?? getfree.html
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<title>FatFs - f_getfree</title>
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<body>
<div class="para">
<h2>f_getfree</h2>
<p>僨傿僗僋偺枹巊梡僋儔僗僞悢傪摼傑偡丅</p>
<pre>
FRESULT f_getfree (
const char* <em>Path</em>, /* 懳徾僪儔僀僽偺儖乕僩丒僨傿儗僋僩儕 */
DWORD* <em>Clusters</em>, /* 嬻偒僋儔僗僞悢傪奿擺偡傞曄悢傊偺億僀儞僞 */
FATFS** <em>FileSystemObject</em> /* 僼傽僀儖丒僔僗僥儉丒僆僽僕僃僋僩傪巜偡億僀儞僞傊偺億僀儞僞 */
);
</pre>
</div>
<div class="para">
<h4>堷悢</h4>
<dl class="par">
<dt>Path</dt>
<dd>忣曬傪摼傞榑棟僪儔僀僽偺儖乕僩僨傿儗僋僩儕偺<a href="filename.html">僷僗柤</a>偑擖偭偨<tt>'\0'</tt>偱廔傢傞暥帤楍傊偺億僀儞僞傪巜掕偟傑偡丅</dd>
<dt>Clusters</dt>
<dd>嬻偒僋儔僗僞悢傪奿擺偡傞DWORD曄悢傊偺億僀儞僞傪巜掕偟傑偡丅</dd>
<dt>FileSystemObject</dt>
<dd>懳徾僪儔僀僽偺僼傽僀儖丒僔僗僥儉丒僆僽僕僃僋僩傪巜偡億僀儞僞傪奿擺偡傞億僀儞僞傊偺億僀儞僞傪巜掕偟傑偡丅</dd>
</dl>
</div>
<div class="para">
<h4>栠傝抣</h4>
<dl class="ret">
<dt>FR_OK (0)</dt>
<dd>惓忢廔椆丅<tt><em>*Clusters</em></tt>偵嬻偒僋儔僗僞悢偑曉偝傟傑偡丅</dd>
<dt>FR_INVALID_DRIVE</dt>
<dd>僪儔僀僽斣崋偑晄惓丅</dd>
<dt>FR_NOT_READY</dt>
<dd>儊僨傿傾偑僙僢僩偝傟偰偄側偄側偳丄僨傿僗僋僪儔僀僽偑摦嶌晄擻忬懺丅</dd>
<dt>FR_RW_ERROR</dt>
<dd>僨傿僗僋丒傾僋僙僗偱僄儔乕偑敪惗偟偨丅</dd>
<dt>FR_NOT_ENABLED</dt>
<dd>偦偺榑棟僪儔僀僽偵儚乕僋丒僄儕傾偑梌偊傜傟偰偄側偄丅</dd>
<dt>FR_NO_FILESYSTEM</dt>
<dd>僨傿僗僋忋偵桳岠側FAT僷乕僥乕僔儑儞偑尒偮偐傜側偄丅</dd>
</dl>
</div>
<div class="para">
<h4>夝愢</h4>
<p>榑棟僪儔僀僽忋偺嬻偒僋儔僗僞悢傪庢摼偟傑偡丅曉偝傟偨僼傽僀儖丒僔僗僥儉丒僆僽僕僃僋僩偺<tt>sects_clust</tt>儊儞僶偑僋儔僗僞偁偨傝偺僙僋僞悢傪帵偟偰偄傞偺偱丄偙傟傪尦偵幚嵺偺嬻偒僒僀僘偑寁嶼偱偒傑偡丅儕乕僪僆儞儕乕峔惉偍傛傃<tt>_FS_MINIMIZE >= 1</tt>偱偼偙偺娭悢偼僒億乕僩偝傟傑偣傫丅</p>
</div>
<div class="para">
<h4>巊梡椺</h4>
<pre>
FATFS *fs;
DWORD clust;
// Get free clusters
res = f_getfree("", &clust, &fs);
if (res) die(res);
// Get free space
printf("%lu KB total disk space.\n"
"%lu KB available on the disk.\n",
(fs->max_clust - 2) * fs->sects_clust / 2,
clust * fs->sects_clust / 2);
</pre>
</div>
<div class="para">
<h4>嶲徠</h4>
<tt><a href="sfatfs.html">FATFS</a></tt>
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<p class="foot"><a href="../00index_j.html">栠傞</a></p>
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