The first task at hand is to set up the endpoints appropriately for this example. The following code switches the CPU clock speed to 48 MHz (since at power-on default it is 12 MHz), and sets up EP2 as a Bulk OUT endpoint, 4x buffered of size 512, a

1：FIFO和LIFO程序；2：CRC校验码算法-1: FIFO and LIFO procedure; 2: CRC verification code algorithm

C language source code 采用C程序实现任意大小的FIFO(C language source code of any size FIFO is realized by using C program)

C language source code 采用C程序实现任意大小的FIFO()

C language source code 采用C程序实现任意大小的FIFO()