| |
| |
| <!DOCTYPE html> |
| <html lang="en"> |
| |
| <head> |
| <meta charset="utf-8"> |
| <meta http-equiv="X-UA-Compatible" content="IE=edge"> |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> |
| |
| |
| |
| |
| <title>Porting Mynewt OS — Apache Mynewt 1.4.0 documentation</title> |
| |
| |
| |
| |
| <link rel="shortcut icon" href="../../../_static/mynewt-logo-only-newt32x32.png" /> |
| |
| |
| |
| |
| <link rel="stylesheet" href="../../../_static/css/theme.css" type="text/css" /> |
| |
| |
| <link rel="stylesheet" href="../../../_static/css/sphinx_theme.css" type="text/css" /> |
| |
| <link rel="stylesheet" href="../../../_static/css/bootstrap-3.0.3.min.css" type="text/css" /> |
| |
| <link rel="stylesheet" href="../../../_static/css/v2.css" type="text/css" /> |
| |
| <link rel="stylesheet" href="../../../_static/css/custom.css" type="text/css" /> |
| |
| <link rel="stylesheet" href="../../../_static/css/restructuredtext.css" type="text/css" /> |
| |
| |
| |
| |
| <link rel="stylesheet" href="../../../_static/css/overrides.css" type="text/css" /> |
| <link rel="index" title="Index" href="../../../genindex.html" /> |
| <link rel="search" title="Search" href="../../../search.html" /> |
| <link rel="top" title="Apache Mynewt 1.4.0 documentation" href="../../../index.html" /> |
| <link rel="up" title="OS User Guide" href="../../os_user_guide.html" /> |
| <link rel="next" title="BSP Porting" href="port_bsp.html" /> |
| <link rel="prev" title="Split Images" href="../../modules/split/split.html" /> |
| |
| |
| <script src="../../../_static/js/modernizr.min.js"></script> |
| |
| |
| <script> |
| (function (i, s, o, g, r, a, m) { |
| i["GoogleAnalyticsObject"] = r; |
| (i[r] = |
| i[r] || |
| function () { |
| (i[r].q = i[r].q || []).push(arguments); |
| }), |
| (i[r].l = 1 * new Date()); |
| (a = s.createElement(o)), (m = s.getElementsByTagName(o)[0]); |
| a.async = 1; |
| a.src = g; |
| m.parentNode.insertBefore(a, m); |
| })(window, document, "script", "//www.google-analytics.com/analytics.js", "ga"); |
| |
| ga("create", "UA-72162311-1", "auto"); |
| ga("send", "pageview"); |
| </script> |
| |
| |
| </head> |
| |
| <body class="not-front page-documentation" role="document"> |
| <div id="wrapper"> |
| <div class="container"> |
| <div id="banner" class="row v2-main-banner"> |
| <a class="logo-cell" href="/"> |
| <img class="logo" src="../../../_static/img/logo.png"> |
| </a> |
| <div class="tagline-cell"> |
| <h4 class="tagline">An OS to build, deploy and securely manage billions of devices</h4> |
| </div> |
| <div class="news-cell"> |
| <div class="well"> |
| <h4>Latest News:</h4> <a href="/download">Apache Mynewt 1.5.0 </a> released (Nov 5, 2018) |
| </div> |
| </div> |
| </div> |
| </div> |
| |
| <header> |
| <nav id="navbar" class="navbar navbar-inverse" role="navigation"> |
| <div class="container"> |
| <!-- Collapsed navigation --> |
| <div class="navbar-header"> |
| <!-- Expander button --> |
| <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse"> |
| <span class="sr-only">Toggle navigation</span> |
| <span class="icon-bar"></span> |
| <span class="icon-bar"></span> |
| <span class="icon-bar"></span> |
| </button> |
| |
| </div> |
| |
| <!-- Expanded navigation --> |
| <div class="navbar-collapse collapse"> |
| <!-- Main navigation --> |
| <ul class="nav navbar-nav navbar-right"> |
| <li> |
| <a href="/"><i class="fa fa-home" style="font-size: larger;"></i></a> |
| </li> |
| <li class="important"> |
| <a href="/quick-start/">Quick Start</a> |
| </li> |
| <li> |
| <a href="/about/">About</a> |
| </li> |
| <li> |
| <a href="/talks/">Talks</a> |
| </li> |
| <li class="active"> |
| <a href="/documentation/">Documentation</a> |
| </li> |
| <li> |
| <a href="/download/">Download</a> |
| </li> |
| <li> |
| <a href="/community/">Community</a> |
| </li> |
| <li> |
| <a href="/events/">Events</a> |
| </li> |
| </ul> |
| |
| <!-- Search, Navigation and Repo links --> |
