step.c

Stepper Motor to control the direction

#include <REG51.H>

sbit one = P2^0;
sbit two = P2^1;
sbit three = P2^2;
sbit four = P2^3;

void delay();


void main(){
P2=0xFF;
        while(1){

		while(one==1)
		{
		        stepper = 0x0C;
                delay();
                stepper = 0x06;
                delay();
                stepper = 0x03;
                delay();
                stepper = 0x09;
                delay();
        }
	 while(two==1)
		{
		        stepper = 0x09;
                delay();
                stepper = 0x03;
                delay();
                stepper = 0x06;
                delay();
                stepper = 0x0C;
                delay();
        }
	   while(three==1)
		{
		        stepper = 0x0C;
                delay();
                stepper = 0x09;
                delay();
                stepper = 0x03;
                delay();
                stepper = 0x06;
                delay();
        }
		while(four==1)
		{
		        stepper = 0x03;
                delay();
                stepper = 0x06;
                delay();
                stepper = 0x0C;
                delay();
                stepper = 0x09;
                delay();
        }
		}
}

void delay(){
        unsigned char i,j;
        for(i=0;i<6;i++)
                for(j=0;j<255;j++);
                        
}