Write an Embedded C program to LED Blinking from left to right in PORT 1

#include"reg51.h"

void main(void)

{

unsigned int i;

while(1)

{

P1=0x01;

for(i=0;i<30000;i++);

P1=0x00;

for(i=0;i<30000;i++);

P1=0x02;

for(i=0;i<30000;i++);

P1=0x00;

for(i=0;i<30000;i++);

P1=0x04;

for(i=0;i<30000;i++);

P1=0x00;

for(i=0;i<30000;i++);

P1=0x08;

for(i=0;i<30000;i++);

P1=0x00;

for(i=0;i<30000;i++);

P1=0x10;

for(i=0;i<30000;i++);

P1=0x00;

for(i=0;i<30000;i++);

P1=0x20;         

for(i=0;i<30000;i++);

P1=0x00;

for(i=0;i<30000;i++);

P1=0x40;

for(i=0;i<30000;i++);

P1=0x00;

for(i=0;i<30000;i++);

P1=0x80;

for(i=0;i<30000;i++);

P1=0x00;

for(i=0;i<30000;i++);

}}

Another Simple Code For LED Blinking From Right To Left In PORT 1

#include <AT89x52.H>

void delay(int time)        //This function produces a delay in msec.

{

    int i,j;

    for(i=0;i<time;i++)

     for(j=0;j<1275;j++);

}

void main (void) 

{

  unsigned char j;                    /* LED var */

  while (1)

   {                         /* Loop forever */

    for (j=0x01; j< 0x80; j<<=1) 

      {   /* Blink LED 0, 1, 2, 3, 4, 5, 6 */

      P1 = j;                     

            delay(500);

    }

    for (j=0x80; j> 0x01; j>>=1)

             {   /* Blink LED 6, 5, 4, 3, 2, 1 */

      P1 = j;                         /* Output to LED Port */

      delay(500);

    }

  }

}

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