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| <li class="toctree-l1"><a class="reference internal" href="../introduction/index.html">Introduction</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../introduction/inviolables.html">The Inviolable Principles of NuttX</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../quickstart/index.html">Getting Started</a></li> |
| <li class="toctree-l1 current"><a class="current reference internal" href="#">OS Components</a><ul> |
| <li class="toctree-l2"><a class="reference internal" href="nsh/index.html">NuttShell (NSH)</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="power.html">Power Management</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="socketcan.html">SocketCAN Device Drivers</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="syslog.html">SYSLOG</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="binfmt.html">Binary Loader</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="drivers/index.html">Device Drivers</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="filesystem.html">NuttX File System</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="nxflat.html">NXFLAT</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="nxgraphics/index.html">NX Graphics Subsystem</a></li> |
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| <div class="section" id="os-components"> |
| <h1>OS Components<a class="headerlink" href="#os-components" title="Permalink to this headline">¶</a></h1> |
| <p>NuttX is very feature-rich RTOS and is thus composed of various different subsystems. The following sections explain how each of these main RTOS components work and can be used. For detailed documentation on the specific API used in this case, you can head to the <a class="reference internal" href="../reference/index.html"><span class="doc">reference</span></a>.</p> |
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| <li class="toctree-l1"><a class="reference internal" href="nsh/index.html">NuttShell (NSH)</a><ul> |
| <li class="toctree-l2"><a class="reference internal" href="nsh/nsh.html">Overview</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="nsh/commands.html">Commands</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="nsh/config.html">Configuration Settings</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="nsh/customizing.html">Customizing the NuttShell</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="nsh/builtin.html">NSH “Built-In” Applications</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="nsh/installation.html">Customizing NSH Initialization</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="nsh/login.html">Shell Login</a></li> |
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| <li class="toctree-l1"><a class="reference internal" href="power.html">Power Management</a><ul> |
| <li class="toctree-l2"><a class="reference internal" href="power.html#interfaces">Interfaces</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="power.html#callbacks">Callbacks</a></li> |
| </ul> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="socketcan.html">SocketCAN Device Drivers</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="syslog.html">SYSLOG</a><ul> |
| <li class="toctree-l2"><a class="reference internal" href="syslog.html#syslog-interfaces">SYSLOG Interfaces</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="syslog.html#syslog-channels">SYSLOG Channels</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="syslog.html#syslog-channel-options">SYSLOG Channel Options</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="syslog.html#ram-logging-device">RAM Logging Device</a></li> |
| </ul> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="binfmt.html">Binary Loader</a><ul> |
| <li class="toctree-l2"><a class="reference internal" href="binfmt.html#binary-loader-interface">Binary Loader Interface</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="binfmt.html#symbol-tables">Symbol Tables</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="binfmt.html#configuration-variables">Configuration Variables</a></li> |
| </ul> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="drivers/index.html">Device Drivers</a><ul> |
| <li class="toctree-l2"><a class="reference internal" href="drivers/character/index.html">Character Device Drivers</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="drivers/block/index.html">Block Device Drivers</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="drivers/special/index.html">Specialized Device Drivers</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="drivers/index.html#lower-half-and-upper-half">Lower-half and upper-half</a></li> |
| </ul> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="filesystem.html">NuttX File System</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="nxflat.html">NXFLAT</a><ul> |
| <li class="toctree-l2"><a class="reference internal" href="nxflat.html#overview">Overview</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="nxflat.html#nxflat-toolchain">NXFLAT Toolchain</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="nxflat.html#appendix-a-no-got-operation">Appendix A: No GOT Operation</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="nxflat.html#appendix-b-pic-text-workaround">Appendix B: PIC Text Workaround</a></li> |
| </ul> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="nxgraphics/index.html">NX Graphics Subsystem</a><ul> |
| <li class="toctree-l2"><a class="reference internal" href="nxgraphics/index.html#objectives">Objectives</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="nxgraphics/index.html#organization">Organization</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="nxgraphics/index.html#nx-header-files">NX Header Files</a></li> |
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| <li class="toctree-l2"><a class="reference internal" href="paging.html#nuttx-common-logic-design-description">NuttX Common Logic Design Description</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="paging.html#architecture-specific-support-requirements">Architecture-Specific Support Requirements</a></li> |
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