#define LED_VERDE 4
#define LED_GALBEN 3
#define LED_ROSU 2
#define SENZOR_TEMPERATURA_PIN 0
 
#define NIVEL_TEMPERATURA_VERDE 15
#define NIVEL_TEMPERATURA_GALBEN 20
#define NIVEL_TEMPERATURA_ROSU 30
 
void setup() {
 
  Serial.begin(9600);
 
  pinMode(LED_VERDE, OUTPUT);
  pinMode(LED_GALBEN, OUTPUT);
  pinMode(LED_ROSU, OUTPUT);
 
 
  digitalWrite(LED_VERDE, LOW);
  digitalWrite(LED_GALBEN, LOW);
  digitalWrite(LED_ROSU, LOW);
}
 
void loop() {
 
  int temperaturaCelsius = citesteTemperatura(30);
 
  if (temperaturaCelsius > NIVEL_TEMPERATURA_VERDE){
    digitalWrite(LED_VERDE, HIGH);
  } 
  else {
    digitalWrite(LED_VERDE, LOW);
  }
  if (temperaturaCelsius > NIVEL_TEMPERATURA_GALBEN){
    digitalWrite(LED_GALBEN, HIGH);
  } 
  else {
    digitalWrite(LED_GALBEN, LOW);
  }
  if (temperaturaCelsius > NIVEL_TEMPERATURA_ROSU){
    digitalWrite(LED_ROSU, HIGH);
  } 
  else {
    digitalWrite(LED_ROSU, LOW);
  }
 
  Serial.print(temperaturaCelsius);
  Serial.println(",");
}
 
float citesteTemperatura(int count) {
  float temperaturaMediata = 0;
  float sumaTemperatura;
  for (int i =0; i<count; i++) {
    int reading = analogRead(SENZOR_TEMPERATURA_PIN);
    float voltage = reading * 5.0;
    voltage /= 1024.0;
    float temperatureCelsius = (voltage - 0.5) * 100 ;
    sumaTemperatura = sumaTemperatura + temperatureCelsius;
  }
  return sumaTemperatura / (float)count;
}