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- #include<reg52.h>
- sbit key=P2^0; //按键控制步进电机的方向
- unsigned char speed=5; //步进电机的转速
- //八拍方式驱动，顺序为A AB B BC C CD D DA
- unsigned char code clockWise[]={0x01,0x03,0x02,0x06,0x04,0x0c,0x08,0x0d};
- void delay(unsigned char z)
- {
- unsigned char x,y;
- for(x=0;x<z;x++)
- for(y=0;y<110;y++);
- }
- void main()
- {
- unsigned char i;
- while(1)
- {
- for(i=0;i<8;i++)
- {
- if(key) //按键未按下，正转
- {
- P0=clockWise[i];
- delay(speed);
- }
- else //按键按下，反转
- {
- P0=clockWise[8-i];
- delay(speed);
- }
- }
- }
- }
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