#include <avr/interrupt.h>
#include <avr/sleep.h>

volatile int risingEdge = 0;

void setup() {
  cli(); // Clear global interrupt

  DDRD |= B01000000; // Set Pin 6 as output
  DDRD &= B01111111; // Set Pin 7 as input
  DDRB &= B111110; // Set Pin 8 as input

  // Enabling both the PCINT0 and PCINT2 to activate
  PCICR |= B00000101;

  PCMSK0 |= B00000001; // Mask for Pin 8
  PCMSK2 |= B10000000; // Mask for Pin 7

  sei();

  // Set the appropriate sleep mode
  set_sleep_mode(SLEEP_MODE_PWR_DOWN);

}

ISR(PCINT0_vect) {
  // Toggle the LED in Pin 6
  PORTD ^= B01000000;
}

ISR(PCINT2_vect) {
  // Toggle the LED in Pin 6
  PORTD ^= B01000000;
}

void loop() {
  // Serial.println(value); // Used mainly for debugging
  sleep_mode();
}