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NuttX RTOS 

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<html>
<head>
<title>Nuttx Porting Manual</title>
<meta name="author" content="Gregory Nutt">
</head>
<body>
<center>
<big><b>
<p>Nuttx Operating System</p>
<p>Porting Guide</p>
</b></big>
<p><small>by</small></p>
<p>Gregory Nutt</p>
<p><small>Last Update: February 8, 2007</small></p>
</center>
<center><h1>Table of Contents</h1></center>
<li>1.0 <a href="#Introduction">1.0 Introduction</a></li>
<li>2.0 <a href="#DirectoryStructure">Directory Structure</a></li>
<ul>
<li>2.1 <a href="#DirStructDocumentation">Documentation</a></li>
<l1>2.2 <a href="#DirStructArch">arch</a></li>
<li>2.3 <a href="#DirStructDrivers">drivers</a></li>
<li>2.4 <a href="#DirStructExamples">examples</a></li>
<li>2.5 <a href="#DirStructFs">fs</a></li>
<li>2.6 <a href="#DirStructInclude">include</a></li>
<li>2.7 <a href="#DirStructLib">lib</a></li>
<li>2.8 <a href="#DirStructMm">mm</a></li>
<li>2.9 <a href="#DirStructSched">sched</a></li>
<li>2.10 <a href="#DirStructDrivers">tools</a></li>
</ul>
<li>3.0 <a href="#DirectoryConfiAndBuild">Configuring and Building</a></li>
<hr>
<h1>1.0 <a name="Introduction">Introduction</a></h1>
<p><b>Overview</b>
This document provides and overview of the Nuttx build and configuration
logic and provides hints for the incorporation of new processor/board archectures
into the build.
</p>
<p>
See also arch/README.txt.
</p>
<p><b>General Philosophy</b>.
<hr>
<h1>2.0 <a name="DirectoryStructure">Directory Structure</a></h1>
<p>The general directly layout for Nuttx is very similar to the directory structure
of the Linux kernel -- at least at the most superficial layers.
At the top level is the main makefile and a series of sub-directories identified
below and discussed in the following paragraphs:</p>
<ul><pre>
.
|-- Makefile
|-- <a href="#DirStructDocumentation">Documentation</a>
| `-- <i>(documentation files)</i>
|-- <a href="#DirStructArch">arch</a>
| |-- <i>(architecture)</i>
| | |-- Make.defs
| | |-- defconfig
| | |-- include
| | |-- setenv.sh
| | `-- src
| `-- <i>(other architectures)</i>
|-- <a href="#DirStructDrivers">drivers</a>
| |-- Makefile
| `-- <i>(driver source files)</i>
|-- <a href="#DirStructExamples">examples</a>
| `-- <i>(example)</i>
| |-- Makefile
| `-- <i>(example source files)</i>
|-- <a href="#DirStructFs">fs</a>
| |-- Makefile
| `-- <i>(fs source files)</i>
|-- <a href="#DirStructInclude">include</a>
| |-- <i>(standard header files)</i>
| |-- nuttx
| | `-- <i>(nuttx specific header files)</i>
| `- sys
| | `-- <i>(more standard header files)</i>
|-- <a href="#DirStructLib">lib</a>
| |-- Makefile
| `-- <i>(lib source files)</i>
|-- <a href="#DirStructMm">mm</a>
| |-- Makefile
| `-- <i>(mm source files)</i>
|-- <a href="#DirStructSched">sched</a>
| |-- Makefile
| `-- <i>(sched source files)</i>
`-- <a href="#DirStructDrivers">tools</a>
|-- Makefile.mkconfig
|-- configure.sh
|-- mkconfig.c
|-- mkdeps.sh
`-- zipme
</pre></ul>
<h2>2.1 <a name="DirStructDocumentation">Documentation</a></h2>
<h2>2.2 <a name="DirStructArch">arch</a></h2>
<h2>2.3 <a name="DirStructDrivers">drivers</a></h2>
<h2>2.4 <a name="DirStructExamples">examples</a></h2>
<h2>2.5 <a name="DirStructFs">fs</a></h2>
<h2>2.6 <a name="DirStructInclude">include</a></h2>
<h2>2.7 <a name="DirStructLib">lib</a></h2>
<h2>2.8 <a name="DirStructMm">mm</a></h2>
<h2>2.9 <a name="DirStructSched">sched</a></h2>
<h2>2.10 <a name="DirStructDrivers">tools</a></h2>
<hr>
<h1>3.0 <a name="DirectoryConfiAndBuild">Configuring and Building</a></h1>
</body>
</html>

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