SD卡上的Tini-FatFs0.07，测试了将SD卡上的txt类型文件内容通过串口输出, 测试读文件速度大约在1M BYTEs/s。-Tini, SD card-FatFs0.07 test txt type file on the SD card through the serial port output, test reading a file speed around 1M BYTEs/s.

fatfs win32 根据官网修改，默认挂载第二个硬盘，需电脑上u盘或者sd启动操作，方便fatfs系统学习-Fatfs win32 website according to modify, the default mount a second hard drive, to computer u disk or sd start operation, convenient fatfs system study

rtthread，基于SD卡中的 Elm FatFS 文件系统-rtthread, based on the SD card file system Elm FatFS