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<p>Access FAT16 and FAT32 volumes on SD and SDHC cards.  
 <a href="class_sd_volume.html#details">More...</a></p>

<p><code>#include &lt;SdVolume.h&gt;</code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:affab4c57c98e41ee55b21c87f814804b"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_volume.html#affab4c57c98e41ee55b21c87f814804b">blocksPerCluster</a> () const </td></tr>
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<tr class="memitem:a87ed6542db9642ffa106def897a368c6"><td class="memItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_volume.html#a87ed6542db9642ffa106def897a368c6">blocksPerFat</a> () const </td></tr>
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<tr class="memitem:adaecef65fdf94d323597a461eb641f5e"><td class="memItemLeft" align="right" valign="top"><a class="el" href="unioncache__t.html">cache_t</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_volume.html#adaecef65fdf94d323597a461eb641f5e">cacheClear</a> ()</td></tr>
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<tr class="memitem:a323adfb5ac395b769f30c31ce2618f22"><td class="memItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_volume.html#a323adfb5ac395b769f30c31ce2618f22">clusterCount</a> () const </td></tr>
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<tr class="memitem:a50c8e198feb63b0ca26737f91bd3e139"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_volume.html#a50c8e198feb63b0ca26737f91bd3e139">clusterSizeShift</a> () const </td></tr>
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<tr class="memitem:a99ca71035785948c42ade0863f91c9ab"><td class="memItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_volume.html#a99ca71035785948c42ade0863f91c9ab">dataStartBlock</a> () const </td></tr>
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<tr class="memitem:a4dbcb7b34a83468b1c6f8c4556393526"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_volume.html#a4dbcb7b34a83468b1c6f8c4556393526">dbgFat</a> (uint32_t n, uint32_t *v)</td></tr>
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<tr class="memitem:a5d4307584ef14e4a2fef85b4954b1aa2"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_volume.html#a5d4307584ef14e4a2fef85b4954b1aa2">fatCount</a> () const </td></tr>
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<tr class="memitem:a9032ec5d3323ee67477c6bbf39821415"><td class="memItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_volume.html#a9032ec5d3323ee67477c6bbf39821415">fatStartBlock</a> () const </td></tr>
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<tr class="memitem:a3f7b12db1e9ec4b847cd41fbe46b7baf"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_volume.html#a3f7b12db1e9ec4b847cd41fbe46b7baf">fatType</a> () const </td></tr>
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<tr class="memitem:a162efe707ab46847202300cb38739629"><td class="memItemLeft" align="right" valign="top">int32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_volume.html#a162efe707ab46847202300cb38739629">freeClusterCount</a> ()</td></tr>
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<tr class="memitem:a0ac221eda119ddccae8ac6bc20a4b12d"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_volume.html#a0ac221eda119ddccae8ac6bc20a4b12d">init</a> (<a class="el" href="class_sd2_card.html">Sd2Card</a> *dev)</td></tr>
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<tr class="memitem:a8573884a8056ab7c4c0d6e442f676cc4"><td class="memItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_volume.html#a8573884a8056ab7c4c0d6e442f676cc4">rootDirEntryCount</a> () const </td></tr>
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<tr class="memitem:afe76a9f7c181458995518dc8530a1fad"><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_sd2_card.html">Sd2Card</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_volume.html#afe76a9f7c181458995518dc8530a1fad">sdCard</a> ()</td></tr>
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<tr class="memitem:a30d4489087fbdce20b8fe1a624dbe658"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_volume.html#a30d4489087fbdce20b8fe1a624dbe658">SdVolume</a> ()</td></tr>
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Friends</h2></td></tr>
<tr class="memitem:a05e466c179d34fec11c4406677fe0533"><td class="memItemLeft" align="right" valign="top">class&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_sd_volume.html#a05e466c179d34fec11c4406677fe0533">SdBaseFile</a></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Access FAT16 and FAT32 volumes on SD and SDHC cards. </p>
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<p>Create an instance of <a class="el" href="class_sd_volume.html" title="Access FAT16 and FAT32 volumes on SD and SDHC cards. ">SdVolume</a> </p>

