2539 lines
80 KiB
HTML
2539 lines
80 KiB
HTML
<html>
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<head>
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<title>NuttX</title>
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</head>
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<body background="backgd.gif">
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<hr><hr>
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<table width ="100%">
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<tr align="center" bgcolor="#e4e4e4">
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<td>
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<h1><big><font color="#3c34ec"><i>NuttX RTOS</i></font></big></h1>
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<p>Last Updated: June 21, 2011</p>
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<hr><hr>
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<table width ="100%">
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<tr bgcolor="#e4e4e4">
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<td>
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<h1>Table of Contents</h1>
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<center><table width ="80%">
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<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
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<td>
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<a href="#overview">Overview</a>.<br>
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What is NuttX? Look at all those files and features... How can it be a tiny OS?
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<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
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<td>
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<a href="#group">NuttX Discussion Group</a>.<br>
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Do you want to talk about NuttX features? Do you need some help? Problems? Bugs?
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<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
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<td>
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<a href="#downloads">Downloads</a>.<br>
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Where can I get NuttX? What is the current development status?
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<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
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<td>
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<a href="#platforms">Supported Platforms</a>.<br>
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What target platforms has NuttX been ported to?
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<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
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<td>
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<a href="#environments">Development Environments</a>.<br>
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What kinds of host cross-development platforms can be used with NuttX?
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<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
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<td>
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<a href="#footprint">Memory Footprint</a>.<br>
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Just how big is it? Do I have enough memory to use NuttX?
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<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
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<td>
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<a href="#licensing">Licensing</a>.<br>
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Are there any licensing restrictions for the use of NuttX? (Almost none)
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Will there be problems if I link my proprietary code with NuttX? (No)
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<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
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<td>
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<a href="#history">Release History</a><br>
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What has changed in the last release of NuttX?
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What unreleased changes are pending in SVN?
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</td>
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<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
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<td>
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<a href="#TODO">Bugs, Issues, <i>Things-To-Do</i></a>.<br>
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Software is never finished nor ever tested well enough.
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(Do you want to help develop NuttX? If so, send me an email).
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<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
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<td>
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<a href="#documentation">Other Documentation</a>.<br>
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What other NuttX documentation is available?
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<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
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<td>
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<a href="#trademarks">Trademarks</a>.<br>
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Some of the words used in this document belong to other people.
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</table>
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</td>
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</tr>
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</table></center>
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<table width ="100%">
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<tr bgcolor="#e4e4e4">
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<td>
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<a name="overview"><h1>Overview</h1></a>
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</td>
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</tr>
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</table>
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<p>
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<b>Goals</b>.
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Nuttx is a real timed embedded operating system (RTOS).
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Its goals are:
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<p>
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<center><table width="90%">
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<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
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<td bgcolor="#5eaee1">
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<b>Small Footprint</b>
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<td><br></td>
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<p>
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Usable in all but the tightest micro-controller environments,
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The focus is on the tiny-to-small, deeply embedded environment.
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</p>
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<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
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<td bgcolor="#5eaee1">
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<b>Rich Feature OS Set</b>
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<td><br></td>
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<td>
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<p>
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The goal is to provide implementations of most standard POSIX OS interfaces
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to support a rich, multi-threaded development environment for deeply embedded
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processors.
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</p>
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NON-GOALS: (1) It is not a goal to provide the rich level of OS
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features like those provided with Linux.
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Small footprint is more important than features.
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Standard compliance is more important than small footprint.
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(2) There is no MMU-based support for processes.
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At present, NuttX assumes a flat address space.
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</p>
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<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
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<td bgcolor="#5eaee1">
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<b>Highly Scalable</b>
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<td><br></td>
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<p>
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Fully scalable from tiny (8-bit) to moderate embedded (32-bit).
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Scalability with rich feature set is accomplished with:
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Many tiny source files, link from static libraries, highly configurable, use of
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weak symbols when available.
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</p>
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</tr>
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<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
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<b>Standards Compliance</b>
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</td>
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<td><br></td>
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<p>
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NuttX strives to achieve a high degree of standards compliance.
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The primary governing standards are POSIX and ANSI standards.
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Additional standard APIs from Unix and other common RTOS's are
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adopted for functionality not available under these standards
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or for functionality that is not appropriate for the deeply-embedded
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RTOS (such as <code>fork()</code>).
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</p>
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<p>
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Because of this standards conformance, software developed under other
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standard OSs (such as Linux) should port easily to NuttX.
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</p>
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<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
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<td bgcolor="#5eaee1">
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<b>Real-Time</b>
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<td><br></td>
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<p>
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Fully pre-emptible, fixed priority and round-robin scheduling.
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</p>
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<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
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<td bgcolor="#5eaee1">
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<b>Totally Open</b>
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<td><br></td>
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<td>
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<p>
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Non-restrictive BSD license.
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</p>
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<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
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<td bgcolor="#5eaee1">
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<b>GNU Toolchains</b>
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</td>
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<td><br></td>
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<td>
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<p>
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Compatible GNU toolchains based on <a href="http://buildroot.uclibc.org/">buildroot</a>
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available for
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<a href="https://sourceforge.net/project/showfiles.php?group_id=189573&package_id=224585">download</a>
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to provide a complete development environment for many architectures.
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</p>
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</tr>
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</table></center>
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<p>
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<b>Feature Set</b>.
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Key features of NuttX include:
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<p>
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<center><table width="90%">
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<tr>
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<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
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<td bgcolor="#5eaee1">
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<b>Standards Compliant Core Task Management</b>
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</td>
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<td><br></td>
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<td>
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<p>
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<li>Modular, micro-kernel</li>
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</p>
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</tr>
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<td><br></td>
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<td>
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<p>
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<li>Fully pre-emptible.</li>
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</p>
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<td><br></td>
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<td>
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<p>
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<li>Naturally scalable.</li>
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</p>
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<td><br></td>
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<p>
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<li>Highly configurable.</li>
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</p>
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<td><br></td>
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<p>
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<li>Easily extensible to new processor architectures, SoC architecture, or board architectures.
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A <a href="NuttxPortingGuide.html">Porting Guide</a> is in development.</li>
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</p>
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</tr>
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<td><br></td>
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<td>
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<p>
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<li>FIFO and round-robin scheduling.</li>
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</p>
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</tr>
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<td><br></td>
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<td>
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<p>
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<li>Realtime, deterministic, with support for priority inheritance</li>
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</p>
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<td><br></td>
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<td>
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<p>
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<li>POSIX/ANSI-like task controls, named message queues, counting semaphores, clocks/timers, signals, pthreads, environment variables, filesystem.</li>
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</p>
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<tr>
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<td><br></td>
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<td>
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<p>
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<li>VxWorks-like task management and watchdog timers.</li>
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</p>
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<td><br></td>
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<td>
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<p>
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<li>BSD socket interface.</li>
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</p>
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</tr>
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<tr>
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<td><br></td>
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<td>
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<p>
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<li>Extensions to manage pre-emption.</li>
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</p>
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</tr>
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<tr>
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<td><br></td>
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<td>
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<p>
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<li>On-demand paging.</li>
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</p>
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<td><br></td>
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<td>
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<p>
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<li>May be built either as an open, flat embedded RTOS or as a separtely built, secure micro-kernel with a system call interface.</li>
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</p>
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<td><br></td>
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<td>
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<p>
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<li>Well documented in the NuttX <a href="NuttxUserGuide.html">User Guide</a>.</li>
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</p>
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</tr>
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<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
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<td bgcolor="#5eaee1">
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<b>File system</b>
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</td>
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</tr>
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<tr>
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<td><br></td>
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<td>
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<p>
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<li>Tiny in-memory, root pseudo-file-system.</li>
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</p>
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<td><br></td>
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<td>
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<p>
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<li>Supports character and block drivers.</li>
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</p>
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<td><br></td>
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<td>
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<p>
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<li>Network, USB (host), USB (device), serial, CAN, driver architectures.</li>
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</p>
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</tr>
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<tr>
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<td><br></td>
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<td>
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<p>
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<li>RAMDISK, pipes, FIFO, <code>/dev/null</code>, <code>/dev/zero</code> drivers.</li>
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</p>
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</tr>
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<tr>
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<td><br></td>
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<td>
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<p>
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<li>Mount-able volumes. Bind mountpoint, filesystem, and block device driver.</li>
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</p>
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</tr>
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<tr>
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<td><br></td>
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<td>
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<p>
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<li>FAT12/16/32 filesystem support.</li>
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</p>
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</tr>
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<tr>
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<td><br></td>
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<td>
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<p>
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<li>NXFFS. the NuttX wear-leveling FLASH file system.</li>
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</p>
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</tr>
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<tr>
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<td><br></td>
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<td>
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<p>
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<li>Generic driver for SPI-based MMC/SD/SDH cards.</li>
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</p>
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</tr>
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<tr>
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<td><br></td>
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<td>
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<p>
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<li>ROMFS filesystem support.</li>
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</p>
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</tr>
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<td><br></td>
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<td>
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<p>
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<li><a href="NuttXNxFlat.html">NXFLAT</a>.
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A new binary format call NXFLAT that can be used to
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execute separately linked programs in place in a file system.
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</p>
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</tr>
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<tr>
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<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
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<td bgcolor="#5eaee1">
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<b>C Library</b>
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</td>
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</tr>
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<tr>
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<td><br></td>
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<td>
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<p>
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<li>Fully integrated into the OS.</li>
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</p>
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</tr>
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<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
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<td bgcolor="#5eaee1">
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<b>Networking</b>
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</td>
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</tr>
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<tr>
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<td><br></td>
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<td>
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<p>
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<li>TCP/IP, UDP, ICMP, IGMPv2 (client) stacks.</li>
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</p>
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</tr>
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<tr>
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<td><br></td>
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<td>
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<p>
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<li>SLIP</li>
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</p>
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</tr>
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<tr>
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<td><br></td>
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<td>
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<p>
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<li>Small footprint (based on uIP).</li>
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</p>
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</tr>
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<tr>
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<td><br></td>
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<td>
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<p>
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<li>BSD compatible socket layer.</li>
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</p>
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</tr>
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<tr>
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<td><br></td>
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<td>
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<p>
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<li>Networking utilities (DHCP server and client, SMTP client, TELNET client, FTP client, TFTP client, HTTP server and client)</li>
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</p>
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</tr>
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<tr>
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<td><br></td>
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<td>
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<p>
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<li>
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A NuttX port of Jeff Poskanzer's <a href="http://acme.com/software/thttpd">THTTPD</a> HTTP server
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integrated with <a href="NuttXNxFlat.html">NXFLAT</a> to provide true, embedded CGI.
