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#include "DHT.h"
#include <SPI.h>
#include <LoRa.h>

//define the pins used by the LoRa transceiver module
#define SCK 5
#define MISO 19
#define MOSI 27
#define SS 18
#define RST 14
#define DIO0 26

//915E6 for North America
#define BAND 915E6

// How many minutes the ESP should sleep
#define DEEP_SLEEP_TIME 5

// defines poll frequency
unsigned long previousMillis = 30000; 
const long interval = 30000;

//loop counter
int counter = 0;

void goToSleep()
{
  // Configure the timer to wake us up!
  esp_sleep_enable_timer_wakeup(DEEP_SLEEP_TIME * 60L * 1000000L);
  Serial.println("Going To Sleep Now...");
 
 // Go to sleep! Zzzz
  esp_deep_sleep_start();
  //esp_light_sleep_start();
}

void setup() {
  Serial.begin(115200);
  Serial.println("Welcome");

   //SPI LoRa pins
  SPI.begin(SCK, MISO, MOSI, SS);
  //setup LoRa transceiver module
  LoRa.setPins(SS, RST, DIO0);
  
  while (!LoRa.begin(BAND)) {
    Serial.println(".");
    delay(500);
  }
  
  Serial.println("LoRa Initializing OK!");
  delay(2000);
}

void loop() {

  // Wait a few seconds between measurements.
  unsigned long currentMillis = millis();
  if (currentMillis - previousMillis >= interval) { 
    previousMillis = currentMillis;
    counter++;

    Serial.print("Pass #: ");
    Serial.println(counter);
  
    if (counter >= 2) {
      Serial.println("Sleep Time?...");
      goToSleep();
    }
   }
}