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/***********************************************************************************
*  标题:  步进电机试验五（正转一圈 反转一圈）            *
*                        *
*    通过本例程了解步进马达使用及驱动程序编写            *
*;   单双八拍工作方式：                                                            *
*;   A-AB-B-BC-C-CD-D-DA (即一个脉冲,转 3.75 度)                *
*                                                                                 *
*  请学员一定要消化掉本例程                                                       *
                                                            *
**************************************************************************************/   
 
 #include "reg52.h"

 void delay(unsigned int t);

 //Motor
sbit F1 = P1^0;
sbit F2 = P1^1;
sbit F3 = P1^2;
sbit F4 = P1^3;

unsigned char code FFW[8]={0xfe,0xfc,0xfd,0xf9,0xfb,0xf3,0xf7,0xf6}; //反转
unsigned char code FFZ[8]={0xf6,0xf7,0xf3,0xfb,0xf9,0xfd,0xfc,0xfe}; //正转
unsigned int  K;

/**********************************************************************
*                   *
*                       步进电机驱动          *
*                   *
***********************************************************************/
void  motor_ffw()
 {
   unsigned char i;
   unsigned int  j;
   for (j=0; j<12; j++)         //转1*n圈
    {

      for (i=0; i<8; i++)       //一个周期转30度
        {
          if(K==1) P1 = FFW[i]&0x1f;  //取数据
    if(K==2) P1 = FFZ[i]&0x1f;
          delay(5);                   //调节转速
        }
     }
 }

/******************************************************
*
*              延时程序
*
********************************************************/
 void delay(unsigned int t)
{                          
   unsigned int k;
   while(t--)
   {
     for(k=0; k<80; k++)
     { }
   }
}

main()
 {
    while(1)
 {
  K=1;
  motor_ffw();
  K=2;
  motor_ffw();

  }
}