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Erwan Gouriou 7f2cb0fd22 drivers: timer: stm32: Specific handling for L0 LSI
On L0 series, LSI runs at 37KHz while LPTIM driver only supports speeds
up to 32768Hz (to avoid counter overflow). Consequence is a time running
faster than reality (x1.13)
Solution to this is the implementation of the LPTIM prescaler support.

While moving driver configuration from Kconfig to DT, this case was
not taken into account and the effect was LPTIM counter overflow which
consequence is worse than the slightly faster timer.
Reproduce the initial behavior with this piece of code that will be
removed once prescaler support is available.

Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
2022-09-02 10:41:59 +00:00
.github twister: Remove import exception handler for psutil 2022-09-01 06:22:04 -04:00
arch arch: arm64: core: smp: use DT_FOREACH_CHILD_STATUS_OKAY_SEP 2022-08-30 16:19:57 +02:00
boards drivers: timer: stm32: Adapt SYS_CLOCK_TICKS_PER_SEC 2022-09-02 10:41:59 +00:00
cmake cmake: locate Zephyr SDK before locating other host tools. 2022-09-02 19:41:15 +09:00
doc scripts: gen_defines: Add vendor name macros based on vendor prefixes 2022-09-01 14:53:55 -07:00
drivers drivers: timer: stm32: Specific handling for L0 LSI 2022-09-02 10:41:59 +00:00
dts eSPI: npcx: Enable platform specific Virtual Wire GPIOs 2022-09-02 10:36:24 +00:00
include/zephyr eSPI: npcx: Enable platform specific Virtual Wire GPIOs 2022-09-02 10:36:24 +00:00
kernel tracing: ctf: add timer support 2022-08-31 16:04:01 -04:00
lib lib: os: cbprintf: Renamed flags used for conversion function 2022-08-26 12:52:08 +02:00
misc misc: generated: update configs.c template with <zephyr/...> prefix 2022-05-09 12:45:29 -04:00
modules modules: Added hal_wurthelektronik module. 2022-08-31 21:47:58 +00:00
samples modbus: add user data for adu callback 2022-09-02 10:51:57 +02:00
scripts scripts: gen_defines: Add vendor name macros based on vendor prefixes 2022-09-01 14:53:55 -07:00
share cmake: sysbuild: signing support 2022-08-03 16:05:07 +02:00
soc drivers/timer: stm32: Enable lptim driver based on dt status 2022-09-02 10:41:59 +00:00
submanifests
subsys mgmt: mcumgr: Fix ARRAY_SIZE build warning 2022-09-02 19:11:02 +09:00
tests drivers: uc81xx: Add a separate partial refresh profile 2022-09-02 11:21:08 +02:00
.checkpatch.conf checkpatch: Ignore IS_ENABLED_CONFIG warnings 2021-10-18 08:28:01 -04:00
.clang-format clang-format: do not merge blocks/functions into single line 2022-07-15 19:18:28 -04:00
.codecov.yml
.editorconfig editorconfig: Improve verbosity 2022-04-28 08:55:39 -04:00
.gitattributes
.gitignore .gitignore: exempt scripts/build from ignore 2022-07-30 08:29:29 -05:00
.gitlint gitlint: Stop ignoring merge, revert, fixup and squash commits 2022-01-10 08:13:36 -05:00
.mailmap
CMakeLists.txt cmake: move testing of compile flag in environment to top CMakeLists.txt 2022-09-01 15:59:43 +02:00
CODE_OF_CONDUCT.md
CODEOWNERS codeowners: Add code owner for Cadence QSPI NOR Flash Driver 2022-09-01 14:30:59 -04:00
CONTRIBUTING.rst
Kconfig
Kconfig.zephyr blobs: Introduce TAINT and TAINT_BLOBS Kconfig options 2022-08-29 15:57:59 +02:00
LICENSE
MAINTAINERS.yml MAINTAINERS: remove the inactive maintainer 2022-09-01 13:08:53 -04:00
README.rst readme: Update stale documentation links 2022-06-06 12:07:12 +02:00
VERSION version: Fix the EXTRAVERSION field 2022-06-05 20:11:17 +02:00
version.h.in cmake: version.h generation performed at build time 2022-02-08 07:50:24 -05:00
west.yml west.yml: update hal to v4.4.1 base 2022-09-01 21:48:18 +00:00
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">
       <img src="doc/_static/images/logo-readme.svg">
     </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:

* **Help**: `Asking for Help Tips`_
* **Documentation**: http://docs.zephyrproject.org (`Getting Started Guide`_)
* **Source Code**: https://github.com/zephyrproject-rtos/zephyr is the main
  repository; https://elixir.bootlin.com/zephyr/latest/source contains a
  searchable index
* **Releases**: https://github.com/zephyrproject-rtos/zephyr/releases
* **Samples and example code**: see `Sample and Demo Code Examples`_
* **Mailing Lists**: users@lists.zephyrproject.org and
  devel@lists.zephyrproject.org are the main user and developer mailing lists,
  respectively. You can join the developer's list and search its archives at
  `Zephyr Development mailing list`_. The other `Zephyr mailing list
  subgroups`_ have their own archives and sign-up pages.
* **Nightly CI Build Status**: https://lists.zephyrproject.org/g/builds
  The builds@lists.zephyrproject.org mailing list archives the CI nightly build results.
* **Chat**: Real-time chat happens in Zephyr's Discord Server. Use
  this `Discord Invite`_ to register.
* **Contributing**: see the `Contribution Guide`_
* **Wiki**: `Zephyr GitHub wiki`_
* **Issues**: https://github.com/zephyrproject-rtos/zephyr/issues
* **Security Issues**: Email vulnerabilities@zephyrproject.org to report
  security issues; also see our `Security`_ documentation. Security issues are
  tracked separately at https://zephyrprojectsec.atlassian.net.
* **Zephyr Project Website**: https://zephyrproject.org

.. _Discord Invite: https://chat.zephyrproject.org
.. _supported boards: http://docs.zephyrproject.org/latest/boards/index.html
.. _Zephyr Documentation: http://docs.zephyrproject.org
.. _Introduction to Zephyr: http://docs.zephyrproject.org/latest/introduction/index.html
.. _Getting Started Guide: http://docs.zephyrproject.org/latest/develop/getting_started/index.html
.. _Contribution Guide: http://docs.zephyrproject.org/latest/contribute/index.html
.. _Zephyr GitHub wiki: https://github.com/zephyrproject-rtos/zephyr/wiki
.. _Zephyr Development mailing list: https://lists.zephyrproject.org/g/devel
.. _Zephyr mailing list subgroups: https://lists.zephyrproject.org/g/main/subgroups
.. _Sample and Demo Code Examples: http://docs.zephyrproject.org/latest/samples/index.html
.. _Security: http://docs.zephyrproject.org/latest/security/index.html
.. _Asking for Help Tips: https://docs.zephyrproject.org/latest/develop/getting_started/index.html#asking-for-help