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<title>FatFs儌僕儏乕儖 傾僾儕働乕僔儑儞丒僲乕僩</title>
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<h1>FatFs儌僕儏乕儖 傾僾儕働乕僔儑儞丒僲乕僩</h1>
<hr>
<div class="para">
<h3>堏怉偺嵺偵攝椂偡傋偒偙偲</h3>
<p>FatFs儌僕儏乕儖偼堏怉惈偵娭偟偰師偺揰傪慜採偲偟偰偄傑偡丅</p>
<ul>
<li>張棟宯偼ANSI C弨嫆偱偁傞偙偲丅<br>
FatFs儌僕儏乕儖偼ANSI C弨嫆偱婰弎偝傟偰偄傞偺偱丄ANSI C弨嫆偺僐儞僷僀儔側(cè)傜摿偵張棟宯埶懚側(cè)揰偼偁傝傑偣傫丅偨偩偟丄FAT偲偄偆僔僗僥儉娫偱億乕僞僽儖側(cè)峔憿懱傪憖嶌偡傞偨傔丄僾儘僙僢僒偺僄儞僨傿傾儞偺堘偄偼堄幆偡傞昁梫偑偁傝傑偡丅偙傟偼 ff.h(tff.h) 偱掕媊偝傟偰偄傞偺偱丄嵟弶偵偙傟傪揔愗偵愝掕偟傑偡(朰傟偰偄傞応崌偼僄儔乕傪弌偡)丅</li>
<li>char/short/long 偺僒僀僘偼丄偦傟偧傟 8/16/32價僢僩 偱丄int偼 16價僢僩埲忋 偱偁傞偙偲丅<br>
偙傟偼 integer.h 撪偱 typedef 偝傟偰偄傑偡丅惍悢偺宆偲僒僀僘偵娭偟偰偼丄傑偭偲偆側(cè)張棟宯側(cè)傜栤戣側(cè)偄偼偢偱偡偑丄婛懚偺掕媊偲徴撍偟偨応崌偼柕弬偑側(cè)偄傛?zhèn)蓲崍觽祩?cè)偗傟偽側(cè)傝傑偣傫丅</li>
</ul>
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<div class="para">
<h3>儊儌儕巊梡検 (R0.05)</h3>
<p>奺庬娐嫬偱偺儌僕儏乕儖偺儊儌儕巊梡検偺椺傪帵偟傑偡丅悢抣偺扨埵偼僶僀僩偱丄D偼榑棟僪儔僀僽悢丄F偼摨帪僆乕僾儞丒僼傽僀儖悢傪帵偟傑偡丅嵟揔壔僆僾僔儑儞偼丄慡偰僐乕僪丒僒僀僘偲偟偰偄傑偡丅</p>
<table class="lst2">
<tr><th></th><th>AVR</th><th>H8/300H</th><th>MSP430</th><th>TLCS-870/C</th><th>V850ES</th><th>SH2</th></tr>
<tr><td>僐儞僷僀儔</td><td>gcc</td><td>CH38</td><td>CL430</td><td>CC870C</td><td>CA850</td><td>SHC</td></tr>
<tr><td>_MCU_ENDIAN</td><td>1</td><td>2</td><td>2</td><td>1</td><td>1</td><td>2</td></tr>
<tr><td>FatFs 僐乕僪<br>(昗弨, R/W峔惉)</td><td>8810</td><td>8880</td><td></td><td></td><td>6418</td><td>7830</td></tr>
<tr><td>FatFs 僐乕僪<br>(嵟彫, R/W峔惉)</td><td>5832</td><td>5748</td><td></td><td></td><td>4072</td><td>5366</td></tr>
