這是程序代碼

#include<reg52.h>
#include <intrins.h>
 
sbit wave=P0^0;
unsigned char Flag;//定義正反轉(zhuǎn)和停止標(biāo)志位
//sbit KEY = P3^3;


unsigned char code F_Rotation[4]={0xf1,0xf2,0xf4,0xf8}; //正轉(zhuǎn)表格
unsigned char code B_Rotation[4]={0xf8,0xf4,0xf2,0xf1}; //反轉(zhuǎn)表格

 void Delay(unsigned int i)//延時(shí)
{
 while(--i);
}

 

void T0ISR(void) interrupt 1
{
 unsigned char i;
 unsigned char a;
 a=TL1;
 while(a>3&& a<11)
 {
     for(i=0;i<4;i++)      //4相
      {
      P2=F_Rotation;  //輸出對(duì)應(yīng)的相 可以自行換成反轉(zhuǎn)表格
      Delay(500);        //改變這個(gè)參數(shù)可以調(diào)整電機(jī)轉(zhuǎn)速 ,數(shù)字越小，轉(zhuǎn)速越大
   }
   }
  while(a<3||a>11)
   {
  
    for(i=0;i<4;i++)      //4相
      {
      P2=B_Rotation;  //輸出對(duì)應(yīng)的相 
      Delay(500);        //改變這個(gè)參數(shù)可以調(diào)整電機(jī)轉(zhuǎn)速 ,數(shù)字越小，轉(zhuǎn)速越大
   }
   }
   a=0;
   TL1=0;
  TL0=0x18;
     TH0=0x1c;


}

 void delay1()
{
unsigned char a,b,c;

for(a=0;a<1;a++)
   for(b=0;b<1;b++)
     for(c=0;c<61;c++);
}

void main()
{

TMOD=0x40;
TL0=0x18;
TH0=0x1c;
TR0=1;
TR1=1;
ET0=1;
EX1=1;         //外部中斷0開
IT1=1;         //邊沿觸發(fā)
EA=1;


 while(1)
   {
     wave=0;
  delay1();
  wave=1;
 
 }   
 }