#define uS_TO_S_FACTOR 1000000  
#define TIME_TO_SLEEP  10        

RTC_DATA_ATTR int bootCount = 0;



void print_wakeup_reason(){                 
  esp_sleep_wakeup_cause_t wakeup_reason;

  wakeup_reason = esp_sleep_get_wakeup_cause();

  switch(wakeup_reason)
  {
    case ESP_SLEEP_WAKEUP_EXT0 : Serial.println("PUSHED BUTTON caused the system to WAKEUP"); break;
    case ESP_SLEEP_WAKEUP_TIMER : Serial.println("TIMER caused the system to WAKEUP"); break;
    default : Serial.printf("DeepSleep didn't wake up ESP32: %d\n",wakeup_reason); break;
  }
}

void setup(){
  Serial.begin(115200);
  delay(1000);

  pinMode(32,OUTPUT);         

  pinMode(33,INPUT_PULLUP);  

  for(int i=0;i<5;i++)
{
  digitalWrite(32,HIGH);  
  delay(1000);
  digitalWrite(32,LOW);
  delay(1000);
  }


 
  ++bootCount;
  Serial.println("Reboot count number: " + String(bootCount));

  
  print_wakeup_reason();

  
 
  esp_sleep_enable_ext0_wakeup(GPIO_NUM_33,0);


  esp_sleep_enable_timer_wakeup(TIME_TO_SLEEP * uS_TO_S_FACTOR);
 
  Serial.println("ESP32 is going into DeepSleep for " + String(TIME_TO_SLEEP) +
  " Seconds");


  Serial.println("Going to sleep now......");
  delay(1000);
  Serial.flush();
  esp_deep_sleep_start();