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| author | Jacob McDonnell <jacob@jacobmcdonnell.com> | 2026-04-25 19:59:05 -0400 |
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| committer | Jacob McDonnell <jacob@jacobmcdonnell.com> | 2026-04-25 19:59:05 -0400 |
| commit | 1f19f33e45791ea59aed048796fc68672c6723a5 (patch) | |
| tree | 54625fba89e91d1c2177801ec635e8528bba937f /static/freebsd/man4/led.4 4.html | |
| parent | ac5e55f5f2af5b92794c2aded46c6bae85b5f5ed (diff) | |
docs: Removed Precompiled HTML
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diff --git a/static/freebsd/man4/led.4 4.html b/static/freebsd/man4/led.4 4.html deleted file mode 100644 index 65f29ef0..00000000 --- a/static/freebsd/man4/led.4 4.html +++ /dev/null @@ -1,179 +0,0 @@ -<table class="head"> - <tr> - <td class="head-ltitle">LED(4)</td> - <td class="head-vol">Device Drivers Manual</td> - <td class="head-rtitle">LED(4)</td> - </tr> -</table> -<div class="manual-text"> -<section class="Sh"> -<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1> -<p class="Pp"><code class="Nm">led</code> — <span class="Nd">API for - manipulating LED's, lamps and other annunciators</span></p> -</section> -<section class="Sh"> -<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1> -<p class="Pp"><code class="In">#include - <<a class="In">dev/led/led.h</a>></code></p> -<p class="Pp"> - <br/> - <code class="Fd">typedef void led_t(void *priv, int onoff);</code></p> -<p class="Pp"><var class="Ft">struct cdev *</var> - <br/> - <code class="Fn">led_create_state</code>(<var class="Fa" style="white-space: nowrap;">led_t - *func</var>, <var class="Fa" style="white-space: nowrap;">void *priv</var>, - <var class="Fa" style="white-space: nowrap;">char const *name</var>, - <var class="Fa" style="white-space: nowrap;">int state</var>);</p> -<p class="Pp"><var class="Ft">struct cdev *</var> - <br/> - <code class="Fn">led_create</code>(<var class="Fa" style="white-space: nowrap;">led_t - *func</var>, <var class="Fa" style="white-space: nowrap;">void *priv</var>, - <var class="Fa" style="white-space: nowrap;">char const *name</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">led_destroy</code>(<var class="Fa" style="white-space: nowrap;">struct - cdev *</var>);</p> -</section> -<section class="Sh"> -<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1> -<p class="Pp">The <code class="Nm">led</code> driver provides generic support - for handling LEDs, lamps and other annunciators.</p> -<p class="Pp">The hardware driver must supply a function to turn the annunciator - on and off and the device <var class="Fa">name</var> of the annunciator - relative to <span class="Pa">/dev/led/</span>. The - <var class="Fa">priv</var> argument is passed back to this on/off function - and can be used however the hardware driver sees fit.</p> -<p class="Pp">The lamp can be controlled by opening and writing ASCII strings to - the <span class="Pa">/dev/led/bla</span> device.</p> -<p class="Pp">In the following, we will use this special notation to indicate - the resulting output of the annunciator:</p> -<p class="Pp"></p> -<div class="Bd-indent"> -<dl class="Bl-tag Bl-compact"> - <dt id="*"><a class="permalink" href="#*"><code class="Ic">*</code></a></dt> - <dd>The annunciator is on for 1/10th second.</dd> - <dt id="_"><a class="permalink" href="#_"><code class="Ic">_</code></a></dt> - <dd>The annunciator is off for 1/10th second.</dd> -</dl> -</div> -<p class="Pp">State can be set directly, and since the change happens - immediately, it is possible to flash the annunciator with very short periods - and synchronize it with program events. It should be noted that there is a - non-trivial overhead, so this may not be usable for benchmarking or - measuring short intervals.</p> -<p class="Pp"></p> -<div class="Bd-indent"> -<dl class="Bl-tag Bl-compact"> - <dt id="0"><a class="permalink" href="#0"><code class="Ic">0</code></a></dt> - <dd>Turn the annunciator off immediately.</dd> - <dt id="1"><a class="permalink" href="#1"><code class="Ic">1</code></a></dt> - <dd>Turn the annunciator on immediately.</dd> -</dl> -</div> -<p class="Pp">Flashing can be set with a given period. The pattern continues - endlessly.