| <ul class="nav navbar-nav navbar-right"> |
| |
| </ul> |
| </div> |
| </div> |
| </nav> |
| </header> |
| <!-- STARTS MAIN CONTENT --> |
| <div id="main-content"> |
| |
| |
| |
| |
| |
| |
| <div id="breadcrumb"> |
| <div class="container"> |
| <a href="/documentation/">Docs</a> / |
| |
| <a href="../../os_user_guide.html">OS User Guide</a> / |
| |
| Porting Mynewt OS |
| |
| <div class="sourcelink"> |
| <a href="https://github.com/apache/mynewt-core/edit/master/docs/os/core_os/porting/port_os.rst" class="icon icon-github" |
| rel="nofollow"> Edit on GitHub</a> |
| </div> |
| </div> |
| </div> |
| <!-- STARTS CONTAINER --> |
| <div class="container"> |
| <!-- STARTS .content --> |
| <div id="content" class="row"> |
| |
| <!-- STARTS .container-sidebar --> |
| <div class="container-sidebar col-xs-12 col-sm-3"> |
| <div id="docSidebar" class="sticky-container"> |
| <div role="search" class="sphinx-search"> |
| <form id="rtd-search-form" class="wy-form" action="../../../search.html" method="get"> |
| <input type="text" name="q" placeholder="Search documentation" class="search-documentation" /> |
| <input type="hidden" name="check_keywords" value="yes" /> |
| <input type="hidden" name="area" value="default" /> |
| </form> |
| </div> |
| <!-- Note: only works when deployed --> |
| <select class="form-control" onchange="if (this.value) window.location.href=this.value"> |
| <option value="/latest"> |
| Version: latest |
| </option> |
| <option value="/v1_4_0" selected> |
| Version: 1.4.0 |
| </option> |
| <option value="/v1_3_0/os/introduction"> |
| Version: 1.3.0 |
| </option> |
| <option value="/v1_2_0/os/introduction"> |
| Version: 1.2.0 |
| </option> |
| <option value="/v1_1_0/os/introduction"> |
| Version: 1.1.0 |
| </option> |
| <option value="/v1_0_0/os/introduction"> |
| Version: 1.0.0 |
| </option> |
| <option value="/v0_9_0/os/introduction"> |
| Version: 0_9_0 |
| </option> |
| </select> |
| <div class="region region-sidebar"> |
| <div class="docs-menu"> |
| |
| |
| |
| <ul class="current"> |
| <li class="toctree-l1"><a class="reference internal" href="../../../index.html">Introduction</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../get_started/index.html">Setup & Get Started</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../concepts.html">Concepts</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../tutorials/tutorials.html">Tutorials</a></li> |
| <li class="toctree-l1 current"><a class="reference internal" href="../../os_user_guide.html">OS User Guide</a><ul class="current"> |
| <li class="toctree-l2"><a class="reference internal" href="../mynewt_os.html">Kernel</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../modules/system_modules.html">System</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../modules/hal/hal.html">Hardware Abstraction</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../modules/bootloader/bootloader.html">Secure Bootloader</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../modules/split/split.html">Split Images</a></li> |
| <li class="toctree-l2 current"><a class="current reference internal" href="#">Porting Guide</a><ul> |
| <li class="toctree-l3"><a class="reference internal" href="port_bsp.html">BSP Porting</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="port_mcu.html">Porting Mynewt to a new MCU</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="port_cpu.html">Porting Mynewt to a new CPU Architecture</a></li> |
| </ul> |
| </li> |
