#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#include <Fonts/FreeMonoBoldOblique12pt7b.h>
#include <Fonts/FreeSans9pt7b.h>

#define SCREEN_WIDTH 128 // OLED display lebar dalam piksel
#define SCREEN_HEIGHT 64 // OLED display tinggi dalam piksel

// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
#define OLED_RESET     -1 // Reset pin # (or -1 if sharing Arduino reset pin)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

//global variabel untuk membuat tulisan rata tengah
byte width, height;
int16_t  x, y;
uint16_t w, h;


void setup() {
  Serial.begin(115200);
  if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("SSD1306 allocation failed"));
    for (;;); // Don't proceed, loop forever
  }
  display.clearDisplay();

  //atur ukuran tulisan
  display.setTextSize(1);      // ukuran normal 1:1
  display.setTextColor(WHITE); // tulisan warna putih

  display.setFont(&FreeMonoBoldOblique12pt7b);
  for (byte i = 0; i <= 12; i++) {
    display.clearDisplay();
    Serial.println(i);
    display.setCursor(0, i*10);
    display.print("Hello");
    display.display();
    delay(100);
  }

  display.setFont(&FreeSans9pt7b);
  for (byte i = 0; i <= 12; i++) {
    display.clearDisplay();
    Serial.println(i);
    display.setCursor(0, i*10);
    display.print("Hello");
    display.display();
    delay(100);
  }

  //go back to original font
  display.setFont();
  for (byte i = 0; i <= 12; i++) {
    display.clearDisplay();
    Serial.println(i);
    display.setCursor(0, i*10);
    display.print("Hello");
    display.display();
    delay(100);
  }
}

void loop() {

}