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Nicolas Pitre f7c4fe6778 shell: optimize history storage a bit
When padding is added to "fill" the gap in order to wrap to the
beginning of the ring buffer, such padding is attributed to the
current item being added. Let's attribute it to the previous entry
instead so it'll be freed along with that entry and make the space
available one entry sooner, increasing the chances for keeping the
current entry around longer.

If ring buffer is empty then always reset it up front to get best
alignment right away i.e. beginning of buffer.

Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
2022-03-14 11:33:17 +01:00
.github ci: errno: check the workflow when changed 2022-03-08 11:29:40 +01:00
arch board: arm64: fvp_baser_aemv8r: Fix misc SMP issues 2022-03-11 11:00:05 +01:00
boards nxp: imx: support i.MX8MP EVK board 2022-03-14 11:28:35 +01:00
cmake cmake: fix out of tree hal build fail 2022-03-11 15:46:54 -08:00
doc doc: reference: misc: Update cbprintf documentation 2022-03-14 11:16:14 +01:00
drivers drivers: i2c: sam0: Implement bus locking 2022-03-14 11:31:32 +01:00
dts dts: arm: st: f1: remove AFIOEN bit from IO clocks 2022-03-14 11:29:21 +01:00
include lib: os: cbprintf: Extend API to support new packaging modes 2022-03-14 11:16:14 +01:00
kernel kernel: use DEVICE_DT_GET_OR_NULL for entropy device 2022-03-11 15:27:05 -08:00
lib lib: os: cbprintf: Extend API to support new packaging modes 2022-03-14 11:16:14 +01:00
misc cmake: only write devicetree files when there are changes. 2022-02-11 15:47:09 +01:00
modules modules: hal_nordic: obtain entropy device using DEVICE_DT_GET 2022-03-11 15:27:05 -08:00
samples samples/boards/nrf/system_off: Fix configuration of the wake up button 2022-03-14 11:28:15 +01:00
scripts Revert "twister: passing the build dir to device serial pty" 2022-03-11 17:57:04 -05:00
share cmake: function to update Zephyr_DIR when loading old Zephyr packages 2022-03-07 16:35:54 +01:00
soc nxp: imx: support i.MX8MP EVK board 2022-03-14 11:28:35 +01:00
submanifests west.yml: allow users to easily add more modules 2021-10-07 13:45:42 +02:00
subsys shell: optimize history storage a bit 2022-03-14 11:33:17 +01:00
tests tests: drivers: can: timing: convert to the new ztest framework 2022-03-14 11:29:30 +01:00
.checkpatch.conf checkpatch: Ignore IS_ENABLED_CONFIG warnings 2021-10-18 08:28:01 -04:00
.clang-format
.codecov.yml
.editorconfig
.gitattributes gitattributes: consider SVG files generated 2021-10-14 12:42:44 -04:00
.gitignore gitignore: ignore macos DS_Store files 2021-11-03 16:14:20 -04:00
.gitlint gitlint: Stop ignoring merge, revert, fixup and squash commits 2022-01-10 08:13:36 -05:00
.mailmap
.uncrustify.cfg uncrustify: force a single EOF newline 2021-11-03 16:14:20 -04:00
CMakeLists.txt libc: Add newlib math library to libc partition 2022-03-11 11:35:13 -08:00
CODE_OF_CONDUCT.md
CODEOWNERS nxp: imx: support i.MX8MP EVK board 2022-03-14 11:28:35 +01:00
CONTRIBUTING.rst
Kconfig
Kconfig.zephyr kconfig: tweak Kconfig prompts 2022-03-09 15:35:54 +01:00
LICENSE
MAINTAINERS.yml maintainers: adding erbr-ot to bluetooth/controller 2022-03-09 08:56:35 -06:00
README.rst readme: make README logo dark-mode aware 2022-02-15 19:47:48 +01:00
VERSION VERSION: bump patchlevel to 99 2022-02-21 19:05:46 -05:00
version.h.in cmake: version.h generation performed at build time 2022-02-08 07:50:24 -05:00
west.yml modules: hal_gigadevice: fix GD32_REMAP_MSK error. 2022-03-08 09:18:25 -06:00
zephyr-env.cmd
zephyr-env.sh

.. 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-M,
Intel x86, ARC, Nios II, Tensilica Xtensa, and RISC-V, 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/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/getting_started/index.html#asking-for-help