stepm.cpp

大学微型计算机接口技术实验源代码,直接就可以运行,包含了C++和asm代码,比较前面.

//*-------------------------------------------------------*/
//*    Cexp1.cpp(步进电机控制接口实验)                     */
//*    步进电机 Source File                               */
//*   Copyright (c) 2001 by HUST                         */
//*------------------------------------------------------*/
#include <conio.h>
#include <stdio.h>
#include <dos.h>//delay,outportb,inportb
#include <stdlib.h>

void main()
{
	int xu[8]={0x05,0x15,0x14,0x54,0x50,0x51,0x41,0x45};//相序表
	unsigned int i=0;
	unsigned char recv;
	printf("\nPress sw2 to start!\n");
	printf("If you want to quit,press sw1!\n");
	outportb(0x303,0x81);//初始化

	outportb(0x303,0x09);//置PC4=1关闭74LS373
	do{
		recv = inportb(0x302);
	}while((0x02&recv)!=0);//查SW2按下
     outportb(0x303,0x08);//置PC4=0，打开74LS373
	do{
	   outportb(0x300,xu[i]);//送相序代码到PA口 
	  // i++;
	   //if(i==8) i=0;
	   delay(100);//延时
	}while((0x01&inportb(0x302))!=0);//查SW1按下
	outportb(0x303,0x09);//置PC4=1，关闭74LS373

}