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</li>
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</p>
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</tr>
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<tr>
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<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
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<td bgcolor="#5eaee1">
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<b>FLASH Support</b>
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</td>
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</tr>
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<tr>
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<td><br></td>
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<td>
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<p>
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<li><i>MTD</i>-inspired interface for <i>M</i>emory <i>T</i>echnology <i>D</i>evices.</li>
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</p>
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</tr>
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<tr>
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<td><br></td>
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<td>
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<p>
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<li><i>FTL</i>. Simple <i>F</i>lash <i>T</i>ranslation <i>L</i>ayer support file systems on FLASH.</li>
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</p>
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</tr>
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<tr>
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<td><br></td>
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<td>
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<p>
|
|
<li>NXFFS. the NuttX wear-leveling FLASH file system.</li>
|
|
</p>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<li>Support for SPI-based FLASH and FRAM devices.</li>
|
|
</p>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<b>USB Host Support</b>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<li>USB host architecture for USB host controller drivers and device-dependent USB class drivers.</li>
|
|
</p>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<li>USB host controller drivers available for the NXP LPC17xx.</li>
|
|
</p>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<li>Device-dependent USB class drivers available for USB mass storage and HID keyboard.</li>
|
|
</p>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<b>USB Device Support</b>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<li><i>Gadget</i>-like architecture for USB device controller drivers and device-dependent USB class drivers.</li>
|
|
</p>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<li>USB device controller drivers available for the NXP LPC17xx, LPC214x, LPC313x, STMicro STM32 and TI DM320.</li>
|
|
</p>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<li>Device-dependent USB class drivers available for USB serial and for USB mass storage.</li>
|
|
</p>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<li>Built-in <a href="UsbTrace.html">USB trace</a> functionality for USB debug.</li>
|
|
</p>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<b>Graphics Support</b>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<li>Framebuffer drivers.</li>
|
|
</p>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<li>LCD drivers for both parallel and SPI LCDs and OLEDs.</li>
|
|
</p>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<li>
|
|
NX: A graphics library, tiny windowing system and tiny font support that works with either framebuffer or LCD drivers.
|
|
Documented in the <a href="NXGraphicsSubsystem.html">NX Graphics Subsystem</a>
|
|
manual.
|
|
</li>
|
|
</p>
|
|
</tr>
|
|
</table></center>
|
|
|
|
<p>
|
|
<b>NuttX Add-Ons</b>.
|
|
The following packages are available to extend the basic NuttX feature set:
|
|
</p>
|
|
<center><table width="90%">
|
|
|
|
<tr>
|
|
<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<b>NuttShell (NSH)</b>
|
|
</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<li>A small, scalable, bash-like shell for NuttX with rich feature set and small footprint.
|
|
See the <a href="NuttShell.html">NuttShell User Guide</a>.</li>
|
|
</p>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<b>Pascal Compiler with NuttX runtime P-Code interpreter add-on</b>
|
|
</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<li>The Pascal add-on is available for download from the
|
|
<a href="http://sourceforge.net/project/showfiles.php?group_id=189573">SourceForge</a>
|
|
website.</li>
|
|
</p>
|
|
</td>
|
|
</tr>
|
|
</table></center>
|
|
|
|
<p>
|
|
<b>Look at all those files and features... How can it be a tiny OS?</b>.
|
|
The NuttX feature list (above) is fairly long and if you look at the NuttX
|
|
source tree, you will see that there are hundreds of source files comprising
|
|
NuttX. How can NuttX be a tiny OS with all of that?
|
|
</p>
|
|
<center><table width="90%">
|
|
|
|
<tr>
|
|
<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<b>Lots of Features -- More can be smaller!</b>
|
|
</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
The philosophy behind that NuttX is that lots of features are great... <i>BUT</i>
|
|
also that if you don't use those features, then you should not have to pay a penalty
|
|
for the unused features.
|
|
And, with NuttX, you don't! If you don't use a feature, it will not
|
|
be included in the final executable binary.
|
|
You only have to pay the penalty of increased footprint for the features
|
|
that you actually use.
|
|
</p>
|
|
<p>
|
|
Using a variety of technologies, NuttX can scale from the very tiny to
|
|
the moderate-size system. I have executed NuttX with some simple applications
|
|
in as little as 32Kb <i>total</i> memory (code and data).
|
|
On the other hand, typical, richly featured NuttX builds require more like 64Kb
|
|
(and if all of the features are used, this can push 100Kb).
|
|
</p>
|
|
</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<b>Many, many files -- More really is smaller!</b>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
One may be intimidated by the size NuttX source tree. There are hundreds of source files!
|
|
How can that be a tiny OS?
|
|
Actually, the large number of files is one of the tricks to keep NuttX small and
|
|
as scalable as possible.
|
|
Most files contain only a single function.
|
|
Sometimes just one tiny function with only a few lines of code.
|
|
Why?
|
|
</p>
|
|
<ul>
|
|
<li>
|
|
<b>Static Libraries</b>.
|
|
Because in the NuttX build processed, objects are compiled and saved into
|
|
<i>static libraries</i> (<i>archives</i>).
|
|
Then, when the file executable is linked, only the object files that are needed
|
|
are extracted from the archive and added to the final executable.
|
|
By having many, many tiny source files, you can assure that no code that you do
|
|
not execute is ever included in the link.
|
|
And by having many, tiny source files you have better granularity --
|
|
if you don't use that tiny function of even just a few lines of code, it will
|
|
not be included in the binary.
|
|
</li>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<b>Other Tricks</b>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
As mentioned above, the use of many, tiny source files and linking from static
|
|
libraries keeps the size of NuttX down.
|
|
Other tricks used in NuttX include:
|
|
</p>
|
|
<ul>
|
|
<li>
|
|
<b>Configuration Files</b>.
|
|
Before you build NuttX, you must provide a configuration file that specifies
|
|
what features you plan to use and which features you do not.
|
|
This configuration file contains a long list of settings that control
|
|
what is built into NuttX and what is not.
|
|
There are hundreds of such settings
|
|
(see the <a href="NuttxPortingGuide.html#apndxconfigs">NuttX Porting Guide</a>
|
|
for a partial list that excludes platform specific settings).
|
|
These many, many configuration options allow NuttX to be highly tuned to
|
|
meet size requirements.
|
|
The downside to all of these configuration options is that it greatly
|
|
complicates the maintenance of NuttX -- but that is my problem, not yours.
|
|
</li>
|
|
<li>
|
|
<b>Weak Symbols</b>
|
|
The GNU toolchain supports <i>weak</i> symbols and these also help to keep
|
|
the size of NuttX down.
|
|
Weak symbols prevent object files from being drawn into the link even if they
|
|
are accessed from source code.
|
|
Careful use of weak symbols is another trick for keep unused code out of the
|
|
final binary.
|
|
</li>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
|
|
</table></center>
|
|
|
|
|
|
<table width ="100%">
|
|
<tr bgcolor="#e4e4e4">
|
|
<td>
|
|
<a name="group"><h1>NuttX Discussion Group</h1></a>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<p>
|
|
Most Nuttx-related discussion occurs on the <a href="http://tech.groups.yahoo.com/group/nuttx/" target="_top"><i>Yahoo!</i> NuttX group</a>.
|
|
You are cordially invited to <a href="http://groups.yahoo.com/group/nuttx/join" target="_top">join</a>.
|
|
I make a special effort to answer any questions and provide any help that I can.
|
|
</p>
|
|
|
|
|
|
<table width ="100%">
|
|
<tr bgcolor="#e4e4e4">
|
|
<td>
|
|
<a name="downloads"><h1>Downloads</h1></a>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<p><b>nuttx-6.5 Release Notes</b>:
|
|
<p>
|
|
The 72<sup>nd</sup> release of NuttX, Version 6.5, was made on June 21, 2011 and is available for download from the
|
|
<a href="http://sourceforge.net/projects/nuttx/files/">SourceForge</a> website.
|
|
The change log associated with the release is available <a href="#currentrelease">here</a>.
|
|
Unreleased changes after this release are available in SVN.
|
|
These unreleased changes are also listed <a href="#pendingchanges">here</a>.
|
|
</p>
|
|
<p>
|
|
The 6.5 release is all about support for the Atmel 8-bit AVR family.
|
|
I have been interested in the AVR family for some time but because of the
|
|
severe SRAM constraints and because of the availability of many tiny schedulers
|
|
for the AVR, it has not been "on the radar screen."
|
|
However, I have recently become interested because of interest expressed by
|
|
members of the Nuttx forum and because of the availability of newer, larger
|
|
capacity AVR parts (that I don't have yet).
|
|
</p>
|
|
<p>
|
|
This release includes support for the following AVR boards.
|
|
As with any initial support for new architectures, there are some incomplete areas and a few caveats that need to be stated.
|
|
Here they are, ordered from the least to the most complete:
|
|
</p>
|
|
<ul>
|
|
<li>
|
|
<p><b>SoC Robotics Amber Web Server (ATMega128)</b>.
|
|
This port of NuttX to the Amber Web Server from
|
|
<a href="http://www.soc-robotics.com/index.htm">SoC Robotics</a>.
|
|
The Amber Web Server is based on an Atmel ATMega128 (128Kb FLASH but
|
|
only 4Kb of SRAM).
