group__dhcp.html

avr应用测试程序

          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">unsigned int&nbsp;</td>
          <td class="mdname" nowrap> <em>len</em>, </td>
        </tr>
        <tr>
          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>struct <a class="el" href="structnetDhcpHeader.html">netDhcpHeader</a> *&nbsp;</td>
          <td class="mdname" nowrap> <em>packet</em></td>
        </tr>
        <tr>
          <td class="md"></td>
          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"></td>
        </tr>
      </table>
    </td>
  </tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Processes incoming DHCP packets from UDP port 68. This function is to be called by the stack when a DHCP packet arrives over the network. The DHCP packet will be parsed, handled, and a response will be generated and sent if needed. When the DHCP process completes, the IP addressing will be automatically updated. 
<p>
Definition at line <a class="el" href="dhcp_8c-source.html#l00042">42</a> of file <a class="el" href="dhcp_8c-source.html">dhcp.c</a>.    </td>
  </tr>
</table>
<a class="anchor" name="ga1" doxytag="dhcp.h::dhcpInit"></a><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
  <tr>
    <td class="mdRow">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top">void dhcpInit           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">void&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap></td>
        </tr>
      </table>
    </td>
  </tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Initialize DHCP system. Prepares DHCP for use and initializes lease time to zero. 
<p>
Definition at line <a class="el" href="dhcp_8c-source.html#l00030">30</a> of file <a class="el" href="dhcp_8c-source.html">dhcp.c</a>.    </td>
  </tr>
</table>
<a class="anchor" name="ga8" doxytag="dhcp.h::dhcpPrintHeader"></a><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
  <tr>
    <td class="mdRow">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top">void dhcpPrintHeader           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">struct <a class="el" href="structnetDhcpHeader.html">netDhcpHeader</a> *&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>packet</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap></td>
        </tr>
      </table>
    </td>
  </tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Print diagnotic information about BOOTP/DHCP packet.     </td>
  </tr>
</table>
<a class="anchor" name="ga4" doxytag="dhcp.h::dhcpRelease"></a><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
  <tr>
    <td class="mdRow">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top">void dhcpRelease           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">void&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap></td>
        </tr>
      </table>
    </td>
  </tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Release DHCP lease and assigned network parameters. This function releases the DHCP assigned address and allows the DHCP server to reallocate it. 
<p>
Definition at line <a class="el" href="dhcp_8c-source.html#l00158">158</a> of file <a class="el" href="dhcp_8c-source.html">dhcp.c</a>.    </td>
  </tr>
</table>
<a class="anchor" name="ga3" doxytag="dhcp.h::dhcpRequest"></a><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
  <tr>
    <td class="mdRow">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top">void dhcpRequest           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">void&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap></td>
        </tr>
      </table>
    </td>
  </tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Request DHCP assigned network parameters. This function begins the DHCP process. The remainder of operations are handled in <a class="el" href="group__dhcp.html#ga2">dhcpIn()</a>. 
<p>
Definition at line <a class="el" href="dhcp_8c-source.html#l00123">123</a> of file <a class="el" href="dhcp_8c-source.html">dhcp.c</a>.    </td>
  </tr>
</table>
<a class="anchor" name="ga7" doxytag="dhcp.h::dhcpSetOption"></a><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
  <tr>
    <td class="mdRow">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top">uint8_t* dhcpSetOption           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">uint8_t *&nbsp;</td>
          <td class="mdname" nowrap> <em>options</em>, </td>
        </tr>
        <tr>
          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>uint8_t&nbsp;</td>
          <td class="mdname" nowrap> <em>optcode</em>, </td>
        </tr>
        <tr>
          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>uint8_t&nbsp;</td>
          <td class="mdname" nowrap> <em>optlen</em>, </td>
        </tr>
        <tr>
          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>void *&nbsp;</td>
          <td class="mdname" nowrap> <em>optvalptr</em></td>
        </tr>
        <tr>
          <td class="md"></td>
          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"></td>
        </tr>
      </table>
    </td>
  </tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Set a DHCP option in the option list. <dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>options</em>&nbsp;</td><td>is a pointer to the options field of a DHCP packet. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>optcode</em>&nbsp;</td><td>is the option number to write. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>optlen</em>&nbsp;</td><td>is the data length of the option value. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>optvalptr</em>&nbsp;</td><td>is a pointer to the option data to be read. </td></tr>
  </table>
</dl>
<dl compact><dt><b>Returns:</b></dt><dd>pointer to write location of the next option. </dd></dl>

<p>
Definition at line <a class="el" href="dhcp_8c-source.html#l00253">253</a> of file <a class="el" href="dhcp_8c-source.html">dhcp.c</a>.    </td>
  </tr>
</table>
<a class="anchor" name="ga5" doxytag="dhcp.h::dhcpTimer"></a><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
  <tr>
    <td class="mdRow">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top">void dhcpTimer           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">void&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap></td>
        </tr>
      </table>
    </td>
  </tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Periodic DHCP maintenance. This function is to be called once per second and will expire the DHCP lease. 
<p>
Definition at line <a class="el" href="dhcp_8c-source.html#l00203">203</a> of file <a class="el" href="dhcp_8c-source.html">dhcp.c</a>.    </td>
  </tr>
</table>
<hr size="1"><address style="align: right;"><small>Generated on Sun Oct 29 03:41:09 2006 for Procyon AVRlib by&nbsp;
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.2 </small></address>
</body>
</html>