#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <DHT.h>

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define DHTPIN 2     
#define DHTTYPE DHT22

DHT dht(DHTPIN, DHTTYPE);
Adafruit_SSD1306 oled(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

int pinled_blue = 12;
int pinled_red = 13;

void setup() {
  Serial.begin(115200);

  if(!oled.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("failed to start SSD1306 OLED"));
    while(1);
  }

  // delay(1000);
  oled.clearDisplay();

  oled.setTextSize(1);
  oled.setTextColor(WHITE);
  oled.setCursor(0, 2);
  oled.println("Hello World!");
  oled.display();

  dht.begin();

  pinMode(pinled_blue, OUTPUT);
  pinMode(pinled_red, OUTPUT);
}

void loop() {
  // delay(1000);

  float temp = dht.readTemperature();
  float hum = dht.readHumidity();

  Serial.print("Suhu: ");Serial.print(temp);
  Serial.print(" ");
  Serial.print("Kelembapan: ");
  Serial.println(hum);

  oled.clearDisplay();

  oled.setTextSize(1);
  oled.setCursor(0,0);
  oled.print("Suhu: ");
  oled.setTextSize(2);
  oled.setCursor(0,10);
  oled.println(temp);

  oled.setTextSize(1);
  oled.setCursor(0, 35);
  oled.print("Kelembapan: ");
  oled.setTextSize(2);
  oled.setCursor(0, 45);
  oled.println(hum);
  oled.display();

  if(temp >= 30) {
    digitalWrite(pinled_red, HIGH);
    digitalWrite(pinled_blue, LOW);
  } else {
    digitalWrite(pinled_blue, HIGH);
    digitalWrite(pinled_red, LOW);
  }
}