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| <title>FatFs - f_chdrive</title> | |
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| <div class="para"> | |
| <h2>f_chdrive</h2> | |
| <p>The f_chdrive function changes the current drive.</p> | |
| <pre> | |
| FRESULT f_chdrive ( | |
| BYTE <em>Drive</em> /* Logical drive number */ | |
| ); | |
| </pre> | |
| </div> | |
| <div class="para"> | |
| <h4>Parameters</h4> | |
| <dl class="par"> | |
| <dt>Drive</dt> | |
| <dd>Specifies the <a href="filename.html">logical drive number</a> to be set as the current drive.</dd> | |
| </dl> | |
| </div> | |
| <div class="para"> | |
| <h4>Return Values</h4> | |
| <dl class="ret"> | |
| <dt>FR_OK (0)</dt> | |
| <dd>The function succeeded.</dd> | |
| <dt>FR_INVALID_DRIVE</dt> | |
| <dd>The drive number is invalid.</dd> | |
| </dl> | |
| </div> | |
| <div class="para"> | |
| <h4>Description</h4> | |
| <p>The f_chdrive function changes the current drive. The initial value of the current drive number is 0. Note that the current drive is retained in a static variable so that it also affects other tasks that using the file functions.</p> | |
| </div> | |
| <div class="para"> | |
| <h4>QuickInfo</h4> | |
| <p>Available when <tt>_FS_RPATH == 1</tt>.</p> | |
| </div> | |
| <div class="para"> | |
| <h4>See Also</h4> | |
| <p><tt><a href="chdir.html">f_chdir</a></tt></p> | |
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