#include<reg51.h>
sbit ir=P2^0;
sbit buzzer=P0^7;
stepper();
delay(unsigned int);
unsigned char i;
unsigned int z,s;
main()
{
buzzer=0;
while(1)
{
if(ir==0)
{
buzzer=1;
stepper();
buzzer=0;
}
else
{
buzzer=0;
}
}
}
stepper()
{
for(s=0;s<14;s++)
{
for(z=0x01;z<0x0a;z=z*2)
{
P3=z;
delay(5);
}
}
for(s=0;s<14;s++)
{
for(z=0x08;z>0x00;z=z/2)
{
P3=z;
delay(5);
}
}
}
delay(unsigned int time)
{
unsigned int i,j;
for(i=0;i<time;i++)
for(j=0;j<1275;j++);
}