#include <dht.h>
#include <TinyWireM.h>
#include <Tiny4kOLED.h>
#define DHT21_PIN PB1
const unsigned char  img_thermometer[] PROGMEM = {
  0x00, 0xfe, 0x03, 0xfe, 0x50,
  0x00, 0xff, 0x00, 0xff, 0x55,
  0x60, 0x9f, 0x80, 0x9f, 0x65,
};
dht DHT;
float getTemperature() {
  return DHT.temperature;
}
float getHumidity() {
  return DHT.humidity;
}
void setup() {
  pinMode(DHT21_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(FONT8X16);
  // To clear all the memory
  oled.clear();
  oled.on();
  delay(3000);
  
}

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

  DHT.read22(DHT21_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(15, 4);
    oled.print("Temp: ");
    // Print to display
    oled.print(temperature, 1);
    oled.print(" °C  ");
    // Update humidity
    float humidity = getHumidity();
    // Set cursor
    oled.setCursor(15, 6);
    oled.print("Humi: ");
    // Print to display
    oled.print(humidity, 1);
    oled.print(" %  ");

    oled.bitmap(2, 5, 7, 8, img_thermometer);
  }
}