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Steve Boylan d0aced304b drivers: spi: RPi Pico PIO SPI code size and byte order.
Use minimized PIO code for 3-wire operation.

Input and output buffers are conventionally stored in bus byte order.
For 16 and 32 bit transfers, this is effectively big-endian, so
txbuf and rxbuf need to be read as such.  Those pointers also need
to be declared uint8_t * instead of void *.
In addition, tx_count and rx_count are based on dts, and refer to
whole transfers (8, 16, or 32 bits), not bytes.

Added rpi_pico.overlay to samples/sensor/magn_polling to demonstrate
32-bit word size, and updated the README.rst to make it independent
of the specific sensor.

Clean up compliance check failures.
Fix typos.
Synchronize 3-wire TX and RX cycles.
Simplify state machine synchronization
Minimize SPI bus delay time in 3-wire mode
Move clock delay to PIO code and remove k_sleep

Signed-off-by: Steve Boylan <stephen.boylan@beechwoods.com>
2024-11-16 14:00:16 -05:00
.github actions: manifest: check additional metadata in projects 2024-11-16 13:28:58 -05:00
arch arch: riscv: smp: allow other IPI implementation 2024-11-16 13:34:10 -05:00
boards boards: adafruit: add initial support for feather m4 express 2024-11-16 13:51:45 -05:00
cmake cmake: extensions: use INTERFACE_SOURCES as property for code relocation 2024-11-16 13:35:36 -05:00
doc drivers: w1: updates to reflect analog maxim acquisition 2024-11-16 13:51:38 -05:00
drivers drivers: spi: RPi Pico PIO SPI code size and byte order. 2024-11-16 14:00:16 -05:00
dts soc: Fix missing mem.h include in stm32h562 2024-11-16 13:37:52 -05:00
include/zephyr drivers: w1: updates to reflect analog maxim acquisition 2024-11-16 13:51:38 -05:00
kernel arch: common: fix copy for ramfunc region during XIP init 2024-11-06 10:19:08 -08:00
lib libc/picolibc: Split hooks into separate files 2024-11-16 13:50:16 -05:00
misc
modules lvgl: add frame_incomplete information to display_write 2024-11-16 13:35:17 -05:00
samples drivers: spi: RPi Pico PIO SPI code size and byte order. 2024-11-16 14:00:16 -05:00
scripts build: support newlines in syscall decls 2024-11-16 13:43:51 -05:00
share sysbuild: Add missing option for MCUboot encryption support 2024-10-30 08:54:33 -05:00
snippets snippets: Add snippet for the Zephyr Bluetooth Controller 2024-10-25 12:52:33 -05:00
soc Documentation: Update documenation for Infineon boards 2024-11-14 20:36:38 -06:00
submanifests submanifests: optional: rust: Limit build targets 2024-11-13 13:36:17 -06:00
subsys net: shell: dns: Print DNS server with network interface 2024-11-16 13:51:27 -05:00
tests net: utils: Port parsing failure in net_ipaddr_parse() 2024-11-16 13:51:27 -05:00
.checkpatch.conf
.clang-format clang-format: add entry for SYS_SEM_LOCK() 2024-10-03 17:07:05 +01:00
.codechecker.yml tests: Add a CodeChecker config file 2024-09-12 10:04:05 +02:00
.codecov.yml
.editorconfig
.gitattributes
.gitignore scripts: ci: check_compliance: Add text encoding check 2024-10-17 10:49:08 -04:00
.gitlint
.mailmap mailmap: missing entry for Manuel Argüelles 2024-08-05 18:36:50 -04:00
.yamllint
CMakeLists.txt cmake: use CMake variable KERNEL_VERSION_CUSTOMIZATION for default value 2024-11-05 10:53:49 -06:00
CODE_OF_CONDUCT.md
CODEOWNERS CODEOWNERS: Updated coder owners file 2024-09-05 17:03:05 -04:00
CONTRIBUTING.rst
Kconfig
Kconfig.constants kconfig: Add variables for integer constants 2024-07-27 20:49:15 +03:00
Kconfig.zephyr linker: lto: Remove experimental label 2024-10-30 08:55:06 -05:00
LICENSE
MAINTAINERS.yml MAINTAINERS: Add Bjarki as pm co-maintainer 2024-11-14 20:36:21 -06:00
README.rst README: drop the stray link underscores between badges 2024-09-26 15:20:39 +01:00
SDK_VERSION SDK_VERSION: Use Zephyr SDK 0.17.0 2024-10-22 19:04:37 -04:00
VERSION release: Zephyr v4.0.99 2024-11-16 13:40:34 +01:00
version.h.in
west.yml west.yml: Update zcbor from 0.9.0 to 0.9.1 2024-11-16 13:52:08 -05:00
zephyr-env.cmd
zephyr-env.sh

.. 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://scorecard.dev/viewer/?uri=github.com/zephyrproject-rtos/zephyr"><img src="https://api.securityscorecards.dev/projects/github.com/zephyrproject-rtos/zephyr/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