<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"><head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <meta name="keywords" content="9p, 9p2000, research, Plan 9, Inferno, Unix, Open Source, Bell Labs" /> <meta name="description" content="Open source distributed operating system Plan 9 from Bell Labs." /> <link rel="stylesheet" href="/wiki-style.css" media="all" type="text/css" /> <title>Raspberry Pi (Diff)</title></head><body><h1><a name="top"></a>Raspberry Pi <i>-Diff-</i></h1><div class='body'> <!-- ***************************** --><hr /><div class='diff_head'><a href="index.html">Fri Mar 29 15:17:06 EDT 2013</a>, a</div><hr />Plan9runsonthevariousRaspberryPimodels.Theportisstableandperformsreasonably,butthereismoreworktobedone.<a name="TODO" /><h3>TODO</h3><p class='para'>TheRaspberryPicontainsalotofinterestingbitsthatwearen'tyetdoinganythingwith.Here'sa(moreorlesscomplete)listofthingswe'dliketoseedone,withsomeinfooneach.</p><p class='para'>Thebeststartingpointforan<a href="http://elinux.org/RPi_Low-level_peripherals">overviewofthePi'shardwarecapabilities</a>isontheirwiki.</p><ul><li><a href="http://elinux.org/RPi_Low-level_peripherals#General_Purpose_Input.2FOutput_.28GPIO.29">GPIO</a></li></ul><p class='para'>BakulShahhasbeenworkingonaGPIOdriverforthePi.</p><ul><li>I²C</li><li>I²S</li><li>audio</li><li>pwm</li><li>spi</li></ul><ul><li><a href="http://www.mipi.org/specifications/display-interface">DSI</a>&<a href="http://www.mipi.org/specifications/camera-interface">CSI-2</a></li></ul><p class='para'>Thesearedisplayandcamerainterfaces,locatedatS2andS5onthePi,respectively.ThesearenotwidelysupportedonthevarioussystemswhichrunonthePi,andcompatiblehardwareisnotverycommon.Compatibledisplayscanbefoundinsomesmartphones.</p><hr></div> <!-- ***************************** --><hr class='banner_sep' /><div class='banner'><ul> <li><a href="../plan_9_wiki/">Wiki</a></li> <li><a href="../Documentation/">Docs</a></li> <li><a href="../news/">News</a></li> <li><a href="../development/">Devel</a></li> <li><a href="../papers/">Papers</a></li> <li><a href="../download/">Download</a></li></ul></div><hr class='footer_sep' /><div class='footer'> <a href="./">Current Page</a> - <span class='last_mod'>Last modified Fri Mar 29 15:17:06 EDT 2013</span><br /> <div class='about_wiki'><a href="http://plan9.bell-labs.com/plan9"><img align="middle" src="http://plan9.bell-labs.com/plan9/img/power36.gif" alt="Powered by Plan 9" /></a> <a href="../about.html">About this Wiki</a> </div></div></body></html>
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<title>Raspberry Pi (Diff)</title>
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<h1><a name="top"></a>
Raspberry Pi <i>-Diff-</i></h1>
<div class='body'> <!-- ***************************** -->
<hr /><div class='diff_head'>
<a href="index.html">Fri Mar 29 15:17:06 EDT 2013</a>, a
</div><hr />Plan
9
runs
on
the
various
Raspberry
Pi
models.
The
port
is
stable
and
performs
reasonably,
but
there
is
more
work
to
be
done.
<a name="TODO" /><h3>TODO</h3>
<p class='para'>
The
Raspberry
Pi
contains
a
lot
of
interesting
bits
that
we
aren't
yet
doing
anything
with.
Here's
a
(more
or
less
complete)
list
of
things
we'd
like
to
see
done,
with
some
info
on
each.
</p>
<p class='para'>
The
best
starting
point
for
an
<a href="http://elinux.org/RPi_Low-level_peripherals">overview
of
the
Pi's
hardware
capabilities</a>
is
on
their
wiki.
</p>
<ul>
<li>
<a href="http://elinux.org/RPi_Low-level_peripherals#General_Purpose_Input.2FOutput_.28GPIO.29">GPIO</a>
</li>
</ul>
<p class='para'>
Bakul
Shah
has
been
working
on
a
GPIO
driver
for
the
Pi.
</p>
<ul>
<li>
I²C
</li>
<li>
I²S
</li>
<li>
audio
</li>
<li>
pwm
</li>
<li>
spi
</li>
</ul>
<ul>
<li>
<a href="http://www.mipi.org/specifications/display-interface">DSI</a>
&
<a href="http://www.mipi.org/specifications/camera-interface">CSI-2</a>
</li>
</ul>
<p class='para'>
These
are
display
and
camera
interfaces,
located
at
S2
and
S5
on
the
Pi,
respectively.
These
are
not
widely
supported
on
the
various
systems
which
run
on
the
Pi,
and
compatible
hardware
is
not
very
common.
Compatible
displays
can
be
found
in
some
smartphones.
</p>
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