61 lines
1.9 KiB
HTML
61 lines
1.9 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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<html lang="en">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
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<meta http-equiv="Content-Style-Type" content="text/css">
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<link rel="up" title="FatFs" href="../00index_e.html">
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<link rel="stylesheet" href="../css_e.css" type="text/css" media="screen" title="ELM Default">
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<title>FatFs - f_sync</title>
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</head>
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<body>
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<div class="para">
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<h2>f_sync</h2>
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<p>The f_sync flushes the cached information of the wriiting file.</p>
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<pre>
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FRESULT f_sync (
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FIL* <em>FileObject</em> // Pointer to the file object structure
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);
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</pre>
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</div>
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<div class="para">
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<h4>Parameters</h4>
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<dl class="par">
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<dt>FileObject</dt>
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<dd>Pointer to the file object to be flushed.</dd>
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</dl>
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</div>
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<div class="para">
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<h4>Return Values</h4>
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<dl class="ret">
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<dt>FR_OK (0)</dt>
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<dd>The function succeeded.</dd>
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<dt>FR_RW_ERROR</dt>
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<dd>Any error occured in low level disk I/O.</dd>
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<dt>FR_INCORRECT_DISK_CHANGE</dt>
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<dd>Incorrect disk removal, such as a medium change during any file is opend, has been occured.</dd>
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<dt>FR_NOT_ENABLED</dt>
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<dd>FatFs module has not been enabled.</dd>
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</dl>
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</div>
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<div class="para">
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<h4>Description</h4>
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<p>The f_sync() writes back the cached information of the file being written. This performs the same function as f_close() but the file is left opened and can continue file read/write operations to the file. This is suitable for applications that open files for a long time in writing mode, such as data logger. Performing f_sync() of periodic or immediataly after f_write() can minimize risk of data loss due to sudden blackout or unintentional disk removal. This function is not supported in read-only configuration.</p>
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</div>
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<div class="para">
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<h4>References</h4>
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<p><tt><a href="close.html">f_close</a></tt></p>
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</div>
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<p class="foot"><a href="../00index_e.html">Return</a></p>
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</body>
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</html>
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