<tr><td>FatFs 僐乕僪<br>(昗弨, R/O峔惉)</td><td>4264</td><td>4110</td><td></td><td></td><td>2990</td><td>3420</td></tr>
<tr><td>FatFs 僐乕僪<br>(嵟彫, R/O峔惉)</td><td>3052</td><td>3124</td><td></td><td></td><td>2194</td><td>2634</td></tr>
<tr><td>FatFs 惷揑儚乕僋</td><td>D*2 + 2</td><td>D*4 + 2</td><td></td><td></td><td>D*4 + 2</td><td>D*4 + 2</td></tr>
<tr><td>FatFs 摦揑儚乕僋</td><td>D*554 + F*544</td><td>D*554 + F*550</td><td></td><td></td><td>D*554 + F*550</td><td>D*554 + F*550</td></tr>
<tr><td>Tiny-FatFs 僐乕僪<br>(昗弨, R/W峔惉)</td><td>7376</td><td>7274</td><td>6622</td><td>8854</td><td>5670</td><td></td></tr>
<tr><td>Tiny-FatFs 僐乕僪<br>(嵟彫, R/W峔惉)</td><td>4866</td><td>4826</td><td>4354</td><td>6176</td><td>3726</td><td></td></tr>
<tr><td>Tiny-FatFs 僐乕僪<br>(昗弨, R/O峔惉)</td><td>3654</td><td>3554</td><td>3220</td><td>4358</td><td>2710</td><td></td></tr>
<tr><td>Tiny-FatFs 僐乕僪<br>(嵟彫, R/O峔惉)</td><td>2620</td><td>2708</td><td>2402</td><td>3329</td><td>1910</td><td></td></tr>
<tr><td>Tiny-FatFs 惷揑儚乕僋</td><td>4</td><td>6</td><td>4</td><td>4</td><td>6</td><td></td></tr>
<tr><td>Tiny-FatFs 摦揑儚乕僋</td><td>544 + F*28</td><td>544 + F*32</td><td>544 + F*28</td><td>544 + F*28</td><td>544 + F*32</td><td></td></tr>
</table>
</div>
<div class="para">
<h3>FatFs vs. Tiny-FatFs</h3>
