fatfs/documents/doc/tell.html

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   9 <title>FatFs - f_tell</title>
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  13
  14 <div class="para func">
  15 <h2>f_tell</h2>
  16 <p>The f_tell function gets the current read/write pointer of a file.</p>
  17 <pre>
  18 FSIZE_t f_tell (
  19   FIL* <span class="arg">fp</span>   <span class="c">/* [IN] File object */</span>
  20 );
  21 </pre>
  22 </div>
  23
  24
  25 <div class="para arg">
  26 <h4>Parameters</h4>
  27 <dl class="par">
  28 <dt>fp</dt>
  29 <dd>Pointer to the open file object structure.</dd>
  30 </dl>
  31 </div>
  32
  33
  34 <div class="para ret">
  35 <h4>Return Values</h4>
  36 <p>Returns current read/write pointer of the file.</p>
  37 </div>
  38
  39
  40 <div class="para desc">
  41 <h4>Description</h4>
  42 <p>In this revision, the <tt>f_tell</tt> function is implemented as a macro. It does not have any validation and mutual exclusion.</p>
  43 <pre>
  44 <span class="k">#define</span> f_tell(fp) ((fp)->fptr)
  45 </pre>
  46 </div>
  47
  48
  49 <div class="para comp">
  50 <h4>QuickInfo</h4>
  51 <p>Always available.</p>
  52 </div>
  53
  54
  55 <div class="para ref">
  56 <h4>See Also</h4>
  57 <p><tt><a href="open.html">f_open</a>, <a href="lseek.html">f_lseek</a>, <a href="sfile.html">FIL</a></tt></p>
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