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<a href="#pub-methods">Public Member Functions</a> &#124;
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<p>Access FAT16 and FAT32 partitions on raw file devices.  
 <a href="class_fat_partition.html#details">More...</a></p>

<p><code>#include &lt;FatPartition.h&gt;</code></p>
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Inheritance diagram for FatPartition:</div>
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Public Member Functions</h2></td></tr>
<tr class="memitem:a1c3ab374b425c27bb6b6ddd55752c056"><td class="memItemLeft" align="right" valign="top">uint16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_partition.html#a1c3ab374b425c27bb6b6ddd55752c056">bytesPerCluster</a> ()</td></tr>
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<tr class="memitem:aaf43a09e71689c257f4b189ee307db4f"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_partition.html#aaf43a09e71689c257f4b189ee307db4f">bytesPerClusterShift</a> ()</td></tr>
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<tr class="memitem:a1eba03c763bab44263735488435731f8"><td class="memItemLeft" align="right" valign="top">uint16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_partition.html#a1eba03c763bab44263735488435731f8">bytesPerSector</a> ()</td></tr>
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<tr class="memitem:a4e513ab3fcfb95583092793116aa4df5"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_partition.html#a4e513ab3fcfb95583092793116aa4df5">bytesPerSectorShift</a> ()</td></tr>
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<tr class="memitem:abf74c1e3c714b396e6271aee304c2448"><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_fat_partition.html#abf74c1e3c714b396e6271aee304c2448">cacheClear</a> ()</td></tr>
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<tr class="memitem:aba35645c23735c4833c07bc2b3adcd1f"><td class="memItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_partition.html#aba35645c23735c4833c07bc2b3adcd1f">clusterCount</a> () const</td></tr>
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<tr class="memitem:a7e89ec91780f7dfa060b261c605bf2e5"><td class="memItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_partition.html#a7e89ec91780f7dfa060b261c605bf2e5">dataStartSector</a> () const</td></tr>
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<tr class="memitem:a0af1e91a311180119b4a2c85d7e6e87e"><td class="memItemLeft" align="right" valign="top">int8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_partition.html#a0af1e91a311180119b4a2c85d7e6e87e">dbgFat</a> (uint32_t n, uint32_t *v)</td></tr>
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<tr class="memitem:a56b37c3230818b9ae8e0a25c01a370a3"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_partition.html#a56b37c3230818b9ae8e0a25c01a370a3">fatCount</a> ()</td></tr>
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<tr class="memitem:a2c94db084d89355da7695d82ee612f72"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_partition.html#a2c94db084d89355da7695d82ee612f72">FatPartition</a> ()</td></tr>
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<tr class="memitem:a6a1ce7d707cf15bea08b63216413e055"><td class="memItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_partition.html#a6a1ce7d707cf15bea08b63216413e055">fatStartSector</a> () const</td></tr>
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<tr class="memitem:ad45c276232d7093b82f1075e8c488bac"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_partition.html#ad45c276232d7093b82f1075e8c488bac">fatType</a> () const</td></tr>
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<tr class="memitem:ac9689f1e11f59acc5f1b21ed9bb71174"><td class="memItemLeft" align="right" valign="top">int32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_partition.html#ac9689f1e11f59acc5f1b21ed9bb71174">freeClusterCount</a> ()</td></tr>
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<tr class="memitem:ab827224f30eec57255d21cae589911ef"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_partition.html#ab827224f30eec57255d21cae589911ef">init</a> (<a class="el" href="class_sd_spi_card.html">BlockDevice</a> *dev, uint8_t part=1)</td></tr>
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<tr class="memitem:a6ba99b9711269b5ab6ca091b88e81288"><td class="memItemLeft" align="right" valign="top">uint16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_partition.html#a6ba99b9711269b5ab6ca091b88e81288">rootDirEntryCount</a> () const</td></tr>
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<tr class="memitem:a5d005e0f6fd4b84da8a5ebdea03aaf85"><td class="memItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_partition.html#a5d005e0f6fd4b84da8a5ebdea03aaf85">rootDirStart</a> () const</td></tr>
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<tr class="memitem:a6b970fa2e06de1a826b09e251dc3119b"><td class="memItemLeft" align="right" valign="top">uint16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_partition.html#a6b970fa2e06de1a826b09e251dc3119b">sectorMask</a> ()</td></tr>
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<tr class="memitem:a836546c368e6ffe117e6ab8775d23eba"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_partition.html#a836546c368e6ffe117e6ab8775d23eba">sectorsPerCluster</a> () const</td></tr>
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<tr class="memitem:a593a27482ff8d993542d6f82bd92e26c"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_partition.html#a593a27482ff8d993542d6f82bd92e26c">sectorsPerClusterShift</a> () const</td></tr>
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<tr class="memitem:a1f5c7599333dbe152a3cdd60623ce6d1"><td class="memItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_partition.html#a1f5c7599333dbe152a3cdd60623ce6d1">sectorsPerFat</a> () const</td></tr>
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<tr class="memitem:a916ba7d67711bb62daf12ecd47ca4b8e"><td class="memItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_partition.html#a916ba7d67711bb62daf12ecd47ca4b8e">volumeSectorCount</a> () const</td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="friends"></a>
Friends</h2></td></tr>
<tr class="memitem:a1e97a7aed860b898c403cb29455b3fe7"><td class="memItemLeft" align="right" valign="top">class&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_partition.html#a1e97a7aed860b898c403cb29455b3fe7">FatCache</a></td></tr>
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<tr class="memitem:a18fb15a715ea85037ab802286853103e"><td class="memItemLeft" align="right" valign="top">class&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_fat_partition.html#a18fb15a715ea85037ab802286853103e">FatFile</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 partitions on raw file devices. </p>
</div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a2c94db084d89355da7695d82ee612f72">&#9670;&nbsp;</a></span>FatPartition()</h2>