|
|
</p>
|
|
<p><b>STATUS</b>:
|
|
Work on this port has stalled due to toolchain issues.
|
|
It is complete, but untested.
|
|
</p>
|
|
<li>
|
|
<p><b>Micropendous 3 (AT9USB647)</b>.
|
|
This port of NuttX to the <a href="http://code.google.com/p/opendous/">Opendous</a>
|
|
Micropendous 3 board.
|
|
Micropendous3 may be populated with an AT90USB646, 647, 1286, or 1287.
|
|
I have only the AT90USB647 version for testing.
|
|
This version has very limited memory resources: 64Kb of FLASH and 4Kb of SRAM.
|
|
</p>
|
|
<p>
|
|
<p><b>STATUS</b>:
|
|
The basic port was released in NuttX-6.5.
|
|
This basic port consists only of a "Hello, World!!&qquo; example
|
|
that demonstrates initialization of the OS, creation of a simple task,
|
|
and serial console output.
|
|
The tiny SRAM limits what you can do with the AT90USB647 (see issues below).
|
|
</p>
|
|
</li>
|
|
<li>
|
|
<p><b>PJRC Teensy++ 2.0 (AT90USB1286)</b>.
|
|
This is a port of NuttX to the PJRC Teensy++ 2.0 board.
|
|
This board was developed by <a href="http://pjrc.com/teensy/">PJRC</a>.
|
|
The Teensy++ 2.0 is based on an Atmel AT90USB1286 MCU with 128Kb of FLASH and 8Kb of SRAM;
|
|
a little more room to move than the AT90USB647.
|
|
</p>
|
|
<p><b>STATUS</b>:
|
|
The basic port was released in NuttX-6.5.
|
|
This basic port consists of a "Hello, World!!" example and
|
|
also slightly simplified NuttShell (NSH) configuration (see the
|
|
<a href="http://www.nuttx.org/NuttShell.html">NSH User Guide</a>).
|
|
</p>
|
|
<p><b>Unfinished Stuff</b>.
|
|
An SPI driver and a USB device driver exist for the AT90USB as well as a USB mass storage configuration.
|
|
However, this configuration is not fully debugged as of the NuttX-6.5 release.
|
|
</p>
|
|
</li>
|
|
</ul>
|
|
|
|
<p><b>AVR-Specific Issues</b>.
|
|
The basic AVR port is solid and biggest issue for using AVR is its tiny SRAM memory and its Harvard architecture.
|
|
Because of the Harvard architecture, constant data that resides to flash is inaccessible using "normal" memory reads and writes (only SRAM data can be accessed "normally").
|
|
Special AVR instructions are available for accessing data in FLASH, but these have not been integrated into the normal, general purpose OS.
|
|
</p>
|
|
<p>
|
|
Most NuttX test applications are console-oriented with lots of strings used for printf and debug output.
|
|
These strings are all stored in SRAM now due to these data accessing issues and even the smallest console-oriented applications can quickly fill a 4-8Kb memory.
|
|
So, in order for the AVR port to be useful, one of two things would need to be done:
|
|
</p>
|
|
<ol>
|
|
<li>
|
|
Don't use console applications that required lots of strings.
|
|
The basic AVR port is solid and your typical deeply embedded application should work fine.
|
|
Or,
|
|
</li>
|
|
<li>
|
|
Create a special version of printf that knows how to access strings that reside in FLASH (or EEPROM).
|
|
</li>
|
|
</ol>
|
|
|
|
<table width ="100%">
|
|
<tr bgcolor="#e4e4e4">
|
|
<td>
|
|
<a name="platforms"><h1>Supported Platforms</h1></a>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<p>The short story (Number of ports follow in parentheses. Follow the links for the details):</p>
|
|
<center><table width="90%">
|
|
<ul>
|
|
<tr>
|
|
<td bgcolor="#e4e4e4" valign="top">
|
|
<li><a href="#linuxusermode">Linux user mode simulation</a> (1)</li>
|
|
<li>ARM
|
|
<ul>
|
|
<li><a href="#arm7tdmi">ARM7TDMI</b></a> (4)</li>
|
|
<li><a href="#arm920t">ARM920T</a> (1) </li>
|
|
<li><a href="#arm926ejs">ARM926EJS</a> (3) </li>
|
|
<li><a href="#armcortexm3">ARM Cortex-M3</a> (10)</li>
|
|
</ul>
|
|
<li>Atmel AVR
|
|
<ul>
|
|
<li><a href="#atmelavr">Atmel 8-bit AVR</a> (3) </li>
|
|
<li><a href="#atmelavr32">Atmel AVR32</a> (1) </li>
|
|
</ul>
|
|
</li>
|
|
</td>
|
|
<td bgcolor="#e4e4e4" valign="top">
|
|
<li>Freescale <a href="#m68hcs12">M68HCS12</a> (2) </li>
|
|
<li>Intel
|
|
<ul>
|
|
<li><a href="#8052">Intel 8052 Microcontroller</a> (1)</li>
|
|
<li><a href="#80x86">Intel 80x86</a> (2)</li>
|
|
</ul>
|
|
</li>
|
|
<li>MicroChip <a href="#pic32mips">PIC32</a> (MIPS) (1)</li>
|
|
<li>Renesas/Hitachi:
|
|
<ul>
|
|
<li><a href="#superh">Renesas/Hitachi SuperH</a> (1/2)</li>
|
|
<li><a href="#m16c">Renesas M16C/26</a> (1/2)</li>
|
|
</ul>
|
|
</li>
|
|
</td>
|
|
<td bgcolor="#e4e4e4" valign="top">
|
|
<li>Zilog
|
|
<ul>
|
|
<li><a href="#zilogz16f">Zilog Z16F</a> (1)</li>
|
|
<li><a href="#zilogez80acclaim">Zilog eZ80 Acclaim!</a> (1)</li>
|
|
<li><a href="#zilogz8encore">Zilog Z8Encore!</a> (2)</li>
|
|
<li><a href="#zilogz80">Zilog Z80</a> (2)</li>
|
|
</ul>
|
|
</li>
|
|
</ul>
|
|
</tr>
|
|
</table></center>
|
|
|
|
<p>The details, caveats and fine print follow:</p>
|
|
|
|
<center><table width="90%">
|
|
<tr>
|
|
<td valign="top"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<a name="linuxusermode"><b>Linux User Mode</b>.</a>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
A user-mode port of NuttX to the x86 Linux/Cygwin platform is available.
|
|
The purpose of this port is primarily to support OS feature development.
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
Does not support interrupts but is otherwise fully functional.
|
|
</p>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td valign="top"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<a name="arm7tdmi"><b>ARM7TDMI</b></a>.
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>TI TMS320C5471</b> (also called <b>C5471</b> or <b>TMS320DA180</b> or <b>DA180</b>).
|
|
NuttX operates on the ARM7 of this dual core processor.
|
|
This port uses the <a href="http://www.spectrumdigital.com/">Spectrum Digital</a>
|
|
evaluation board with a GNU arm-elf toolchain* under Linux or Cygwin.
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
This port is complete, verified, and included in the initial NuttX release.
|
|
</p>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td><hr></td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>NXP LPC214x</b>.
|
|
Support is provided for the NXP LPC214x family of processors. In particular,
|
|
support is provided for the mcu123.com lpc214x evaluation board (LPC2148).
|
|
This port also used the GNU arm-elf toolchain* under Linux or Cygwin.
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
This port boots and passes the OS test (apps/examples/ostest).
|
|
The port is complete and verified. As of NuttX 0.3.17, the port includes:
|
|
timer interrupts, serial console, USB driver, and SPI-based MMC/SD card
|
|
support. A verified NuttShell (<a href="NuttShell.html">NSH</a>)
|
|
configuration is also available.
|
|
</p>
|
|
<p>
|
|
<b>Development Environments:</b>
|
|
1) Linux with native Linux GNU toolchain, 2) Cygwin with Cygwin GNU toolchain, or 3) Cygwin
|
|
with Windows native toolchain (CodeSourcery or devkitARM). A DIY toolchain for Linux
|
|
or Cygwin is provided by the NuttX
|
|
<a href="http://sourceforge.net/project/showfiles.php?group_id=189573&package_id=224585">buildroot</a>
|
|
package.
|
|
</p>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td><hr></td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>NXP LPC2378</b>.
|
|
Support is provided for the NXP LPC2378 MCU. In particular,
|
|
support is provided for the Olimex-LPC2378 development board.
|
|
This port was contributed by Rommel Marcelo is was first released in NuttX-5.3.
|
|
This port also used the GNU arm-elf toolchain* under Linux or Cygwin.
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
This port boots and passes the OS test (apps/examples/ostest) and includes a
|
|
working implementation of the NuttShell (<a href="NuttShell.html">NSH</a>).
|
|
The port is complete and verified.
|
|
As of NuttX 5.3, the port includes only basic timer interrupts and serial console support.
|
|
</p>
|
|
<p>
|
|
<b>Development Environments:</b> (Same as for the NXP LPC214x).
|
|
</p>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td><hr></td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>STMicro STR71x</b>.
|
|
Support is provided for the STMicro STR71x family of processors. In particular,
|
|
support is provided for the Olimex STR-P711 evaluation board.
|
|
This port also used the GNU arm-elf toolchain* under Linux or Cygwin.
