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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">unsigned int&#160;</td>
          <td class="paramname"><em>ByteCount</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
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<p>This function is the handler which performs processing for the SPI driver. </p>
<p>It is called from an interrupt context such that the amount of processing performed shoul