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| author | Jacob McDonnell <jacob@jacobmcdonnell.com> | 2026-04-25 19:59:05 -0400 |
|---|---|---|
| committer | Jacob McDonnell <jacob@jacobmcdonnell.com> | 2026-04-25 19:59:05 -0400 |
| commit | 1f19f33e45791ea59aed048796fc68672c6723a5 (patch) | |
| tree | 54625fba89e91d1c2177801ec635e8528bba937f /static/netbsd/man4/man4.sun2/leds.4 3.html | |
| parent | ac5e55f5f2af5b92794c2aded46c6bae85b5f5ed (diff) | |
docs: Removed Precompiled HTML
Diffstat (limited to 'static/netbsd/man4/man4.sun2/leds.4 3.html')
| -rw-r--r-- | static/netbsd/man4/man4.sun2/leds.4 3.html | 95 |
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diff --git a/static/netbsd/man4/man4.sun2/leds.4 3.html b/static/netbsd/man4/man4.sun2/leds.4 3.html deleted file mode 100644 index 34c499d1..00000000 --- a/static/netbsd/man4/man4.sun2/leds.4 3.html +++ /dev/null @@ -1,95 +0,0 @@ -<table class="head"> - <tr> - <td class="head-ltitle">LEDS(4)</td> - <td class="head-vol">Device Drivers Manual (sun2)</td> - <td class="head-rtitle">LEDS(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">leds</code> — <span class="Nd">sun2 - diagnostic Light Emitting Diodes driver</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">machine/leds.h</a>></code></p> -</section> -<section class="Sh"> -<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1> -<p class="Pp">All sun2 machines are equipped a diagnostic display of eight Light - Emitting Diodes (LEDs), located on either the front (deskside chassis) or - the back (desktop machine) of the system unit.</p> -<p class="Pp">The kernel changes the display during periods of idle processor - activity according to a stored sequential pattern list. The - <span class="Pa">/dev/leds</span> interface provides a way of manipulating - the pattern list via simple file I/O.</p> -<p class="Pp">The structure of the file is as follows:</p> -<div class="Bd Pp Li"> -<pre>struct led_patterns { - u_char divisor; - u_char patlen; - u_char pat[256]; -};</pre> -</div> -<dl class="Bl-tag"> - <dt id="divisor"><a class="permalink" href="#divisor"><b class="Sy">divisor</b></a></dt> - <dd>The number of idle periods to wait before switching to the next pattern in - the array.</dd> - <dt id="patlen"><a class="permalink" href="#patlen"><b class="Sy">patlen</b></a></dt> - <dd>The number of patterns stored in the array.</dd> - <dt id="pat"><a class="permalink" href="#pat"><b class="Sy">pat</b></a></dt> - <dd>The array of patterns to display.</dd> -</dl> -<p class="Pp">When a clock interrupt occurs while the processor is idle, a - pattern countdown timer is decremented. When the countdown timer reaches - zero it is reset with the <b class="Sy">divisor</b> value and the next - pattern in the array is selected and displayed.</p> -<p class="Pp">Each 8-bit pattern describes the state of the diagnostic LEDs. A - set bit in a pattern indicates that its corresponding LED should be - extinguished, while a reset bit indicates an LED to be illuminated.</p> -</section> -<section class="Sh"> -<h1 class="Sh" id="FILES"><a class="permalink" href="#FILES">FILES</a></h1> -<dl class="Bl-tag Bl-compact"> - <dt><span class="Pa">/dev/leds</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">The following example uses <a class="Xr">awk(1)</a> to display the - repeating animation of a single lit LED scrolling from one end of the - display to the other, using six clock ticks between each update.</p> -<div class="Bd Pp Bd-indent"># echo 5 8 254 253 251 247 239 223 191 127 | -<br/> - awk '{ for (i=1;i<=NF;i++) printf("%c",$i+0); }' > - /dev/leds</div> -</section> -<section class="Sh"> -<h1 class="Sh" id="ERRORS"><a class="permalink" href="#ERRORS">ERRORS</a></h1> -<p class="Pp">An I/O transfer to <span class="Pa">/dev/leds</span> will complete - successfully unless:</p> -<dl class="Bl-tag"> - <dt id="EIO">[<a class="permalink" href="#EIO"><code class="Er">EIO</code></a>]</dt> - <dd>A read or write starting beyond the end of the file was attempted.</dd> -</dl> -</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">ppt(6)</a></p> -</section> -<section class="Sh"> -<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1> -<p class="Pp"><span class="Pa">/dev/leds</span> first appeared in - <span class="Ux">NetBSD 1.2</span>.</p> -</section> -</div> -<table class="foot"> - <tr> - <td class="foot-date">March 2, 1996</td> - <td class="foot-os">NetBSD 10.1</td> - </tr> -</table> |
