Find a file
Ren Chen 765a4eb0b8 drivers: timer: it8xxx2: enhances the accuracy of hw cycle calculation
This commit enhances the accuracy of hardware cycle calculation before
setting the IT8xxx2 event timer. The next target cycle is calculated by
the last, elapsed, and expected timeout ticks. And then, the difference
in hardware cycles between the target cycle and the current cycle is set
into the event timer. This increased accuracy effectively resolves the
clock drift issue.

Tested with:
west build -p always -b it8xxx2_evb tests/kernel/timer/timer_api
     -T kernel.timer.tickless
west build -p always -b it8xxx2_evb tests/kernel/timer/timer_behavior
     -T kernel.timer.timer

Fixes #67474 #67833

Signed-off-by: Ruibin Chang <Ruibin.Chang@ite.com.tw>
Signed-off-by: Ren Chen <Ren.Chen@ite.com.tw>
2024-03-15 17:11:33 -04:00
.github ci: bsim update step: Do not affect global git config 2024-03-15 15:30:19 +01:00
arch arch/posix cmake: Replace native_posix w native_sim and use hwmv2 names 2024-03-15 16:13:12 +01:00
boards nrf53_bsim: Enable CodedPhy support in DTS 2024-03-15 13:55:27 -05:00
cmake cmake: sca: codechecker: Allow processing results even on errors 2024-03-11 10:39:48 -04:00
doc docs/Kconfig help: Replace native_[posix,sim]_64 2024-03-15 16:13:12 +01:00
drivers drivers: timer: it8xxx2: enhances the accuracy of hw cycle calculation 2024-03-15 17:11:33 -04:00
dts dts: i2c: kb1200 i2c device nodes 2024-03-15 09:39:48 +00:00
include/zephyr llext: symbol.h: Explicit typecast in EXPORT_SYMBOL macros 2024-03-15 13:07:48 +01:00
kernel sched: Remove multi-level queue priority limit 2024-03-12 19:37:40 -04:00
lib lib: posix: shell: Fix compiler warning of lib__posix__shell 2024-03-15 06:30:31 -04:00
misc cmake: modules: dts: use devicetree stub file 2023-10-20 12:18:17 -07:00
modules modules: hal_nordic: nrfx: include config for nrf54l15 2024-03-15 06:26:44 -04:00
samples samples: tfm_integration: lpc55s69: enable tfm samples 2024-03-15 10:33:46 -05:00
scripts twister: qemu: Fix device tests skipped when QEMU not installed 2024-03-15 06:29:05 -04:00
share boards/Kconfig: $BOARD_REVISION -> $(BOARD_REVISION) 2024-03-13 08:38:07 +01:00
snippets snippets: nordic-ppr-ram: fix board identifier 2024-03-04 17:03:47 +01:00
soc nxp: imx8ulp: correct value of CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC 2024-03-15 06:27:13 -04:00
submanifests hwmv2: Introduce Hardware model version 2 and convert devices 2024-03-02 16:56:33 -05:00
subsys Bluetooth: Controller: Add coded phy radio timings for nrf52_bsim 2024-03-15 13:55:27 -05:00
tests tests: sprintf: Avoid buffer overrun 2024-03-15 17:08:58 -04:00
.checkpatch.conf checkpatch: Remove ext/ from excludes 2022-11-30 12:06:55 -05:00
.clang-format Build System: clang-format: add K_SPINLOCK to FOR_EACH 2023-12-26 19:36:01 +00:00
.codecov.yml yamllint: fix all yamllint comments errors 2023-01-04 01:16:45 +09:00
.editorconfig editorconfig: Improve verbosity 2022-04-28 08:55:39 -04:00
.gitattributes gitattributes: consider SVG files generated 2021-10-14 12:42:44 -04:00
.gitignore hwmv2: Introduce Hardware model version 2 and convert devices 2024-03-02 16:56:33 -05:00
.gitlint .gitlint: de-duplicate defaults with zephyr_commit_rules.py 2023-09-21 09:29:24 +02:00
.mailmap mailmap: sort alphabetically 2023-05-15 13:23:32 -04:00
.yamllint scripts: compliance: add support for YAMLLint 2023-01-04 17:29:23 +01:00
CMakeLists.txt logging: Add option to not generate dictionary database always 2024-03-06 10:38:37 +00:00
CODE_OF_CONDUCT.md coc: Update Code of Conduct to latest Contributor Covenant 2023-12-21 09:38:23 +00:00
CODEOWNERS doc: CODEOWNERS 2024-03-15 09:39:48 +00:00
CONTRIBUTING.rst
Kconfig
Kconfig.zephyr hwmv2: Introduce Hardware model version 2 and convert devices 2024-03-02 16:56:33 -05:00
LICENSE
MAINTAINERS.yml MAINTAINERS: Add myself to hawkbit as a collaborator 2024-03-15 06:27:31 -04:00
README.rst doc: README: Rework Resources section 2023-10-17 19:05:20 +03:00
SDK_VERSION SDK_VERSION: Use Zephyr SDK 0.16.5-1 2024-03-12 08:54:42 -04:00
VERSION release: Zephyr v3.6.99 2024-02-23 22:28:57 -06:00
version.h.in version: cmake: kconfig: introduce extra <type>_VERSION_<x>_STRING 2024-02-01 10:28:43 +00:00
west.yml manifest: Update nRF hw models to latest 2024-03-15 13:55:27 -05:00
zephyr-env.cmd
zephyr-env.sh everywhere: fix typos 2022-03-18 13:24:08 -04:00