| <li class="toctree-l2"><a class="reference internal" href="../../modules/baselibc.html">Baselibc</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../modules/drivers/driver.html">Drivers</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../modules/devmgmt/newtmgr.html">Device Management with Newt Manager</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../modules/imgmgr/imgmgr.html">Image Manager</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../modules/sysinitconfig/sysinitconfig.html">Compile-Time Configuration</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../modules/fs/fs.html">File System</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../modules/fcb/fcb.html">Flash Circular Buffer</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../modules/sensor_framework/sensor_framework.html">Sensor Framework</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../modules/testutil/testutil.html">Test Utilities</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../modules/json/json.html">JSON</a></li> |
| </ul> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../network/docs/index.html">BLE User Guide</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../newt/index.html">Newt Tool Guide</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../newtmgr/index.html">Newt Manager Guide</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../mynewt_faq/index.html">Mynewt FAQ</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../misc/index.html">Appendix</a></li> |
| </ul> |
| |
| |
| |
| </div> |
| </div> |
| </div> |
| <!-- ENDS STICKY CONTAINER --> |
| </div> |
| <!-- ENDS .container-sidebar --> |
| |
| <div class="col-xs-12 col-sm-9"> |
| <div class="alert alert-warning"> |
| <p> |
| Version 1.4.0 is not the most recent version of the Apache Mynewt |
| documentation. Click <a href="/latest">here</a> to read the latest |
| version. |
| </p> |
| </div> |
| |
| <div class=""> |
| <div class="rst-content"> |
| <div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article"> |
| <div itemprop="articleBody"> |
| |
| <div class="section" id="porting-mynewt-os"> |
| <h1>Porting Mynewt OS<a class="headerlink" href="#porting-mynewt-os" title="Permalink to this headline">¶</a></h1> |
| <div class="toctree-wrapper compound"> |
| </div> |
| <p>This chapter describes how to adapt the Mynewt OS to different |
| platforms.</p> |
| <div class="contents local topic" id="contents"> |
| <ul class="simple"> |
| <li><a class="reference internal" href="#description" id="id1">Description</a></li> |
| <li><a class="reference internal" href="#board-support-package-bsp-dependency" id="id2">Board Support Package (BSP) Dependency</a></li> |
| <li><a class="reference internal" href="#mcu-dependency" id="id3">MCU Dependency</a></li> |
| <li><a class="reference internal" href="#mcu-hal" id="id4">MCU HAL</a></li> |
| <li><a class="reference internal" href="#cpu-core-dependency" id="id5">CPU Core Dependency</a></li> |
| </ul> |
| </div> |
| <div class="section" id="description"> |
| <h2><a class="toc-backref" href="#id1">Description</a><a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2> |
| <p>The Mynewt OS is a complete multi-tasking environment with scheduler, |
| time control, buffer management, and synchronization objects. it also |
| includes libraries and services like console, command shell, image |
| manager, bootloader, and file systems etc.</p> |
| <p>Thee majority of this software is platform independent and requires no |
| intervention to run on your platform, but some of the components require |
| support from the underlying platform.</p> |
| <p>The platform dependency of these components can fall into several |
| categories:</p> |
| <ul class="simple"> |
| <li><strong>CPU Core Dependencies</strong> – Specific code or configuration to |
| operate the CPU core within your target platform</li> |
| <li><strong>MCU Dependencies</strong> – Specific code or configuration to operate the |
| MCU or SoC within your target platform</li> |
| <li><strong>BSP Dependencies</strong> – Specific code or configuration to accommodate |
| the specific layout and functionality of your target platform</li> |
| </ul> |
| </div> |
| <div class="section" id="board-support-package-bsp-dependency"> |
| <h2><a class="toc-backref" href="#id2">Board Support Package (BSP) Dependency</a><a class="headerlink" href="#board-support-package-bsp-dependency" title="Permalink to this headline">¶</a></h2> |
