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<html>
<head>
<title>NFS Client How-To</title>
</head>
<body background="backgd.gif">
<hr><hr>
<table width ="100%">
<tr align="center" bgcolor="#e4e4e4">
<td>
<h1><big><font color="#3c34ec"><i>NFS Client How-To</i></font></big></h1>
<p>Last Updated: June 18, 2012</p>
</td>
</tr>
</table>
<hr><hr>
<table width ="100%">
<tr bgcolor="#e4e4e4">
<td>
<h1>Table of Contents</h1>
</td>
</tr>
</table>
<center><table width ="80%">
<tr>
<td>
<table>
<tr>
<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
<td>
<a href="#nfsconfiguration">Adding NFS to the NuttX Configuration</a>
</td>
</tr>
</table>
<table>
<tr>
<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
<td>
<a href="#mountinterface">Mount Interface</a>
</td>
</tr>
</table>
<table>
<tr>
<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
<td>
<a href="#nfsmount">NFS Mount Command</a>
</td>
</tr>
</table>
<table>
<tr>
<td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
<td>
<a href="#serverconfig">Configuring the NFS server (Ubuntu)</a>
</td>
</tr>
</table>
</td>
</tr>
</table></center>
<table width ="100%">
<tr bgcolor="#e4e4e4">
<td>
<a name="nfsconfiguration"><h1>Adding NFS to the NuttX Configuration</h1></a>
</td>
</tr>
</table>
<p>
The NFS client is easily added to your configuration:
You simply need to add <code>CONFIG_NFS</code> to your <code>nuttx/.config</code> file.
There are, however, a few dependencies on other system settings:
</p>
<ol>
<li>
First, there are number of things that you must configure in order to be able to use any file system:
</li>
<ul>
<li>
<code>CONFIG_NFILE_DESCRIPTORS > 0</code>. You must include support for file descriptors.
</li>
<li>
<code>CONFIG_DISABLE_MOUNTPOINT=n</code>. You must include support for mount points in the pseudo-file system.
</li>
</ul>
<li>
And there are several dependencies on the networking configuration.
At a minimum, you need to have the following selections:
</li>
<ul>
<li>
<code>CONFIG_NET=y</code>. General networking support.
</li>
<li>
<code>CONFIG_NET_UDP=y</code>. Support for UDP.
</li>
</ul>
</ol>
<table width ="100%">
<tr bgcolor="#e4e4e4">
<td>
<a name="mountinterface"><h1>Mount Interface</h1></a>
</td>
</tr>
</table>
<p>
A low-level, C-callable interface is provided to mount a file system.
That interface is called <code>mount()</code> and is mentioned in the <a href="NuttxPortingGuide.html#NxFileSystem"><code>porting guide</code></a> and is prototyped in the header file <code>include/sys/mount.h</code>:
</p>
<ul><pre>
int mount(const char *source, const char *target, const char *filesystemtype, unsigned long mountflags, const void *data);
</pre></ul>
<p>
<b>Synopsis</b>:
<code>mount()</code> attaches the filesystem specified by the <code>source</code> block device name into the root file system at the path specified by <code>target</code>.
</p>
<p>
<b>Input Paramters</b>:
<ul>
<li><code>source</code>. A null-terminated string providing the fill path to a block driver in the NuttX pseudo-file system.
<li><code>target</code>. The location in the NuttX pseudo-file system where the volume will be mounted.
<li><code>filesystemtype</code>. A string identifying the type of file system to use.
<li><code>mountflags</code>. Various flags that can be used to qualify how the file system is mounted.
<li><code>data</code>. Opaque data that is passed to the file system with the mount occurs.
</ul>
</p>
<p>
<b>Returned Values</b>
Zero is returned on success; -1 is returned on an error and <code>errno</code> is set appropriately:
<ul>
<li><code>EACCES</code>.
A component of a path was not searchable or mounting a read-onlyfilesystem was attempted without giving the <code>MS_RDONLY</code> flag.
</li>
<li><code>EBUSY</code>.
<code>source</code> is already mounted.
</li>
<li><code>EFAULT</code>.
One of the pointer arguments points outside the user address space.
</li>
<li><code>EINVAL</code>.
<code>source</code> had an invalid superblock.
</li>
<li><code>ENODEV</code>.
<code>filesystemtype</code> not configured
</li>
<li><code>ENOENT</code>.
A pathname was empty or had a nonexistent component.
</li>
<li><code>ENOMEM</code>.
Could not allocate a memory to copy filenames or data into.
</li>
<li><code>ENOTBLK</code>.
<code>source</code> is not a block device
</li>
</ul>
</p>
<p>
This same interface can be used to mount a remote, NFS file system using some special parameters.
The NFS mount differs from the <i>normal</i> file system mount in that: (1) there is no block driver for the NFS file system, and (2) special parameters must be passed as <code>data</code> to describe the remote NFS server.
Thus the following code snippet might represent how an NFS file system is mounted:
</p>
<ul><pre>
#include &lt;sys/mount.h&gt;
#include &lt;nuttx/fs/nfs.h&gt;
struct nfs_args data;
char *mountpoint;
ret = mount(NULL, mountpoint, string &quot;nfs&quot;, 0, (FAR void *)&data);
</pre></ul>
<p>
NOTE that: (1) the block driver parameter is <code>NULL</code>.
The <code>mount()</code> is smart enough to know that no block driver is needed with the NFS file system.
(2) The NFS file system is identified with the simple string &quot;nfs&quot;
(3) A reference to <code>struct nfs_args</code> is passed as an NFS-specific argument.
</p>
<p>
The NFS-specific interface is described in the file <code>include/nuttx/fs/nfs.h</code>.
There you can see that <code>struct nfs_args</code> is defined as:
</p>
<ul><pre>
struct nfs_args
{
uint8_t addrlen; /* Length of address */
uint8_t sotype; /* Socket type */
uint8_t flags; /* Flags, determines if following are valid: */
uint8_t timeo; /* Time value in deciseconds (with NFSMNT_TIMEO) */
uint8_t retrans; /* Times to retry send (with NFSMNT_RETRANS) */
uint16_t wsize; /* Write size in bytes (with NFSMNT_WSIZE) */
uint16_t rsize; /* Read size in bytes (with NFSMNT_RSIZE) */
uint16_t readdirsize; /* readdir size in bytes (with NFSMNT_READDIRSIZE) */
char *path; /* Server's path of the directory being mount */
struct sockaddr_storage addr; /* File server address (requires 32-bit alignment) */
};
</pre></ul>
<table width ="100%">
<tr bgcolor="#e4e4e4">
<td>
<a name="nfsmount"><h1>NFS Mount Command</h1></a>
</td>
</tr>
</table>
<p>
The <a href="NuttShell.html">NuttShell (NSH)</a> also supports a command called <code>nfsmount</code>
that can be used to mount a remote file system via the NSH command line.
</p>
<p>
<b>Command Syntax:</b>
</p>
<ul><pre>
nfsmount &lt;server-address&gt; &lt;mount-point&gt; &lt;remote-path&gt;
</pre></ul>
<p>
<b>Synopsis</b>.
The <code>nfsmount</code> command mounts a network file system in the NuttX pseudo filesystem.
