int rosu=2;
int buton=4;
int verde=7;
int senTem=A0;
int galben=5;
int contor=0;

void setup() {
  // put your setup code here, to run once:
  pinMode(rosu,OUTPUT);
  pinMode(buton,INPUT);
  pinMode(verde,OUTPUT);
 // pinMode(galben,OUTPUT);
  digitalWrite(rosu,HIGH);
  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  if(digitalRead(buton)==HIGH && contor==0)
  {
    digitalWrite(verde,HIGH);
    digitalWrite(rosu,LOW);

    Serial.print("Temperatura: ");
    float temp=fctTemp(10,senTem);
    Serial.print(temp);
    Serial.print(" ");
    Serial.print(176);
    Serial.println("C");
    delay(2000);
    if(temp>=27 && temp<28)
    {
      analogWrite(galben,50);
    }
    if(temp>=28 && temp<29)
    {
      analogWrite(galben,150);
    }
    if(temp>=29 && temp<30)
    {
      analogWrite(galben,200);
    }
    if(temp>=30)
    {
      analogWrite(galben,250);
    }
    contor=1;
    delay(1000);
  }

  if(contor==1 && digitalRead(buton)==HIGH)
  {
    digitalWrite(verde,LOW);
    digitalWrite(rosu,HIGH);

  }
}

float fctTemp(int c,int  p){
  float tempMediata=0;
  float sumaTemp=0;
  for(int i=0;i<c;i++)
  {
    int reading=analogRead(p);
    float v=reading*5.0;
    v /=1024.0;
    float tempCelsius=(v -0.5)*100;
    sumaTemp=sumaTemp+tempCelsius;
  }
  return sumaTemp/(float)c;
}