Lukas König - sleep mode m328p

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

#define pin2 2
#define LED 13

void WakeUp()
{
  // Nic
}

void setup()
{
  Serial.begin(9600);
  pinMode(pin2, INPUT_PULLUP);
  pinMode(LED, OUTPUT);
  set_sleep_mode(SLEEP_MODE_PWR_DOWN);
  Serial.println("Sleep mode demo");
}

void loop()
{
  Serial.println("Uspavam");
  Serial.flush();
  attachInterrupt(digitalPinToInterrupt(pin2), WakeUp, LOW);
  sleep_enable();
  sleep_cpu();
  detachInterrupt(digitalPinToInterrupt(pin2));
  Serial.println("Vzbuzeno");
  Serial.flush();
  digitalWrite(LED, HIGH);
  delay(1000);
  digitalWrite(LED, LOW);
}