| <p>With all of the functionality provided by the core, MCU, and MCU HAL |
| (Hardware Abstraction Layer), there are still some things that must be |
| specified for your particular system. This is provided in Mynewt to |
| allow you the flexibility to design for the exact functionality, |
| peripherals and features that you require in your product.</p> |
| <p>In Mynewt, these settings/components are included in a Board Support |
| Package (BSP). The BSP contains the information specific to running |
| Mynewt on a target platform or hardware board. Mynewt supports some |
| common open source hardware as well as the development boards for some |
| common MCUs. These development systems might be enough for you to get |
| your prototype up and running, but when building a product you are |
| likely going to have your own board which is slightly different from |
| those already supported by Mynewt.</p> |
| <p>For example, you might decide on your system that 16 Kilobytes of flash |
| space in one flash device is reserved for a flash file system. Or on |
| your system you may decide that GPIO pin 5 of the MCU is connected to |
| the system LED. Or you may decide that the OS Tick (the underlying time |
| source for the OS) should run slower than the defaults to conserve |
| battery power. These types of behaviors are specified in the BSP.</p> |
| <p>The information provided in the BSP (what you need to specify to get a |
| complete executable) can vary depending on the MCU and its underlying |
| core architecture. For example, some MCUs have dedicated pins for UART, |
| SPI etc, so there is no configuration required in the BSP when using |
| these peripherals. However some MCUs have a pin multiplexor that allows |
| the UART to be mapped to several different pins. For these MCUs, the BSP |
| must specify if and where the UART pins should appear to match the |
| hardware layout of your system.</p> |
| <ul class="simple"> |
| <li>If your BSP is already supported by Mynewt, there is no additional |
| BSP work involved in porting to your platform. You need only to set |
| the <code class="docutils literal notranslate"><span class="pre">bsp</span></code> attribute in your Mynewt target using the <a class="reference internal" href="../../../newt/index.html"><span class="doc">newt command |
| tool</span></a>.</li> |
| <li>If your BSP is not yet supported by Mynewt, you can add support |
| following the instructions on <a class="reference internal" href="port_bsp.html"><span class="doc">BSP Porting</span></a>.</li> |
| </ul> |
| </div> |
| <div class="section" id="mcu-dependency"> |
| <h2><a class="toc-backref" href="#id3">MCU Dependency</a><a class="headerlink" href="#mcu-dependency" title="Permalink to this headline">¶</a></h2> |
| <p>Some OS code depends on the MCU or SoC that the system contains. For |
| example, the MCU may specify the potential memory map of the system - |
| where code and data can reside.</p> |
| <ul class="simple"> |
| <li>If your MCU is already supported by Mynewt, there is no additional |
| MCU work involved in porting to your platform. You need only to set |
| the <code class="docutils literal notranslate"><span class="pre">arch</span></code> attribute in your Mynewt target using the <a class="reference internal" href="../../../newt/index.html"><span class="doc">newt command |
| tool</span></a>.</li> |
| <li>If your MCU is not yet supported by Mynewt, you can add support |
| following the instructions in <a class="reference internal" href="port_mcu.html"><span class="doc">Porting Mynewt to a new MCU</span></a>.</li> |
| </ul> |
| </div> |
| <div class="section" id="mcu-hal"> |
| <h2><a class="toc-backref" href="#id4">MCU HAL</a><a class="headerlink" href="#mcu-hal" title="Permalink to this headline">¶</a></h2> |
| <p>Mynewt’s architecture supports a hardware abstraction layer (HAL) for |
| common on or off-chip MCU peripherals such as GPIO, UARTs, flash memory |
