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6 | <link rel="up" title="FatFs" href="../00index_e.html">\r | |
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9 | <title>FatFs - disk_status</title>\r | |
10 | </head>\r | |
11 | \r | |
12 | <body>\r | |
13 | \r | |
14 | <div class="para func">\r | |
15 | <h2>disk_status</h2>\r | |
16 | <p>The disk_status function is called to inquire the current drive status.</p>\r | |
17 | <pre>\r | |
18 | DSTATUS disk_status (\r | |
19 | BYTE <span class="arg">pdrv</span> <span class="c">/* [IN] Physical drive number */</span>\r | |
20 | );\r | |
21 | </pre>\r | |
22 | </div>\r | |
23 | \r | |
24 | <div class="para arg">\r | |
25 | <h4>Parameter</h4>\r | |
26 | <dl class="par">\r | |
27 | <dt>pdrv</dt>\r | |
28 | <dd>Physical drive number to identify the target device. Always zero in single drive system.</dd>\r | |
29 | </dl>\r | |
30 | </div>\r | |
31 | \r | |
32 | \r | |
33 | <div class="para ret">\r | |
34 | <h4>Return Values</h4>\r | |
35 | <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>\r | |
36 | <dl class="ret">\r | |
37 | <dt>STA_NOINIT</dt>\r | |
38 | <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>\r | |
39 | <dt>STA_NODISK</dt>\r | |
40 | <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>\r | |
41 | <dt>STA_PROTECT</dt>\r | |
42 | <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>\r | |
43 | </dl>\r | |
44 | </div>\r | |
45 | \r | |
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