简单的wave文件播放器，基于ucos+fatfs +ucgui。用的是开发板TQ2440-A simple wave player. Based on ucos, fatfs and ucgui. The bord of TQ2440 is used.

S3C2440的PWM输出驱动,可以输出频率可调的PWM方波以控制步进电机-The S3C2440 PWM output drive, the PWM square wave can be output frequency is adjustable to control the stepper motor

这是基于ARM9的c编程，所用的ARM9为S3C2440，这个程序实现的是用ARM9来产生PWM波。-This is the c programming ARM9-based, is used ARM9 S3C2440, this program is used to generate PWM wave ARM9.