一个写得很好的SD卡读写，基于AVR MEGA8单片机，包括FAT文件系统的实现，支持SDHC，包含原理图，值得一读！-sdcard reader,base on AVR MEGA8 microcontroller,including FAT filesystem implementation, and circuit! easy to read

在sd卡上移植fatfs,移植成功，已经能用，-FatFs is a generic FAT file system module for small embedded systems. The FatFs is written in compliance with ANSI C and completely separated from the disk I/O layer. Therefore it is independent of hardware architecture. It ca