The <code>nfsmount</code> will use NFSv3 UDP protocol to mount the remote file system.
</p>
<p>
<b>Command Line Arguments</b>.
The <code>nfsmount</code> takes three arguments:
</p>
<ol>
<li>
The <code>&lt;server-address&gt;</code> is the IP address of the server exporting the file system you wish to mount.
This implementation of NFS for the NuttX RTOS is only for a local area network, so the server and client must be in the same network.
</li>
<li>
The <code>&lt;mount-point &gt;</code> is the location in the NuttX pseudo filesystem where the mounted volume will appear.
This mount point can only reside in the NuttX pseudo filesystem.
By convention, this mount point is a subdirectory under <code>/mnt</code>.
The mount command will create whatever pseudo directories that may be needed to complete the full path (but the full path must not already exist).
</li>
<li>
The <code>&lt;remote-path&gt;</code> is the file system <code>/</code> directory being exported from server.
This <code>/</code> directory must have been configured for exportation on the server before when the NFS server was set up.
</li>
</ol>
<p>
After the volume has been mounted in the NuttX pseudo filesystem, it may be access in the same way as other objects in the file system.
</p>
<p>
<b>Example</b>.
Suppose that the NFS server has been configured to export the directory <code>/export/shared</code>.
The the following command would mount that file system (assuming that the target also has privileges to mount the file system).
</p>
<ul><pre>
NuttShell (NSH)
nsh&gt; ls /mnt
/mnt:
nsh: ls: no such directory: /mnt
nsh&gt; nfsmount 10.0.0.1 /mnt/nfs /export/shared
nsh&gt; ls -l /mnt/nfs
/mnt/nfs:
drwxrwxrwx 4096 ..
drwxrwxrwx 4096 testdir/
-rw-rw-rw- 6 ctest.txt
-rw-r--r-- 15 btest.txt
drwxrwxrwx 4096 .
nsh&gt; echo &quot;This is a test&quot; &gt;/mnt/nfs/testdir/testfile.txt
nsh&gt; ls -l /mnt/nfs/testdir
/mnt/nfs/testdir:
-rw-rw-rw- 21 another.txt
drwxrwxrwx 4096 ..
drwxrwxrwx 4096 .
-rw-rw-rw- 16 testfile.txt
nsh&gt; cat /mnt/nfs/testdir/testfile.txt
This is a test
</pre></ul>
<table width ="100%">
<tr bgcolor="#e4e4e4">
<td>
<a name="serverconfig"><h1>Configuring the NFS server (Ubuntu)</h1></a>
</td>
</tr>
</table>
<p>
Setting up the server will be done in two steps:
First, setting up the configuration file for NFS, and then starting the NFS services.
But first, you need to install the nfs server on Ubuntu with the these two commands:
</p>
<ul><pre>
# sudo apt-get install nfs-common</FONT>
# sudo apt-get install nfs-kernel-server</FONT>
</pre></ul>
<p>
After that, we need to make or choose the directory we want to export from the NFS server.
In our case, we are going to make a new directory called <code>/export</code>.
</p>
<ul><pre>
# sudo mkdir /export
</pre></ul>
<p>
It is important that <code>/export</code> directory allow access to everyone (777 permissions) as we will be accessing the NFS share from the client with no authentication.
</p>
<ul><pre>
# sudo chmod 777 /export
</pre></ul>
<p>
When all this is done, we will need to edit the configuration file to set up an NFS server: <code>/etc/exports</code>.
This file contains a list of entries;
each entry indicates a volume that is shared and how it is shared.
For more information for a complete description of all the setup options for this file you can check in the man pages (<code>man export</code>).</p>
An entry in <code>/etc/exports</code> will typically look like this:
</p>
<ul><pre>
directory machine1(option11,option12)
</pre></ul>
<p>
So for our example we export <coce>/export</code> to the client 10.0.0.2 add the entry:
</p>
<ul><pre>
/export 10.0.0.2(rw)
</pre></ul>
<p>
In our case we are using all the default options except for the <code>ro</code> that we replaced with <code>rw</code> so that our client will have read and write access to the directory that we are exporting.
</p>
</p>
After we do all the require configurations, we are ready to start the server with the next command:
</p>
<ul><pre>
# sudo /etc/init.d/nfs-kernel-server start
</pre></ul>
</p>
Note: If you later decide to add more NFS exports to the /etc/exports file, you will need to either restart NFS daemon
or run command exportfs.
</p>
<ul><pre>
# sudo /etc/init.d/nfs-kernel-server start
</pre></ul>
<p>Or</p>
<ul><pre>
# exportfs -ra
</pre></ul>
<p>
Now we can check if the export directory and our mount point is properly set up.
</p>
<ul><pre>
# sudo showmount -e
# sudo showmount -a
</pre></ul>
<p>
And also we can verify if NFS is running in the system with:
</p>
<P STYLE="margin-left: 0.49in; margin-bottom: 0in; line-height: 100%">
<ul><pre>
# rpcinfo &ndash;p</FONT>
program vers proto port
100000 2 tcp 111 portmapper
100000 2 udp 111 portmapper
100011 1 udp 749 rquotad
100011 2 udp 749 rquotad
100005 1 udp 759 mountd
100005 1 tcp 761 mountd
100005 2 udp 764 mountd
100005 2 tcp 766 mountd
100005 3 udp 769 mountd
100005 3 tcp 771 mountd
100003 2 udp 2049 nfs
100003 3 udp 2049 nfs
300019 1 tcp 830 amd
300019 1 udp 831 amd
100024 1 udp 944 status
100024 1 tcp 946 status
100021 1 udp 1042 nlockmgr
100021 3 udp 1042 nlockmgr
100021 4 udp 1042 nlockmgr
100021 1 tcp 1629 nlockmgr
100021 3 tcp 1629 nlockmgr
100021 4 tcp 1629 nlockmgr
</pre></ul>
<p>
Now your NFS sever is sharing <code>/export</code> directory to be accessed.
</p>
</body>
</html>
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<html>
<head>
<title>NuttX Getting Started</title>
</head>
<body background="backgd.gif">
<hr><hr>
<table width ="100%">
<tr align="center" bgcolor="#e4e4e4">
<td>
<h1><big><font color="#3c34ec"><i>Getting Started with NuttX</i></font></big></h1>
<p>Last Updated: December 31, 2011</p>
</td>
</tr>
</table>
<hr><hr>
<p><b>Getting Started</b>.
There is no &quot;Getting Started&quot; Guide for NuttX yet.
However, most everything that you need to get started with NuttX can be found in the <code>README.txt</code> file located in the top-level NuttX directory.
That <code>README.txt</code> can also be read online in the NuttX GIT repository
<a href="https://bitbucket.org/nuttx/nuttx/src/master/README.txt" target="_blank">here</a>.
Just click on &quot;Links to HEAD: (view)&quot; on that page.
</p>
</body>
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<html>
<head>
<title>NxWidgets</title>
</head>
<body background="backgd.gif">
<hr><hr>
<table width ="100%">
<tr align="center" bgcolor="#e4e4e4">
<td>
<h1><big><font color="#3c34ec"><i>NxWidgets</i></font></big></h1>
<p>Last Updated: March 27, 2012</p>
</td>
</tr>
</table>
<h1>NXWidgets</h1>
<p>
In order to better support NuttX based platforms, a special graphical userinterface has been created called NXWidgets.
