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pins.html
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<html>
<head>
<title>Wi-Node - Pins List</title>
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<body>
<div id="container">
<h1>Wi-Node - Pins List</h1>
<p>
<a href="/nanode">Return to index page</a>
</p>
<p>
<table border="1" cellspacing="0" cellpadding="4">
<tr>
<th> Pin </th>
<th> Description </th>
</tr>
<tr>
<td> Digital 0 </td>
<td> Serial RX </td>
</tr>
<tr>
<td> Digital 1 </td>
<td> Serial TX </td>
</tr>
<tr>
<td> Digital 2 </td>
<td> RFM12B Interrupt (INT 0) - <i>if installed</i></td>
</tr>
<tr>
<td> Digital 3 </td>
<td>
Interrupt / Wake Up Alarm Output from MCP7941x - <i>if installed</i><br />
Enable ports 3 & 4 on the L293D - <i>if installed and if JP4 is shorted between 2 and 3.</i>
</td>
</tr>
<tr>
<td> Digital 4 </td>
<td>
Slave Select for SD Card - <i>if installed</i><br />
Input 1 for L293D - <i>if installed</i>
</td>
</tr>
<tr>
<td> Digital 5 </td>
<td> Input 2 for L293D - <i>if installed</i> </td>
<tr>
<td> Digital 6 </td>
<td>
LED <br />
Input 3 for L293D - <i>if installed</i>
</td>
</tr>
<tr>
<td> Digital 7 </td>
<td> Input 4 for L293D - <i>if installed</i> </td>
</tr>
<tr>
<td> Digital 8 </td>
<td> <i> Spare and available for use </i> </td>
</tr>
<tr>
<td> Digital 9 </td>
<td>
Slave Select for 23K256 SRAM (DIP) - <i>if installed</i><br />
Enable ports 1 & 2 on the L293D - <i>if installed</i><br />
Enable ports 3 & 4 on the L293D - <i>if installed and if JP4 is shorted between 1 and 2.</i>
</td>
</tr>
<tr>
<td> Digital 10 </td>
<td> Slave Select for RFM12B - <i>if installed</i> </td>
</tr>
<tr>
<td> Digital 11 </td>
<td> SPI bus: Shared MOSI (Master Output, Slave Input) </td>
</tr>
<tr>
<td> Digital 12 </td>
<td> SPI bus: Shared MISO (Master Input, Slave Output) </td>
</tr>
<tr>
<td> Digital 13 </td>
<td> SPI bus: Shared Serial Clock (output from master) </td>
</tr>
<tr>
<td> Analog 0 </td>
<td> <i> Spare and available for use - on screw terminals with up to 16v inputs </i> </td>
</tr>
<tr>
<td> Analog 1 </td>
<td> <i> Spare and available for use - on screw terminals with up to 16v inputs </i> </td>
</tr>
<tr>
<td> Analog 2 </td>
<td> <i> Spare and available for use - on screw terminals with up to 16v inputs </i> </td>
</tr>
<tr>
<td> Analog 3 </td>
<td> <i> Spare and available for use - on screw terminals with up to 16v inputs </i> </td>
</tr>
<tr>
<td> Analog 4 </td>
<td> I2C Bus: SDA (data) </td>
</tr>
<tr>
<td> Analog 5 </td>
<td> I2C Bus: SCL (clock) </td>
</tr>
</table>
</p>
<h2>Notes</h2>
<ul>
<li>The following use the SPI Bus (Dig 11/12/13) - RFM12B, 23K256 and SD Card. They are selected by using their slave select pin, as above.</li>
<li>The MCP79410 / MCP79411 / MCP79412 RTC/SRAM/MAC chip uses the I2C Bus (A4 & A5).</li>
<li>The L293D motor driver is mutually exclusive with the SD Card, 23K256 DIP and will make the Red LED flash</li>
</ul>
<p> </p>
<p>
<a href="/nanode">Return to index page</a>
</p>
<p> </p>
</div>
</body>
</html>