步进实验.c

PC机串口通讯让51内核单片机控制直流电机转动固定的角度

#include<reg934.h>
unsigned int temp,i,x,y;
sbit cwa=P2^7;
sbit cwb=P0^1;
sbit cwc=P0^3;
sbit cwd=P2^4;
sbit fscxa=P2^6;
sbit fscxb=P0^2;
sbit fscxc=P2^5;
sbit fscxd=P2^3;
void init();
void timer0();
main()
{  
	P0M1=0x00;
	P0M2=0x0e;
	P1M1=0x2c;
	P1M2=0xcc;
	P2M1=0x00;
	P2M2=0xfb;
	cwa=0;
	cwb=0;
	cwc=0;
	cwd=0;
	fscxa=1;
	fscxb=1;
	fscxc=1;
	fscxd=1;
	temp=0;
	i=0;
	init(); 
	for(;;) ;

 }

  void init()
 {			
  EA=1;
  ET0=1;
  TMOD=0x01;   	 
  TH0=(65536-2000)/256;    
  TL0=(65536-2000)%256;
  TR0=1; 
 }

   void timer0() interrupt 1
{ 
 	   TH0=(65536-2000)/256;    
       TL0=(65536-2000)%256;
	   
	   fscxb=!fscxb;
	   fscxa=!fscxa;
	   fscxc=!fscxc;
	   fscxd=!fscxd;
	   i++;
	   if(i==4320)
	   {
			cwa=!cwa;
			cwb=!cwb;
			cwc=!cwc;
			cwd=!cwd;
	   		i=0;
			for(x=1000;x>0;x--)
	  	       for(y=1000;y>0;y--);

	   }
 }