NXWidgets is written in C++ and integrates seamlessly with the NuttX <a href="NXGraphicsSubsystem.html">NX graphics subsystem</a> in order to provide graphic objects, or &quot;widgets,&quot; in the NX Graphics Subsystem
</p>
<p>
Some of the features of NXWidgets include:
</p>
<ul>
<li><b>Conservative C++</b>.
NXWidgets is written entirely in C++ but using only selected &quot;embedded friendly&quot; C++ constructs that are fully supported under NuttX.
No additional C++ support libraries are required.
</li>
<li><b>NX Integration</b>.
NXWidgets integrate seamlessly with the <a href="NXGraphicsSubsystem.html">NX graphics subsystem</a>.
Think of the X server under Linux … the NX graphics system is like a tiny X server that provides windowing under NuttX.
By adding NXWidgets, you can support graphics objects like buttons and text boxes in the NX windows and toolbars.
</li>
<li><b>Small Footprint</b>.
NXWidgets is tailored for use MCUs in embedded applications.
It is ideally suited for mid- and upper-range of most MCU families.
A complete NXWidgets is possible in as little as 40K of FLASH and maybe 4K of SRAM.
</li>
<li><b>Output Devices</b>.
NXWidgets will work on the high-end frame buffer devices as well as on LCDs connected via serial or parallel ports to a small MCU.
</li>
<li><b>Input Devices</b>.
NXWidgets will accept position and selection inputs from a mouse or a touchscreen.
It will also support character input from a keyboard such as a USB keyboard.
NXWidgets supports on very special widget called CKeypad that will provide keyboard input via an on-screen keypad that can be operated via mouse or touchscreen inputs.
</li>
<li><b>Many Graphic Objects</b>.
Some of the graphic objects supported by NXWidgets include labels, buttons, text boxes, button arrays, check boxes, cycle buttons, images, sliders, scrollable list boxes, progress bars, and more.
</li>
<li><b>DOxygen Documentation</b>
DOxygen documentation is available.
</li>
</ul>
<p>
Note: Many of the fundamental classed in NxWidgets derive from the Antony
Dzeryn's &quot;Woopsi&quot; project: http://woopsi.org/ which also has a BSD style
license. See the COPYING file for details.
</p>
<h1>NXWidgets DOxygen Documentation</h1>
<p>
Release notes, DOxygen documentation, as well as downloads for the latest NxWidgets releases are available online:
</p>
<ul>
<li>
<b>NxWidgets-1.15</b>:
<a href="http://nuttx.org/nxwidgets_v1_15/index.html">Documentation</a>,
<a href="http://sourceforge.net/projects/nuttx/files/NxWidgets/NxWidgets-1.15/">Release notes</a>, and
<a href="http://sourceforge.net/projects/nuttx/files/NxWidgets/NxWidgets-1.15/">Downloads</a>
</li>
</p>
<p>
Thanks go to Jose Pablo Carballo for contributing this!
</p>
</p>
</body>
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<html>
<head>
<title>README Files</title>
</head>
<body background="backgd.gif">
<hr><hr>
<table width ="100%">
<tr align="center" bgcolor="#e4e4e4">
<td>
<h1><big><font color="#3c34ec"><i>NuttX README Files</i></font></big></h1>
<p>Last Updated: March 25, 2016</p>
</td>
</tr>
</table>
<p>
Additional information can be found in the <code>Documentation/</code> directory and
also in <code>README</code> files that are scattered throughout the source tree.
Below is a guide to the available <code>README</code> files.
Some <code>README</code> files contain more important information than others.
The key <code>README</code> files are shown in <code><i><b>BOLDFACE/ITALIC</i></b></code> below.
</p>
<p>
Below is a guide to the available README files in the NuttX source tree:
</p>
<ul><pre>
nuttx/
|- <a href="https://bitbucket.org/nuttx/nuttx/src/master/README.txt" target="_blank"><b>README.txt</b></a>
|- arch/
| |
| |- arm/
| | `- src
| | `- <a href="https://bitbucket.org/nuttx/arch/src/master/arm/src/lpc214x/README.txt" target="_blank">lpc214x/README.txt</a>
| |- sh/
| | |- include/
| | | `-<a href="https://bitbucket.org/nuttx/arch/src/master/sh/include/README.txt" target="_blank">README.txt</a>
| | |- src/
| | | `-<a href="https://bitbucket.org/nuttx/arch/src/master/sh/src/README.txt" target="_blank">README.txt</a>
| |- x86/
| | |- include/
| | | `-<a href="https://bitbucket.org/nuttx/arch/src/master/x86/include/README.txt" target="_blank">README.txt</a>
| | `- src/
| | `-<a href="https://bitbucket.org/nuttx/arch/src/master/x86/src/README.txt" target="_blank">README.txt</a>
| |- z80/
| | |- src/z80
| | | `- <a href="https://bitbucket.org/nuttx/arch/src/master/z80/src/z80/README.txt" target="_blank">README.txt</a>
| | `- src/z180
| | |- <a href="https://bitbucket.org/nuttx/arch/src/master/z80/src/z180/README.txt" target="_blank">README.txt</a>
| | `- <a href="https://bitbucket.org/nuttx/arch/src/master/z80/src/z180/z180_mmu.txt" target="_blank">z180_mmu.txt</a>
| `- <a href="https://bitbucket.org/nuttx/arch/src/master/README.txt" target="_blank"><b><i>README.txt</i></b></a>
|- binfmt/
| |- libpcode/
| `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/binfmt/libpcode/README.txt" target="_blank"><b><i>README.txt</i></b></a>
|- audio/
| `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/audio/README.txt" target="_blank"><b><i>README.txt</i></b></a>
|- configs/
| |- amber/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/amber/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- arduino-mega2560/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/arduino-mega2560/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- arduino-due/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/arduino-due/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- avr32dev1/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/avr32dev1/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- c5471evm/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/c5471evm/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- cc3200-launchpad/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/cc3200-launchpad/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- cloudctrl/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/cloudctrl/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- compal_e86/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/compal_e86/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- compal_e88/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/compal_e88/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- compal_e99/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/compal_e99/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- demo9s12ne64/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/demo9s12ne64/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- dk-tm4c129x/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/dk-tm4c129x/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- ea3131/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/ea3131/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- ea3152/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/ea3152/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- eagle100/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/eagle100/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- efm32-g8xx-stk/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/efm32-g8xx-stk/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- efm32gg-stk3700/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/efm32gg-stk3700/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- ekk-lm3s9b96/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/ekk-lm3s9b96/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- ez80f910200kitg/
| | |- <a href="https://bitbucket.org/nuttx/boards/src/master/ez80f910200kitg/ostest/README.txt" target="_blank">ostest/README.txt</a>
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/ez80f910200kitg/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- ez80f910200zco/
| | |- <a href="https://bitbucket.org/nuttx/boards/src/master/ez80f910200zco/ostest/README.txt" target="_blank">dhcpd/README.txt</a>
| | |- <a href="https://bitbucket.org/nuttx/boards/src/master/ez80f910200zco/httpd/README.txt" target="_blank">httpd/README.txt</a>
| | |- <a href="https://bitbucket.org/nuttx/boards/src/master/ez80f910200zco/nettest/README.txt" target="_blank">nettest/README.txt</a>
| | |- <a href="https://bitbucket.org/nuttx/boards/src/master/ez80f910200zco/nsh/README.txt" target="_blank">nsh/README.txt</a>
| | |- <a href="https://bitbucket.org/nuttx/boards/src/master/ez80f910200zco/ostest/README.txt" target="_blank">ostest/README.txt</a>
| | |- <a href="https://bitbucket.org/nuttx/boards/src/master/ez80f910200zco/poll/README.txt" target="_blank">poll/README.txt</a>
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/ez80f910200zco/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- fire-stm32v2/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/fire-stm32v2/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- freedom-kl25z/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/freedom-kl25z/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- freedom-kl26z/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/freedom-kl26z/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- hymini-stm32v/
| | |- <a href="https://bitbucket.org/nuttx/boards/src/master/hymini-stm32v/RIDE/README.txt" target="_blank">RIDE/README.txt</a>
