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FatFs R0.12a, released July 10, 2016

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Christopher Williams
2017-05-10 19:06:26 -07:00
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<hr>
<div class="abst">
<img src="img/layers.png" class="rset" width="245" height="255" alt="layer">
<p>FatFs is a generic FAT file system module for small embedded systems. The FatFs module is written in compliance with ANSI C (C89) and completely separated from the disk I/O layer. Therefore it is independent of the platform. It can be incorporated into small microcontrollers with limited resource, such as 8051, PIC, AVR, ARM, Z80, 78K and etc. Also Petit FatFs module for tiny microcontrollers is available <a href="http://elm-chan.org/fsw/ff/00index_p.html">here</a>.</p>
<img src="res/layers.png" class="rset" width="245" height="255" alt="layer">
<p>FatFs is a generic FAT/exFAT file system module for small embedded systems. The FatFs module is written in compliance with ANSI C (C89) and completely separated from the disk I/O layer. Therefore it is independent of the platform. It can be incorporated into small microcontrollers with limited resource, such as 8051, PIC, AVR, ARM, Z80, 78K and etc. Also Petit FatFs module for tiny microcontrollers is available <a href="http://elm-chan.org/fsw/ff/00index_p.html">here</a>.</p>
<h4>Features</h4>
<ul>
<li>Windows compatible FAT/exFAT file system.</li>
<li>Platform independent. Easy to port.</li>
<li>Very small footprint for code and work area.</li>
<li>Very small footprint for program code and work area.</li>
<li>Various <a href="en/config.html">configuration options</a> to support for:
<ul>
<li>Multiple volumes (physical drives and partitions).</li>
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<div class="para">
<h3>Application Interface</h3>
<img src="img/layers1.png" class="rset" width="245" height="220" alt="layer">
<img src="res/layers1.png" class="rset" width="245" height="220" alt="layer">
<ul>
<li>File Access
<ul>
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<div class="para">
<h3>Device Control Interface</h3>
<img src="img/layers2.png" class="rset" width="245" height="220" alt="layer">
<img src="res/layers2.png" class="rset" width="245" height="220" alt="layer">
<p>Since the FatFs module is a file system layer, it is completely separated from the physical devices, such as memory card, harddisk and any type of storage device. FatFs accesses the storage devices via a simple interface shown below. The low level device control module is <em>not a part of FatFs module</em>. It is provided by implementer. Also sample implementations for some platforms are available in the downloads.</p>
<ul>
<li><a href="en/dstat.html">disk_status</a> - Get device status</li>
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<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>
<ul>
<li>Read first: <a href="en/appnote.html">FatFs module application note</a> <span class="mfd">April 12, 2016</span></li>
<li>Download: <a href="ff12.zip">FatFs R0.12</a> | <a href="updates.txt">Updates</a> | <a href="patches.html">Patches</a> <span class="mfd">April 12, 2016</span></li>
<li>Download: <a href="ffsample.zip">FatFs sample projects for various platforms</a> <span class="mfd">April 12, 2016</span></li>
<li>Download: <a href="archives.html">Old Releases</a></li>
<li>Read first: <a href="en/appnote.html">FatFs module application note</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 file system)</li>
<li><a href="http://elm-chan.org/docs/fat.html">The basics of FAT file system [ja]</a></li>
<li><a href="http://elm-chan.org/docs/mmc/mmc_e.html">How to Use MMC/SDC</a></li>
<li><a href="http://elm-chan.org/junk/fa/faff.html">Playing with FlashAir and FatFs</a></li>
<li><a href="http://stm32f4-discovery.com/2014/07/library-21-read-sd-card-fatfs-stm32f4xx-devices/">Read SD card with FatFs on STM32F4xx devices by Tilen Majerle</a>↗ (Quick and easy implementation for STM32F4-Discovery)</li>
<li><a href="http://nemuisan.blog.bai.ne.jp/">Nemuisan's Blog</a>↗ (Well written implementations for STM32F/SDIO and LPC2300/MCI)</li>
<li><a href="http://nemuisan.blog.bai.ne.jp/">Nemuisan's Blog</a>↗ (Well written implementations for STM32F/SPI &amp; SDIO and LPC4088/SDMMC)</li>
<li><a href="http://www.siwawi.arubi.uni-kl.de/avr_projects/arm_projects/arm_memcards/index.html">ARM-Projects by Martin THOMAS</a>↗ (Examples for LPC2000, AT91SAM and STM32)</li>
<li><a href="img/rwtest1.png">Benchmark 1</a> (ATmega1284/20MHz with MMC via USART in SPI, CFC via GPIO)</li>
<li><a href="img/rwtest2.png">Benchmark 2</a> (LPC2368/72MHz with MMC via MCI)</li>
<li><a href="rc/fd.mp4">Demo movie of an application</a> (this project is in ffsample.zip/lpc23xx)</li></ul>
<li><a href="res/rwtest1.png">Benchmark 1</a> (ATmega1284/20MHz with MMC via USART in SPI, CFC via GPIO)</li>
<li><a href="res/rwtest2.png">Benchmark 2</a> (LPC2368/72MHz with MMC via MCI)</li>
</div>
<hr>
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