<p>億乕僞僽儖丒僆乕僨傿僆傗僨乕僞丒儘僈乕側(cè)偳丄傛?zhèn)瓊爞闂p搑偱偼Tiny-FatFs偱廫暘偱偡丅偟偐偟丄Tiny-FatFs偼昗弨峔惉偱偼FAT32偵懳墳偟偰偄側(cè)偄偺偱丄巊梡偱偒傞僨傿僗僋偼2GB(FAT64偱4GB)傑偱偲偄偆惂栺偑偁傝傑偡丅<tt>_FAT32</tt>僆僾僔儑儞偱FAT32懳墳傪捛壛偱偒傑偡偑丄偦偺暘僐乕僪丒僒僀僘偑朿傜傒傑偡丅僼儖婡擻偺FatFs偼丄暋悢僼傽僀儖傪崅懍傾僋僙僗偡傞応崌傗丄暋悢僪儔僀僽偺懳墳偑昁梫側(cè)応崌偵桳岠偱偡丅</p>
<div class="rset">
<table class="lst2">
<tr><th>儊儌儕梕検</th><th>FAT僞僀僾</th></tr>
<tr><td><= 64MB</td><td>FAT12</td></tr>
<tr><td>128MB乣2GB</td><td>FAT16</td></tr>
<tr><td>>= 4GB</td><td>FAT32</td></tr>
</table>
</div>
<p>2GB傑偱偺僇乕僪偵尷傞側(cè)傜丄FAT32傊偺懳墳偼晄梫偱偡丅塃偺昞偵儊儌儕丒僇乕僪偺梕検偲婯掕偺FAT僞僀僾(SD儊儌儕偺応崌)傪帵偟傑偡丅儊儌儕丒僇乕僪偺弌壸帪偼丄嵟戝偺僷僼僅乕儅儞僗偑弌傞傛?zhèn)蓛f乕僞椞堟?zhèn)虌珚E偑挷惍偝傟偨僼僅乕儅僢僩偵側(cè)偭偰偄傑偡丅偟偨偑偭偰丄PC偱僼僅乕儅僢僩偡傞側(cè)偳偟偰婯掕偲堘偆僼僅乕儅僢僩偵側(cè)傞偲丄彂偒崬傒惈擻偑戝暆偵掅壓偡傞応崌偑偁傞偺偱拲堄偑昁梫偱偡丅</p>
</div>
<div class="para">
<h3>岠棪偺椙偄僼傽僀儖丒傾僋僙僗偺曽朄</h3>
<p>帒尮偺尷傜傟偨慻傒崬傒僔僗僥儉偱岠棪傛?zhèn)瓋A僋僙僗偡傞偨傔偵偼丄僼傽僀儖丒傾僋僙僗偺巇慻傒傪偁傞掱搙堄幆偟偨巊梡偑媮傔傜傟傑偡丅FatFs儌僕儏乕儖偱偼丄僨傿僗僋忋偺僼傽僀儖丒僨乕僞偼 f_read()撪偱師偺傛?zhèn)?cè)庤弴偱撉傒弌偝傟傑偡丅</p>
<div class="lset">恾1. 僙僋僞丒儈僗傾儔僀儊儞僩丒儕乕僪<br>
<img src="../img/f1.png" width="490" height="73" alt="fig.1">
</div>
<br class="clr">
<div class="lset">恾2. 僙僋僞丒儈僗傾儔僀儊儞僩丒儕乕僪<br>
<img src="../img/f2.png" width="490" height="140" alt="fig.2">
</div>
<br class="clr">
<div class="lset">恾3. 僙僋僞丒傾儔僀儊儞僩丒儕乕僪<br>
<img src="../img/f3.png" width="490" height="119" alt="fig.3">
</div>
<br class="clr">
<p>偙偙偱僼傽僀儖I/O僶僢僼傽偲偼丄僨乕僞丒僙僋僞偺堦晹傪撉傒彂偒偡傞偨傔偺1僙僋僞挿偺僶僢僼傽偱丄FatFs偱偼偦偺僼傽僀儖丒僆僽僕僃僋僩撪偺丄Tiny-FatFs偱偼儚乕僋僄儕傾撪偺僶僢僼傽偺偙偲傪巜偟偰偄傑偡丅</p>
