#include "DHT.h"
#include "nada.h"

#define DHTPIN 2     
#define DHTTYPE DHT22 
#define LED_GR 13  
#define LED_YL 12
#define LED_RD 11
#define BUZZER 3

DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(9600);
  Serial.println(F("DHTxx test!"));
  pinMode(LED_GR, OUTPUT);
  pinMode(LED_YL, OUTPUT);
  pinMode(LED_RD, OUTPUT);
  pinMode(BUZZER, OUTPUT);
  digitalWrite(LED_GR,LOW);
  digitalWrite(LED_YL,LOW);
  digitalWrite(LED_RD,LOW);
  noTone(BUZZER);
  dht.begin();
}

void loop() {
  delay(200);

  float h = dht.readHumidity();
  float t = dht.readTemperature();

  if (isnan(h) || isnan(t)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }  
  if (t > 50)
  {
    digitalWrite(LED_GR,HIGH);    
    digitalWrite(LED_YL,HIGH);
    digitalWrite(LED_RD,HIGH);
    alarm();
  }else if (t > 30)
  {
    digitalWrite(LED_GR,HIGH);    
    digitalWrite(LED_YL,HIGH);
    digitalWrite(LED_RD,LOW);
    nokia();
  }else{
    digitalWrite(LED_GR,HIGH);
    digitalWrite(LED_YL,LOW);
    digitalWrite(LED_RD,LOW);
    noTone(BUZZER);
  }

  Serial.print(F("Humidity: "));
  Serial.print(h);
  Serial.print(F("%  Temperature: "));
  Serial.print(t);
  Serial.println(F("°C "));
}

void alarm()
{
  int i=0;
  for(i=700;i<800;i++){
  tone(BUZZER,i);
  delay(15);
  }
  for(i=800;i>700;i--){
  tone(BUZZER,i);
  delay(15);
  }
}

void nokia()
{
  tone(BUZZER, NOTE_E6);
  delay(150);
  tone(BUZZER, NOTE_D6);
  delay(150);
  tone(BUZZER, NOTE_FS5);
  delay(200);
  tone(BUZZER, NOTE_GS5);
  delay(250);

  tone(BUZZER, NOTE_CS6);
  delay(150);  
  tone(BUZZER, NOTE_B5);
  delay(150);
  tone(BUZZER, NOTE_D5);
  delay(200);
  tone(BUZZER, NOTE_E5);
  delay(250);

  tone(BUZZER, NOTE_B5);
  delay(150);  
  tone(BUZZER, NOTE_A5);
  delay(150);
  tone(BUZZER, NOTE_CS5);
  delay(200);
  tone(BUZZER, NOTE_E5);
  delay(200);
  tone(BUZZER, NOTE_A5);
  delay(350);
  noTone(BUZZER);
  delay(200);
}