#include <Adafruit_Sensor.h>
#include <DHT.h>
#include <DHT_U.h>
#include <Adafruit_SSD1306.h>
#include <Wire.h>
#include <Fonts/FreeSansBold9pt7b.h>
#include <Fonts/Picopixel.h>


#define LEDM_PIN 3
#define LEDK_PIN 4
#define LEDB_PIN 5
#define DHTPIN 2     
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

int buzzerPin = 7;
float t;
Adafruit_SSD1306 display(128, 64, &Wire, -1);

void updateDisplay() {
  display.clearDisplay();
  display.setFont();
  display.setTextColor(1);

  display.setCursor(22, 2);
  display.print("PENGECEKAN SUHU");

  if(t < 29){
    display.setCursor(32, 32);
    display.print("SUHU RENDAH");
    display.setTextColor(3);
    //oled
  }
  else if(t >= 29 && t <= 35 ){
    display.setCursor(32, 32);
    display.print("SUHU CUKUP");
    display.setTextColor(4);
    //oled
  }
  else if(t > 35 ){
    display.setCursor(32, 32);
    display.print("SUHU TINGGI");
    display.setTextColor(5);
    //oled    
  }
  display.display();
}

void setup() {
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  updateDisplay();
  Serial.begin(9600);
  Serial.println(F("DHTxx test!"));
  pinMode(LEDM_PIN, OUTPUT);
  pinMode(LEDK_PIN, OUTPUT);
  pinMode(LEDB_PIN, OUTPUT);
  pinMode(buzzerPin, OUTPUT);
  dht.begin();
}

void loop() {
  delay(1000);
  updateDisplay();
  t = dht.readTemperature();

  if ( isnan(t)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }

  float hic = dht.computeHeatIndex(t, false);
  Serial.print(t);

  if(t < 29){    
    digitalWrite(LEDB_PIN, HIGH);
    digitalWrite(LEDM_PIN, LOW); 
    digitalWrite(LEDK_PIN, LOW);                
    noTone(buzzerPin);
    Serial.println(F("°C SUHU RENDAH"));
  }
  else if (t >= 29 && t <= 36){
    digitalWrite(LEDK_PIN, HIGH);
    digitalWrite(LEDM_PIN, LOW); 
    digitalWrite(LEDB_PIN, LOW);
    noTone(buzzerPin); 
    Serial.println(F("°C SUHU CUKUP"));
  }
  else {
    digitalWrite(LEDM_PIN, HIGH);
    digitalWrite(LEDK_PIN, LOW); 
    digitalWrite(LEDB_PIN, LOW);
    Serial.println(F("°C SUHU PANAS"));
       tone(buzzerPin, 150);
    delay(1000);
  }
}