fatfs 相信大家都不陌生，现在上petit fatfs 文件系统是fatfs的简化版，更使用于RAM和ROM较小的芯片上。源代码，移植例程，移植教程，SD卡资料，都在里面啦。-fatfs believe that everyone is familiar with, the now, the petit fatfs file system is a simplified version of fatfs and more use on a smaller chip RAM and ROM. Source code, routine transplant, transplant tutorial, SD card information, all inside!-