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/hymini-stm32v/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- kwikstik-k40/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/kwikstik-k40/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- launchxl-tms57004/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/launchxl-tms57004/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- lincoln60/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/lincoln60/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- lm3s6432-s2e/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/lm3s6432-s2e/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- lm3s6965-ek/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/lm3s6965-ek/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- lm3s8962-ek/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/lm3s8962-ek/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- lpc4330-xplorer/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/llpc4330-xplorer/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- lpc4337-ws/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/llpc4337-ws/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- lpc4357-evb/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/llpc4357-evb/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- lpc4370-link2/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/llpc4370-link2/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- lpcxpresso-lpc1115/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/lpcxpresso-lpc1115/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- lpcxpresso-lpc1768/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/lpcxpresso-lpc1768/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- maple/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/maple/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- mbed/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/mbed/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- mcu123-lpc214x/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/mcu123-lpc214x/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- micropendous3/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/micropendous3/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- mikroe-stm32f4/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/mikroe-stm32f4/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- mirtoo/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/mirtoo/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- mt-db-x3//
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/mt-db-x3//README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- moteino-mega/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/moteino-mega/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- mx1ads/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/mx1ads/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- ne64badge/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/ne64badge/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- ntosd-dm320/
| | |- <a href="https://bitbucket.org/nuttx/boards/src/master/ntosd-dm320/doc/README.txt" target="_blank">doc/README.txt</a>
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/ntosd-dm320/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- nucleo-f4x1re/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/nucleo-f4x1re/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- nucleus2g/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/nucleus2g/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- nutiny-nuc120/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/nutiny-nuc120/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- olimex-efm32g880f129-stk/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/olimex-efm32g880f129-stk/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- olimex-lpc1766stk/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/olimex-lpc1766stk/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- olimex-lpc2378/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/olimex-lpc2378/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- olimex-lpc-h3131/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/olimex-lpc-h3131/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- olimex-stm32-h405/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/olimex-stm32-h405/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- olimex-stm32-h407/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/olimex-stm32-h407/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- olimex-stm32-p107/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/olimex-stm32-p107/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- olimex-stm32-p207/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/olimex-stm32-p207/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- olimex-strp711/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/olimex-strp711/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- open1788/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/open1788/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- p112/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/p112/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- pcblogic-pic32mx/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/pcblogic-pic32mx/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- pcduino-a10/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/pcduino-pic32mx/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- pic32mx-starterkit/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/pic32mx-starterkit/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- pic32mx7mmb/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/pic32mx7mmb/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- pic32mz-starterkit/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/pic32mz-starterkit/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- pirelli_dpl10/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/pirelli_dpl10/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- qemu-i486/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/qemu-i486/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- rgmp/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/rgmp/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- sabre-6quad/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/sabre-6quad/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- sama5d2-xult/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/sama5d2-xult/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- sama5d3x-ek/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/sama5d3x-ek/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- sama5d3-xplained/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/sama5d3-xplained/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- sama5d4-ek/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/sama5d4-ek/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- samd20-xplained/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/samd20-xplained/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- samd21-xplained/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/samd21-xplained/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- saml21-xplained/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/saml21-xplained/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- sam3u-ek/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/sam3u-ek/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- sam4e-ek/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/sam4e-ek/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- sam4l-xplained/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/sam4l-xplained/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- sam4s-xplained/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/sam4s-xplained/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- sam4s-xplained-pro/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/sam4s-xplained-pro/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- same70-xplained/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/same70-xplained/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- samv71-xult/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/samv71-xult/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- shenzhou/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/shenzhou/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- sim/
| | |- <a href="https://bitbucket.org/nuttx/boards/src/master/sim/include/README.txt" target="_blank"><b><i>include/README.txt</i></b></a>
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/sim/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- skp16c26/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/skp16c26/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- spark/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/spark/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- stm3210e-eval/
| | |- <a href="https://bitbucket.org/nuttx/boards/src/master/stm3210e-eval/RIDE/README.txt" target="_blank">RIDE/README.txt</a>
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/stm3210e-eval/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- stm3220g-eval/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/stm3220g-eval/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- stm3240g-eval/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/stm3240g-eval/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- stm32_tiny/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/stm32_tiny/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- stm32f3discovery/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/stm32f3discovery/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- stm32f4discovery/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/stm32f4discovery/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- stm32f429i-disco/
| | |- <a href="https://bitbucket.org/nuttx/boards/src/master/stm32f429i-disco/ltdc/README.txt" target="_blank"><b><i>ltdc/README.txt</i></b></a>
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/stm32f429i-disco/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- stm32f746g-disco/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/stm32f746g-disco/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- stm32l476vg-disco/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/stm32l476vg-disco/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- stm32ldiscovery/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/stm32ldiscovery/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- stm32vldiscovery/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/stm32vldiscovery/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- sure-pic32mx/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/sure-pic32mx/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- teensy-2.0/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/teensy-2.0/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- teensy-3.1/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/teensy-3.1/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- teensy-lc/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/teensy-lc/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- tm4c123g-launchpad/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/tm4c123g-launchpad/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- tm4c1294-launchpad/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/tm4c1294-launchpad/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- twr-k60n512/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/twr-k60n512/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- "u-blox-c027/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/u-blox-c027/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- ubw32/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/ubw32/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- us7032evb1/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/us7032evb1/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- viewtool-stm32f107/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/viewtool-stm32f107/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- xtrs/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/xtrs/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- z16f2800100zcog/
