GPIO-步进电机控制实验 熟悉s3c2410a的GPIO基本功能和设置方法。 掌握步进电机的驱动原理。 掌握如何利用GPIO功能控制步进电机-GPIO-stepper motor control experiment s3c2410a familiar with the basic functions of the GPIO methods and settings. Grasp the principle of stepper motor drivers. Grasp how t