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
Integration is complete on the basic port (boot logic, system time, serial console).
|
|
Two configurations have been verified: (1) The board boots and passes the OS test
|
|
with console output visible on UART0, and the NuttShell (<a href="NuttShell.html">NSH</a>)
|
|
is fully functional with interrupt driven serial console. An SPI driver is available
|
|
but only partially tested. Additional features are needed: USB driver, MMC integration,
|
|
to name two (the slot on the board appears to accept on MMC card dimensions; I have only
|
|
SD cards).
|
|
An SPI-based ENC29J60 Ethernet driver for add-on hardware is under development and
|
|
should be available in the NuttX 5.5 release.
|
|
</p>
|
|
<p>
|
|
<b>Development Environments:</b>
|
|
1) Linux with native Linux GNU toolchain, 2) Cygwin with Cygwin GNU toolchain, or 3) Cygwin
|
|
with Windows native toolchain (CodeSourcery or devkitARM). A DIY toolchain for Linux
|
|
or Cygwin is provided by the NuttX
|
|
<a href="http://sourceforge.net/project/showfiles.php?group_id=189573&package_id=224585">buildroot</a>
|
|
package.
|
|
</p>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td valign="top"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<a name="arm920t"><b>ARM920T</b>.</a>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>Freescale MC9328MX1</b> or <b>i.MX1</b>.
|
|
This port uses the Freescale MX1ADS development board with a GNU arm-elf toolchain*
|
|
under either Linux or Cygwin.
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
This port has stalled due to development tool issues.
|
|
Coding is complete on the basic port (timer, serial console, SPI).
|
|
</p>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td valign="top"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<a name="arm926ejs"><b>ARM926EJS</b>.</a>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>TI TMS320DM320</b> (also called <b>DM320</b>).
|
|
NuttX operates on the ARM9 of this dual core processor.
|
|
This port uses the
|
|
<a href="http://wiki.neurostechnology.com/index.php/Developer_Welcome">Neuros OSD</a>
|
|
with a GNU arm-elf toolchain* under Linux or Cygwin.
|
|
The port was performed using the OSD v1.0, development board.
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
The basic port (timer interrupts, serial ports, network, framebuffer, etc.) is complete.
|
|
All implemented features have been verified with the exception of the USB device-side
|
|
driver; that implementation is complete but untested.
|
|
</p>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td><hr></td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<b>NXP <a href="http://ics.nxp.com/products/lpc3000/lpc313x.lpc314x.lpc315x/">LPC3131</a></b>.
|
|
The port for the NXP LPC3131 on the <a href="http://www.embeddedartists.com/products/kits/lpc3131_kit.php">Embedded Artists EA3131</a>
|
|
development board was first released in NuttX-5.1 with a GNU arm-elf or arm-eabi toolchain* under Linux or Cygwin
|
|
(but was not functional until NuttX-5.2).
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
The basic EA3131 port is complete and verified in NuttX-5.2
|
|
This basic port includes basic boot-up, serial console, and timer interrupts.
|
|
This port was extended in NuttX 5.3 with a USB high speed driver contributed by David Hewson.
|
|
David also contributed I2C and SPI drivers plus several important LPC313x USB bug fixes
|
|
that appear in the NuttX 5.6 release.
|
|
This port has been verified using the NuttX OS test, USB serial and mass storage
|
|
tests and includes a working implementation of the NuttShell (<a href="NuttShell.html">NSH</a>).
|
|
</p>
|
|
<p>
|
|
Support for <a href="NuttXDemandPaging.html">on-demand paging</a> has been developed for the EA3131.
|
|
That support would all execute of a program in SPI FLASH by paging code sections out of SPI flash as needed.
|
|
However, as of this writing, I have not had the opportunity to verify this new feature.
|
|
</p>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td><hr></td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<b>NXP LPC315x</b>.
|
|
Support for the NXP LPC315x family has been incorporated into the code base as of NuttX-6.4.
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
The MCU support logic is present but as of this writing has not been verified on hardware.
|
|
Because of the high degree of compatibility between the LPC313x and LPC315x family, it
|
|
is very likely that the support is in place (or at least very close).
|
|
</p>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td valign="top"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<a name="armcortexm3"><b>ARM Cortex-M3</b>.</a>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>Luminary/TI LM3S6918</b>.
|
|
This port uses the <a href=" http://www.micromint.com/">Micromint</a> Eagle-100 development
|
|
board with a GNU arm-elf toolchain* under either Linux or Cygwin.
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
The initial, release of this port was included in NuttX version 0.4.6.
|
|
The current port includes timer, serial console, Ethernet, SSI, and microSD support.
|
|
There are working configurations the NuttX OS test, to run the <a href="NuttShell.html">NuttShell
|
|
(NSH)</a>, the NuttX networking test, and the uIP web server.
|
|
</p>
|
|
<p>
|
|
<b>Development Environments:</b>
|
|
1) Linux with native Linux GNU toolchain, 2) Cygwin with Cygwin GNU toolchain, or 3) Cygwin
|
|
with Windows native toolchain (CodeSourcery or devkitARM). A DIY toolchain for Linux
|
|
or Cygwin is provided by the NuttX
|
|
<a href="http://sourceforge.net/project/showfiles.php?group_id=189573&package_id=224585">buildroot</a>
|
|
package.
|
|
</p>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td><hr></td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>Luminary/TI LM3S6965</b>.
|
|
This port uses the Stellaris LM3S6965 Ethernet Evalution Kit with a GNU arm-elf toolchain*
|
|
under either Linux or Cygwin.
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
This port was released in NuttX 5.5.
|
|
Features are the same as with the Eagle-100 LM3S6918 described above.
|
|
The apps/examples/ostest configuration has been successfully verified and an
|
|
NSH configuration with telnet support is available.
|
|
MMC/SD and Networking support was not been thoroughly verified:
|
|
Current development efforts are focused on porting the NuttX window system (NX)
|
|
to work with the Evaluation Kits OLED display.
|
|
</p>
|
|
<p><small>
|
|
<b>NOTE</b>: As it is configured now, you MUST have a network connected.
|
|
Otherwise, the NSH prompt will not come up because the Ethernet
|
|
driver is waiting for the network to come up.
|
|
</small></p>
|
|
<p>
|
|
<b>Development Environments:</b> See the Eagle-100 LM3S6918 above.
|
|
</p>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td><hr></td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>Luminary/TI LM3S8962</b>.
|
|
This port uses the Stellaris EKC-LM3S8962 Ethernet+CAN Evalution Kit with a GNU arm-elf toolchain*
|
|
under either Linux or Cygwin.
|
|
Contributed by Larry Arnold.
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
This port was released in NuttX 5.10.
|
|
Features are the same as with the Eagle-100 LM3S6918 described above.
|
|
</p>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td><hr></td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>Luminary/TI LM3S9B96</b>.
|
|
Header file support was contributed by Tiago Maluta for this part.
|
|
However, no complete board support configuration is available as of this writing.
|
|
</p>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td><hr></td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>STMicro STM32F103x</b>.
|
|
Support for three MCUs and two board configurations are available.
|
|
MCU support includes: STM32F103ZET6, STM32F103RET6, and STM32F107VC.
|
|
Board support includes:
|
|
</p>
|
|
<ol>
|
|
<li>
|
|
This port uses the <a href=" http://www.st.com/">STMicro</a> STM3210E-EVAL development board that
|
|
features the STM32F103ZET6 MCU.
|
|
</li>
|
|
<li>
|
|
ISOTEL NetClamps VSN V1.2 ready2go sensor network platform based on the
|
|
STMicro STM32F103RET6. Contributed by Uros Platise.
|
|
</li>
|
|
</ol>
|
|
<p>
|
|
These ports uses a GNU arm-elf toolchain* under either Linux or Cygwin (with native Windows GNU
|
|
tools or Cygwin-based GNU tools).
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
</p>
|
|
<ul>
|
|
<li>
|
|
The basic STM32 port was released in NuttX version 0.4.12. The basic port includes boot-up
|
|
logic, interrupt driven serial console, and system timer interrupts.
|
|
The 0.4.13 release added support for SPI, serial FLASH, and USB device.;
|
|
The 4.14 release added support for buttons and SDIO-based MMC/SD and verifed DMA support.
|
|
Verified configurations are available for NuttX OS test, the NuttShell (NSH) example,
|
|
the USB serial device class, and the USB mass storage device class example.
|
|
</li>
|
|
<li>
|
|
Support for the NetClamps VSN was included in version 5.18 of NuttX.
|
|
</li>
|
|
</ul>
|
|
<p>
|
|
<b>Development Environments:</b>
|
|
1) Linux with native Linux GNU toolchain, 2) Cygwin with Cygwin GNU toolchain, or 3) Cygwin
|
|
with Windows native toolchain (RIDE7, CodeSourcery or devkitARM). A DIY toolchain for Linux
|
|
or Cygwin is provided by the NuttX
|
|
<a href="http://sourceforge.net/project/showfiles.php?group_id=189573&package_id=224585">buildroot</a>
|
|
package.
|
|
</p>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td><hr></td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>Atmel AT91SAM3U</b>.
|
|
This port uses the <a href="http://www.atmel.com/">Atmel</a> SAM3U-EK
|
|
development board that features the AT91SAM3U4E MCU.
|
|
This port uses a GNU arm-elf or arm-eabi toolchain* under either Linux or Cygwin (with native Windows GNU
|
|
tools or Cygwin-based GNU tools).