| | |- <a href="https://bitbucket.org/nuttx/boards/src/master/xtrs/ostest/README.txt" target="_blank">ostest/README.txt</a>
| | |- <a href="https://bitbucket.org/nuttx/boards/src/master/xtrs/pashello/README.txt" target="_blank">pashello/README.txt</a>
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/xtrs/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- z80sim/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/z80sim/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- z8encore000zco/
| | |- <a href="https://bitbucket.org/nuttx/boards/src/master/z8encore000zco/ostest/README.txt" target="_blank">ostest/README.txt</a>
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/z8encore000zco/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- z8f64200100kit/
| | |- <a href="https://bitbucket.org/nuttx/boards/src/master/z8f64200100kit/ostest/README.txt" target="_blank">ostest/README.txt</a>
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/z8f64200100kit/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- zkit-arm-1769/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/zkit-arm-1769/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- zp214xpa/
| | `- <a href="https://bitbucket.org/nuttx/boards/src/master/zp214xpa/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| `- <a href="https://bitbucket.org/nuttx/boards/src/master/README.txt" target="_blank"><b><i>README.txt</i></b></a>
|- drivers/
| |- eeprom/
| | `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/drivers/eeprom/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- lcd/
| | `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/drivers/lcd/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- mtd/
| | `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/drivers/mtd/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- sensors/
| | `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/drivers/sensors/README.txt" target="_blank">README.txt</a>
| |- sercomm/
| | `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/drivers/sercomm/README.txt" target="_blank">README.txt</a>
| |- syslog/
| | `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/drivers/syslog/README.txt" target="_blank">README.txt</a>
| `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/drivers/README.txt" target="_blank"><b><i>README.txt</i></b></a>
|- fs/
| |- binfs/
| | `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/fs/binfs/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- mmap/
| | `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/fs/mmap/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- nxffs/
| | `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/fs/nxffs/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- smartfs/
| | `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/fs/smartfs/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| |- procfs/
| | `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/fs/procfs/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| `- unionfs/
| `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/fs/unionfs/README.txt" target="_blank"><b><i>README.txt</i></b></a>
|- graphics/
| `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/graphics/README.txt" target="_blank"><b><i>README.txt</i></b></a>
|- lib/
| `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/lib/README.txt" target="_blank">README.txt</a>
|- libc/
| `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/libc/README.txt" target="_blank"><b><i>README.txt</i></b></a>
|- libnx/
| `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/libnx/README.txt" target="_blank"><b><i>README.txt</i></b></a>
|- libxx/
| `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/libxx/README.txt" target="_blank"><b><i>README.txt</i></b></a>
|- mm/
| |- shm/
| | `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/mm/shm/README.txt" target="_blank"><b><i>README.txt</i></b></a>
| `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/mm/README.txt" target="_blank"><b><i>README.txt</i></b></a>
|- net/
| `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/net/README.txt" target="_blank"><b><i>README.txt</i></b></a>
|- syscall/
| `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/syscall/README.txt" target="_blank"><b><i>README.txt</i></b></a>
`- tools/
`- <a href="https://bitbucket.org/nuttx/nuttx/src/master/tools/README.txt" target="_blank"><b><i>README.txt</i></b></a>
</pre></ul>
<p>
Below is a guide to the available README files in the semi-optional <code>apps/</code> source tree:
</p>
<ul><pre>
apps/
|- <a href="https://bitbucket.org/nuttx/apps/src/master/README.txt" target="_blank"><b>README.txt</b></a>
|- examples/
| |- <a href="https://bitbucket.org/nuttx/apps/src/master/examples/bastest/README.txt" target="_blank">bastest/README.txt</a>
| |- <a href="https://bitbucket.org/nuttx/apps/src/master/examples/json/README.txt" target="_blank">json/README.txt</a>
| |- <a href="https://bitbucket.org/nuttx/apps/src/master/examples/pashello/README.txt" target="_blank">pashello/README.txt</a>
| `- <a href="https://bitbucket.org/nuttx/apps/src/master/examples/README.txt" target="_blank"><b><i>README.txt</i></b></a>
|- gpsutils/
| `- <a href="https://bitbucket.org/nuttx/apps/src/master/gpsutils/minmea/README.txt" target="_blank">"<b><i>minmea/README.txt</i></b></a>
|- graphics/
| `- <a href="https://bitbucket.org/nuttx/apps/src/master/graphics/tiff/README.txt" target="_blank">"<b><i>tiff/README.txt</i></b></a>
|- interpreters/
| |- <a href="https://bitbucket.org/nuttx/apps/src/master/interpreters/bas/README.txt" target="_blank"><b><i>bas/README.txt</i></b></a>
| |- <a href="https://bitbucket.org/nuttx/apps/src/master/interpreters/ficl/README.txt" target="_blank"><b><i>ficl/README.txt</i></b></a>
| `- <a href="https://bitbucket.org/nuttx/apps/src/master/interpreters/README.txt" target="_blank"><b><i>README.txt</i></b></a>
|- modbus/
| `- <a href="https://bitbucket.org/nuttx/apps/src/master/modbus/README.txt" target="_blank"><b><i>README.txt</i></b></a>
|- netutils/
| | |- <a href="https://bitbucket.org/nuttx/apps/src/master/netutils/discover/README.txt" target="_blank">discover/README.txt</a>
| | |- <a href="https://bitbucket.org/nuttx/apps/src/master/netutils/ftpc/README.txt" target="_blank">ftpc/README.txt</a>
| | |- <a href="https://bitbucket.org/nuttx/apps/src/master/netutils/json/README.txt" target="_blank">json/README.txt</a>
| | |- <a href="https://bitbucket.org/nuttx/apps/src/master/netutils/telnetd/README.txt" target="_blank">telnetd/README.txt</a>
| `- <a href="https://bitbucket.org/nuttx/apps/src/master/netutils/README.txt" target="_blank"><b><i>README.txt</i></b></a>
|- nshlib/
| `- <a href="https://bitbucket.org/nuttx/apps/src/master/nshlib/README.txt" target="_blank"><b><i>README.txt</i></b></a>
|- NxWidgets/
| `- <a href="https://bitbucket.org/nuttx/apps/src/master/NxWidgets/README.txt" target="_blank"><b><i>README.txt</i></b></a>
`- system/
|- <a href="https://bitbucket.org/nuttx/apps/src/master/system/cdcacm/README.txt" target="_blank"><b><i>cdcacm/README.txt</i></b></a>
|- <a href="https://bitbucket.org/nuttx/apps/src/master/system/i2c/README.txt" target="_blank"><b><i>i2c/README.txt</i></b></a>
|- <a href="https://bitbucket.org/nuttx/apps/src/master/system/inifile/README.txt" target="_blank">inifile/README.txt</a>
|- <a href="https://bitbucket.org/nuttx/apps/src/master/system/install/README.txt" target="_blank">install/README.txt</a>
|- <a href="https://bitbucket.org/nuttx/apps/src/master/system/nxplayer/README.txt" target="_blank"><b><i>nxplayer/README.txt</i></b></a>
|- <a href="https://bitbucket.org/nuttx/apps/src/master/system/symtab/README.txt" target="_blank"><b><i>symtab/README.txt</i></b></a>
|- <a href="https://bitbucket.org/nuttx/apps/src/master/system/usbmsc/README.txt" target="_blank">usbmsc/README.txt</a>
|- <a href="https://bitbucket.org/nuttx/apps/src/master/system/zmodem/README.txt" target="_blank">zmodem/README.txt</a>
`- <a href="https://bitbucket.org/nuttx/apps/src/master/system/zoneinfo/README.txt" target="_blank">zoneinfo/README.txt</a>
</pre></ul>
<p>
Additional README.txt files in the other, related repositories:
</p>
<ul><pre>
NxWidgets
|- Doxygen
| `- <a href="https://bitbucket.org/nuttx/nxwidgets/src/master/Doxygen/README.txt" target="_blank"><b><i>README.txt</i></b></a>
|- tools
| `- <a href="https://bitbucket.org/nuttx/nxwidgets/src/master/tools/README.txt" target="_blank"><b><i>README.txt</i></b></a>
|- UnitTests
| `- <a href="https://bitbucket.org/nuttx/nxwidgets/src/master/UnitTests/README.txt" target="_blank"><b><i>README.txt</i></b></a>
`- <a href="https://bitbucket.org/nuttx/nxwidgets/src/master/README.txt" target="_blank"><b><i>README.txt</i></b></a>
buildroot/
`- <a href="https://bitbucket.org/nuttx/buildroot/src/master/README.txt" target="_blank"><b><i>README.txt</i></b></a>
tools/
`- <a href="https://bitbucket.org/nuttx/tools/src/master/README.txt" target="_blank"><b><i>README.txt</i></b></a>
uClibc++/
`- <a href="https://bitbucket.org/nuttx/uclibc/src/master/README.txt" target="_blank"><b><i>README.txt</i></b></a>
pascal/
`- <a href="https://bitbucket.org/nuttx/pascal/src/master/README" target="_blank"><b><i>README</i></b></a>
</pre></ul>
</body>
</html>
Documentation/UsbTrace.html
+452
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@@ -0,0 +1,452 @@
<html>
<head>
<title>NuttX USB Trace Capability</title>
</head>
<body background="backgd.gif">
<hr><hr>
<table width ="100%">
<tr align="center" bgcolor="#e4e4e4">
<td>
<h1><big><font color="#3c34ec"><i>NuttX USB Device Trace</i></font></big></h1>
<p>Last Updated: March 20, 2011</p>
</td>
</tr>
</table>
<hr><hr>
<p><b>USB Device Tracing Controls</b>.
