#include <dht.h>
#include <TinyWireM.h> // thư viện I2C ATtiny
#include <Tiny4kOLED.h> // Đây là thư viện dành cho ATTiny85 để sử dụng màn hình OLED 128x64 pixel, hỗ trợ SSD1306, trên I 2 C

#define DHT22_PIN PB1
dht DHT;

void splash() {
  oled.clear();
  oled.setCursor(15, 1);
  oled.print(F("ATtiny85+SSD1306"));

  oled.setCursor(35, 7);
  oled.print(F("wokwi.com"));
}

float getTemperature() {
  return DHT.temperature;
}

float getHumidity() {
  return DHT.humidity;
}

void setup() {
  pinMode(DHT22_PIN, INPUT);

  oled.begin(128, 64, sizeof(tiny4koled_init_128x64br), tiny4koled_init_128x64br);

  // Two fonts are supplied with this library, FONT8X16 and FONT6X8
  oled.setFont(FONT6X8);

  // To clear all the memory
  oled.clear();
  oled.on();

  splash();

  delay(3000);
  
}

void loop() {
  static long startTime = 0;
  long currentTime;

  DHT.read22(DHT22_PIN);

  // Get current time
  currentTime = millis();

  // Checks 1 second passed
  if ((currentTime - startTime) > 1000) {
    startTime = currentTime;

    // Update temperature
    float temperature = getTemperature();

    // Set cursor
    oled.setCursor(57, 4);

    // Print to display
    oled.print(temperature, 1);
    oled.print("C  ");

    // Update humidity
    float humidity = getHumidity();

    // Set cursor
    oled.setCursor(57, 5);

    // Print to display
    oled.print(humidity, 1);
    oled.print("%  ");
  }
}