AT89S52 Led Blinking

Step 1 - Intall the USBasp Driver

USBasp Driver

Step 2-  Go To the offical website and update with the latest driver

https://www.fischl.de/usbasp/

Now USBasp will be discovered when USBasp hardware  is plugged

Step 3 :- Download and install Keil for 8051 micro-controller https://www.keil.com/demo/eval/c51.htm

Step 4:- Open Keil UVision5 ->Create A new project -> Select Micro-controller AT89S52 -> Add startup file -> right click on source group 1 -> Add new item to the group 'source group 1' -> add .c file -> copy and paste below c source code  -> right click on 'Target 1' -> click on Option for Target - 'Target 1 ' -> Go to output Tab -> enable 'Create Hex file' -> build the project -> now hex file will be created

Build the project to generate Hex file

Step 5:- LED blinking C Program code ; connect led between Port 2-Pin 7 to GND

---------------------

#include <REGX52.h>

delay(unsigned int y)

{

    unsigned int i,j;

    for(i=0;i<y;i++)

    {

        for(j=0;j<1275;j++)

        {

        }

    }

}

main()

{

    while(1)

    {

       P2_7 = 0;

       delay(100);

        P2_7 = 1;

       delay(100);

    }

}

---------------------

Step 6:- Open Progisp , you will see under [program state] PRG ISP  will become enabled from gray scale 

Download link for progisp :- Progisp1.72.rar 

Step 7 :- select the micro controller  , AT89S52

click on File - >  Load Flash -> select hex file -> click on Auto to load hex file to micro controller

Step 8:- if you get chip enable program error ,firstly check all the connections if problem persist , reset your micro controller by setting RESET pin to High also try reinstalling USBasp driver 

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