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Add support for the Sure DB-DP11212 PIC32 board

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4476 42af7a65-404d-4744-a932-0658087f49c3
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patacongo
2012-03-12 15:47:47 +00:00
parent e07258e203
commit ea7b658270
9 changed files with 266 additions and 30 deletions
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Documentation/NuttxPortingGuide.html
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<h1><big><font color="#3c34ec">
<i>NuttX RTOS Porting Guide</i>
</font></big></h1>
<p>Last Updated: March 3, 2011</p>
<p>Last Updated: March 11, 2011</p>
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</table>
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<a href="#usbdevdrivers">6.3.10 USB Device-Side Drivers</a><br>
<a href="#analogdrivers">6.3.11 Analog (ADC/DAC) Drivers</a><br>
<a href="#pwmdrivers">6.3.12 PWM Drivers</a><br>
<a href="#candrivers">6.3.13 CAN Drivers</a>
<a href="#candrivers">6.3.13 CAN Drivers</a><br>
<a href="#quadencoder">6.3.14 Quadrature Encoder Drivers</a>
</ul>
<a href="#pwrmgmt">6.4 Power Management</a>
<ul>
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</li>
</ul>
<h3><a name="quadencoder">6.3.14 Quadrature Encoder Drivers</a></h3>
<p>
NuttX supports only a low-level, two-part Quadrature Driver driver.
</p>
<ol>
<li>
An &quot;upper half&quot;, generic driver that provides the comman Quadrature Encoder interface to application level code, and
</li>
<li>
A &quot;lower half&quot;, platform-specific driver that implements the low-level timer controls to implement the Quadrature Encoder functionality.
</li>
</ol>
<p>
Files supporting the Quadrature Encoder can be found in the following locations:
</p>
<ul>
<li><b>Interface Definition</b>.
The header file for the NuttX Quadrature Encoder driver reside at <code>include/nuttx/sensors/qencoder.h</code>.
This header file includes both the application level interface to the Quadrature Encoder driver as well as the interface between the &quot;upper half&quot; and &quot;lower half&quot; drivers.
The Quadrature Encoder module uses a standard character driver framework.
</li>
<li><b>&quot;Upper Half&quot; Driver</b>.
The generic, &quot;upper half&quot; Quadrature Encoder driver resides at <code>drivers/sensors/qencoder.c</code>.
</li>
<li><b>&quot;Lower Half&quot; Drivers</b>.
Platform-specific Quadrature Encoder drivers reside in <code>arch/</code><i>&lt;architecture&gt;</i><code>/src/</code><i>&lt;chip&gt;</i> directory for the specific processor <i>&lt;architecture&gt;</i> and for the specific <i>&lt;chip&gt;</i> Quadrature Encoder peripheral devices.
</li>
</ul>
<h2><a name="pwrmgmt">6.4 Power Management</a></h2>
<h3><a name="pmoverview">6.4.1 Overview</a></h3>