48 lines
2.1 KiB
HTML
48 lines
2.1 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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<html lang="en">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<meta http-equiv="Content-Style-Type" content="text/css">
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<link rel="stylesheet" href="../css_e.css" type="text/css" media="screen" title="ELM Default">
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<title>FatFs - disk_status</title>
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</head>
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<body>
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<div class="para func">
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<h2>disk_status</h2>
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<p>The disk_status function is called to inquire the current drive status.</p>
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<pre>
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DSTATUS disk_status (
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BYTE <span class="arg">pdrv</span> <span class="c">/* [IN] Physical drive number */</span>
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);
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</pre>
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</div>
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<div class="para arg">
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<h4>Parameter</h4>
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<dl class="par">
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<dt>pdrv</dt>
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<dd>Physical drive number to identify the target device. Always zero in single drive system.</dd>
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</dl>
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</div>
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<div class="para ret">
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<h4>Return Values</h4>
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<p>The current drive status is returned in combination of status flags described below. FatFs refers only <tt>STA_NOINIT</tt> and <tt>STA_PROTECT</tt>.</p>
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<dl class="ret">
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<dt>STA_NOINIT</dt>
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<dd>Indicates that the device has not been initialized and not ready to work. This flag is set on system reset, media removal or failure of <a href="dinit.html"><tt>disk_initialize</tt></a> function. It is cleared on <tt>disk_initialize</tt> function succeeded. Any media change that occurs asynchronously must be captured and reflect it to the status flags, or auto-mount function will not work correctly. If the system does not support media change detection, application program needs to explicitly re-mount the volume with <tt>f_mount</tt> function after each media change.</dd>
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<dt>STA_NODISK</dt>
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<dd>Indicates that no medium in the drive. This is always cleared when the drive is non-removable class. Note that FatFs does not refer this flag.</dd>
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<dt>STA_PROTECT</dt>
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<dd>Indicates that the medium is write protected. This is always cleared when the drive has no write protect function. Not valid if <tt>STA_NODISK</tt> is set.</dd>
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</dl>
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</div>
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<p class="foot"><a href="../00index_e.html">Return</a></p>
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</body>
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</html>
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