longte.c

单片机驱动步进电机代码（三） 适于各类单片机

#include <reg51.h>
#include <math.h>

#define uint unsigned int

//sbit P2_4=P2^4;

//uint t=25000;
uint i=0;
uint ch[8]={0XFE,0XFC,0XFD,0XF9,0XFB,0XF3,0XF7,0XF6};

void usec(uint c)	//延时１微秒
{
	uint d;
	for(d=0;d<c;d++);
}


/*void msec(uint a)	//延时１毫秒
{
	uint b,c;
	for(b=0;b<a;b++)
		for(c=0;c<425;c++);  
} */


main()
{ 
	//P1=P1&0x0d;            //无动作
	//P2=0;
   TMOD=0x01;  //初始化定时器，产生脉宽	NEED TO BE CHECKED
    ET0=1;
	TR0=1;
	EA=1;


for(;;)
{     
    for(i=0;i<8;i++)	   
	 {
	 P2=ch[i];
	 usec(203);
	 }      
	       
}
/*for(v=22000;v<500;v=v-500)
{
    do
    {	   
	 P2_4=1;
	 usec(v);
	 P2_4=0;
	 usec(t-v);
	 count++;           
	 } while(count<1000);
	 count=0;
      
} */
}