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LED with 8051

1: LED with 8051

#include <reg51.h>

//sfr P1 = 0x90;
//sfr P3 = 0xB0;

void delay(unsigned int i)
{
    unsigned int j,k;
    for(j=0;j<=i;j++)
    {
        for(k=0;k<256;k++);
    }
}

void main(void)
{
    unsigned int i,j;
    P1 = 0xff;
    P3 = 0xff;
    while(1)
    {
        P1 = 0x01;
        delay(4000);
        for(i=0;i<=10;i++)
        {   
            P1 = P1 << 1;   
            delay(4000);
        }
        //P1 = 0x00;
        delay(4000);
        P1 = 0x80;
        delay(4000);
        for(j=0;j<=10;j++)
        {
            P1 = P1 >> 1;
            delay(4000);
        }           
    }
}


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