main.c

单片机驱动步进电机代码（一） 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 v=0;
uint count=0;

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=(TMOD&0x0f)|0x20;  //初始化定时器，产生脉宽	NEED TO BE CHECKED
	TH1=56;
	TL1=TH1;
    ET1=1;
	TR1=1;
	EA=1;
for(v=200;v<25000;v=v+500)
{
    do
    {	   
	 P2_4=1;
	 usec(v);
	 P2_4=0;
	 usec(t-v);
	 count++;           
	 } while(count<1000);
	 count=0;
      
}
/*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;
      
} */
}