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</font>            status = SDIO_CheckResponse(pHcd, pReq, SDHCD_CHECK_DATA_TRANS_OK);
            if (SDIO_SUCCESS(status)) {
                <font face="Arial, Helvetica, sans-serif" color="#999999">.... start data transfer phase 
</font>            } else {
               <font face="Arial, Helvetica, sans-serif" color="#999999">... card response indicates that the card cannot handle data
</font>                  <font face="Arial, Helvetica, sans-serif" color="#999999">// set completion status
</font>               pRequest-&gt;Status = status;               
            }
        
        </pre>
</p>
</blockquote>
<p class="FUNCHEADINGS">See also:</p>
<blockquote>
<p class="BODYTEXT"></p>
</blockquote>
</td>
</tr>
</table>
<a name="FUNC_SDIO_HandleHcdEvent"></a>
<table cellpadding="4" cellspacing="0" border="0" width="100%">
<tr>
<td bgcolor="#0000FF" rowspan="2" width="40%"><a href="http://www.codetelligence.com"><img border="0" height="40" width="252" name="image" src="Images/codetelligence_lrg.gif"></a></td><td bgcolor="#0000FF" height="62" width="50%"><font face="Arial, Helvetica, sans-serif" size="5" color="#FFFFFF"><strong>Codetelligence Embedded SDIO Stack<br>Host Controller Driver Documentation</strong></font></td><td bgcolor="#0000FF" height="62" width="10%"><td><a href="#FUNC_SDIO_CheckResponse"><img border="0" height="32" width="27" src="Images/leftarrow.gif"></a></td><td><a href="#FUNC_SDIO_RegisterHostController"><img border="0" height="32" width="27" src="Images/rightarrow.gif"></a></td></td>
</tr>
</table>
<table cellpadding="0" cellspacing="10" border="0" width="100%">
<tr>
<td width="93%"><font face="Arial, Helvetica, sans-serif"><span class="Topic">
<blockquote>
<table width="100%" cellspacing="0" cellpadding="0">
<td>
<br>
<pre>
<span class="FUNCPROTOTYPE">
 SDIO_STATUS SDIO_HandleHcdEvent(PSDHCD pHcd, HCD_EVENT Event) 
        </span>
</pre>
</td>
</table>
</blockquote>
</span></font></td>
</tr>
</table>
<hr>
<table cellpadding="15" cellspacing="0" border="0" width="100%">
<tr>
<td>
<p class="FUNCHEADINGS">Description:</p>
<blockquote>
<p class="BODYTEXT">Indicate to the SDIO bus driver (core) of an event in the host controller              driver.</p>
</blockquote>
<p class="FUNCHEADINGS">Parameters:</p>
<p class="BODYTEXT">
<blockquote>
<p class="BODYTEXT">Inputs:</p>
<blockquote>
<p class="BODYTEXT">
  pHcd - the host controller structure that was registered
           HCD_EVENT - event code
        <br>
</p>
</blockquote>
</blockquote>
</p>
<p class="BODYTEXT">
<blockquote>
<p class="BODYTEXT">Outputs:</p>
<blockquote>
<p class="BODYTEXT">
 none
        <br>
</p>
</blockquote>
</blockquote>
</p>
<p class="BODYTEXT">
<blockquote>
<p class="BODYTEXT">Returns:</p>
<blockquote>
<p class="BODYCODE">
 SDIO_STATUS
        <br>
</p>
</blockquote>
</blockquote>
</p>
<p class="FUNCHEADINGS">Notes:</p>
<blockquote>
<p class="BODYTEXT">
  
          The host controller driver can indicate asynchronous events by calling this 
          function with an appropriate event code. Refer to the HDK help manual for
          more information on the event types
        <br>
</p>
</blockquote>
<p class="FUNCHEADINGS">Example: </p>
<blockquote>
<p class="BODYCODE">
<pre>

