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<title>FatFs - f_chdir</title> | |
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<div class="para"> | |
<h2>f_chdir</h2> | |
<p>The f_chdir function changes the current directory of a drive.</p> | |
<pre> | |
FRESULT f_chdir ( | |
const XCHAR* <em>Path</em> /* Pointer to the path name */ | |
); | |
</pre> | |
</div> | |
<div class="para"> | |
<h4>Parameters</h4> | |
<dl class="par"> | |
<dt>Path</dt> | |
<dd>Pointer to the null-terminated string that specifies a <a href="filename.html">directory</a> to go.</dd> | |
</dl> | |
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<div class="para"> | |
<h4>Return Values</h4> | |
<dl class="ret"> | |
<dt>FR_OK (0)</dt> | |
<dd>The function succeeded.</dd> | |
<dt>FR_NO_PATH</dt> | |
<dd>Could not find the path.</dd> | |
<dt>FR_INVALID_NAME</dt> | |
<dd>The path name is invalid.</dd> | |
<dt>FR_INVALID_DRIVE</dt> | |
<dd>The drive number is invalid.</dd> | |
<dt>FR_NOT_READY</dt> | |
<dd>The disk drive cannot work due to no medium in the drive or any other reason.</dd> | |
<dt>FR_DISK_ERR</dt> | |
<dd>The function failed due to an error in the disk function.</dd> | |
<dt>FR_INT_ERR</dt> | |
<dd>The function failed due to a wrong FAT structure or an internal error.</dd> | |
<dt>FR_NOT_ENABLED</dt> | |
<dd>The logical drive has no work area.</dd> | |
<dt>FR_NO_FILESYSTEM</dt> | |
<dd>There is no valid FAT volume on the disk.</dd> | |
</dl> | |
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<div class="para"> | |
<h4>Description</h4> | |
<p>The f_chdir function changes the current directory of the logical drive. The current directory of a drive is initialized to the root directory when the drive is auto-mounted. Note that the current directory is retained in the each file system object so that it also affects other tasks that using the drive.</p> | |
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<div class="para"> | |
<h4>QuickInfo</h4> | |
<p>Available when <tt>_FS_RPATH == 1</tt>.</p> | |
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<div class="para"> | |
<h4>Example</h4> | |
<pre> | |
// Change current direcoty of the current drive (dir1 under root dir) | |
f_chdir("/dir1"); | |
// Change current direcoty of drive 2 (parent dir) | |
f_chdir("2:.."); | |
</pre> | |
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<div class="para"> | |
<h4>See Also</h4> | |
<p><tt><a href="chdrive.html">f_chdrive</a></tt></p> | |
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