51单片机控制(按键)2相步进电机 L298N驱动

/*本程序用于2相步进电机控制L298N驱动

通过独立按键进行控制转速和转向*/

#include //52系列单片机头文件

#define uchar unsigned char //宏定义

#define uint unsigned int //宏定义

sbit key1=P3^4; //解除锁定

sbit key2=P3^5; //反转2圈

sbit key3=P3^6; //反转4圈

sbit key4=P3^7; //正转4圈

//延时

void delay(uint xms)

{

uint i,j;

for(i=xms;i>0;i--) //i=xms即延时约xms毫秒for(j=110;j>0;j--);

}

//主函数

void main()

{

uint i=200;

P3=0xff;

while(1)

{

if(key1==0)

{

delay(10);

if(key1==0)

{

while(i--)

{

P1=0X08;

delay(2);

P1=0X0a;

delay(2);

P1=0X02;

delay(2);

P1=0X06;

delay(2);

P1=0X04;

P1=0X05;

delay(2);

P1=0X01;

delay(2);

P1=0X09;

delay(2);

}

while(!key1);

}

}

i=200;

if(key2==0)

{

delay(10);

if(key2==0) {

while(i--)

{

P1=0X09;

delay(2);

P1=0X01;

delay(2);

P1=0X05;

delay(2);

P1=0X04;

delay(2);

P1=0X06;

delay(2);

P1=0X02;

delay(2);

P1=0X0a;

delay(2);

P1=0X08;

delay(2);

}

while(!key2); }

}

i=50;

if(key3==0)

{

if(key3==0)

{

while(i--)

{

P1=0X08;

delay(5);

P1=0X0a;

delay(5);

P1=0X02;

delay(5);

P1=0X06;

delay(5);

P1=0X04;

delay(5);

P1=0X05;

delay(5);

P1=0X01;

delay(5);

P1=0X09;

delay(5);

}

while(!key3);

}

}

if(key4==0)

{

delay(10);

if(key4==0)

{

P1=0Xff;

while(!key4);

}

}

}

}