<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> | |
<html lang="en"> | |
<head> | |
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> | |
<meta http-equiv="Content-Style-Type" content="text/css"> | |
<link rel="up" title="FatFs" href="../00index_e.html"> | |
<link rel="stylesheet" href="../css_e.css" type="text/css" media="screen" title="ELM Default"> | |
<title>FatFs - f_opendir</title> | |
</head> | |
<body> | |
<div class="para"> | |
<h2>f_opendir</h2> | |
<p>The f_opendir function opens a directory.</p> | |
<pre> | |
FRESULT f_opendir ( | |
DIR* <em>DirObject</em>, /* Pointer to the blank directory object structure */ | |
const XCHAR* <em>DirName</em> /* Pointer to the directory name */ | |
); | |
</pre> | |
</div> | |
<div class="para"> | |
<h4>Parameters</h4> | |
<dl class="par"> | |
<dt>DirObject</dt> | |
<dd>Pointer to the blank directory object to be created.</dd> | |
<dt>DirName</dt> | |
<dd>Pinter to the null-terminated string that specifies the <a href="filename.html">directory name</a> to be opened.</dd> | |
</dl> | |
</div> | |
<div class="para"> | |
<h4>Return Values</h4> | |
<dl class="ret"> | |
<dt>FR_OK (0)</dt> | |
<dd>The function succeeded and the directory object is created. It is used for subsequent calls to read the directory entries.</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> | |
</div> | |
<div class="para"> | |
<h4>Description</h4> | |
<p>The f_opendir function opens an exsisting directory and creates the directory object for subsequent calls. The directory object structure can be discarded at any time without any procedure.</p> | |
</div> | |
<div class="para"> | |
<h4>QuickInfo</h4> | |
<p>Available when <tt>_FS_MINIMIZE <= 1</tt>.</p> | |
</div> | |
<div class="para"> | |
<h4>See Also</h4> | |
<p><tt><a href="readdir.html">f_readdir</a>, <a href="sdir.html">DIR</a></tt></p> | |
</div> | |
<p class="foot"><a href="../00index_e.html">Return</a></p> | |
</body> | |
</html> |