rfid based unmanned petrol pump

[sudhakargupta35]

I need code for "unmanned petrol pump system" using ATmega16 and rfid.
when any user goes to the petrol pump he need to show the rfid tag to rfid reader .the mc then checks if the user is registered or not.if it is registered then mc checks the balance and shows the balance on lcd.and asks the user to enter the amount for which he wants to fill petrol.after that the mc checks if the user available balance is more then the entered amount. if the condition is true then mc calculates the amount of time it will rotate the motor for a given amount of money. the user can recharge the rfid tag.