Write 89C51 C language program to toggle all bits of port P2 continuously with 500 ms delay.

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written 6.0 years ago by

teamques10 ★ 69k

• modified 4.6 years ago

embedded systems

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814views

written 6.0 years ago by

teamques10 ★ 69k

• modified 6.0 years ago

The program

#include <reg51.h>

void delay (unsigned int);

void main (void)

{

    while(1) //repeat loop

    {

        P2=0xff; //toggle all bits of port2

        delay (500); //add delay

        P2=0x00; //toggle all bits of port2

        delay (500); //add delay

    }

}

void delay (unsigned int i)

{

    unsigned int x, y;

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

    for (y=0; y<1275; y++);

}

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