[SOLVED] Simple led on off circuit 8051

[maxim10373]

Friends
This is a simple LED on off with a push button program. can you help me to add ; when push the button more than twenty (20) seconds
The LED should be OFF.

regards
AJAY

[#include<reg52.h> /* special function register declarations   */
                  /* for the intended 8051 derivative         */

sbit LED_pin = P2^0;     //Defining LED PIN
sbit switch_pin = P0^0;  //Defining Switch PIN

void Delay(int); //Function prototype declaration

void main (void) 
{
   switch_pin = 1; // Making Switch PIN input
   LED_pin=1;      //LED off initially
	 
   while(1)     //infinite loop 
   {
      if(switch_pin == 0 ) //If switch pressed
      {
	    LED_pin = 0; //LED ON
	    Delay(2000); //Delay
	     LED_pin = 1; //LED OFF	
      }
   }
}

void Delay(int k)
{
    int j;
    int i;
    for(i=0;i<k;i++)
    {
        for(j=0;j<100;j++)
        {
        }
    }
}]

 

[andre_luis]

The same problem has been reported in other threads; you are not implementing any counter based on interrupt timer. Take a look at the examples available for the compiler you're using.