/*------------------------------------------------------------/
/?Open?or?create?a?file?in?append?mode
/------------------------------------------------------------*/

FRESULT?open_append?（
????FIL*?fp????????????/*?[OUT]?File?object?to?create?*/
????const?char*?path????/*?[IN]??File?name?to?be?opened?*/
）
{
????FRESULT?fr;

????/*?Opens?an?existing?file.?If?not?exist?creates?a?new?file.?*/
????fr?=?f_open（fp?path?FA_WRITE?|?FA_OPEN_ALWAYS）;
????if?（fr?==?FR_OK）?{
????????/*?Seek?to?end?of?the?file?to?append?data?*/
????????fr?=?f_lseek（fp?f_size（fp））;
????????if?（fr?!=?FR_OK）
????????????f_close（fp）;
????}
????return?fr;
}


int?main?（void）
{
????FRESULT?fr;
????FATFS?fs;
????FIL?fil;

????/*?Open?or?create?a?log?file?and?ready?to?append?*/
????f_mount（&fs?““?0）;
????fr?=?open_append（&fil?“l(fā)ogfile.txt“）;
????if?（fr?!=?FR_OK）?return?1;

????/*?Append?a?line?*/
????f_printf（&fil?“%02u/%02u/%u?%2u:%02u\n“?Mday?Mon?Year?Hour?Min）;

????/*?Close?the?file?*/
????f_close（&fil）;

????return?0;
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-03-06?16:15??STM32f103-SIM900A?GSM模塊測試程序\
?????目錄???????????0??2018-03-06?16:15??STM32f103-SIM900A?GSM模塊測試程序\CORE\
?????文件??????109142??2014-07-17?21:52??STM32f103-SIM900A?GSM模塊測試程序\CORE\core_cm4.h
?????文件???????22735??2014-07-17?21:52??STM32f103-SIM900A?GSM模塊測試程序\CORE\core_cm4_simd.h
?????文件???????17427??2014-08-28?17:13??STM32f103-SIM900A?GSM模塊測試程序\CORE\core_cmFunc.h
?????文件???????26854??2014-08-28?17:13??STM32f103-SIM900A?GSM模塊測試程序\CORE\core_cmInstr.h
?????文件???????22948??2014-08-26?15:06??STM32f103-SIM900A?GSM模塊測試程序\CORE\core_cmSimd.h
?????文件???????29605??2014-08-02?00:12??STM32f103-SIM900A?GSM模塊測試程序\CORE\startup_stm32f40_41xxx.s
?????目錄???????????0??2018-03-06?16:15??STM32f103-SIM900A?GSM模塊測試程序\FATFS\
?????目錄???????????0??2018-03-06?16:15??STM32f103-SIM900A?GSM模塊測試程序\FATFS\doc\
?????文件????????3248??2014-01-15?00:31??STM32f103-SIM900A?GSM模塊測試程序\FATFS\doc\css_e.css
?????文件????????3661??2014-01-15?00:31??STM32f103-SIM900A?GSM模塊測試程序\FATFS\doc\css_j.css
?????目錄???????????0??2018-03-06?16:15??STM32f103-SIM900A?GSM模塊測試程序\FATFS\doc\en\
?????目錄???????????0??2018-03-06?16:15??STM32f103-SIM900A?GSM模塊測試程序\FATFS\doc\img\
?????文件????????1063??2013-09-18?21:47??STM32f103-SIM900A?GSM模塊測試程序\FATFS\doc\img\app1.c
?????文件????????1597??2013-10-18?21:41??STM32f103-SIM900A?GSM模塊測試程序\FATFS\doc\img\app2.c
?????文件????????3811??2014-01-13?20:56??STM32f103-SIM900A?GSM模塊測試程序\FATFS\doc\img\app3.c
?????文件???????10365??2014-01-07?15:10??STM32f103-SIM900A?GSM模塊測試程序\FATFS\doc\img\app4.c
?????文件????????1414??2011-09-02?22:10??STM32f103-SIM900A?GSM模塊測試程序\FATFS\doc\img\f1.png
?????文件????????1458??2007-02-10?03:12??STM32f103-SIM900A?GSM模塊測試程序\FATFS\doc\img\f2.png
?????文件????????1039??2007-02-10?03:12??STM32f103-SIM900A?GSM模塊測試程序\FATFS\doc\img\f3.png
?????文件????????2335??2008-01-05?20:27??STM32f103-SIM900A?GSM模塊測試程序\FATFS\doc\img\f4.png
?????文件????????2479??2008-01-05?20:27??STM32f103-SIM900A?GSM模塊測試程序\FATFS\doc\img\f5.png
?????文件????????1436??2010-08-21?10:13??STM32f103-SIM900A?GSM模塊測試程序\FATFS\doc\img\f6.png
?????文件???????11388??2013-05-12?12:31??STM32f103-SIM900A?GSM模塊測試程序\FATFS\doc\img\f7.png
?????文件???????11421??2014-02-19?22:38??STM32f103-SIM900A?GSM模塊測試程序\FATFS\doc\img\funcs.png
?????文件????????2401??2009-03-20?21:57??STM32f103-SIM900A?GSM模塊測試程序\FATFS\doc\img\layers.png
?????文件????????2379??2009-06-13?21:48??STM32f103-SIM900A?GSM模塊測試程序\FATFS\doc\img\layers3.png
?????文件????????7932??2013-12-27?12:20??STM32f103-SIM900A?GSM模塊測試程序\FATFS\doc\img\modules.png
?????文件???????19068??2008-10-18?19:31??STM32f103-SIM900A?GSM模塊測試程序\FATFS\doc\img\rwtest.png
?????文件????????8153??2010-09-13?10:55??STM32f103-SIM900A?GSM模塊測試程序\FATFS\doc\img\rwtest2.png
............此處省略195個文件信息