<p>Tiny-FatFs偱偼丄慡偰偺僨乕僞揮憲偲FAT傗僨傿儗僋僩儕傊偺傾僋僙僗傪偨偩堦偮偺僙僋僞丒僶僢僼傽偱峴偭偰偄傞偨傔丄僨乕僞揮憲偵傛?zhèn)鐵AT偺僉儍僢僔儏偑幐傢傟丄僋儔僗僞嫬奅傪捠夁偡傞偨傃偵FAT僙僋僞傪撉傒捈偡昁梫偑偁傝傑偡丅FatFs偺応崌偼丄僨乕僞梡僶僢僼傽偼FAT梡偲偼暿側(cè)偺偱丄FAT僙僋僞傪撉傓昿搙偼Tiny-FatFs偺 1/341, 1/256 傑偨偼 1/128偱嵪傒傑偡(僋儔僗僞偑楢懕偟偰偄傞応崌)丅偮傑傝丄Tiny-FatFs偼惈擻掅壓偺戙彏傪暐偭偰RAM巊梡検傪嶍尭偟偰偄傞傢偗偱偡丅</p>
<p>揮憲椞堟?zhèn)虃績Z僋僞慡懱傪娷傓晹暘偼(恾2)偺傛?zhèn)蓛t傽僀儖I/O僶僢僼傽傪夘偝偢丄僨傿僗僋偲偺娫偱捈愙揮憲偝傟傑偡丅姰慡側(cè)僙僋僞丒傾儔僀儊儞僩丒傾僋僙僗偺応崌(恾3)偼丄僼傽僀儖I/O僶僢僼傽偼慡偔巊梡偝傟傑偣傫丅捈愙揮憲偱偼丄壜擻側(cè)傜disk_read()偵暋悢僙僋僞傪巜掕偟偰嵟戝尷偺儅儖僠丒僙僋僞揮憲偑峴傢傟傑偡丅偨偩偟丄僋儔僗僞嫬奅傪傑偨偖偲偒偼僋儔僗僞偑椬愙偟偰偄偨偲偟偰傕揮憲偼暘妱偝傟傑偡丅</p>
<p>偙偺傛?zhèn)蓙A嬌椡僙僋僞丒傾儔僀儊儞僩丒傾僋僙僗偵側(cè)傞傛?zhèn)蓴z椂偡傟偽丄柍懯側(cè)儊儌儕丒僐僺乕偑尭偭偰惈擻偑岦忋偟傑偡丅偝傜偵丄Tiny-FatFs偱偼FAT偺僉儍僢僔儏偑惗偒傞傛?zhèn)蓚?cè)傝丄徣儊儌儕摿惈偲FatFs偺惈擻偲偑摨帪偵摼傜傟傑偡丅</p>
</div>
<div class="para">
<h3>僋儕僠僇儖丒僙僋僔儑儞</h3>
<p>僨傿僗僋忋偺FAT峔憿傪憖嶌偟偰偄傞搑拞偱丄掆揹丄晄惓側(cè)儊僨傿傾偺庢?zhèn)鑺O偟丄夞暅晄擻側(cè)僨乕僞丒僄儔乕摍偺忈奞偑敪惗偡傞偲丄張棟偑拞搑敿抂側(cè)忬懺偱拞抐偝傟丄偦偺寢壥偲偟偰FAT峔憿偑攋夡偝傟傞壜擻惈偑偁傝傑偡丅師偵FatFs儌僕儏乕儖偵偍偗傞僋儕僠僇儖丒僙僋僔儑儞偲丄偦偺娫偺忈奞偵傛?zhèn)鑻N偒偆傞僄儔乕偺忬懺傪帵偟傑偡丅</p>
<div class="lset">
恾4. 挿偄僋儕僠僇儖丒僙僋僔儑儞<br>
<img src="../img/f4.png" width="320" height="436" alt="fig.4">
</div>
<div class="lset">
恾5. 抁偔偟偨僋儕僠僇儖丒僙僋僔儑儞<br>
<img src="../img/f5.png" width="320" height="436" alt="fig.5">
</div>
<br class="clr">
<p>愒偱帵偟偨僙僋僔儑儞傪幚峴拞偵忈奞偑敪惗偟偨応崌丄僋儘僗丒儕儞僋偑敪惗偟偰憖嶌懳徾偺僼傽僀儖丒僨傿儗僋僩儕偑幐傢傟傞壜擻惈偑偁傝傑偡丅墿怓偱帵偟偨僙僋僔儑儞傪幚峴拞偵忈奞偑敪惗偟偨応崌丄偮偓偺偆偪偄偢傟偐傑偨偼暋悢偺寢壥偑惗偠傞壜擻惈偑偁傝傑偡丅</p>
<ul>
<li>彂偒姺偊拞偺僼傽僀儖偺撪梕偑攋夡偝傟傞丅</li>
<li>捛婰拞偺僼傽僀儖偑僆乕僾儞慜偺忬懺偵栠傞丅</li>
<li>怴婯偵嶌惉偝傟偨僼傽僀儖偑徚偊傞丅</li>
<li>怴婯傑偨偼忋彂偒偱嶌惉偝傟偨僼傽僀儖偺挿偝偑僛儘偵側(cè)偭偰巆傞丅</li>
<li>儘僗僩僠僃乕儞偺敪惗偵傛?zhèn)鑳f傿僗僋偺棙梡岠棪偑埆壔偡傞丅</li>
</ul>
