X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=bertos%2Ffs%2Ffatfs%2Fdoc%2Fen%2Fprintf.html;fp=bertos%2Ffs%2Ffatfs%2Fdoc%2Fen%2Fprintf.html;h=482d07da13c73442b11f17e094ebcac91aa3f196;hb=ff4ad791a0fdf06f0295ecf9d76319a9b90f921d;hp=0000000000000000000000000000000000000000;hpb=90799b8b250623464b9fafb5c49bebd02d23bb61;p=bertos.git diff --git a/bertos/fs/fatfs/doc/en/printf.html b/bertos/fs/fatfs/doc/en/printf.html new file mode 100644 index 00000000..482d07da --- /dev/null +++ b/bertos/fs/fatfs/doc/en/printf.html @@ -0,0 +1,72 @@ + + +
+ + + + +The f_printf function writes formatted string to the file.
++int f_printf ( + FIL* FileObject, /* File object */ + const char* Foramt, /* Format stirng */ + ... +); ++
When the function succeeded, number of characters written is returned. When the function failed due to disk full or any error, an EOF will be returned.
+The f_printf() is a wrapper function of f_putc() and f_puts(). The format control directive is a sub-set of standard library. It supports c s d u X for the data type, l for the precision and 0 for the flags.
+This function is available when read-write configuration and _USE_STRFUNC is 1 or 2.
++ f_printf(&fil, "%6d", -200); // " -200" + f_printf(&fil, "%02u", 5); // "05" + f_printf(&fil, "%ld", 12345678L); // "12345678" + f_printf(&fil, "%08lX", 1194684UL); // "00123ABC" + f_printf(&fil, "%s", "String"); // "String" + f_printf(&fil, "%c", 'a'); // "a" ++