The NuttX USB device subsystem supports a fairly sophisticated tracing facility.
The basic trace cabability is controlled by these NuttX configuration settings:
</p>
<ul>
<li><code>CONFIG_USBDEV_TRACE</code>: Enables USB tracing</li>
<li><code>CONFIG_USBDEV_TRACE_NRECORDS</code>: Number of trace entries to remember</li>
</ul>
<p><b>Trace IDs</b>.
The trace facility works like this:
When enabled, USB events that occur in either the USB device driver or in the USB class driver are logged.
These events are described in <code>include/nuttx/usb/usbdev_trace.h</code>.
The logged events are identified by a set of event IDs:
</p>
<ul><table>
<tr>
<td><code>TRACE_INIT_ID</code></td>
<td>Initialization events</td>
</tr>
<tr>
<td><code>TRACE_EP_ID</code></td>
<td>Endpoint API calls</td>
</tr>
<tr>
<td><code>TRACE_DEV_ID</code></td>
<td>USB device API calls</td>
</tr>
<tr>
<td><code>TRACE_CLASS_ID</code></td>
<td>USB class driver API calls</td>
</tr>
<tr>
<td><code>TRACE_CLASSAPI_ID</code></td>
<td>Other class driver system API calls</td>
</tr>
<tr>
<td><code>TRACE_CLASSSTATE_ID</code></td>
<td>Track class driver state changes</td>
</tr>
<tr>
<td><code>TRACE_INTENTRY_ID</code></td>
<td>Interrupt handler entry</td>
</tr>
<tr>
<td><code>TRACE_INTDECODE_ID</code></td>
<td>Decoded interrupt event</td>
</tr>
<tr>
<td><code>TRACE_INTEXIT_ID</code></td>
<td>Interrupt handler exit</td>
</tr>
<tr>
<td><code>TRACE_OUTREQQUEUED_ID</code></td>
<td>Request queued for OUT endpoint</td>
</tr>
<tr>
<td><code>TRACE_INREQQUEUED_ID</code></td>
<td>Request queued for IN endpoint</td>
</tr>
<tr>
<td><code>TRACE_READ_ID</code></td>
<td>Read (OUT) action</td>
</tr>
<tr>
<td><code>TRACE_WRITE_ID</code></td>
<td>Write (IN) action</td>
</tr>
<tr>
<td><code>TRACE_COMPLETE_ID</code></td>
<td>Request completed</td>
</tr>
<tr>
<td><code>TRACE_DEVERROR_ID</code></td>
<td>USB controller driver error event</td>
</tr>
<tr>
<td><code>TRACE_CLSERROR_ID</code></td>
<td>USB class driver error event</td>
</tr>
</table></ul>
<p><b>Logged Events</b>.
Each logged event is 32-bits in size and includes
</p>
<ol>
<li>8-bits of the trace ID (values associated with the above)</li>
<li>8-bits of additional trace ID data, and</li>
<li>16-bits of additonal data.</li>
</ol>
<p><b>8-bit Trace Data</b>
The 8-bit trace data depends on the specific event ID. As examples,
</p>
<ul>
<li>
For the USB serial and mass storage class, the 8-bit event data is provided in <code>include/nuttx/usb/usbdev_trace.h</code>.
</li>
<li>
For the USB device driver, that 8-bit event data is provided within the USB device driver itself.
So, for example, the 8-bit event data for the LPC1768 USB device driver is found in <code>arch/arm/src/lpc17xx/lpc17_usbdev.c</code>.
</li>
</ul>
<p><b>16-bit Trace Data</b>.
The 16-bit trace data provided additional context data relevant to the specific logged event.
</p>
<p><b>Trace Control Interfaces</b>.
Logging of each of these kinds events can be enabled or disabled using the interfaces described in <code>include/nuttx/usb/usbdev_trace.h</code>.
</p>
<p><b>Enabling USB Device Tracing</b>.
USB device tracing will be configured if <code>CONFIG_USBDEV</code> and either of the following are set in the NuttX configuration file:
</p>
<ul>
<li><code>CONFIG_USBDEV_TRACE</code>, or</li>
<li><code>CONFIG_DEBUG and CONFIG_DEBUG_USB</code></li>
</ul>
<p><b>Log Data Sink</b>.
The logged data itself may go to either (1) an internal circular buffer, or (2) may be provided on the console.
If <code>CONFIG_USBDEV_TRACE</code> is defined, then the trace data will go to the circular buffer.
The size of the circular buffer is determined by <code>CONFIG_USBDEV_TRACE_NRECORDS</code>.
Otherwise, the trace data goes to console.
<p>
<p><b>Example</b>.