</p> -<p class="Pp"></p> -<div class="Bd-indent"> -<dl class="Bl-tag Bl-compact"> - <dt id="f"><a class="permalink" href="#f"><code class="Ic">f</code></a></dt> - <dd>_*</dd> - <dt id="f1"><a class="permalink" href="#f1"><code class="Ic">f1</code></a></dt> - <dd>_*</dd> - <dt id="f2"><a class="permalink" href="#f2"><code class="Ic">f2</code></a></dt> - <dd>__**</dd> - <dt id="f3"><a class="permalink" href="#f3"><code class="Ic">f3</code></a></dt> - <dd>___***</dd> - <dt>...</dt> - <dd style="width: auto;"> </dd> - <dt id="f9"><a class="permalink" href="#f9"><code class="Ic">f9</code></a></dt> - <dd>_________*********</dd> -</dl> -</div> -<p class="Pp">Three high-level commands are available:</p> -<div class="Bd-indent"> -<dl class="Bl-tag"> - <dt id="d_d"><a class="permalink" href="#d_d"><code class="Ic">d%d</code></a></dt> - <dd>Numbers. Each digit is blinked out at 1/10th second, zero as ten pulses. - Between digits a one second pause and after the last digit a two second - pause after which the sequence is repeated.</dd> - <dt id="s_s"><a class="permalink" href="#s_s"><code class="Ic">s%s</code></a></dt> - <dd>String. This gives full control over the annunciator. Letters - ‘<code class="Li">A</code>’ <span class="No">...</span> - ‘<code class="Li">J</code>’ turn the annunciator on for from - 1/10th to one full second. Letters - ‘<code class="Li">a</code>’ <span class="No">...</span> - ‘<code class="Li">j</code>’ turn the annunciator off for - 1/10th to one full second. Letters - ‘<code class="Li">u</code>’ and - ‘<code class="Li">U</code>’ turn the annunciator off and on - respectively when the next UTC second starts. Unless terminated with a - ‘<code class="Li">.</code>’, the sequence is immediately - repeated.</dd> - <dt id="m_s"><a class="permalink" href="#m_s"><code class="Ic">m%s</code></a></dt> - <dd>Morse. - <p class="Pp"></p> - <div class="Bd-indent"> - <dl class="Bl-tag Bl-compact"> - <dt>‘<code class="Li">.</code>’</dt> - <dd>becomes ‘<code class="Li">_*</code>’</dd> - <dt>‘<code class="Li">-</code>’</dt> - <dd>becomes ‘<code class="Li">_***</code>’</dd> - <dt>‘<code class="Li"> </code>’</dt> - <dd>becomes ‘<code class="Li">__</code>’</dd> - <dt>‘<code class="Li">\n</code>’</dt> - <dd>becomes ‘<code class="Li">____</code>’</dd> - </dl> - </div> - </dd> -</dl> -</div> -<p class="Pp">The sequence is repeated after a one second pause.</p> -</section> -<section class="Sh"> -<h1 class="Sh" id="FILES"><a class="permalink" href="#FILES">FILES</a></h1> -<dl class="Bl-tag"> - <dt><span class="Pa">/dev/led/*</span></dt> - <dd style="width: auto;"> </dd> -</dl> -</section> -<section class="Sh"> -<h1 class="Sh" id="EXAMPLES"><a class="permalink" href="#EXAMPLES">EXAMPLES</a></h1> -<p class="Pp">A ‘<code class="Li">d12</code>’ flashes the lamp</p> -<p class="Pp"></p> -<div class="Bd - Bd-indent"><code class="Li">*__________*_*______________________________</code></div> -<p class="Pp">A ‘<code class="Li">sAaAbBa</code>’ flashes</p> -<p class="Pp"></p> -<div class="Bd Bd-indent"><code class="Li">*_*__**_</code></div> -<div class="Bd Pp Li"> -<pre>/usr/bin/morse -l "Soekris rocks" > /dev/led/error</pre> -</div> -</section> -<section class="Sh"> -<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE - ALSO</a></h1> -<p class="Pp"><a class="Xr">morse(6)</a></p> -</section> -<section class="Sh"> -<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1> -<p class="Pp">The <code class="Nm">led</code> driver first appeared in - <span class="Ux">FreeBSD 5.2</span>.</p> -</section> -<section class="Sh"> -<h1 class="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1> -<p class="Pp">This software was written by <span class="An">Poul-Henning - Kamp</span> - <<a class="Mt" href="mailto:phk@FreeBSD.org">phk@FreeBSD.org</a>>.</p> -<p class="Pp">This manual page was written by <span class="An">Sergey A. - Osokin</span> - <<a class="Mt" href="mailto:osa@FreeBSD.org">osa@FreeBSD.org</a>> and - <span class="An">Poul-Henning Kamp</span> - <<a class="Mt" href="mailto:phk@FreeBSD.org">phk@FreeBSD.org</a>>.</p> -</section> -</div> -<table class="foot"> - <tr> - <td class="foot-date">April 24, 2007</td> - <td class="foot-os">FreeBSD 15.0</td> - </tr> -</table> |