fatfs v0.10 Oct 02,2013:

- Added selection of character encoding on the file. (_STRF_ENCODE)
- Added f_closedir().
- Added forced full FAT scan for f_getfree(). (_FS_NOFSINFO)
- Added forced mount feature with changes of f_mount().
- Improved behavior of volume auto detection.
- Improved write throughput of f_puts() and f_printf().
- Changed argument of f_chdrive(), f_mkfs(), disk_read() and disk_write().
- Fixed f_write() can be truncated when the file size is close to 4GB.
- Fixed f_open(), f_mkdir() and f_setlabel() can return incorrect error code.

doc/en/printf.html

@@ -39,13 +39,13 @@ int f_printf (
 
 <div class="para ret">
 <h4>Return Values</h4>
-<p>When the function succeeded, number of characters written is returned. When the function failed due to disk full or any error, an <tt>EOF (-1)</tt> will be returned.</p>
+<p>When the function succeeded, it returns number of characters written. When the function failed due to disk full or any error, an <tt>EOF (-1)</tt> will be returned.</p>
 </div>
 
 
 <div class="para desc">
 <h4>Description</h4>
-<p>The <tt>f_printf()</tt> is a wrapper function of <a href="putc.html"><tt>f_putc()</tt></a> and <a href="puts.html"><tt>f_puts()</tt></a>. The format control directive is a sub-set of standard library shown as follos:</p>
+<p>The <tt>f_printf()</tt> is a wrapper function of <a href="write.html"><tt>f_write()</tt></a>. The format control directive is a sub-set of standard library shown as follos:</p>
 <ul>
 <li>Type: <tt>c C s S d D u U x X b B</tt></li>
 <li>Size: <tt>l L</tt></li>
@@ -57,7 +57,7 @@ int f_printf (
 <div class="para comp">
 <h4>QuickInfo</h4>
 <p>Available when <tt>_FS_READONLY == 0</tt> and <tt>_USE_STRFUNC</tt> is 1 or 2. When it is set to 2, <tt>'\n'</tt>s contained in the output are converted to <tt>"\r\n"</tt>.</p>
-<p>When the FatFs is configured to Unicode API (<tt>_LFN_UNICODE == 1</tt>), the generated UCS-2 string is written to the file in UTF-8 encoding. If not the case, the byte characters will be written directly.</p>
+<p>When FatFs is configured to Unicode API (<tt>_LFN_UNICODE == 1</tt>), data types on the srting fuctions, <tt>f_putc()</tt>, <tt>f_puts()</tt>, <tt>f_printf()</tt> and <tt>f_gets()</tt>, is also switched to Unicode. The character encoding on the file to be read/written via those functions is selected by <tt>_STRF_ENCODE</tt> option.</p>
 </div>
 
 
@@ -68,12 +68,12 @@ int f_printf (
     f_printf(&amp;fil, "%6d,%3d%%", -200, 5);  <span class="c">/* "  -200,  5%" */</span>
     f_printf(&amp;fil, "%-6u", 100);           <span class="c">/* "100   " */</span>
     f_printf(&amp;fil, "%ld", 12345678L);      <span class="c">/* "12345678" */</span>
-    f_printf(&amp;fil, "%04x", 0xA3);          <span class="c">/* "00a3" */</span>
-    f_printf(&amp;fil, "%08LX", 0x123ABC);     <span class="c">/* "00123ABC" */</span>
+    f_printf(&amp;fil, "%04x", 0xAB);          <span class="c">/* "00ab" */</span>
+    f_printf(&amp;fil, "%08LX", 0x123ABCL);    <span class="c">/* "00123ABC" */</span>
     f_printf(&amp;fil, "%016b", 0x550F);       <span class="c">/* "0101010100001111" */</span>
     f_printf(&amp;fil, "%s", "String");        <span class="c">/* "String" */</span>
-    f_printf(&amp;fil, "%-4s", "abc");         <span class="c">/* "abc " */</span>
-    f_printf(&amp;fil, "%4s", "abc");          <span class="c">/* " abc" */</span>
+    f_printf(&amp;fil, "%5s", "abc");          <span class="c">/* "  abc" */</span>
+    f_printf(&amp;fil, "%-5s", "abc");         <span class="c">/* "abc  " */</span>
     f_printf(&amp;fil, "%c", 'a');             <span class="c">/* "a" */</span>
     f_printf(&amp;fil, "%f", 10.0);            <span class="c">/* f_printf lacks floating point support */</span>
 </pre>