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
The basic SAM3U-EK port was released in NuttX version 5.1. The basic port includes boot-up
|
|
logic, interrupt driven serial console, and system timer interrupts.
|
|
That release passes the NuttX OS test and is proven to have a valid OS implementation.
|
|
A configuration to support the NuttShell is also included.
|
|
NuttX version 5.4 adds support for the HX8347 LCD on the SAM3U-EK board.
|
|
This LCD support includes an example using the
|
|
<a href=" http://www.nuttx.org/NXGraphicsSubsystem.html">NX graphics system</a>.
|
|
</p>
|
|
<p>
|
|
Subsequent NuttX releases will extend this port and add support for SDIO-based SD cards and
|
|
USB device (and possible LCD support).
|
|
These extensions may or may not happen by the Nuttx 5.5 release as my plate is kind of full now.
|
|
</p>
|
|
<p>
|
|
<b>Development Environments:</b>
|
|
1) Linux with native Linux GNU toolchain, 2) Cygwin with Cygwin GNU toolchain, or 3) Cygwin
|
|
with Windows native toolchain (CodeSourcery or devkitARM). A DIY toolchain for Linux
|
|
or Cygwin is provided by the NuttX
|
|
<a href="http://sourceforge.net/projects/nuttx/files/buildroot/">buildroot</a>
|
|
package.
|
|
</p>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td><hr></td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>NXP LPC1766 and LPC1768</b>.
|
|
Configurations are available for three boards:
|
|
<ul>
|
|
<li>
|
|
The Nucleus 2G board from <a href="http://www.2g-eng.com/">2G Engineering</a> (LPC1768),
|
|
</li>
|
|
<li>
|
|
The mbed board from <a href="http://mbed.org">mbed.org</a> (LPC1768, Contributed by Dave Marples), and
|
|
</li>
|
|
<li>
|
|
The LPC1766-sTK board from <a href="http://www.olimex.com/">Olimex</a> (LPC1766).
|
|
</li>
|
|
<li>
|
|
The Embedded Artists base board with NXP LPCXpresso LPC1768.
|
|
</li>
|
|
</ul>
|
|
</p>
|
|
<p>
|
|
The Nucleus 2G boar, the mbed board, and the LPCXpresso all feature the NXP LPC1768 MCU;
|
|
the Olimex LPC1766-STK board features an LPC1766.
|
|
All use a GNU arm-elf or arm-eabi toolchain* under either Linux or Cygwin (with native Windows GNU tools or Cygwin-based GNU tools).
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
The following summarizes the features that has been developed and verified on individual LPC17xx-based boards.
|
|
These features should, however, be common and available for all LPC17xx-based boards.
|
|
</p>
|
|
<ol>
|
|
<li>
|
|
<p><b>Nucleus2G LPC1768</b></p>
|
|
<ul>
|
|
<li>
|
|
Some initial files for the LPC17xx family were released in NuttX 5.6, but
|
|
</li>
|
|
<li>
|
|
The first functional release for the NXP LPC1768/Nucleus2G occured with NuttX 5.7 with
|
|
Some additional enhancements through NuttX-5.9.
|
|
</li>
|
|
</ul>
|
|
</p>
|
|
<p>
|
|
That initial, 5.6, basic release included <i>timer</i> interrupts and a <i>serial console</i> and was
|
|
verified using the NuttX OS test (<code>apps/examples/ostest</code>).
|
|
Configurations available include include a verified NuttShell (NSH) configuration
|
|
(see the <a href="http://www.nuttx.org/NuttShell.html">NSH User Guide</a>).
|
|
The NSH configuration supports the Nucleus2G's microSD slot and additional configurations
|
|
are available to exercise the the USB serial and USB mass storage devices.
|
|
However, due to some technical reasons, neither the SPI nor the USB device drivers are fully verified.
|
|
(Although they have since been verfiied on other platforms; this needs to be revisited on the Nucleus2G).
|
|
</p>
|
|
</li>
|
|
<li>
|
|
<p><b>mbed LPC1768</b></p>
|
|
<ul>
|
|
<li>
|
|
Support for the mbed board was contributed by Dave Marples and released in NuttX-5.11.
|
|
</li>
|
|
</ul>
|
|
</p>
|
|
<p>
|
|
This port includes a NuttX OS test configuration (see <code>apps/examples/ostest</code>).
|
|
</p>
|
|
</li>
|
|
<li>
|
|
<p><b>Olimex LPC1766-STK</b></p>
|
|
<ul>
|
|
<li>
|
|
Support for that Olimex-LPC1766-STK board was added to NuttX 5.13.
|
|
</li>
|
|
<li>
|
|
The NuttX-5.14 release extended that support with an <i>Ethernet driver</i>.
|
|
</li>
|
|
<li>
|
|
The NuttX-5.15 release further extended the support with a functional <i>USB device driver</i> and <i>SPI-based micro-SD</i>.
|
|
</li>
|
|
<li>
|
|
The NuttX-5.16 release added a functional <i>USB host controller driver</i> and <i>USB host mass storage class driver</i>.
|
|
</li>
|
|
<li>
|
|
The NuttX-5.17 released added support for low-speed USB devicers, interrupt endpoints, and a <i>USB host HID keyboard class driver</i>.
|
|
</li>
|
|
</ul>
|
|
</p>
|
|
<ul><p>
|
|
Verified configurations are now available for the NuttX OS test,
|
|
for the NuttShell with networking and microSD support(NSH, see the <a href="ttp://www.nuttx.org/NuttShell.html">NSH User Guide</a>),
|
|
for the NuttX network test, for the <a href="http://acme.com/software/thttpd">THTTPD</a> webserver,
|
|
for USB serial deive and USB storage devices examples, and for the USB host HID keyboard driver.
|
|
Support for the USB host mass storage device can optionally be configured for the NSH example.
|
|
A driver for the <i>Nokia 6100 LCD</i> and an NX graphics configuration for the Olimex LPC1766-STK have been added.
|
|
However, neither the LCD driver nor the NX configuration have been verified as of the the NuttX-5.17 release.
|
|
</p></ul>
|
|
</li>
|
|
<li>
|
|
<p><b>Embedded Artists base board with NXP LPCXpresso LPC1768</b></p>
|
|
<ul>
|
|
An fully verified board configuration is included in NuttX-6.2.
|
|
The Code Red toolchain is supported under either Linux or Windows.
|
|
Verifed configurations include DHCPD, the NuttShell (NSH), NuttX graphis (NX), the NuttX OS test, THTTPD, and USB mass storage device.
|
|
</ul>
|
|
</li>
|
|
</ol>
|
|
<p>
|
|
<b>Development Environments:</b>
|
|
1) Linux with native Linux GNU toolchain, 2) Cygwin with Cygwin GNU toolchain, or 3) Cygwin
|
|
with Windows native toolchain (CodeSourcery devkitARM or Code Red). A DIY toolchain for Linux
|
|
or Cygwin is provided by the NuttX
|
|
<a href="http://sourceforge.net/projects/nuttx/files/buildroot/">buildroot</a>
|
|
package.
|
|
</p>
|
|
</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td valign="top"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<a name="atmelavr"><b>Atmel AVR</b>.</a>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>SoC Robotics ATMega128</b>.
|
|
This port of NuttX to the Amber Web Server from <a href="http://www.soc-robotics.com/index.htm">SoC Robotics</a>
|
|
is partially completed.
|
|
The Amber Web Server is based on an Atmel ATMega128.
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
Work on this port has stalled due to toolchain issues. Complete, but untested
|
|
code for this port appears in the NuttX 6.5 release.
|
|
</p>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td><hr></td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>Micropendous 3 AT9USB64x</b> and <b>AT9USB6128x</b>.
|
|
This port of NuttX to the Opendous Micropendous 3 board. The Micropendous3 is
|
|
may be populated with an AT90USB646, 647, 1286, or 1287. I have only the AT90USB647
|
|
version for testing. This version have very limited memory resources: 64Kb of
|
|
FLASH and 4Kb of SRAM.
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
The basic port was released in NuttX-6.5. This basic port consists only of
|
|
a "Hello, World!!" example that demonstrates initialization of the OS,
|
|
creation of a simple task, and serial console output.
|
|
</p>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td><hr></td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>PJRC Teensy++ 2.0 AT9USB1286</b>.
|
|
This is a port of NuttX to the PJRC Teensy++ 2.0 board.
|
|
This board was developed by <a href="http://pjrc.com/teensy/">PJRC</a>.
|
|
The Teensy++ 2.0 is based on an Atmel AT90USB1286 MCU.
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
The basic port was released in NuttX-6.5. This basic port consists of
|
|
a "Hello, World!!" example that demonstrates initialization of the OS,
|
|
creation of a simple task, and serial console output as well as a somewhat
|
|
simplified NuttShell (NSH) configuration (see the
|
|
<a href="http://www.nuttx.org/NuttShell.html">NSH User Guide</a>).
|
|
</p>
|
|
<p>
|
|
An SPI driver and a USB device driver exist for the AT90USB as well
|
|
as a USB mass storage configureation. However, this configuration is not
|
|
fully debugged as of the NuttX-6.5 release.
|
|
</p>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td><hr></td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p><b>AVR-Specific Issues</b>.
|
|
The basic AVR port is solid and biggest issue for using AVR is its tiny SRAM memory and its Harvard architecture.
|
|
Because of the Harvard architecture, constant data that resides to flash is inaccessible using "normal" memory reads and writes (only SRAM data can be accessed "normally").
|
|
Special AVR instructions are available for accessing data in FLASH, but these have not been integrated into the normal, general purpose OS.
|
|
</p>
|
|
<p>
|
|
Most NuttX test applications are console-oriented with lots of strings used for printf and debug output.
|
|
These strings are all stored in SRAM now due to these data accessing issues and even the smallest console-oriented applications can quickly fill a 4-8Kb memory.
|
|
So, in order for the AVR port to be useful, one of two things would need to be done:
|
|
</p>
|
|
<ol>
|
|
<li>
|
|
Don't use console applications that required lots of strings.
|
|
The basic AVR port is solid and your typical deeply embedded application should work fine.
|
|
Or,
|
|
</li>
|
|
<li>
|
|
Create a special version of printf that knows how to access strings that reside in FLASH (or EEPROM).
|
|
</li>
|
|
</ol>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>Development Environments:</b>
|
|
1) Linux with native Linux GNU toolchain, 2) Cygwin with Cygwin GNU toolchain, or 3) Cygwin with Windows native toolchain.
|
|
All testing, however, has been performed using the Nuttx DIY toolchain for Linux or Cygwin is provided by the NuttX
|
|
<a href="http://sourceforge.net/projects/nuttx/files/buildroot/">buildroot</a> package.
|
|
As a result, that toolchain is recommended.
|
|
</p>
|
|
</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td valign="top"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<a name="atmelavr32"><b>Atmel AVR32</b>.</a>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>AV32DEV1</b>.
|
|
This port uses the www.mcuzone.com AVRDEV1 board based on the Atmel AT32UC3B0256 MCU.
|
|
This port requires a special GNU avr32 toolchain available from atmel.com website.
|
|
This is a windows native toolchain and so can be used only under Cygwin on Windows.
