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FatFs R0.14a, released December 5, 2020

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Christopher Williams
2021-01-14 18:05:43 -07:00
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<h4>Features</h4>
<ul>
<li>DOS/Windows compatible FAT/exFAT filesystem.</li>
<li>Platform independent. Easy to port.</li>
<li>Very small footprint for program code and work area.</li>
<li>Platform independent. <a href="doc/appnote.html#port">Easy to port</a>.</li>
<li>Very small <a href="doc/appnote.html#memory">footprint</a> for program code and work area.</li>
<li>Various <a href="doc/config.html">configuration options</a> to support for:
<ul>
<li>Long file name in ANSI/OEM or Unicode.</li>
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<div class="para">
<h3>Media Access Interface</h3>
<img src="res/layers2.png" class="rset" width="245" height="220" alt="layer">
<p>Since FatFs module is the <em>filesystem layer</em> independent of platforms and storage media, it is completely separated from the physical devices, such as memory card, harddisk and any type of storage device. The low level device control module is <em>not any part of FatFs module</em> and it needs to be provided by implementer. FatFs accesses the storage devices via a simple media access interface shown below. Also sample implementations for some platforms are available in the downloads. A function checker for low level disk I/O module is available <a href="res/app4.c">here</a>.</p>
<p>Since FatFs module is the <em>filesystem layer</em> independent of platforms and storage media, it is completely separated from the physical devices, such as memory card, harddisk and any type of storage device. The storage device control module is <em>not any part of FatFs module</em> and it needs to be provided by implementer. FatFs controls the storage devices via a simple media access interface shown below. Also sample implementations for some platforms are available in the downloads. A function checker for storage device control module is available <a href="res/app4.c">here</a>.</p>
<ul>
<li><a href="doc/dstat.html">disk_status</a> - Get device status</li>
<li><a href="doc/dinit.html">disk_initialize</a> - Initialize device</li>
<li><a href="doc/dread.html">disk_read</a> - Read sector(s)</li>
<li><a href="doc/dwrite.html">disk_write</a> - Write sector(s)</li>
<li><a href="doc/dioctl.html">disk_ioctl</a> - Control device dependent functions</li>
<li><a href="doc/fattime.html">get_fattime</a> - Get current time</li>
<li>Storage Device Controls
<ul>
<li><a href="doc/dstat.html">disk_status</a> - Get device status</li>
<li><a href="doc/dinit.html">disk_initialize</a> - Initialize device</li>
<li><a href="doc/dread.html">disk_read</a> - Read data</li>
<li><a href="doc/dwrite.html">disk_write</a> - Write data</li>
<li><a href="doc/dioctl.html">disk_ioctl</a> - Control device dependent functions</li>
</ul>
</li>
<li>Real Time Clock
<ul>
<li><a href="doc/fattime.html">get_fattime</a> - Get current time</li>
</ul>
</li>
</ul>
</div>
<div class="para">
<h3>Resources</h3>
<p>The FatFs module is a free software opened for education, research and development. You can use, modify and/or redistribute it for personal projects or commercial products without any restriction under your responsibility. For further information, refer to the application note.</p>
<p>The FatFs module is a free software opened for education, research and development. You can use, modify and/or redistribute it for any purpose without any restriction under your responsibility. For further information, refer to the application note.</p>
<ul>
<li><em>Read First: <a href="doc/appnote.html">FatFs module application note</a></em></li>
<li>Download: <a href="http://elm-chan.org/fsw/ff/archives.html">Archives</a></li>
<li>Community: <a href="http://elm-chan.org/fsw/ff/bd/">FatFs User Forum</a></li>
<li>Downloads: <a href="http://elm-chan.org/fsw/ff/archives.html">Previous Releases</a>↗ </li>
<li>Community: <a href="http://elm-chan.org/fsw/ff/bd/">FatFs User Forum</a>↗ </li>
<li><a href="https://msdn.microsoft.com/en-us/windows/hardware/gg463080.aspx">FAT32 Specification by Microsoft</a>↗ (The authorized document on FAT filesystem)</li>
<li><a href="http://elm-chan.org/docs/fat_e.html">The basics of FAT filesystem</a></li>
<li><a href="http://elm-chan.org/docs/exfat_e.html">The basics of exFAT filesystem</a></li>
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<li><a href="res/rwtest2.png">Benchmark 2</a> (LPC2368/72MHz with MMC via MCI)</li>
</div>
</body>
</html>