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修改了Web后台的部分界面，增加了HAmqtt中的总电量传感器，后台新增mqtt上报频率设置

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OOP
2025-03-03 21:49:41 +08:00
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mico-os/libraries/filesystem/FatFs/doc/en/setlabel.html Normal file
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<meta http-equiv="Content-Style-Type" content="text/css">
<link rel="up" title="FatFs" href="../00index_e.html">
<link rel="alternate" hreflang="ja" title="Japanese" href="../ja/setlabel.html">
<link rel="stylesheet" href="../css_e.css" type="text/css" media="screen" title="ELM Default">
<title>FatFs - f_setlabel</title>
</head>
<body>
<div class="para func">
<h2>f_setlabel</h2>
<p>The f_setlabel function sets/removes the label of a volume.</p>
<pre>
FRESULT f_setlabel (
const TCHAR* <span class="arg">name</span> <span class="c">/* [IN] Volume label to be set */</span>
);
</pre>
</div>
<div class="para arg">
<h4>Parameters</h4>
<dl class="par">
<dt>name</dt>
<dd>Pointer to the null-terminated string that specifies the volume label to be set.</dd>
</dl>
</div>
<div class="para ret">
<h4>Return Values</h4>
<p>
<a href="rc.html#ok">FR_OK</a>,
<a href="rc.html#de">FR_DISK_ERR</a>,
<a href="rc.html#ie">FR_INT_ERR</a>,
<a href="rc.html#nr">FR_NOT_READY</a>,
<a href="rc.html#in">FR_INVALID_NAME</a>,
<a href="rc.html#wp">FR_WRITE_PROTECTED</a>,
<a href="rc.html#id">FR_INVALID_DRIVE</a>,
<a href="rc.html#ne">FR_NOT_ENABLED</a>,
<a href="rc.html#ns">FR_NO_FILESYSTEM</a>,
<a href="rc.html#tm">FR_TIMEOUT</a>
</p>
</div>
<div class="para desc">
<h4>Description</h4>
<p>When the string has a drive number, the volume label will be set to the volume specified by the drive number. If the volume label is a null-string, the volume label on the volume will be removed. The format of the volume label is similar to the SFN but there are some differences shown below:</p>
<ul>
<li>11 bytes or less in length as local character code.</li>
<li>Cannot contain period.</li>
<li>Can contain spaces anywhere in the name.</li>
</ul>
</div>
<div class="para comp">
<h4>QuickInfo</h4>
<p>Available when <tt>_FS_READONLY == 0</tt> and <tt>_USE_LABEL == 1</tt>.</p>
</div>
<div class="para use">
<h4>Example</h4>
<pre>
<span class="c">/* Set volume label to the default drive */</span>
f_setlabel("DATA DISK");
<span class="c">/* Set volume label to the drive 2 */</span>
f_setlabel("2:DISK 3 OF 4");
<span class="c">/* Remove volume label of the drive 2 */</span>
f_setlabel("2:");
</pre>
</div>
<div class="para ref">
<h4>See Also</h4>
<tt><a href="getlabel.html">f_getlabel</a></tt>
</div>
<p class="foot"><a href="../00index_e.html">Return</a></p>
</body>
</html>