Here is an example of USB trace output using <code>apps/examples/usbserial</code> for an LPC1768 platform with the following NuttX configuration settings:
</p>
<ul>
<li><code>CONFIG_DEBUG</code>, <code>CONFIG_DEBUG_VERBOSE</code>, <code>CONFIG_USB</code>
<li><code>CONFIG_EXAMPLES_USBSERIAL_TRACEINIT</code>, <code>CONFIG_EXAMPLES_USBSERIAL_TRACECLASS</code>,
<code>CONFIG_EXAMPLES_USBSERIAL_TRACETRANSFERS</code>, <code>CONFIG_EXAMPLES_USBSERIAL_TRACECONTROLLER</code>,
<code>CONFIG_EXAMPLES_USBSERIAL_TRACEINTERRUPTS</code>
</ul>
<p>Console Output:</p>
<ul><table>
<tr>
<td align="center">&nbsp;</td>
<td align="left"><code>ABDE</code></td>
</tr>
<tr>
<td align="center">&nbsp;</td>
<td align="left"><code>usbserial_main: Registering USB serial driver</code></td>
</tr>
<tr>
<td align="center">&nbsp;</td>
<td align="left"><code>uart_register: Registering /dev/ttyUSB0</code></td>
</tr>
<tr>
<td align="center">&nbsp;</td>
<td align="left"><code>usbserial_main: Successfully registered the serial driver</code></td>
</tr>
<tr>
<td align="center">1</td>
<td align="left"><code>Class API call 1: 0000</code></td>
</tr>
<tr>
<td align="center">2</td>
<td align="left"><code>Class error: 19:0000</code></td>
</tr>
<tr>
<td align="center">&nbsp;</td>
<td align="left"><code>usbserial_main: ERROR: Failed to open /dev/ttyUSB0 for reading: 107</code></td>
</tr>
<tr>
<td align="center">&nbsp;</td>
<td align="left"><code>usbserial_main: Not connected. Wait and try again.</code></td>
</tr>
<tr>
<td align="center">3</td>
<td align="left"><code>Interrupt 1 entry: 0039</code></td>
</tr>
<tr>
<td align="center">4</td>
<td align="left"><code>Interrupt decode 7: 0019</code></td>
</tr>
<tr>
<td align="center">5</td>
<td align="left"><code>Interrupt decode 32: 0019</code></td>
</tr>
<tr>
<td align="center">6</td>
<td align="left"><code>Interrupt decode 6: 0019</code></td>
</tr>
<tr>
<td align="center">7</td>
<td align="left"><code>Class disconnect(): 0000</code></td>
</tr>
<tr>
<td align="center">8</td>
<td align="left"><code>Device pullup(): 0001</code></td>
</tr>
<tr>
<td align="center">9</td>
<td align="left"><code>Interrupt 1 exit: 0000</code></td>
</tr>
</table></ul>
<p>
The numbered items are USB USB trace output.
You can look in the file <code>drivers/usbdev/usbdev_trprintf.c</code> to see examctly how each output line is formatted.
Here is how each line should be interpreted:
</p>
<ul><table>
<tr>
<th align="center">&nbsp</th>
<td align="left">USB EVENT ID</td>
<td align="right">8-bit<br>EVENT<br>DATA</td>
<td align="left">MEANING</td>
<td align="left">16-bit<br>EVENT<br>DATA</td>
</tr>
<tr>
<td align="center">1</td>
<td align="left"><code>TRACE_CLASSAPI_ID</code><sup>1</sup></td>
<td align="right">1</td>
<td align="left"><code>USBSER_TRACECLASSAPI_SETUP</code><sup>1</sup></td>
<td align="left">0000</td>
</tr>
<tr>
<td align="center">2</td>
<td align="left"><code>TRACE_CLSERROR_ID</code><sup>1</sup></td>
<td align="right">19</td>
<td align="left"><code>USBSER_TRACEERR_SETUPNOTCONNECTED</code><sup>1</sup></td>
<td align="left">0000</td>
</tr>
<tr>
<td align="center">3</td>
<td align="left"><code>TRACE_INTENTRY_ID</code><sup>1</sup></td>
<td align="right">1</td>
<td align="left"><code>LPC17_TRACEINTID_USB</code><sup>2</sup></td>
<td align="left">0039</td>
</tr>
<tr>
<td align="center">4</td>
<td align="left"><code>TRACE_INTDECODE_ID</code><sup>2</sup></td>
<td align="right">7</td>
<td align="left"><code>LPC17_TRACEINTID_DEVSTAT</code><sup>2</sup></td>
<td align="left">0019</td>
</tr>
<tr>
<td align="center">5</td>
<td align="left"><code>TRACE_INTDECODE_ID</code><sup>2</sup></td>
<td align="right">32</td>
<td align="left"><code>LPC17_TRACEINTID_SUSPENDCHG</code><sup>2</sup></td>
<td align="left">0019</td>
</tr>
<tr>
<td align="center">6</td>
<td align="left"><code>TRACE_INTDECODE_ID</code><sup>2</sup></td>
<td align="right">6</td>
<td align="left"><code>LPC17_TRACEINTID_DEVRESET</code><sup>2</sup></td>
<td align="left">0019</td>
</tr>
<tr>
<td align="center">7</td>
<td align="left"><code>TRACE_CLASS_ID</code><sup>1</sup></td>
<td align="right">3</td>
<td align="left"><code>(See TRACE_CLASSDISCONNECT</code><sup>1</sup>)</td>
<td align="left">0000</td>
</tr>
<tr>
<td align="center">8</td>
<td align="left"><code>TRACE_DEV_ID</code><sup>1</sup></td>
<td align="right">6</td>
<td align="left"><code>(See TRACE_DEVPULLUP</code><sup>1</sup>)</td>
<td align="left">0001</td>
</tr>
<tr>
<td align="center">9</td>
<td align="left"><code>TRACE_INTEXIT_ID</code><sup>1</sup></td>
<td align="right">1</td>
<td align="left"><code>LPC17_TRACEINTID_USB</code><sup>2</sup></td>
<td align="left">0000</td>
</tr>
</table>
<p><small><b>NOTES</b>:<br>
<sup>1</sup>See <code>include/nuttx/usb/usbdev_trace.h</code><br>
<sup>2</sup><code>See arch/arm/src/lpc17xx/lpc17_usbdev.c</code>
</small></p>
</ul>
<p>
In the above example you can see that:
</p>
<ul>
<li><b>1</b>.
The serial class USB setup method was called for the USB serial class.
This is the corresponds to the following logic in <code>drivers/usbdev/pl2303.c</code>:
<ul><pre>
static int pl2303_setup(FAR struct uart_dev_s *dev)
{
...
usbtrace(PL2303_CLASSAPI_SETUP, 0);
...
</pre></ul>
</li>
<li><b>2</b>.
An error occurred while processing the setup command because no configuration has yet been selected by the host.
This corresponds to the following logic in <code>drivers/usbdev/pl2303.c</code>:
<ul><pre>
static int pl2303_setup(FAR struct uart_dev_s *dev)
{
...
/* Check if we have been configured */
if (priv->config == PL2303_CONFIGIDNONE)
{
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_SETUPNOTCONNECTED), 0);
return -ENOTCONN;
}
...
</pre></ul>
<li><b>3-6</b>.
Here is a USB interrupt that suspends and resets the device.
</li>
<li><b>7-8</b>.
During the interrupt processing the serial class is disconnected
</li>
<li><b>9</b>.
And the interrupt returns
</li>
</ul>
<p><b>USB Monitor</b>.
The <i>USB monitor</i> is an application in the <code>apps/system/usbmonitor</code> that provides a convenient way to get debug trace output.
