基于LM3S系列的步进电机驱动器的程序。很容易移植到其它MCU系统。对于设计步进电机驱动器的同行有很好的参考。-Based on the LM3S series of stepper motor driver procedures. It is easy to transplant to other MCU system. For the design of the stepper motor drive counterparts have a good reference.