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
This port is has completed all basic development, but there is more that needs to be done.
|
|
All code is complete for the basic NuttX port including header files for all AT32UC3* peripherals.
|
|
The untested AVR32 code was present in the 5.12 release of NuttX.
|
|
Since then, the basic RTOS port has solidified:
|
|
<ul>
|
|
<li>
|
|
The port successfully passes the NuttX OS test (apps/examples/ostest).
|
|
</li>
|
|
<li>
|
|
A NuttShell (NSH) configuration is in place (see the <a href="http://www.nuttx.org/NuttShell.html">NSH User Guide</a>).
|
|
Testing of that configuration has been postponed (because it got bumped by the Olimex LPC1766-STK port).
|
|
Current Status: I think I have a hardware problem with my serial port setup.
|
|
There is a good chance that the NSH port is complete and functional, but I am not yet able to demonstrate that.
|
|
At present, I get nothing coming in the serial RXD line (probably because the pins are configured wrong or I have the MAX232 connected wrong).
|
|
</li>
|
|
</ul>
|
|
The basic, port (including the verified apps/examples/ostest configuration) was be released in NuttX-5.13.
|
|
A complete port will include drivers for additional AVR32 UC3 devices -- like SPI and USB --- and will be available in a later release,
|
|
time permitting.
|
|
</p>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td valign="top"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<a name="m68hcs12"><b>Freescale M68HCS12</b>.</a>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>MC9S12NE64</b>.
|
|
Support for the MC9S12NE64 MCU and two boards are included:
|
|
</p>
|
|
<ul>
|
|
<li>
|
|
The Freescale DEMO9S12NE64 Evaluation Board, and
|
|
</li>
|
|
<li>
|
|
The Future Electronics Group NE64 /PoE Badge board.
|
|
</li>
|
|
</ul>
|
|
<p>
|
|
Both use a GNU arm-elf toolchain* under Linux or Cygwin.
|
|
The NuttX <a href="http://sourceforge.net/projects/nuttx/files/buildroot/">buildroot</a> provides a properly patched GCC 3.4.4 toolchain that is highly optimized for the m9s12x family.
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
Coding is complete for the MC9S12NE64 and for the NE64 Badge board.
|
|
However, testing has not yet begun due to issues with BDMs, Code Warrior, and
|
|
the paging in the build process.
|
|
Progress is slow, but I hope to see a fully verified MC9S12NE64 port in the near future.
|
|
</p>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td valign="top"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<a name="8052"><b>Intel 8052 Microcontroller</b>.</a>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>PJRC 87C52 Development Board</b>.
|
|
This port uses the <a href="http://www.pjrc.com/">PJRC</a> 87C52 development system
|
|
and the <a href="http://sdcc.sourceforge.net/">SDCC</a> toolchain under Linux or Cygwin.
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
This port is complete but not stable with timer interrupts enabled.
|
|
There seems to be some issue when the stack pointer enters into the indirect IRAM
|
|
address space during interrupt handling.
|
|
This architecture has not been built in some time will likely have some compilation
|
|
problems because of SDCC compiler differences.
|
|
</p>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td valign="top"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<a name="80x86"><b>Intel 80x86</b>.</a>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>QEMU/Bifferboard i486</b>.
|
|
This port uses the <a href="http://wiki.qemu.org/Main_Page">QEMU</a> i486 and the native
|
|
Linux, Cywgin, MinGW the GCC toolchain under Linux or Cygwin.
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
The basic port was code-complete in NuttX-5.19 and verifed in NuttX-6.0.
|
|
The port was verified using the OS and NuttShell (NSH) examples under QEMU.
|
|
The port is reported to be functional on the <a href="http://bifferos.bizhat.com">Bifferboard</a> as well.
|
|
This is a great, stable starting point for anyone interest in fleshing out the x86 port!
|
|
</p>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td><hr></td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>RGMP</b>.
|
|
RGMP stands for RTOS and GPOS on Multi-Processor.
|
|
RGMP is a project for running GPOS and RTOS simultaneously on multi-processor platforms
|
|
You can port your favorite RTOS to RGMP together with an unmodified Linux to form a hybrid operating system.
|
|
This makes your application able to use both RTOS and GPOS features.
|
|
</p>
|
|
<p>
|
|
See the <a href="http://rgmp.sourceforge.net/wiki/index.php/Main_Page">RGMP Wiki</a> for further information about RGMP.
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
This initial port of NuttX to RGMP was provided in NuttX-6.3.
|
|
This initial RGP port provides only minimal driver support and does not use the native NuttX interrupt system.
|
|
This is a great, stable starting point for anyone interest in working with NuttX under RGMP!
|
|
</p>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td valign="top"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<a name="pic32mips"><b>MicroChip PIC32 (MIPS)</b>.</a>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>PIC32MX460F512L</b>.
|
|
A port of NuttX to the PIC32MX460F512L is underway.
|
|
This port uses the PIC32MX board from PCB Logic Design Co.
|
|
The board is a very simple -- little more than a carrier for the PIC32 MCU plus voltage regulation, debug interface, and an OTG connector.
|
|
</p>
|
|
<p>
|
|
<b>Development Environment:</b>
|
|
This port uses the <i>LITE</i> version of the PIC32MX toolchain available
|
|
for download from the <a href="http://www.microchip.com">MicroChip</a> website.
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
This port is code complete and has begun testing.
|
|
Testing is, unfortunately, delayed until I obtain some additional test equipment
|
|
(you can't use PICkit 2 with the PIC32; you need PICkit 3).
|
|
</p>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td valign="top"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<a name="superh"><b>Renesas/Hitachi SuperH</b>.</a>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>SH-1 SH7032</b>.
|
|
This port uses the Hitachi SH-1 Low-Cost Evaluation Board (SH1_LCEVB1), US7032EVB,
|
|
with a GNU arm-elf toolchain* under Linux or Cygwin.
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
This port is available as of release 0.3.18 of NuttX. The port is basically complete
|
|
and many examples run correctly. However, there are remaining instabilities that
|
|
make the port un-usable. The nature of these is not understood; the behavior is
|
|
that certain SH-1 instructions stop working as advertised. This could be a silicon
|
|
problem, some pipeline issue that is not handled properly by the gcc 3.4.5 toolchain
|
|
(which has very limit SH-1 support to begin with), or perhaps with the CMON debugger.
|
|
At any rate, I have exhausted all of the energy that I am willing to put into this cool
|
|
old processor for the time being.
|
|
</p>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td valign="top"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<a name="m16c"><b>Renesas M16C/26</b>.</a>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>Renesas M16C/26 Microncontroller</b>.
|
|
This port uses the Renesas SKP16C26 Starter kit and the GNU M32C toolchain.
|
|
The development environment is either Linux or Cygwin under WinXP.
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
Initial source files released in nuttx-0.4.2.
|
|
At this point, the port has not been integrated; the target cannot be built
|
|
because the GNU <code>m16c-elf-ld</code> link fails with the following message:
|
|
</p>
|
|
<ul>
|
|
<code>m32c-elf-ld: BFD (GNU Binutils) 2.19 assertion fail /home/Owner/projects/nuttx/buildroot/toolchain_build_m32c/binutils-2.19/bfd/elf32-m32c.c:482</code>
|
|
</ul>
|
|
<p>Where the reference line is:</p>
|
|
<ul><pre>
|
|
/* If the symbol is out of range for a 16-bit address,
|
|
we must have allocated a plt entry. */
|
|
BFD_ASSERT (*plt_offset != (bfd_vma) -1);
|
|
</pre></ul>
|
|
<p>
|
|
No workaround is known at this time. This is a show stopper for M16C for
|
|
the time being.
|
|
</p>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td valign="top"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<a name="zilogz16f"><b>Zilog Z16F</b>.</a>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>Zilog z16f Microncontroller</b>.
|
|
This port use the Zilog z16f2800100zcog development kit and the Zilog
|
|
ZDS-II Windows command line tools.
|
|
The development environment is Cygwin under WinXP.
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
The initial release of support for the z16f was made available in NuttX version 0.3.7.
|
|
</p>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td valign="top"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<a name="zilogez80acclaim"><b>Zilog eZ80 Acclaim!</b>.</a>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>Zilog eZ80Acclaim! Microncontroller</b>.
|
|
There are two eZ80Acclaim! ports:
|
|
</p>
|
|
<ul>
|
|
<li>One uses the ZiLOG ez80f0910200kitg development kit, and
|
|
<li>The other uses the ZiLOG ez80f0910200zcog-d development kit.
|
|
</ul>
|
|
<p>
|
|
Both boards are based on the eZ80F091 part and both use the Zilog ZDS-II
|
|
Windows command line tools.
|
|
The development environment is Cygwin under WinXP.
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
Integration and testing of NuttX on the ZiLOG ez80f0910200zcog-d is complete.
|
|
The first integrated version was released in NuttX version 0.4.2 (with important early bugfixes
|
|
in 0.4.3 and 0.4.4).
|
|
As of this writing, that port provides basic board support with a serial console, SPI, and eZ80F91 EMAC driver.
|
|
</p>
|
|
</ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td valign="top"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<a name="zilogz8encore"><b>Zilog Z8Encore!</b>.</a>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>Zilog Z8Encore! Microncontroller</b>.
|
|
This port uses the either:
|
|
</p>
|
|
<ul>
|
|
<li>Zilog z8encore000zco development kit, Z8F6403 part, or</li>
|
|
<li>Zilog z8f64200100kit development kit, Z8F6423 part</li>
|
|
</ul>
|
|
<p>
|
|
and the Zilog ZDS-II Windows command line tools.
|
|
The development environment is Cygwin under WinXP.
