#include <OneWire.h>
#include <DallasTemperature.h>

const int oneWireBus = 4;     

OneWire oneWire(oneWireBus);
DallasTemperature sensors(&oneWire);

const int PIR_SENSOR_OUTPUT_PIN = 13;
int warm_up;

void setup() {
  pinMode(oneWireBus, INPUT);
  pinMode(PIR_SENSOR_OUTPUT_PIN, INPUT);
  Serial.begin(115200);
  sensors.begin();
}

void loop() {
  DS18D20();
  delay(1000);
  PIR();
}

void DS18D20(){
  sensors.requestTemperatures(); 
  float temperatureC = sensors.getTempCByIndex(0);
  float temperatureF = sensors.getTempFByIndex(0);
  Serial.print(temperatureC);
  Serial.println("ºC");
  Serial.print(temperatureF);
  Serial.println("ºF");
  delay(2000);
}

void PIR(){
  int sensor_output;
  sensor_output = digitalRead(PIR_SENSOR_OUTPUT_PIN);
  if( sensor_output == LOW )
  {
    if( warm_up == 1 )
     {
      Serial.print("Warming Up\n\n");
      warm_up = 0;
      delay(2000);
    }
    Serial.print("No object in sight\n\n");
    delay(1000);
  }
  else
  {
    Serial.print("Object detected\n\n");   
    warm_up = 1;
    delay(1000);
  } 
}