本实验使用按键方式控制步进电机的转动 * * 接线方法：A>P1.4，A- >P1.5，B >P1.6，B- >P1.7，GND，VCC * * 按按钮“K1”，步进电机正传 * * 按按钮“K2”，步进电机反转 * * 按按钮“K3”，步进电机停止 * *-In this study, key way to control the stepper motor rotation* * Connection methods: A> P1.4,

通过键盘输入方波频率，实现对步进电机的控制，并通过数码管显示步进电机转速，整个程序全部用51汇编语言实现。-Through the keyboard input square wave frequency, stepper motor control and stepper motor speed through the digital display, the entire program all 51 assembly language.

test code by verilogHDL. SERVO MOTER operation code at FPGA. AHB and APB BUS Architecture.