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<h2 class="groupheader">Member Function Documentation</h2>
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          <td class="memname">uint8_t SdVolume::blocksPerCluster </td>
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<dl class="section return"><dt>Returns</dt><dd>The volume's cluster size in blocks. </dd></dl>

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<dl class="section return"><dt>Returns</dt><dd>The number of blocks in one FAT. </dd></dl>

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<p>Clear the cache and returns a pointer to the cache. Used by the WaveRP recorder to do raw write to the SD card. Not for normal apps. </p>
<dl class="section return"><dt>Returns</dt><dd>A pointer to the cache buffer or zero if an error occurs. </dd></dl>

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<dl class="section return"><dt>Returns</dt><dd>The total number of clusters in the volume. </dd></dl>

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<dl class="section return"><dt>Returns</dt><dd>The shift count required to multiply by blocksPerCluster. </dd></dl>

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<dl class="section return"><dt>Returns</dt><dd>The logical block number for the start of file data. </dd></dl>

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<p>Debug access to FAT table</p>
<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramdir">[in]</td><td class="paramname">n</td><td>cluster number. </td></tr>
    <tr><td class="paramdir">[out]</td><td class="paramname">v</td><td>value of entry </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>true for success or false for failure </dd></dl>

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<dl class="section return"><dt>Returns</dt><dd>The number of FAT structures on the volume. </dd></dl>

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<dl class="section return"><dt>Returns</dt><dd>The logical block number for the start of the first FAT. </dd></dl>

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<dl class="section return"><dt>Returns</dt><dd>The FAT type of the volume. Values are 12, 16 or 32. </dd></dl>

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<p>Volume free space in clusters.</p>
<dl class="section return"><dt>Returns</dt><dd>Count of free clusters for success or -1 if an error occurs. </dd></dl>

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<p>Initialize a FAT volume. Try partition one first then try super floppy format.</p>
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    <tr><td class="paramdir">[in]</td><td class="paramname">dev</td><td>The <a class="el" href="class_sd2_card.html" title="Raw access to SD and SDHC flash memory cards. ">Sd2Card</a> where the volume is located.</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>The value one, true, is returned for success and the value zero, false, is returned for failure. Reasons for failure include not finding a valid partition, not finding a valid FAT file system or an I/O error. </dd></dl>

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<p>Initialize a FAT volume.</p>
<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramdir">[in]</td><td class="paramname">dev</td><td>The SD card where the volume is located.</td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">part</td><td>The partition to be used. Legal values for <em>part</em> are 1-4 to use the corresponding partition on a device formatted with a MBR, Master Boot Record, or zero if the device is formatted as a super floppy with the FAT boot sector in block zero.</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>The value one, true, is returned for success and the value zero, false, is returned for failure. Reasons for failure include not finding a valid partition, not finding a valid FAT file system in the specified partition or an I/O error. </dd></dl>

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<dl class="section return"><dt>Returns</dt><dd>The number of entries in the root directory for FAT16 volumes. </dd></dl>

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<dl class="section return"><dt>Returns</dt><dd>The logical block number for the start of the root directory on FAT16 volumes or the first cluster number on FAT32 volumes. </dd></dl>

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          <td class="memname"><a class="el" href="class_sd2_card.html">Sd2Card</a>* SdVolume::sdCard </td>
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<p><a class="el" href="class_sd2_card.html" title="Raw access to SD and SDHC flash memory cards. ">Sd2Card</a> object for this volume </p>
<dl class="section return"><dt>Returns</dt><dd>pointer to <a class="el" href="class_sd2_card.html" title="Raw access to SD and SDHC flash memory cards. ">Sd2Card</a> object. </dd></dl>

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<h2 class="groupheader">Friends And Related Function Documentation</h2>
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          <td class="memname">friend class <a class="el" href="class_sd_base_file.html">SdBaseFile</a></td>
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<hr/>The documentation for this class was generated from the following files:<ul>
<li>Arduino/libraries/SdFat/<a class="el" href="_sd_volume_8h.html">SdVolume.h</a></li>
<li>Arduino/libraries/SdFat/<a class="el" href="_sd_volume_8cpp.html">SdVolume.cpp</a></li>
</ul>
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