.. raw:: html

   <a href="https://www.zephyrproject.org">
     <p align="center">
       <picture>
         <source media="(prefers-color-scheme: dark)" srcset="doc/_static/images/logo-readme-dark.svg">
         <source media="(prefers-color-scheme: light)" srcset="doc/_static/images/logo-readme-light.svg">
         <img src="doc/_static/images/logo-readme-light.svg">
       </picture>
     </p>
   </a>

   <a href="https://bestpractices.coreinfrastructure.org/projects/74"><img
   src="https://bestpractices.coreinfrastructure.org/projects/74/badge"></a>
   <a
   href="https://github.com/zephyrproject-rtos/zephyr/actions/workflows/twister.yaml?query=branch%3Amain">
   <img
   src="https://github.com/zephyrproject-rtos/zephyr/actions/workflows/twister.yaml/badge.svg?event=push"></a>


The Zephyr Project is a scalable real-time operating system (RTOS) supporting
multiple hardware architectures, optimized for resource constrained devices,
and built with security in mind.

The Zephyr OS is based on a small-footprint kernel designed for use on
resource-constrained systems: from simple embedded environmental sensors and
LED wearables to sophisticated smart watches and IoT wireless gateways.

The Zephyr kernel supports multiple architectures, including ARM (Cortex-A,
Cortex-R, Cortex-M), Intel x86, ARC, Nios II, Tensilica Xtensa, and RISC-V,
SPARC, MIPS, and a large number of `supported boards`_.

.. below included in doc/introduction/introduction.rst


Getting Started
***************

Welcome to Zephyr! See the `Introduction to Zephyr`_ for a high-level overview,
and the documentation's `Getting Started Guide`_ to start developing.

.. start_include_here

Community Support
*****************

Community support is provided via mailing lists and Discord; see the Resources
below for details.

.. _project-resources:

Resources
*********

Here's a quick summary of resources to help you find your way around:

Getting Started
---------------

  | 📖 `Zephyr Documentation`_
  | 🚀 `Getting Started Guide`_
  | 🙋🏽 `Tips when asking for help`_
  | 💻 `Code samples`_

Code and Development
--------------------

  | 🌐 `Source Code Repository`_
  | 📦 `Releases`_
  | 🤝 `Contribution Guide`_

Community and Support
---------------------

  | 💬 `Discord Server`_ for real-time community discussions
  | 📧 `User mailing list (users@lists.zephyrproject.org)`_
  | 📧 `Developer mailing list (devel@lists.zephyrproject.org)`_
  | 📬 `Other project mailing lists`_
  | 📚 `Project Wiki`_

Issue Tracking and Security
---------------------------

  | 🐛 `GitHub Issues`_
  | 🔒 `Security documentation`_
  | 🛡️ `Security Advisories Repository`_
  | ⚠️ Report security vulnerabilities at vulnerabilities@zephyrproject.org

Additional Resources
--------------------
  | 🌐 `Zephyr Project Website`_
  | 📺 `Zephyr Tech Talks`_

.. _Zephyr Project Website: https://www.zephyrproject.org
.. _Discord Server: https://chat.zephyrproject.org
.. _supported boards: https://docs.zephyrproject.org/latest/boards/index.html
.. _Zephyr Documentation: https://docs.zephyrproject.org
.. _Introduction to Zephyr: https://docs.zephyrproject.org/latest/introduction/index.html
.. _Getting Started Guide: https://docs.zephyrproject.org/latest/develop/getting_started/index.html
.. _Contribution Guide: https://docs.zephyrproject.org/latest/contribute/index.html
.. _Source Code Repository: https://github.com/zephyrproject-rtos/zephyr
.. _GitHub Issues: https://github.com/zephyrproject-rtos/zephyr/issues
.. _Releases: https://github.com/zephyrproject-rtos/zephyr/releases
.. _Project Wiki: https://github.com/zephyrproject-rtos/zephyr/wiki
.. _User mailing list (users@lists.zephyrproject.org): https://lists.zephyrproject.org/g/users
.. _Developer mailing list (devel@lists.zephyrproject.org): https://lists.zephyrproject.org/g/devel
.. _Other project mailing lists: https://lists.zephyrproject.org/g/main/subgroups
.. _Code samples: https://docs.zephyrproject.org/latest/samples/index.html
.. _Security documentation: https://docs.zephyrproject.org/latest/security/index.html
.. _Security Advisories Repository: https://github.com/zephyrproject-rtos/zephyr/security
.. _Tips when asking for help: https://docs.zephyrproject.org/latest/develop/getting_started/index.html#asking-for-help
.. _Zephyr Tech Talks: https://www.zephyrproject.org/tech-talks