<font face="Arial, Helvetica, sans-serif" color="#FF00FF"> Example of indicating a card insertion event:</font>
            SDIO_HandleHcdEvent(&amp;Hcd, EVENT_HCD_ATTACH)
        </pre>
</p>
</blockquote>
<p class="FUNCHEADINGS">See also:</p>
<blockquote>
<p class="BODYTEXT"></p>
</blockquote>
</td>
</tr>
</table>
<a name="FUNC_SDIO_RegisterHostController"></a>
<table cellpadding="4" cellspacing="0" border="0" width="100%">
<tr>
<td bgcolor="#0000FF" rowspan="2" width="40%"><a href="http://www.codetelligence.com"><img border="0" height="40" width="252" name="image" src="Images/codetelligence_lrg.gif"></a></td><td bgcolor="#0000FF" height="62" width="50%"><font face="Arial, Helvetica, sans-serif" size="5" color="#FFFFFF"><strong>Codetelligence Embedded SDIO Stack<br>Host Controller Driver Documentation</strong></font></td><td bgcolor="#0000FF" height="62" width="10%"><td><a href="#FUNC_SDIO_HandleHcdEvent"><img border="0" height="32" width="27" src="Images/leftarrow.gif"></a></td><td><a href="#FUNC_SDIO_UnregisterHostController"><img border="0" height="32" width="27" src="Images/rightarrow.gif"></a></td></td>
</tr>
</table>
<table cellpadding="0" cellspacing="10" border="0" width="100%">
<tr>
<td width="93%"><font face="Arial, Helvetica, sans-serif"><span class="Topic">
<blockquote>
<table width="100%" cellspacing="0" cellpadding="0">
<td>
<br>
<pre>
<span class="FUNCPROTOTYPE">
 SDIO_STATUS SDIO_RegisterHostController (PSDHCD pHcd) 
        </span>
</pre>
</td>
</table>
</blockquote>
</span></font></td>
</tr>
</table>
<hr>
<table cellpadding="15" cellspacing="0" border="0" width="100%">
<tr>
<td>
<p class="FUNCHEADINGS">Description:</p>
<blockquote>
<p class="BODYTEXT">Register a host controller driver with the bus driver.</p>
</blockquote>
<p class="FUNCHEADINGS">Parameters:</p>
<p class="BODYTEXT">
<blockquote>
<p class="BODYTEXT">Inputs:</p>
<blockquote>
<p class="BODYTEXT">
  pHcd - the host controller definition structure.
        <br>
</p>
</blockquote>
</blockquote>
</p>
<p class="BODYTEXT">
<blockquote>
<p class="BODYTEXT">Outputs:</p>
<blockquote>
<p class="BODYTEXT">
 none
        <br>
</p>
</blockquote>
</blockquote>
</p>
<p class="BODYTEXT">
<blockquote>
<p class="BODYTEXT">Returns:</p>
<blockquote>
<p class="BODYCODE">
 SDIO_STATUS - SDIO_STATUS_SUCCESS when successful.
        <br>
</p>
</blockquote>
</blockquote>
</p>
<p class="FUNCHEADINGS">Notes:</p>
<blockquote>
<p class="BODYTEXT">
 Each host controller driver must register with the bus driver when loaded. 
          The driver registers an SDHCD structure initialized with hardware properties 
          and callback functions for bus requests and configuration.  On multi-slot 
          hardware ,each slot should be registered with a separate SDHCD structure.
          The bus driver views each slot as a seperate host controller object.
          The driver should be prepared to receive configuration requests before 
          this call returns. The host controller driver must unregister itself when 
          shutting down.
        <br>
</p>
</blockquote>
<p class="FUNCHEADINGS">Example: </p>
<blockquote>
<p class="BODYCODE">
<pre>

