tell.html 1.5 KB

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  9. <title>FatFs - f_tell</title>
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  12. <div class="para func">
  13. <h2>f_tell</h2>
  14. <p>The f_tell function gets the current read/write pointer of a file.</p>
  15. <pre>
  16. FSIZE_t f_tell (
  17. FIL* <span class="arg">fp</span> <span class="c">/* [IN] File object */</span>
  18. );
  19. </pre>
  20. </div>
  21. <div class="para arg">
  22. <h4>Parameters</h4>
  23. <dl class="par">
  24. <dt>fp</dt>
  25. <dd>Pointer to the open file object structure.</dd>
  26. </dl>
  27. </div>
  28. <div class="para ret">
  29. <h4>Return Values</h4>
  30. <p>Returns current read/write pointer of the file.</p>
  31. </div>
  32. <div class="para desc">
  33. <h4>Description</h4>
  34. <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>
  35. <pre>
  36. <span class="k">#define</span> f_tell(fp) ((fp)->fptr)
  37. </pre>
  38. </div>
  39. <div class="para comp">
  40. <h4>QuickInfo</h4>
  41. <p>Always available.</p>
  42. </div>
  43. <div class="para ref">
  44. <h4>See Also</h4>
  45. <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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