飞思卡尔的mx21处理器的pwm驱动程序源码，绝对好用。-the mx21 Freescale's processor pwm driver source code, absolutely everything.

ARM的串口，LED以及PWM裸机程序，对于初学ARM的朋友很有用-ARM' s serial port, LED as well as the PWM bare-metal process, is useful for beginners to use ARM' s friends

这是mini2440的pwm波驱动程序，它试图利用mini2440输出pwm波来控制步进电机-This is the driver for mini2440 to output pwm wave, it is trying to use the mini2440 s pwm wave to control a stepper motor