#include "LowPower.h"

int ledPin = 15;
int sleepcycles = 12;  // every sleepcycle will last 8 secs, total sleeptime will be sleepcycles * 8 sec
bool joined = false;
bool sleeping = false;

void setup()
{
  // No setup is required for this library
    pinMode(ledPin, OUTPUT);
}

void loop() 
{
  // Enter idle state for 8 s with the rest of peripherals turned off
  // Each microcontroller comes with different number of peripherals
  // Comment off line of code where necessary

  // ATmega328P, ATmega168
    LowPower.powerDown(SLEEP_8S, ADC_OFF, BOD_OFF); 

  // ATmega32U4
  //LowPower.idle(SLEEP_8S, ADC_OFF, TIMER4_OFF, TIMER3_OFF, TIMER1_OFF, 
  //		  TIMER0_OFF, SPI_OFF, USART1_OFF, TWI_OFF, USB_OFF);

  // ATmega2560
  //LowPower.idle(SLEEP_8S, ADC_OFF, TIMER5_OFF, TIMER4_OFF, TIMER3_OFF, 
  //		  TIMER2_OFF, TIMER1_OFF, TIMER0_OFF, SPI_OFF, USART3_OFF, 
  //		  USART2_OFF, USART1_OFF, USART0_OFF, TWI_OFF);

  // ATmega256RFR2
  //LowPower.idle(SLEEP_8S, ADC_OFF, TIMER5_OFF, TIMER4_OFF, TIMER3_OFF, 
  //      TIMER2_OFF, TIMER1_OFF, TIMER0_OFF, SPI_OFF,
  //      USART1_OFF, USART0_OFF, TWI_OFF);

  // Do something here
  // Example: Read sensor, data logging, data transmission.
  digitalWrite(ledPin, HIGH);
  delay(5000);
  digitalWrite(ledPin, LOW);
  delay(1000);

        sleeping = false;
      for (int i=0;i<sleepcycles;i++)
      {
          LowPower.powerDown(SLEEP_8S, ADC_OFF, BOD_OFF);    //sleep 8 seconds
      }
}