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<a href="twisted.html">Package twisted</a> ::
<a href="twisted.protocols.html">Package protocols</a> ::
<a href="twisted.protocols.gps.html">Package gps</a> ::
Module nmea
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<!-- =========== START OF MODULE DESCRIPTION =========== -->
<h2 class="module">Module twisted.protocols.gps.nmea</h2>
<p>NMEA 0183 implementation</p>
<p>Maintainer: <a href="mailto:bob@redivi.com">Bob Ippolito</a></p>
The following NMEA 0183 sentences are currently understood:
<pre class="literalblock">
GPGGA (fix)
GPGLL (position)
GPRMC (position and time)
GPGSA (active satellites)
</pre>
The following NMEA 0183 sentences require implementation:
<pre class="literalblock">
None really, the others aren't generally useful or implemented in most devices anyhow
</pre>
Other desired features:
<pre class="literalblock">
- A NMEA 0183 producer to emulate GPS devices (?)
</pre>
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<b><a href="twisted.protocols.gps.nmea.NMEAReceiver.html"><code>NMEAReceiver</code></a></b></td>
<td>This parses most common NMEA-0183 messages, presumably from a serial
GPS device at 4800 bps</td></tr>
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<th colspan="2">Exceptions</th></tr>
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<b><a href="twisted.protocols.gps.nmea.InvalidChecksum.html"><code>InvalidChecksum</code></a></b></td>
<td> </td></tr>
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<b><a href="twisted.protocols.gps.nmea.InvalidSentence.html"><code>InvalidSentence</code></a></b></td>
<td> </td></tr>
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<!-- =========== START OF VARIABLE SUMMARY =========== -->
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<th colspan="2">Variable Summary</th></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"><code>int</code></font></td>
<td><b><a href="twisted.protocols.gps.nmea.html#MODE_2D"><code>MODE_2D</code></a></b> = <span title="2">2 </span></td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"><code>int</code></font></td>
<td><b><a href="twisted.protocols.gps.nmea.html#MODE_3D"><code>MODE_3D</code></a></b> = <span title="3">3 </span></td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"><code>str</code></font></td>
<td><b><a href="twisted.protocols.gps.nmea.html#MODE_AUTO"><code>MODE_AUTO</code></a></b> = <span title="'A'"><code><span class="variable-quote">'</span>A<span class="variable-quote">'</span> </code>
</span></td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"><code>str</code></font></td>
<td><b><a href="twisted.protocols.gps.nmea.html#MODE_FORCED"><code>MODE_FORCED</code></a></b> = <span title="'M'"><code><span class="variable-quote">'</span>M<span class="variable-quote">'</span> </code>
</span></td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"><code>int</code></font></td>
<td><b><a href="twisted.protocols.gps.nmea.html#MODE_NOFIX"><code>MODE_NOFIX</code></a></b> = <span title="1">1 </span></td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"><code>int</code></font></td>
<td><b><a href="twisted.protocols.gps.nmea.html#POSFIX_DGPS"><code>POSFIX_DGPS</code></a></b> = <span title="2">2 </span></td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"><code>int</code></font></td>
<td><b><a href="twisted.protocols.gps.nmea.html#POSFIX_INVALID"><code>POSFIX_INVALID</code></a></b> = <span title="0">0 </span></td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"><code>int</code></font></td>
<td><b><a href="twisted.protocols.gps.nmea.html#POSFIX_PPS"><code>POSFIX_PPS</code></a></b> = <span title="3">3 </span></td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"><code>int</code></font></td>
