fatfs/documents/doc/utime.html

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   9 <title>FatFs - f_utime</title>
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  13
  14 <div class="para func">
  15 <h2>f_utime</h2>
  16 <p>The f_utime function changes the timestamp of a file or sub-directory.</p>
  17 <pre>
  18 FRESULT f_utime (
  19   const TCHAR* <span class="arg">path</span>,  <span class="c">/* [IN] Object name */</span>
  20   const FILINFO* <span class="arg">fno</span>  <span class="c">/* [IN] Time and data to be set */</span>
  21 );
  22 </pre>
  23 </div>
  24
  25 <div class="para arg">
  26 <h4>Parameters</h4>
  27 <dl class="par">
  28 <dt>path</dt>
  29 <dd>Pointer to the null-terminated string that specifies an <a href="filename.html">object</a> to be changed.</dd>
  30 <dt>fno</dt>
  31 <dd>Pointer to the file information structure that has a timestamp to be set in member fdate and ftime. Do not care any other members.</dd>
  32 </dl>
  33 </div>
  34
  35
  36 <div class="para ret">
  37 <h4>Return Values</h4>
  38 <p>
  39 <a href="rc.html#ok">FR_OK</a>,
  40 <a href="rc.html#de">FR_DISK_ERR</a>,
  41 <a href="rc.html#ie">FR_INT_ERR</a>,
  42 <a href="rc.html#nr">FR_NOT_READY</a>,
  43 <a href="rc.html#ok">FR_NO_FILE</a>,
  44 <a href="rc.html#np">FR_NO_PATH</a>,
  45 <a href="rc.html#in">FR_INVALID_NAME</a>,
  46 <a href="rc.html#wp">FR_WRITE_PROTECTED</a>,
  47 <a href="rc.html#id">FR_INVALID_DRIVE</a>,
  48 <a href="rc.html#ne">FR_NOT_ENABLED</a>,
  49 <a href="rc.html#ns">FR_NO_FILESYSTEM</a>,
  50 <a href="rc.html#tm">FR_TIMEOUT</a>,
  51 <a href="rc.html#nc">FR_NOT_ENOUGH_CORE</a>
  52 </p>
  53 </div>
  54
  55
  56 <div class="para desc">
  57 <h4>Description</h4>
  58 <p>The <tt>f_utime</tt> function changes the timestamp of a file or sub-directory</p>
  59 </div>
  60
  61
  62 <div class="para use">
  63 <h4>Example</h4>
  64 <pre>
  65 FRESULT set_timestamp (
  66     char *obj,     <span class="c">/* Pointer to the file name */</span>
  67     int year,
  68     int month,
  69     int mday,
  70     int hour,
  71     int min,
  72     int sec
  73 )
  74 {
  75     FILINFO fno;
  76
  77     fno.fdate = (WORD)(((year - 1980) * 512U) | month * 32U | mday);
  78     fno.ftime = (WORD)(hour * 2048U | min * 32U | sec / 2U);
  79
  80     return <em>f_utime</em>(obj, &amp;fno);
  81 }
  82 </pre>
  83 </div>
  84
  85
  86 <div class="para comp">
  87 <h4>QuickInfo</h4>
  88 <p>Available when <tt><a href="config.html#fs_readonly">FF_FS_READONLY</a> == 0</tt> and <tt><a href="config.html#use_chmod">FF_USE_CHMOD</a> == 1</tt>.</p>
  89 </div>
  90
  91
  92 <div class="para ref">
  93 <h4>See Also</h4>
  94 <p><tt><a href="stat.html">f_stat</a>, <a href="sfileinfo.html">FILINFO</a></tt></p>
  95 </div>
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