<font face="Arial, Helvetica, sans-serif" color="#FF00FF"> Registering a host controller driver:</font>  
    static SDHCD Hcd = {
       .pName = "sdio_custom_hcd",
       .Version = CT_SDIO_STACK_VERSION_CODE,  <font face="Arial, Helvetica, sans-serif" color="#999999">// set stack version code
</font>       .SlotNumber = 0,                        <font face="Arial, Helvetica, sans-serif" color="#999999">// bus driver internal use
</font>       .Attributes = SDHCD_ATTRIB_BUS_1BIT | SDHCD_ATTRIB_BUS_4BIT | SDHCD_ATTRIB_MULTI_BLK_IRQ
                     SDHCD_ATTRIB_AUTO_CMD12 ,
       .MaxBytesPerBlock = 2048     <font face="Arial, Helvetica, sans-serif" color="#999999">// each data block can be up to 2048 bytes
</font>       .MaxBlocksPerTrans = 1024,   <font face="Arial, Helvetica, sans-serif" color="#999999">// each data transaction can consist of 1024 blocks
</font>       .MaxSlotCurrent = 500,       <font face="Arial, Helvetica, sans-serif" color="#999999">// max FET switch current rating
</font>       .SlotVoltageCaps = SLOT_POWER_3_3V,      <font face="Arial, Helvetica, sans-serif" color="#999999">// only 3.3V operation
</font>       .SlotVoltagePreferred = SLOT_POWER_3_3V,  
       .MaxClockRate = 24000000,   <font face="Arial, Helvetica, sans-serif" color="#999999">// 24 Mhz max operation
</font>       .pContext = &amp;HcdContext,    <font face="Arial, Helvetica, sans-serif" color="#999999">// set our driver context
</font>       .pRequest = HcdRequest,     <font face="Arial, Helvetica, sans-serif" color="#999999">// set SDIO bus request callback
</font>       .pConfigure = HcdConfig,    <font face="Arial, Helvetica, sans-serif" color="#999999">// set SDIO bus configuration callback
</font>    };    
    if (!SDIO_SUCCESS((status = SDIO_RegisterHostController(&amp;Hcd)))) {
         DBG_PRINT(SDDBG_ERROR, ("SDIO HCD - failed to register with host, status =%d\n",
                                    status));
    }
        </pre>
</p>
</blockquote>
<p class="FUNCHEADINGS">See also:</p>
<blockquote>
<p class="BODYTEXT">
<a href="#FUNC_SDIO_UnregisterHostController">
SDIO_UnregisterHostController
        </a>
<br>
</p>
</blockquote>
</td>
</tr>
</table>
<a name="FUNC_SDIO_UnregisterHostController"></a>
<table cellpadding="4" cellspacing="0" border="0" width="100%">
<tr>
<td bgcolor="#0000FF" rowspan="2" width="40%"><a href="http://www.codetelligence.com"><img border="0" height="40" width="252" name="image" src="Images/codetelligence_lrg.gif"></a></td><td bgcolor="#0000FF" height="62" width="50%"><font face="Arial, Helvetica, sans-serif" size="5" color="#FFFFFF"><strong>Codetelligence Embedded SDIO Stack<br>Host Controller Driver Documentation</strong></font></td><td bgcolor="#0000FF" height="62" width="10%"><td><a href="#FUNC_SDIO_RegisterHostController"><img border="0" height="32" width="27" src="Images/leftarrow.gif"></a></td><td><a href="PD_Reference_overview.htm"><img border="0" height="32" width="27" src="Images/rightarrow.gif"></a></td></td>
</tr>
</table>
<table cellpadding="0" cellspacing="10" border="0" width="100%">
<tr>
<td width="93%"><font face="Arial, Helvetica, sans-serif"><span class="Topic">
<blockquote>
<table width="100%" cellspacing="0" cellpadding="0">
<td>
<br>
<pre>
<span class="FUNCPROTOTYPE">
 SDIO_STATUS SDIO_UnregisterHostController (PSDHCD pHcd) 
        </span>
</pre>
</td>
</table>
</blockquote>
</span></font></td>
</tr>
</table>
<hr>
<table cellpadding="15" cellspacing="0" border="0" width="100%">
<tr>
<td>
<p class="FUNCHEADINGS">Description:</p>
<blockquote>
<p class="BODYTEXT">Unregister a host controller driver with the bus driver.</p>
</blockquote>
<p class="FUNCHEADINGS">Parameters:</p>
<p class="BODYTEXT">
<blockquote>
<p class="BODYTEXT">Inputs:</p>
<blockquote>
<p class="BODYTEXT">
  pHcd - the host controller definition structure that was registered.
        <br>
</p>
</blockquote>
</blockquote>
</p>
<p class="BODYTEXT">
<blockquote>
<p class="BODYTEXT">Outputs:</p>
<blockquote>
<p class="BODYTEXT">
 none
        <br>
</p>
</blockquote>
</blockquote>
</p>
<p class="BODYTEXT">
<blockquote>
<p class="BODYTEXT">Returns:</p>
<blockquote>
<p class="BODYCODE">
 SDIO_STATUS - SDIO_STATUS_SUCCESS when successful.
        <br>
</p>
</blockquote>
</blockquote>
</p>
<p class="FUNCHEADINGS">Notes:</p>
<blockquote>
<p class="BODYTEXT">
 Each host controller driver must unregister with the bus driver when 
          unloading. The driver is responsible for halting any outstanding I/O 
          operations.  The bus driver will automatically unload function drivers
          that may be attached assigned to cards inserted into slots.
        <br>
</p>
</blockquote>
<p class="FUNCHEADINGS">Example: </p>
<blockquote>
<p class="BODYCODE">
<pre>

<font face="Arial, Helvetica, sans-serif" color="#FF00FF"> Unregistering a host controller driver:</font> 
    if (!SDIO_SUCCESS((status = SDIO_UnregisterHostController(&amp;Hcd)))) {
         DBG_PRINT(SDDBG_ERROR, ("SDIO HCD - failed to unregister with host, status =%d\n",
                                    status));
    }
        </pre>
</p>
</blockquote>
<p class="FUNCHEADINGS">See also:</p>
<blockquote>
<p class="BODYTEXT">
<a href="#FUNC_SDIO_RegisterHostController">
SDIO_RegisterHostController
        </a>
<br>
</p>
</blockquote>
</td>
</tr>
</table>&nbsp;<br>
<table cellpadding="2" cellspacing="0" border="0" width="100%">
<tr>
<td>
<div align="right">
<a href="#TopTopic">Back to top</a>
</div>
</td>
</tr>
<tr bgcolor="#0000FF">
<td><font face="Arial, Helvetica, sans-serif" color="#FFFFFF"><strong>&copy;2004  </strong></font><font face="Arial, Helvetica, sans-serif" color="#FFFFFF"><strong>Code<em>telligence</em>,
        Inc.   </strong></font><a target="_blank" href="http://www.codetelligence.com"><font face="Arial, Helvetica, sans-serif" color="#FFFFFF">www.codetelligence.com</font></a></td>
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