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- <title>FatFs - disk_status</title>
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- <div class="para func">
- <h2>disk_status</h2>
- <p>The disk_status function returns the current disk status.</p>
- <pre>
- DSTATUS disk_status (
- BYTE <span class="arg">pdrv</span> <span class="c">/* [IN] Physical drive number */</span>
- );
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- <div class="para arg">
- <h4>Parameter</h4>
- <dl class="par">
- <dt>pdrv</dt>
- <dd>Physical drive number to identify the target device.</dd>
- </dl>
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- <div class="para ret">
- <h4>Return Values</h4>
- <p>The disk status is returned in combination of following flags. FatFs refers only <tt>STA_NOINIT</tt> and <tt>STA_PROTECT</tt>.</p>
- <dl class="ret">
- <dt>STA_NOINIT</dt>
- <dd>Indicates that the device is not initialized. This flag is set on system reset, media removal or failure of <tt>disk_initialize()</tt> function. It is cleared on <tt>disk_initialize()</tt> function succeeded. Media change that occurs asynchronously must be captured and reflect it to the status flags, or auto-mount feature will not work correctly. When media change detection feature is not supported, application program needs to de-initialize the file system object with <tt>f_mount()</tt> function after the media change.</dd>
- <dt>STA_NODISK</dt>
- <dd>Indicates that no medium in the drive. This is always cleared on fixed disk drive. Note that FatFs does not refer this flag.</dd>
- <dt>STA_PROTECT</dt>
- <dd>Indicates that the medium is write protected. This is always cleared on the drives without write protect feature. Not valid while no medium in the drive.</dd>
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