22.c

步进电机的一个小算法。还可以

#include<reg51.h>
unsigned char code tab_zheng[12]={0x80,0xc0,0xe0,0x40,0x60,0x70,0x20,0x30,0xb0,0x10,0x90,0xd0}; //正转
unsigned char code tab_fan[12] = {0xd0,0x90,0x10,0xb0,0x30,0x20,0x70,0x60,0x40,0xe0,0xc0,0x80};

void delay(unsigned char t)
{ 
  unsigned char i,j;
  for(i=0;i<t;i++)
  for(j=124;j>0;j--);
 } 

void main()
{ 
  unsigned char i;
  unsigned int j;
  while(1)
  {
    P1=0;
  	P0=0xff;
	for(j=100;j>0;j--)
	{
	   for(i=0;i<12;i++)
	     {
	       P2=tab_zheng[i];
           delay(30);
	       P2=0xff;
	       delay(30);	
	      }	 
	 }
	 //while(1);
  }
}