<td><b><a href="twisted.protocols.gps.nmea.html#POSFIX_SPS"><code>POSFIX_SPS</code></a></b> = <span title="1">1 </span></td></tr>
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<th colspan="2">Variable Details</th></tr>
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<table width="100%" class="var-details" bgcolor="#e0e0e0"><tr><td>
<a name="MODE_2D"></a>
<h3>MODE_2D</h3>
<dl>
<dt></dt>
<dd>
<dl>
<dt><b>Type:</b></dt>
<dd>
<code>int</code>
</dd>
<span title="2"> <dt><b>Value:</b></dt>
<dd><table><tr><td>
<pre class="variable">
2 </pre>
</td></tr></table></dd>
</span> </dl>
</dd>
</dl></td></tr></table>
<table width="100%" class="var-details" bgcolor="#e0e0e0"><tr><td>
<a name="MODE_3D"></a>
<h3>MODE_3D</h3>
<dl>
<dt></dt>
<dd>
<dl>
<dt><b>Type:</b></dt>
<dd>
<code>int</code>
</dd>
<span title="3"> <dt><b>Value:</b></dt>
<dd><table><tr><td>
<pre class="variable">
3 </pre>
</td></tr></table></dd>
</span> </dl>
</dd>
</dl></td></tr></table>
<table width="100%" class="var-details" bgcolor="#e0e0e0"><tr><td>
<a name="MODE_AUTO"></a>
<h3>MODE_AUTO</h3>
<dl>
<dt></dt>
<dd>
<dl>
<dt><b>Type:</b></dt>
<dd>
<code>str</code>
</dd>
<span title="'A'"> <dt><b>Value:</b></dt>
<dd><table><tr><td>
<pre class="variable">
<span class="variable-quote">'</span>A<span class="variable-quote">'</span> </pre>
</td></tr></table></dd>
</span> </dl>
</dd>
</dl></td></tr></table>
<table width="100%" class="var-details" bgcolor="#e0e0e0"><tr><td>
<a name="MODE_FORCED"></a>
<h3>MODE_FORCED</h3>
<dl>
<dt></dt>
<dd>
<dl>
<dt><b>Type:</b></dt>
<dd>
<code>str</code>
</dd>
<span title="'M'"> <dt><b>Value:</b></dt>
<dd><table><tr><td>
<pre class="variable">
<span class="variable-quote">'</span>M<span class="variable-quote">'</span> </pre>
</td></tr></table></dd>
</span> </dl>
</dd>
</dl></td></tr></table>
<table width="100%" class="var-details" bgcolor="#e0e0e0"><tr><td>
<a name="MODE_NOFIX"></a>
<h3>MODE_NOFIX</h3>
<dl>
<dt></dt>
<dd>
<dl>
<dt><b>Type:</b></dt>
<dd>
<code>int</code>
</dd>
<span title="1"> <dt><b>Value:</b></dt>
<dd><table><tr><td>
<pre class="variable">
1 </pre>
</td></tr></table></dd>
</span> </dl>
</dd>
</dl></td></tr></table>
<table width="100%" class="var-details" bgcolor="#e0e0e0"><tr><td>
<a name="POSFIX_DGPS"></a>
<h3>POSFIX_DGPS</h3>
<dl>
<dt></dt>
<dd>
<dl>
<dt><b>Type:</b></dt>
<dd>
<code>int</code>
</dd>
<span title="2"> <dt><b>Value:</b></dt>
<dd><table><tr><td>
<pre class="variable">
2 </pre>
</td></tr></table></dd>
</span> </dl>
</dd>
</dl></td></tr></table>
<table width="100%" class="var-details" bgcolor="#e0e0e0"><tr><td>
<a name="POSFIX_INVALID"></a>
<h3>POSFIX_INVALID</h3>
<dl>
<dt></dt>
<dd>
<dl>
<dt><b>Type:</b></dt>
<dd>
<code>int</code>
</dd>
<span title="0"> <dt><b>Value:</b></dt>
<dd><table><tr><td>
<pre class="variable">
0 </pre>
</td></tr></table></dd>
</span> </dl>
</dd>
</dl></td></tr></table>
<table width="100%" class="var-details" bgcolor="#e0e0e0"><tr><td>
<a name="POSFIX_PPS"></a>
<h3>POSFIX_PPS</h3>
<dl>
<dt></dt>
<dd>
<dl>
<dt><b>Type:</b></dt>
<dd>
<code>int</code>
</dd>
<span title="3"> <dt><b>Value:</b></dt>
<dd><table><tr><td>
<pre class="variable">
3 </pre>
</td></tr></table></dd>
</span> </dl>
</dd>
</dl></td></tr></table>
<table width="100%" class="var-details" bgcolor="#e0e0e0"><tr><td>
<a name="POSFIX_SPS"></a>
<h3>POSFIX_SPS</h3>
<dl>
<dt></dt>
<dd>
<dl>
<dt><b>Type:</b></dt>
<dd>
<code>int</code>
</dd>
<span title="1"> <dt><b>Value:</b></dt>
<dd><table><tr><td>
<pre class="variable">
1 </pre>
</td></tr></table></dd>
</span> </dl>
</dd>
</dl></td></tr></table>
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