| etc. Even if your MCU is supported for the core OS, you may find that |
| you need to implement the HAL functionality for a new peripheral. For a |
| description of the HAL abstraction and implementation information, see |
| the <a class="reference internal" href="../../modules/hal/hal.html"><span class="doc">HAL API</span></a></p> |
| </div> |
| <div class="section" id="cpu-core-dependency"> |
| <h2><a class="toc-backref" href="#id5">CPU Core Dependency</a><a class="headerlink" href="#cpu-core-dependency" title="Permalink to this headline">¶</a></h2> |
| <p>Some OS code depends on the CPU core that your system is using. For |
| example, a given CPU core has a specific assembly language instruction |
| set, and may require special cross compiler or compiler settings to use |
| the appropriate instruction set.</p> |
| <ul class="simple"> |
| <li>If your CPU architecture is already supported by Mynewt, there is no |
| CPU core work involved in porting to your platform. You need only to |
| set the <code class="docutils literal notranslate"><span class="pre">arch</span></code> and <code class="docutils literal notranslate"><span class="pre">compiler</span></code> attributes in your Mynewt target |
| using the <a class="reference internal" href="../../../newt/index.html"><span class="doc">newt command tool</span></a>.</li> |
| <li>If your CPU architecture is not supported by Mynewt, you can add |
| support following the instructions on <a class="reference internal" href="port_cpu.html"><span class="doc">Porting Mynewt to a new CPU Architecture</span></a>.</li> |
| </ul> |
| </div> |
| </div> |
| |
| |
| </div> |
| </div> |
| |
| <div class="rst-footer-buttons row" role="navigation" aria-label="footer navigation"> |
| |
| <a href="port_bsp.html" class="btn btn-neutral float-right" title="BSP Porting" accesskey="n">Next: BSP Porting <span class="fa fa-arrow-circle-right"></span></a> |
| |
| |
| <a href="../../modules/split/split.html" class="btn btn-neutral" title="Split Images" accesskey="p"><span class="fa fa-arrow-circle-left"></span> Previous: Split Images</a> |
| |
| </div> |
| |
| </div> |
| </div> |
| </div> |
| <!-- ENDS CONTENT SECTION --> |
| </div> |
| <!-- ENDS .content --> |
| </div> |
| </div> |
| <footer> |
| <div class="container"> |
| <div class="row"> |
| <div class="col-xs-12"> |
| |
| <p class="copyright">Apache Mynewt is available under Apache License, version 2.0.</p> |
| |
| </div> |
| <div class="col-xs-12"> |
| <div class="logos"> |
| <img src="../../../_static/img/asf_logo_wide_small.png" alt="Apache" title="Apache"> |
| <small class="footnote"> |
| Apache Mynewt, Mynewt, Apache, the Apache feather logo, and the Apache Mynewt project logo are either |
| registered trademarks or trademarks of the Apache Software Foundation in the United States and other countries. |
| </small> |
| <a href="https://join.slack.com/mynewt/shared_invite/MTkwMTg1ODM1NTg5LTE0OTYxNzQ4NzQtZTU1YmNhYjhkMg"> |
| <img src="../../../_static/img/add_to_slack.png" alt="Slack Icon" title="Join our Slack Community" /> |
| </a> |
| </div> |
| </div> |
| </div> |
| </div> |
| </footer> |
| </div> |
| <!-- ENDS #wrapper --> |
| |
| |
| |
| <script type="text/javascript"> |
| var DOCUMENTATION_OPTIONS = { |
| URL_ROOT: '../../../', |
| VERSION: '1.4.0', |
| COLLAPSE_INDEX: false, |
| FILE_SUFFIX: '.html', |
| HAS_SOURCE: true, |
| SOURCELINK_SUFFIX: '.txt' |
| }; |
| </script> |
| <script type="text/javascript" src="../../../_static/jquery.js"></script> |
| <script type="text/javascript" src="../../../_static/underscore.js"></script> |
| <script type="text/javascript" src="../../../_static/doctools.js"></script> |
| <script type="text/javascript" src="../../../_static/js/bootstrap-3.0.3.min.js"></script> |
| <script type="text/javascript" src="../../../_static/js/affix.js"></script> |
| <script type="text/javascript" src="../../../_static/js/main.js"></script> |
| |
| |
| |
| </body> |
| |
| </html> |