DE2开发板的音频控制程序，对WM8731的控制通过I2C总线来实现的，该代码是音频解/编码器配置的参考程序。-DE2 board audio control program the WM8731 control through the I2C bus, the code is the reference program audio solution/encoder configuration.

步进电机的转动控制程序,可用于变速,和编码器混合使用-Stepper motor rotation control program can be used for variable speed, and mixed use encoder