$27)($Embedded Systems$)$ Write a C program that controls a Joystick using Interrupts. A Joystick has six buttons: LEFT, RIGHT, UP and DOWN, and BACK and HOME. Your first four buttons can be implemented as GPIO protocol and the last two buttons $($BACK and HOME$)$ should be implemented using Interrupts. You must show a control flow diagram, initialization code for each button as inputs and also, pseudo code to display the command $($e$.$g$.$ UP$)$ in a LCD display when a button is pressed.