Chapter 2.5 - Breadboard Microcontroller 8051 Mounting and Led Blinking - Source Code

The source code section can be found in every chapter where it is specified to actually code for our 8051 Microcontroller. As we have seen earlier , we have to program 8051 Microcontroller to blink a single led. This is our first program in the whole chapter, we recommend you to go to basics section and see "how to program a 8051 Microcontroller ?" . And "Keil tutorial for 8051 Micrcontroller" and then come back. Following is the code for blinking a single led with 8051 Microcontroller.

	//*******************************************************************
	//www.go8051.com
	//Chapter 2
	//Breadboard Microcontroller 8051 Mounting and Led Blinking
	//Created By go8051.com
	// Open source
	//email : 8051blog@gmail.com
	//*******************************************************************

	#include<reg51.h> // Header file for 8051 microcontroller
	sbit led = P1^0; // defining Port 1.0 and naming it as led
	void delay(); // function prototype for delay function( this function will be used to provide a delay in between blinking led)
	void main() // start of main function
	{
	led=0; // configure led pin as output 0-output & 1-input
	while(1) // infinite loop
	{
	led=1; // turn off led by giving logic 1 (that means +5v) which will turn off the led
	delay(); // stop or give a 1 sec delay so it can be visible
	led=0; // turn on led by giving logic 0 (that means 0v) which will turn on the led
	delay(); // stop or give a 1 sec delay so it can be visible
	}
	}

	// this delay function will provide a delay of 1.5 secs approximately
	void delay() // function definition of delay function
	{
	int i,j; // declaring variable i and j
	for(i=0;i<=1275;i++) // first for loop which will loop 1275 times
	for(j=0;j<=1;j++); // second loop which will loop for 2 times
	}

view raw led_blink.c hosted with ❤ by GitHub

And here is the whole zip file of the code, click the below button to download the zip file

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