8. Consider a push button switch SWO connected to pin INTO external interrupts of an ATMegas AVR. 8 LEDS are connected to port PBO PB7 on the same AVR. These LEDS are connected such a lit LED displays that the output port is on logic level 1. On start-up, TASK1 is executed and continue indefinitely. If the push-button switch SWO is pressed, TASKI is paused and TASK2 is carried out after which TASK1 is resumed TASKI- A roll action is performed using the LEDs: The first LED is lit and roll down to the last LED then back to the first LED. This operation is done indefinitely TASK2- ALL the LEDs blink five (5) times. Write a complete C program that implements the desired tasks