h for further RTC driver information.
		Most RTC drivers are MCU specific and may require other specific
		settings.

if RTC

config RTC_DATETIME
	bool "Date/Time RTC Support"
	default n
	---help---
		There are two general types of RTC:  (1) A simple battery backed
		counter that keeps the time when power is down, and (2) a full
		date / time RTC the provides the date and time information, often in
		BCD format.  If RTC_DATETIME is selected, it specifies this second kind
		of RTC. In this case, the RTC is used to "seed" the normal NuttX timer
		and the NuttX system timer provides for higher resolution time.

if !RTC_DATETIME

config RTC_HIRES
	bool "Hi-Res RTC Support"
	default n
	---help---
		If RTC_DATETIME not selected, then the simple, battery backed counter
		is used.  There are two different implementations of such simple
		counters based on the time resolution of the counter: The typical RTC
		keeps time to resolution of 1 second, usually supporting a 32-bit
		time_t value.  In this case, the RTC is used to "seed" the normal NuttX
		timer and the NuttX timer provides for higherresoution time.

		If RTC_HIRES is enabled in the NuttX configuration, then the RTC
		provides higher resolution time and completely replaces the system
		timer for purpose of date and time.

config RTC_FREQUENCY
	int "Hi-Res RTC frequency"
	default 1
	depends on RTC_HIRES
	---help---
		If RTC_HIRES is defined, then the frequency of the high resolution RTC
		must be provided.  If RTC_HIRES is not defined, RTC_FREQUENCY is
		assumed to be one Hz.

endif # !RTC_DATETIME

config RTC_ALARM
	bool "RTC Alarm Support"
	default n
	---help---
		Enable if the RTC hardware supports setting of an alarm.  A callback
		function will be executed when the alarm goes off.

config RTC_NALARMS
	int "Number of alarms"
	default 1
	depends on RTC_ALARM
	---help---
		Number of alarms supported by the hardware.

config RTC_DRIVER
	bool "RTC Driver Support"
	default n
	---help---
		This selection enables building of the "upper-half" RTC
		driver. See include/nuttx/timers/rtc.h for further RTC driver
		information.

if RTC_DRIVER

config RTC_ARCH
	bool "RTC Arch Implementation"
	default n
	---help---
		Implement RTC arch API on top of RTC driver interface.

config RTC_PERIODIC
	bool "RTC Periodic Interrupts"
	default n
	---help---
		Add interrupt controls for RTCs that support periodic interrupts.

config RTC_IOCTL
	bool "RTC IOCTLs"
	default n
	---help---
		Support the RTC interface ioctl() method.  This allows you to add
		architecture-specific RTC operations to the RTC interface

endif # RTC_DRIVER

config RTC_EXTERNAL
	bool "External RTC Support"
	default n
	---help---
		In modern MCUs, the RTC is usually implement as an internal
		peripheral to the MCU.  An option is to use an external RTC
		connected to the MCU typically via SPI or I2C.

		If an external RTC is connect to the MCU through some bus, then the
		RTC will not be available to the system until after the system
		fully boots up and is able to access the bus.  In that case, this
		setting must be included to suppress attempts to initialize the RTC
		early in the boot sequence.

config RTC_DSXXXX
	bool "DS130x/DS323x RTC Driver"
	default n
	select I2C
	select RTC_DATETIME
	depends on RTC_EXTERNAL
	---help---
		Enables support for the Maxim Integrated DS3231 I2C RTC timer.

if RTC_DSXXXX

choice
	prompt "Maxim Integrated RTC"
	default RTC_DS3231

config RTC_DS1302
	bool "DS1302"
	---help---
		Enables support for the Maxim Integrated DS1302 serial RTC timer.

config RTC_DS1307
	bool "DS1307"
	---help---
		Enables support for the Maxim Integrated DS1307 I2C RTC timer.

config RTC_DS3231
	bool "DS3231"
	---help---
		Enables support for the Maxim Integrated DS3231 I2C RTC timer.

config RTC_DS3232
	bool "DS3232"
	---help---
		Enables support for the Maxim Integrated DS3232 I2C RTC timer.

config RTC_DS3234
	bool "DS3234"
	depends on EXPERIMENTAL
	---help---
		Enables support for the Maxim Integrated DS3234 SPI RTC timer.

		Not yet implemented.

endchoice # Maxim Integrated RTC

config DS3231_I2C_FREQUENCY
	int "DS1307/DS323x I2C frequency"
	default 400000
	range 1 400000

endif # RTC_DSXXXX

config RTC_PCF85263
	bool "PCF85263 RTC Driver"
	default n
	select I2C
	select RTC_DATETIME
	depends on RTC_EXTERNAL
	---help---
		Enables support for the NXP PCF85263 I2C RTC timer.

if RTC_PCF85263

config PCF85263_I2C_FREQUENCY
	int "PCF85263 I2C frequency"
	default 400000
	range 1 400000

endif # RTC_PCF85263

config RTC_MCP794XX
	bool "MCP794XX RTC Driver"
	default n
	select I2C
	select RTC_DATETIME
	depends on RTC_EXTERNAL
	---help---
		Enables support for the Microchip MCP794XX I2C RTC timer.

if RTC_MCP794XX

config MCP794XX_I2C_FREQUENCY
	int "MCP794XX I2C frequency"
	default 400000
	range 1 400000

endif # RTC_MCP794XX

config RTC_RPMSG
	bool "Rpmsg RTC Driver"
	default n
	depends on OPENAMP
	depends on RTC_EXTERNAL
	select ARCH_HAVE_RTC_SUBSECONDS

endif # RTC

menuconfig WATCHDOG
	bool "Watchdog Timer Support"
	default n
	---help---
		This selection enables building of the "upper-half" watchdog timer
		driver. See include/nuttx/timers/watchdog.h for further watchdog timer driver
		information.

if WATCHDOG

config WATCHDOG_DEVPATH
	string "Watchdog Device Path"
	default "/dev/watchdog0"

config WATCHDOG_AUTOMONITOR
	bool "Auto-monitor"
	---help---
		The auto-monitor provides an OS-internal mechanism for automatically
		start and repeatly reset the counting after the watchdog is register.

if WATCHDOG_AUTOMONITOR

config WATCHDOG_AUTOMONITOR_TIMEOUT
	int "Auto-monitor reset timeout(second)"
	default 60

choice
	prompt "Auto-monitor keepalive by"
	default WATCHDOG_AUTOMONITOR_BY_TIMER

config WATCHDOG_AUTOMONITOR_BY_CAPTURE
	bool "Capture callback"

config WATCHDOG_AUTOMONITOR_BY_TIMER
	bool "Timer callback"

config WATCHDOG_AUTOMONITOR_BY_WORKER
	bool "Worker callback"
	depends on SCHED_WORKQUEUE

config WATCHDOG_AUTOMONITOR_BY_IDLE
	bool "Idle callback"
	depends on PM

endchoice

endif # WATCHDOG_AUTOMONITOR

endif # WATCHDOG

config TIMERS_CS2100CP
	bool "CS2100-CP Fraction-N Clock Multiplier"
	depends on I2C

if TIMERS_CS2100CP

config CS2100CP_DEBUG
	bool "Enable CS2100-CP Debug Features"
	depends on DEBUG_FEATURES

config CS2100CP_REGDEBUG
	bool "Enable CS2100-CP Register Debug"
	depends on DEBUG_FEATURES

endif # TIMERS_CS2100CP
endmenu  # Timer Driver Support