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158 lines
4.3 KiB
Plaintext
158 lines
4.3 KiB
Plaintext
# Copyright (c) 2021 HAW Hamburg
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#
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# This file is subject to the terms and conditions of the GNU Lesser
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# General Public License v2.1. See the file LICENSE in the top level
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# directory for more details.
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#
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menuconfig MODULE_ZTIMER
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bool "ztimer - High level timer abstraction layer"
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depends on TEST_KCONFIG
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select MODULE_ZTIMER_CORE
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select MODULE_ZTIMER_CONVERT_FRAC
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select MODULE_ZTIMER_CONVERT_SHIFT
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select MODULE_ZTIMER_EXTEND
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if MODULE_ZTIMER
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menu "Backends"
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config MODULE_ZTIMER_PERIPH_RTC
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bool "RTC peripheral"
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depends on HAS_PERIPH_RTC
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select MODULE_PERIPH_RTC
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config MODULE_ZTIMER_PERIPH_RTT
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bool "RTT peripheral"
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depends on HAS_PERIPH_RTT
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select MODULE_PERIPH_RTT
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default y if !MODULE_ZTIMER_PERIPH_TIMER
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config MODULE_ZTIMER_PERIPH_PTP
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bool "PTP peripheral"
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depends on HAS_PERIPH_PTP_TIMER
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select MODULE_PERIPH_PTP_TIMER
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config MODULE_ZTIMER_PERIPH_TIMER
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bool "Timer peripheral"
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depends on HAS_PERIPH_TIMER
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select MODULE_PERIPH_TIMER
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default y
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endmenu # Backends
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menu "Clocks"
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config MODULE_ZTIMER_USEC
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bool "Microseconds"
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depends on MODULE_ZTIMER_PERIPH_TIMER
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config MODULE_ZTIMER_MSEC
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bool "Milliseconds"
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depends on MODULE_ZTIMER_PERIPH_TIMER || MODULE_ZTIMER_PERIPH_RTT
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config MODULE_ZTIMER_SEC
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bool "Seconds"
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depends on MODULE_ZTIMER_PERIPH_TIMER || MODULE_ZTIMER_PERIPH_RTT || MODULE_ZTIMER_PERIPH_RTC
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endmenu # Clocks
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menu "Frequency conversion"
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config MODULE_ZTIMER_CONVERT_MULDIV64
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bool "64-bits arithmetic conversion"
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select MODULE_ZTIMER_CONVERT
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help
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muldiv64 is very precise, but the overhead is the highest. On MCUs
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without hardware division this might not be a good choice.
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config MODULE_ZTIMER_CONVERT_FRAC
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bool "Fractional conversion"
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select MODULE_ZTIMER_CONVERT
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select MODULE_FRAC
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help
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Frac can be used for arbitrary frequency conversions, but trades in
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precision to gain speed. In cases where shift conversion cannot be used,
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this is likely the best trade off.
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config MODULE_ZTIMER_CONVERT_SHIFT
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bool "Shift conversion"
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select MODULE_ZTIMER_CONVERT
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help
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Shift conversion is both fast and super precise, but cannot work for
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arbitrary frequencies. It's kind of a software prescaler for the
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underlying clock. So if the hardware clock frequency and the target
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clock frequency differ by a factor that is a power of two, this is the
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best choice - otherwise it is simply not usable.
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config MODULE_ZTIMER_CONVERT
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bool
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endmenu # Frequency conversion
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menu "xtimer and evtimer compatibility"
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choice
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bool "xtimer compatibility"
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optional
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depends on MODULE_ZTIMER_USEC
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config MODULE_XTIMER_ON_ZTIMER
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bool "ztimer_usec as timer backend for xtimer"
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config MODULE_ZTIMER_XTIMER_COMPAT
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bool "map xtimer calls to ztimer"
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select MODULE_DIV
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help
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This is a wrapper of xtimer API on ztimer_usec and is currently
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incomplete. Unless doing testing, use xtimer on ztimer.
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endchoice
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comment "The ztimer xtimer compatibility module is incomplete, consider using MODULE_XTIMER_ON_ZTIMER instead."
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depends on MODULE_ZTIMER_XTIMER_COMPAT
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config MODULE_EVTIMER_ON_ZTIMER
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bool "Use ztimer_msec as timer backend for evtimer"
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depends on MODULE_ZTIMER_MSEC
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select MODULE_ZTIMER_NOW64
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endmenu # xtimer compatibility
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# TODO: only use MODULE_ZTIMER_AUTO_INIT, for now we try to get the same modules
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# as the Makefile dependency resolution. See sys/ztimer/Makefile.dep for more
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# info on why two modules are used.
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config MODULE_AUTO_INIT_ZTIMER
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bool "Auto initialize ztimer"
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depends on MODULE_AUTO_INIT
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select MODULE_ZTIMER_AUTO_INIT
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default y
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config MODULE_ZTIMER_NOW64
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bool "Use a 64-bits result for ztimer_now()"
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config MODULE_ZTIMER_OVERHEAD
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bool "Overhead measurement functionalities"
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config MODULE_ZTIMER_MOCK
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bool "Mock backend (for testing only)"
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help
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This ztimer module implements a virtual clock that can be used for
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unittests. It can be manually adjusted to different timestamps and
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manually fired to simulate different scenarios and test the ztimer
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implementation using this as a backing timer.
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config MODULE_ZTIMER_AUTO_INIT
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bool
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config MODULE_ZTIMER_CORE
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bool
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config MODULE_ZTIMER_EXTEND
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bool
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endif # MODULE_ZTIMER
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