STM32单板上实现了基于USB的可移动的磁盘，插上USB线后可以对电脑上的磁盘的读写来读写NAND FLASH-STM32 board implements the USB-based removable disk, the disk can be read on the computer to read and write NAND FLASH plug in the USB cable

STM32f103 ucosII 实现MP3功能，包含文件系统，可读取内存卡文件，很使用的初级学习代码。-STM32f103 ucosII realize MP3 function, including file system, can read memory card file, is the use of the primary learning code.