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
This release has been verified only on the ZiLOG ZDS-II Z8Encore! chip simulation
|
|
as of nuttx-0.3.9.
|
|
</p>
|
|
<ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td valign="top"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<a name="zilogz80"><b>Zilog Z80</b>.</a>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>Z80 Instruction Set Simulator</b>.
|
|
This port uses the <a href="http://sdcc.sourceforge.net/">SDCC</a> toolchain
|
|
under Linux or Cygwin (verified using version 2.6.0).
|
|
This port has been verified using only a Z80 instruction simulator.
|
|
That simulator can be found in the NuttX SVN
|
|
<a href="http://nuttx.svn.sourceforge.net/viewvc/nuttx/trunk/misc/sims/z80sim/">here</a>.
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
This port is complete and stable to the extent that it can be tested
|
|
using an instruction set simulator.
|
|
</p>
|
|
<ul>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td><hr></td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>XTRS: TRS-80 Model I/III/4/4P Emulator for Unix</b>.
|
|
A very similar Z80 port is available for <a href="http://www.tim-mann.org/xtrs.html">XTRS</a>,
|
|
the TRS-80 Model I/III/4/4P Emulator for Unix.
|
|
That port also uses the <a href="http://sdcc.sourceforge.net/">SDCC</a> toolchain
|
|
under Linux or Cygwin (verified using version 2.6.0).
|
|
</p>
|
|
<ul>
|
|
<p>
|
|
<b>STATUS:</b>
|
|
Basically the same as for the Z80 instruction set simulator.
|
|
This port was contributed by Jacques Pelletier.
|
|
</p>
|
|
<ul>
|
|
</td>
|
|
</tr>
|
|
</table></center>
|
|
|
|
<blockquote>* A highly modified <a href="http://buildroot.uclibc.org/">buildroot</a>
|
|
is available that may be used to build a NuttX-compatible ELF toolchain under
|
|
Linux or Cygwin. Configurations are available in that buildroot to support ARM, Cortex-M3,
|
|
avr, m68k, m68hc11, m68hc12, m9s12, blackfin, m32c, h8, and SuperH ports.</blockquote>
|
|
|
|
<table width ="100%">
|
|
<tr bgcolor="#e4e4e4">
|
|
<td>
|
|
<a name="environments"><h1>Development Environments</h1></a>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<center><table width="90%">
|
|
<tr>
|
|
<td valign="top"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<b>Linux + GNU <code>make</code> + GCC/binutils</b>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
The is the most natural development environment for NuttX.
|
|
Any version of the GCC/binutils toolchain may be used.
|
|
There is a highly modified <a href="http://buildroot.uclibc.org/">buildroot</a>
|
|
available for download from the
|
|
<a href="http://sourceforge.net/project/showfiles.php?group_id=189573">NuttX SourceForge</a>
|
|
page.
|
|
This download may be used to build a NuttX-compatible ELF toolchain under Linux or Cygwin.
|
|
That toolchain will support ARM, m68k, m68hc11, m68hc12, and SuperH ports.
|
|
The buildroot SVN may be accessed in the
|
|
<a href="http://nuttx.svn.sourceforge.net/viewvc/nuttx/trunk/misc/buildroot/">NuttX SVN</a>.
|
|
</p>
|
|
</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td valign="top"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<b>Linux + GNU <code>make</code> + SDCC</b>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
Also very usable is the Linux environment using the
|
|
<a href="http://sdcc.sourceforge.net/">SDCC</a> compiler.
|
|
The SDCC compiler provides support for the 8051/2, z80, hc08, and other microcontrollers.
|
|
The SDCC-based logic is less well exercised and you will likely find some compilation
|
|
issues if you use parts of NuttX with SDCC that have not been well-tested.
|
|
</p>
|
|
</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td valign="top"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<b>Cygwin + GNU <code>make</code> + GCC/binutils</b>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
This combination works well too.
|
|
It works just as well as the native Linux environment except
|
|
that compilation and build times are a little longer.
|
|
The custom NuttX <a href="http://sourceforge.net/projects/nuttx/files/buildroot/">buildroot</a> referenced above may be build in
|
|
the Cygwin environment as well.
|
|
</p>
|
|
</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td valign="top"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<b>Cygwin + GNU <code>make</code> + SDCC</b>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
I have never tried this combination, but it would probably work just fine.
|
|
</p>
|
|
</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td valign="top"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<b>Cygwin + GNU <code>make</code> + Windows Native Toolchain</b>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
This is a tougher environment.
|
|
In this case, the Windows native toolchain is unaware of the
|
|
Cygwin <i>sandbox</i> and, instead, operates in the native Windows environment.
|
|
The primary difficulties with this are:
|
|
</p>
|
|
<ul>
|
|
<li>
|
|
<b>Paths</b>.
|
|
Full paths for the native toolchain must follow Windows standards.
|
|
For example, the path <code>/home/my\ name/nuttx/include</code> my have to be
|
|
converted to something like <code>'C:\cygwin\home\my name\nuttx\include'</code>
|
|
to be usable by the toolchain.
|
|
</li>
|
|
<p>
|
|
Fortunately, this conversion is done simply using the <code>cygpath</code> utility.
|
|
</p>
|
|
<li>
|
|
<b>Symbolic Links</b>
|
|
NuttX depends on symbolic links to install platform-specific directories in the build system.
|
|
On Linux, true symbolic links are used.
|
|
On Cygwin, emulated symbolic links are used.
|
|
Unfortunately, for native Windows applications that operate outside of the
|
|
Cygwin <i>sandbox</i>, these symbolic links cannot be used.
|
|
</li>
|
|
<p>
|
|
The NuttX make system works around this limitation by copying the platform
|
|
specific directories in place.
|
|
These copied directories make work a little more complex, but otherwise work well.
|
|
</p>
|
|
<p><small>
|
|
NOTE: In this environment, it should be possible to use the NTFS <code>mklink</code> command to create links.
|
|
This should only require a minor modification to the build scripts (see <code>tools/winlink.sh</code> script).
|
|
</small></p>
|
|
<li>
|
|
<b>Dependencies</b>
|
|
NuttX uses the GCC compiler's <code>-M</code> option to generate make dependencies. These
|
|
dependencies are retained in files called <code>Make.deps</code> throughout the system.
|
|
For compilers other than GCC, there is no support for making dependencies in this way.
|
|
For Windows native GCC compilers, the generated dependencies are windows paths and not
|
|
directly usable in the Cygwin make. By default, dependencies are surpressed for these
|
|
compilers as well.
|
|
</li>
|
|
<p><small>
|
|
NOTE: dependencies are suppress by setting the make variable <code>MKDEPS</code> to point
|
|
to the do-nothing dependency script, <code>tools/mknulldeps.sh</code>.
|
|
Dependencies can be enabled for the Windows native GCC compilers by setting
|
|
<code>MKDEPS</code> to point to <code>$(TOPDIR)/tools/mkdeps.sh --winpaths $(TOPDIR)</code>.
|
|
</small></p>
|
|
</ul>
|
|
<p>
|
|
<b>Supported Windows Native Toolchains</b>.
|
|
At present, only the Zilog Z16F, z8Encore, and eZ80Acclaim ports use a non-GCC native Windows
|
|
toolchain(the Zilog ZDS-II toolchain).
|
|
Support for Windows native GCC toolchains (CodeSourcery and devkitARM) is currently implemented
|
|
for the NXP LPC214x, STMicro STR71x, and Luminary LMS6918 ARM ports.
|
|
(but could easily be extended to any other GCC-based platform with a small effort).
|
|
</p>
|
|
</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td valign="top"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td bgcolor="#5eaee1">
|
|
<b>Other Environments?
|
|
Windows Native <code>make</code> + Windows Native Toolchain?</b>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td><br></td>
|
|
<td>
|
|
<p>
|
|
<b>Environment Dependencies</b>.
|
|
The primary environmental dependency of NuttX are (1) GNU make,
|
|
(2) bash scripting, and (3) Linux utilities (such as cat, sed, etc.).
|
|
If you have other platforms that support GNU make or make
|
|
utilities that are compatible with GNU make, then it is very
|
|
likely that NuttX would work in that environment as well (with some
|
|
porting effort). If GNU make is not supported, then some significant
|
|
modification of the Make system would be required.
|
|
</p>
|
|
<p>
|
|
<b>GNUWin32</b>.
|
|
For example, with suitable make system changes, it should be possible to
|
|
use native GNU tools (such as those from
|
|
<a href="http://sourceforge.net/projects/gnuwin32/">GNUWin32</a>)
|
|
to build NuttX.
|
|
However, that environment has not been used as of this writing.
|
|
</p>
|
|
<p><small>
|
|
NOTE: One of the members on the <a href="http://tech.groups.yahoo.com/group/nuttx/">NuttX forum</a>
|
|
reported that they successful built NuttX using such a GNUWin32-based, Windows native environment.
|
|
They reported that the only necessary change was to the use the NTFS mklink command to create links
|
|
(see <code>tools/winlink.sh</code> script).
|
|
</small></p>
|
|
</td>
|
|
</tr>
|
|
</table></center>
|
|
|
|
<table width ="100%">
|
|
<tr bgcolor="#e4e4e4">
|
|
<td>
|
|
<a name="footprint"><h1>Memory Footprint</h1></a>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<ul>
|
|
<p><b>C5471 (ARM7)</b>
|
|
The build for this ARM7 target that includes most of the OS features and
|
|
a broad range of OS tests. The size of this executable as given by the
|
|
Linux <tt>size</tt> command is (3/9/07):
|
|
</p>
|
|
<pre>
|
|
text data bss dec hex filename
|
|
53272 428 3568 57268 dfb4 nuttx
|
|
</pre>
|
|
<p><b>DM320 (ARM9)</b>
|
|
This build for the ARM9 target includes a significant subset of OS
|
|
features, a filesystem, Ethernet driver, full TCP/IP, UDP and (minimal)
|
|
ICMP stacks (via uIP) and a small network test application: (11/8/07,
|
|
configuration netconfig, apps/examples/nettest)
|
|
</p>
|
|
<pre>
|
|
text data bss dec hex filename
|
|
49472 296 3972 53740 d1ec nuttx
|
|
</pre>
|
|
<p>
|
|
Another build for the ARM9 target includes a minimal OS feature
|
|
set, Ethernet driver, full TCP/IP and (minimal) ICMP stacks, and
|
|
a small webserver: (11/20/07, configuration uipconfig, apps/examples/uip)
|
|
</p>
|
|
<pre>
|
|
text data bss dec hex filename
|
|
52040 72 4148 56260 dbc4 nuttx
|
|
</pre>
|
|
<p><b>87C52</b>
|
|
A reduced functionality OS test for the 8052 target requires only
|
|
about 18-19Kb:
|
|
</p>
|
|
<pre>
|
|
Stack starts at: 0x21 (sp set to 0x20) with 223 bytes available.