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<p>Create an instance of <a class="el" href="class_fat_partition.html" title="Access FAT16 and FAT32 partitions on raw file devices. ">FatPartition</a> </p>

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<h2 class="groupheader">Member Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a1c3ab374b425c27bb6b6ddd55752c056">&#9670;&nbsp;</a></span>bytesPerCluster()</h2>

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<dl class="section return"><dt>Returns</dt><dd>Number of bytes in a cluster. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#aaf43a09e71689c257f4b189ee307db4f">&#9670;&nbsp;</a></span>bytesPerClusterShift()</h2>

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

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<h2 class="memtitle"><span class="permalink"><a href="#a1eba03c763bab44263735488435731f8">&#9670;&nbsp;</a></span>bytesPerSector()</h2>

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<dl class="section return"><dt>Returns</dt><dd>Number of bytes per sector. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a4e513ab3fcfb95583092793116aa4df5">&#9670;&nbsp;</a></span>bytesPerSectorShift()</h2>

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

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<h2 class="memtitle"><span class="permalink"><a href="#abf74c1e3c714b396e6271aee304c2448">&#9670;&nbsp;</a></span>cacheClear()</h2>

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<p>Clear the cache and returns a pointer to the cache. 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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<h2 class="memtitle"><span class="permalink"><a href="#aba35645c23735c4833c07bc2b3adcd1f">&#9670;&nbsp;</a></span>clusterCount()</h2>

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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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<h2 class="memtitle"><span class="permalink"><a href="#a7e89ec91780f7dfa060b261c605bf2e5">&#9670;&nbsp;</a></span>dataStartSector()</h2>

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

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<h2 class="memtitle"><span class="permalink"><a href="#a0af1e91a311180119b4a2c85d7e6e87e">&#9670;&nbsp;</a></span>dbgFat()</h2>

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          <td class="paramname"><em>n</em>, </td>
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          <td class="paramtype">uint32_t *&#160;</td>
          <td class="paramname"><em>v</em>&#160;</td>
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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>-1 error, 0 EOC, else 1. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a56b37c3230818b9ae8e0a25c01a370a3">&#9670;&nbsp;</a></span>fatCount()</h2>

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<dl class="section return"><dt>Returns</dt><dd>The number of File Allocation Tables. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a6a1ce7d707cf15bea08b63216413e055">&#9670;&nbsp;</a></span>fatStartSector()</h2>

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

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<h2 class="memtitle"><span class="permalink"><a href="#ad45c276232d7093b82f1075e8c488bac">&#9670;&nbsp;</a></span>fatType()</h2>

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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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<h2 class="memtitle"><span class="permalink"><a href="#ac9689f1e11f59acc5f1b21ed9bb71174">&#9670;&nbsp;</a></span>freeClusterCount()</h2>

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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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<h2 class="memtitle"><span class="permalink"><a href="#ab827224f30eec57255d21cae589911ef">&#9670;&nbsp;</a></span>init()</h2>

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<p>Initialize a FAT partition.</p>
<dl class="params"><dt>Parameters</dt><dd>
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    <tr><td class="paramdir">[in]</td><td class="paramname">dev</td><td>BlockDevice for this partition. </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 sector zero.</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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<h2 class="memtitle"><span class="permalink"><a href="#a6ba99b9711269b5ab6ca091b88e81288">&#9670;&nbsp;</a></span>rootDirEntryCount()</h2>

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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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<h2 class="memtitle"><span class="permalink"><a href="#a5d005e0f6fd4b84da8a5ebdea03aaf85">&#9670;&nbsp;</a></span>rootDirStart()</h2>

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<dl class="section return"><dt>Returns</dt><dd>The logical sector 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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<h2 class="memtitle"><span class="permalink"><a href="#a6b970fa2e06de1a826b09e251dc3119b">&#9670;&nbsp;</a></span>sectorMask()</h2>

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<dl class="section return"><dt>Returns</dt><dd>Mask for sector offset. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a836546c368e6ffe117e6ab8775d23eba">&#9670;&nbsp;</a></span>sectorsPerCluster()</h2>

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<dl class="section return"><dt>Returns</dt><dd>The volume's cluster size in sectors. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a593a27482ff8d993542d6f82bd92e26c">&#9670;&nbsp;</a></span>sectorsPerClusterShift()</h2>

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

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<h2 class="memtitle"><span class="permalink"><a href="#a1f5c7599333dbe152a3cdd60623ce6d1">&#9670;&nbsp;</a></span>sectorsPerFat()</h2>

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

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<h2 class="memtitle"><span class="permalink"><a href="#a916ba7d67711bb62daf12ecd47ca4b8e">&#9670;&nbsp;</a></span>volumeSectorCount()</h2>

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

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<h2 class="groupheader">Friends And Related Function Documentation</h2>
<a id="a1e97a7aed860b898c403cb29455b3fe7"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a1e97a7aed860b898c403cb29455b3fe7">&#9670;&nbsp;</a></span>FatCache</h2>

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<p><a class="el" href="class_fat_cache.html" title="Sector cache. ">FatCache</a> allowed access to private members. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a18fb15a715ea85037ab802286853103e">&#9670;&nbsp;</a></span>FatFile</h2>

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<p><a class="el" href="class_fat_file.html" title="Basic file class. ">FatFile</a> allowed access to private members. </p>

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<hr/>The documentation for this class was generated from the following files:<ul>
<li>ArduinoSdFat/libraries/SdFat/src/FatLib/<a class="el" href="_fat_partition_8h.html">FatPartition.h</a></li>
<li>ArduinoSdFat/libraries/SdFat/src/FatLib/FatPartition.cpp</li>
</ul>
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