#include "DHT.h"
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <Fonts/FreeSansBold9pt7b.h>
#include <Fonts/Picopixel.h>

#define ledBiru 13
#define ledKuning 12
#define ledMerah 11
#define DHTPin 2
#define DHTType DHT22

DHT dht(DHTPin, DHTType);
int buzzerPin = 10;
Adafruit_SSD1306 display(128, 64, &Wire, -1);

void setup() {
  // put your setup code here, to run once:
  pinMode(ledBiru, OUTPUT);
  pinMode(ledKuning, OUTPUT);
  pinMode(ledMerah, OUTPUT);
  pinMode(buzzerPin, OUTPUT);
  
  digitalWrite(ledBiru, LOW);
  digitalWrite(ledKuning, LOW);
  digitalWrite(ledMerah, LOW);
  noTone(buzzerPin);

  dht.begin();

  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
}

void loop() {
  // put your main code here, to run repeatedly:
  float t = dht.readTemperature();

  if(t < 29){
    noTone(buzzerPin);
    digitalWrite(ledKuning, LOW);
    digitalWrite(ledMerah, LOW);
    digitalWrite(ledBiru, HIGH);   

    display.clearDisplay();
    display.setFont();
    display.setTextColor(1);

    display.setCursor(22, 10);
    display.print("SUHU : ");  
    display.print(t); display.print(" C");

    display.setCursor(4, 32);
    display.print("Suhu Terlalu Rendah");
    display.display();
  }
  else if ((t>=29) && (t<=35)){
    noTone(buzzerPin);
    digitalWrite(ledBiru, LOW);
    digitalWrite(ledMerah, LOW);
    digitalWrite(ledKuning, HIGH);

    display.clearDisplay();
    display.setFont();
    display.setTextColor(1);

    display.setCursor(22, 10);
    display.print("SUHU : ");  
    display.print(t); display.print(" C");

    display.setCursor(8, 32);
    display.print("Suhu Cukup Optimal");
    display.display();
  }
  else {
    digitalWrite(ledKuning, LOW);
    digitalWrite(ledBiru, LOW);
    digitalWrite(ledMerah, HIGH);
    tone(buzzerPin, 150);

    display.clearDisplay();
    display.setFont();
    display.setTextColor(1);

    display.setCursor(22, 10);
    display.print("SUHU : ");  
    display.print(t); display.print(" C");

    display.setCursor(4, 32);
    display.print("Suhu Terlalu Tinggi");
    display.display();
  }
}