If tracing is enabled, the USB device will save encoded trace output in in-memory buffer;
if the USB monitor is also enabled, that trace buffer will be periodically emptied and dumped to the
system logging device (the serial console in most configurations).
The following are some of the relevant configuration options:
</p>
<ul>
<table width="100%">
<tr>
<td colspan="2" align="left" valign="top" bgcolor="#e4e4e4">
<i>Device Drivers -&gt; USB Device Driver Support</i>
</td>
</tr>
<tr>
<td width="30%" align="left" valign="top">
<code>CONFIG_USBDEV_TRACE=y</code>
</td>
<td align="left" valign="top">
Enable USB trace feature
</td>
</tr>
<tr>
<td width="30%" align="left" valign="top">
<code>CONFIG_USBDEV_TRACE_NRECORDS=<i>nnnn</i></code>
</td>
<td align="left" valign="top">
Buffer <i>nnnn</i> records in memory.
If you lose trace data, then you will need to increase the size of this buffer
(or increase the rate at which the trace buffer is emptied).
</td>
</tr>
<td width="30%" align="left" valign="top">
<code>CONFIG_USBDEV_TRACE_STRINGS=y</code>
</td>
<td align="left" valign="top">
Optionally, convert trace ID numbers to strings.
This feature may not be supported by all drivers.
</td>
<tr>
<td colspan="2" align="left" valign="top" bgcolor="#e4e4e4">
<i>Application Configuration -&gt; NSH LIbrary</i>
</td>
</tr>
<tr>
<td width="30%" align="left" valign="top">
<code>CONFIG_NSH_USBDEV_TRACE=n</code>
</td>
<td align="left" valign="top">
Make sure that any built-in tracing from NSH is disabled.
</td>
</tr>
<tr>
<td width="30%" align="left" valign="top">
<code>CONFIG_NSH_ARCHINIT=y</code>
</td>
<td align="left" valign="top">
Enable this option <i>only</i> if your board-specific logic has logic to automatically start the USB monitor.
Otherwise the USB monitor can be started or stopped with the <code>usbmon_start</code> and <code>usbmon_stop</code> commands from the NSH console.
</td>
</tr>
<tr>
<td colspan="2" align="left" valign="top" bgcolor="#e4e4e4">
<i>Application Configuration -&gt; System NSH Add-Ons</i>
</td>
</tr>
<tr>
<td width="30%" align="left" valign="top">
<code>CONFIG_SYSTEM_USBMONITOR=y</code>
</td>
<td align="left" valign="top">
Enable the USB monitor daemon
</td>
</tr>
<tr>
<td width="30%" align="left" valign="top">
<code>CONFIG_SYSTEM_USBMONITOR_STACKSIZE=<i>nnnn</i></code>
</td>
<td align="left" valign="top">
Sets the USB monitor daemon stack size to <i>nnnn</i>.
The default is 2KiB.
</td>
</tr>
<tr>
<td width="30%" align="left" valign="top">
<code>CONFIG_SYSTEM_USBMONITOR_PRIORITY=50</code>
</td>
<td align="left" valign="top">
Sets the USB monitor daemon priority to <i>nnnn</i>.
This priority should be low so that it does not interfere with other operations, but not so low that you cannot dump the buffered USB data sufficiently rapidly.
The default is 50.
</td>
</tr>
<tr>
<td width="30%" align="left" valign="top">
<code>CONFIG_SYSTEM_USBMONITOR_INTERVAL=<i>nnnn</i></code>
</td>
<td align="left" valign="top">
Dump the buffered USB data every <i>nnnn</i> seconds.
If you lose buffered USB trace data, then dropping this value will help by increasing the rate at which the USB trace buffer is emptied.
</td>
</tr>
<tr>
<td width="30%" align="left" valign="top">
<code>CONFIG_SYSTEM_USBMONITOR_TRACEINIT=y</code><br>
<code>CONFIG_SYSTEM_USBMONITOR_TRACECLASS=y</code><br>
<code>CONFIG_SYSTEM_USBMONITOR_TRACETRANSFERS=y</code><br>
<code>CONFIG_SYSTEM_USBMONITOR_TRACECONTROLLER=y</code><br>
<code>CONFIG_SYSTEM_USBMONITOR_TRACEINTERRUPTS=y</code><br>
</td>
<td align="left" valign="top">
Selects which USB event(s) that you want to be traced.
</td>
</tr>
</table>
</ul>
<p>
NOTE: If USB debug output is also enabled, both outputs will appear on the serial console.
However, the debug output will be asynchronous with the trace output and, hence, difficult to interpret.
</p>
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AIC Advanced Interrupt Controller (Atmel SAM)
ADC Analog to Digital Conversion
ARP Address Resolution Protocol (networking)
BCH Block to Character
BINFMT Binary Format (Dynamic Loader)
CAN Controller Area Network
CP15 Coprocessor 15 (ARM)
DEVIF Device Interface (networking)
DAC Digital to Analog Conversion
DEV Device
DMA Direct Memory Access (hardware)
DMAC DMA Controller (hardware)
DRAM Dynamic RAM
FAT File Allocation Table (file systems)
FTL FLASH Translation Layer (MTD)
HSMCI High Speed Memory Card Interface (Atmel)
I/O Input/Output
IP Internet Protocol (version 4?) (networking)
IPv6 Internet Protocol Version 6 (networking)
IRQ Interrupt Request
I2C Inter-Integrated Circuit
I2S Inter IC Sound
ICMP Internet Control Message Protocol (networking)
IOB I/O Buffer (networking)
LIBC The "C" Library
MCI Memory Card Interface
MM Memory Management/Manager
MMAP Memory Map
MMC Multi-Media Card
MMCSD See MMC and SD
MTD Memory Technology Device
NFS Network File System
NETDEV Network Device (networking)
NSH NuttShell
NX NuttX, the NuttX Graphics server (graphics)
NXFFS NuttX Flash File System
NXWM The NuttX Window Manager (graphics)
PID Peripheral ID (Atmel SAM)
PWM Pulse Width Modulation
PKT "Raw" Packet socket (networking)
RAM Random Access Memory
RTC Real Time Clock
RTCC Real Time Clock/Calendar
SAIC Secure Advanced Interrupt Controller (Atmel SAM)
SD Secure Digital
SDIO Secure Digital I/O
SMC Static Memory Controller (hardware)
SPI Serial Periperhal Interface
TCP Transmission Control Protocol (networking)
TSC Touchscreen Controller
TWI Two-Wire Interface
UDP User Datagram Protocol (networking)
UART Universal Asynchronous Receiver/Transmitter
USB Universal Serial Bus
USART Universal Synchronous/Asynchronous Receiver/Transmitter
WDT Watchdog Timer
XDMAC Extended DMA Controller (Atmel)
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<head>
<title>The NuttX RTOS</title>
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<body background="backgd.gif">
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<tr align="center" bgcolor="#e4e4e4">
<td>
<h1><big><font color="#3c34ec"><i>The NuttX RTOS</i></font></big></h1>
</td>
</tr>
</table>
<hr><hr>
<big><center>
The NuttX RTOS web site has moved to <a href="http://nuttx.org">nuttx.org</a>.
Please update your bookmarks and wait while you are redirected there.
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