<p>偄偢傟傕彂偒崬傒拞傗憖嶌懳徾偱側(cè)偄僼傽僀儖偵偼塭嬁偼偁傝傑偣傫丅偙傟傜偺僋儕僠僇儖丒僙僋僔儑儞偼丄僼傽僀儖傪彂偒崬傒儌乕僪偱奐偄偰偄傞帪娫傪嵟彫尷偵偡傞偐丄f_sync()傪揔媂巊梡偡傞偙偲偱恾5偺傛?zhèn)蓛妰X僋傪嵟彫壔偡傞偙偲偑偱偒傑偡丅</p>
</div>
<div class="para">
<h3>尰儕價僕儑儞偺栤戣揰偲偦偺夵慞埬</h3>
<ul>
<li>僼傽僀儖丒僆僽僕僃僋僩偺拪徾壔<br>
尰嵼偼僼傽僀儖丒僆僽僕僃僋僩偺幚懱傪傾僾儕働乕僔儑儞懁偱娗棟偟偰偄傞偺偱丄傾僾儕働乕僔儑儞丒儌僕儏乕儖偱偺僗僞僢僋徚旓検偑懡偔側(cè)傝傑偡(Tiny-FatFs偱偼栤戣偵側(cè)傜側(cè)偄)丅偙傟傪僴儞僪儖偱娗棟偡傞側(cè)偳傛?zhèn)钂姀蹓粋穫陚蝺A僾儕働乕僔儑儞丒儌僕儏乕儖偱偺僗僞僢僋徚旓検傪尭傜偣傞偟丄懠偺僼傽僀儖丒僔僗僥儉傊偺懳墳傕梕堈偵側(cè)傝傑偡丅偙偺応崌丄FatFs撪偱僼傽僀儖丒僆僽僕僃僋僩偺椞堟?zhèn)饜脫I偵妋曐偟偰偍偔偐丄malloc()偡傞偙偲偵側(cè)傝傑偡丅偨偩偟丄偙偺傛?zhèn)蓚穫閭苾t傽僀儖丒僆僽僕僃僋僩傪捈愙嶲徠偱偒側(cè)偔側(cè)傝丄feof傗ftell側(cè)偳儉僟側(cè)娭悢偑怴偨偵昁梫偵側(cè)傝傑偡丅</li>
<li>僙僋僞丒僶僢僼傽娗棟偺夵慞<br>
尰嵼偼僙僋僞丒僶僢僼傽傪屌掕偟偰巊梡偟偰偄傞偨傔丄柍懯側(cè)僨傿僗僋傾僋僙僗偑懡偔岠棪偑埆偄丅儊儌儕偺弫戲側(cè)僔僗僥儉偱偼丄暋悢偺僙僋僞丒僶僢僼傽傪巊梡偟偰僨傿僗僋丒僉儍僢僔儏傪峔惉偡傟偽惈擻傪岦忋偝偣傞偙偲偑偱偒傑偡丅</li>
<li>挿偄僼傽僀儖柤傊偺懳墳<br>
FAT偺奼挘巇條偱偼MS-DOS偺8.3宍幃僼傽僀儖柤偵壛偊丄255暥帤傑偱偺挿偄僼傽僀儖柤(LFN)傪埖偊傞傛?zhèn)蓚?cè)偭偰偄傑偡偑丄尰儕價僕儑儞偱偼枹懳墳偱8.3宍幃偟偐巊梡偱偒傑偣傫丅偙傟偵懳墳偡傞偵偼丄僼傽僀儖柤偩偗偱傕500僶僀僩埲忋偺僶僢僼傽偑昁梫偵側(cè)偭偨傝丄UCS-2偲Shift_JIS偺憡屳曄姺(嫄戝側(cè)曄姺僥乕僽儖傪巊偆)偑昁梫偲側(cè)傞側(cè)偳丄儊儌儕偺徚旓偑敋敪揑偵憹偊偰偟傑偄傑偡丅側(cè)偍丄LFN偺婡擻偼Microsoft幮偺摿嫋偵側(cè)偭偰偄傞偨傔丄偙傟傪惢昳偵巊偆偵偼儔僀僙儞僗宊栺偑昁梫偱偡丅</li>
<li>RTOS傊偺懳墳<br>
FatFs儌僕儏乕儖傪巊梡偡傞僞僗僋傪堦偮偵尷傞側(cè)傜摿偵堄幆偡傞昁梫偼偁傝傑偣傫偑丄摨偠榑棟僪儔僀僽偵暋悢偺僞僗僋偐傜摨帪傾僋僙僗偡傞偵偼丄壗傜偐偺攔懠惂屼偑昁梫偵側(cè)偭偰偒傑偡丅FatFs儌僕儏乕儖偺RTOS傊偺懳墳嶌嬈偼丄<a href="http://www.toppers.jp/">TOPPERS僾儘僕僃僋僩</a>偱峴傢傟偰偄傑偡丅</li>
</ul>
<br>
<p>偦偟偰丄偙傟傜偺婡擻奼挘傪峴偆偲偦傟偩偗懡偔偺儕僜乕僗偑梫媮偝傟傞傛?zhèn)蓚?cè)傝丄偙偺僾儘僕僃僋僩偺懳徾偲偡傞8/16價僢僩丒儅僀僐儞偺僔僗僥儉偵嵹偣傜傟側(cè)偔側(cè)偭偰偟傑偆偲偄偆栤戣傕偁傝傑偡(偙傟偑堦斣偺栤戣偐傕抦傟傑偣傫)丅</p>
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