|
|
|
|
Other memory:
|
|
Name Start End Size Max
|
|
---------------- -------- -------- -------- --------
|
|
PAGED EXT. RAM 0 256
|
|
EXTERNAL RAM 0x0100 0x02fd 510 7936
|
|
ROM/EPROM/FLASH 0x2100 0x6e55 19798 24384
|
|
</pre>
|
|
</ul>
|
|
|
|
<table width ="100%">
|
|
<tr bgcolor="#e4e4e4">
|
|
<td>
|
|
<a name="licensing"><h1>Licensing</h1></a>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<ul>
|
|
<p>
|
|
NuttX is available under the highly permissive
|
|
<a href="http://en.wikipedia.org/wiki/BSD_license">BSD license</a>.
|
|
Other than some fine print that you agree to respect the copyright
|
|
you should feel absolutely free to use NuttX in any environment and
|
|
without any concern for jeopardizing any proprietary software that
|
|
you may link with it.
|
|
</p>
|
|
</ul>
|
|
|
|
<table width ="100%">
|
|
<tr bgcolor="#e4e4e4">
|
|
<td>
|
|
<a name="history"><h1>Release History</h1></a>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<ul>
|
|
<p>
|
|
The current NuttX Change Log is available in SVN <a href="http://nuttx.svn.sourceforge.net/viewvc/nuttx/trunk/nuttx/ChangeLog?view=log">here</a>.
|
|
ChangeLog snapshots associated with the current release are available below.
|
|
</p>
|
|
</ul>
|
|
|
|
<center><table width ="80%">
|
|
<tr>
|
|
<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td>
|
|
<a href="ChangeLog.txt">Change Logs for All NuttX Releases</a><br>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td>
|
|
<a href="#currentrelease">ChangeLog for the Current Releases</a><br>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td>
|
|
<a href="#pendingchanges">Unreleased Changes</a>
|
|
</td>
|
|
</tr>
|
|
</table></center>
|
|
|
|
<table width ="100%">
|
|
<tr bgcolor="#e4e4e4">
|
|
<td>
|
|
<a name="currentrelease">ChangeLog for the Current Release</a>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<ul><pre>
|
|
nuttx-6.5 2011-06-21 Gregory Nutt <spudmonkey@racsa.co.cr>
|
|
|
|
* arch/avr/src/avr and arch/avr/include/avr: Adds general support for
|
|
the Atmel 8-bit AVR family.
|
|
* arch/avr/src/atmega and arch/avr/include/atmega: Adds support for the
|
|
Atmel AVR ATMega family.
|
|
* arch/avr/src/at90usb and arch/avr/include/at90usb: Adds support for the
|
|
Atmel AVR AT90USB family.
|
|
* configs/micropendous3: Adds a board configuration for the Opendous
|
|
Micropendous 3 board. This board may be populated with several different
|
|
members of the Atmel AVR AT90USB family.
|
|
* configs/amber: This is a placehold for the Atmel ATMega128 Amber Web
|
|
Server from SoC Robotics. Not much present in this directory on initial
|
|
check-in.
|
|
* configs/teensy: Adds a board configuration for the PJRC Teensy++ 2.0 board
|
|
that features an Atmel AT90USB1286 MCU.
|
|
* fs/fat: Offsets, sector numbers, etc. need to be off_t, not size_t. size_t
|
|
is intended to be the maximum size of a memory object, not a file offset. This
|
|
does not make any difference except on systems (like the AVR) where size_t
|
|
is only 16-bits.
|
|
|
|
apps-6.5 2011-06-06 Gregory Nutt <spudmonkey@racsa.co.cr>
|
|
|
|
* netutils/ftpc: Simpflication and size reduction.
|
|
|
|
pascal-1.0 2011-05-15 Gregory Nutt <spudmonkey@racsa.co.cr>
|
|
|
|
* nuttx/: The Pascal add-on module now installs and builds under the
|
|
apps/interpreters directory. This means that the pascal-2.1 module is
|
|
incompatible with will all releases of NuttX prior to nuttx-6.0 where the
|
|
apps/ module was introduced.
|
|
|
|
buildroot-1.10 2011-05-06 <spudmonkey@racsa.co.cr>
|
|
|
|
* Add patch submitted by Dimiter Georgiev to work around problems in building
|
|
GDB 6.8 with versions of Cygwin > 1.7.
|
|
* configs/i486-defconfig-4.3.3 - Builds an i486 cross development toolchain
|
|
using gcc 4.3.3. Why wouldyou want such a thing? On Linux, of course,
|
|
such a thing is not needed because you can use the installed GCC to build
|
|
i486 ELF binaries. But that will not work under Cygwin! The Cygwin
|
|
toolchain (and probably MinGW), build DOS MZ format executables (i.e.,
|
|
.exe files). That is probably not usable for most NuttX targets.
|
|
Instead, you should use this i486-elf-gcc to generate true ELF binaries
|
|
under Cygwin.
|
|
* Makefile - Alter copy arguments to avoid permissions problems when
|
|
copying NuttX header files.
|
|
* toolchain/nxflat/nxflat.mk and Makefile - Fix include paths.
|
|
* toolchain/gcc/3.3.6 - Added a patch to fixed compilation error on Ubuntu
|
|
9.10.
|
|
* toolchain/nxflat/Makefile - Correct static library link order.
|
|
* configs/arm920t-defconfig-4.3.3 - Enable support for NXFLAT tools.
|
|
* toolchain/binutils/2.21 and toolchain/gcc/4.5.2 - Add support for GCC
|
|
4.5.2 with binutils 2.21.
|
|
* configs/arm920t-eabi-defconfig-4.5.2 - Add a configuration to build a
|
|
GCC 4.5.2 EABI ARM toolchain for the ARM920t.
|
|
</pre></ul>
|
|
|
|
<table width ="100%">
|
|
<tr bgcolor="#e4e4e4">
|
|
<td>
|
|
<a name="pendingchanges">Unreleased Changes</a>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<ul><pre>
|
|
nuttx-6.6 2011-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
|
|
|
|
apps-6.6 2011-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
|
|
|
|
pascal-3.1 2011-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
|
|
|
|
buildroot-1.11 2011-xx-xx <spudmonkey@racsa.co.cr>
|
|
</pre></ul>
|
|
|
|
<table width ="100%">
|
|
<tr bgcolor="#e4e4e4">
|
|
<td>
|
|
<a name="TODO"><h1>Bugs, Issues, <i>Things-To-Do</i></h1></a>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<ul>
|
|
<p>
|
|
The current list of NuttX <i>Things-To-Do</i> in SVN <a href="http://nuttx.svn.sourceforge.net/viewvc/nuttx/trunk/nuttx/TODO?view=log">here</a>.
|
|
A snapshot of the <i>To-Do</i> list associated with the current release are available <a href="TODO.txt">here</a>.
|
|
</p>
|
|
</ul>
|
|
<table width ="100%">
|
|
<tr bgcolor="#e4e4e4">
|
|
<td>
|
|
<a name="documentation"><h1>Other Documentation</h1></a>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<ul><table>
|
|
<tr>
|
|
<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td><a href="NuttxUserGuide.html">User Guide</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td><a href="NuttxPortingGuide.html">Porting Guide</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td><a href="NuttShell.html">NuttShell (NSH)</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td><a href="NuttXNxFlat.html">NXFLAT</a> Binary Format</td>
|
|
</tr>
|
|
<tr>
|
|
<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td><a href="NXGraphicsSubsystem.html">NX Graphics Subsystem</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td><a href="NuttXDemandPaging.html">Demand Paging</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td><a href="README.html">NuttX README Files</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td><a href="ChangeLog.txt">Change Log</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td><a href="TODO.txt">To-Do List</a></td>
|
|
</tr>
|
|
<tr>
|
|
<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
|
|
<td><a href="UsbTrace.html">USB Device Driver Tracing</a></td>
|
|
</tr>
|
|
</center></ul>
|
|
|
|
<small>
|
|
<table width ="100%">
|
|
<tr bgcolor="#e4e4e4">
|
|
<td>
|
|
<a name="trademarks"><h1>Trademarks</h1></a>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
<ul>
|
|
<li>ARM, ARM7 ARM7TDMI, ARM9, ARM920T, ARM926EJS Cortex-M3 are trademarks of Advanced RISC Machines, Limited.</li>
|
|
<li>Cygwin is a trademark of Red Hat, Incorporated.</li>
|
|
<li>Linux is a registered trademark of Linus Torvalds.</li>
|
|
<li>Eagle-100 is a trademark of <a href=" http://www.micromint.com/">Micromint USA, LLC</a>.
|
|
<li>LPC2148 is a trademark of NXP Semiconductors.</li>
|
|
<li>TI is a tradename of Texas Instruments Incorporated.</li>
|
|
<li>UNIX is a registered trademark of The Open Group.</li>
|
|
<li>VxWorks is a registered trademark of Wind River Systems, Incorporated.</li>
|
|
<li>ZDS, ZNEO, Z16F, Z80, and Zilog are a registered trademark of Zilog, Inc.</li>
|
|
</ul>
|
|
<p>
|
|
NOTE: NuttX is <i>not</i> licensed to use the POSIX trademark. NuttX uses the POSIX
|
|
standard as a development guideline only.
|
|
</p>
|
|
</small>
|
|
|
|
</body>
|
|
</html>
|
|
|