#include <SPI.h>              //Library SPI
#include <Wire.h>             //Library Wire
#include <Adafruit_GFX.h>     //Library GFX
#include <Adafruit_SSD1306.h> //Library OLED SSD1306
 
#define SCREEN_WIDTH 128 //Panjang LCD OLED
#define SCREEN_HEIGHT 64 //Tinggi LCD OLED
 
#define OLED_RESET -1    //Pin reset terhubung dengan arduino
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

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

const unsigned char epd_bitmap_temperature [] PROGMEM = {
  0xff, 0xf8, 0xf8, 0xf8, 0xf2, 0x78, 0xf7, 0x78, 0xf5, 0x78, 0xf5, 0x78, 0xf5, 0x78, 0xe8, 0xb8, 
  0xe8, 0xb8, 0xe8, 0xb8, 0xf7, 0x78, 0xfd, 0xf8, 0xff, 0xf8
};
const unsigned char epd_bitmap_barometer [] PROGMEM = {
  0xff, 0xf8, 0xf0, 0x78, 0xe0, 0x38, 0xe7, 0x38, 0xc2, 0x18, 0xc2, 0x18, 0xe0, 0x38, 0xe0, 0x38, 
  0xf8, 0xf8, 0xf8, 0xf8, 0x80, 0x08, 0x80, 0x08, 0xff, 0xf8
};
const unsigned char epd_bitmap_height [] PROGMEM = {
  0xff, 0xf8, 0xfd, 0xf8, 0xf8, 0xf8, 0xfd, 0xf8, 0xfd, 0xf8, 0xfd, 0xf8, 0xfd, 0xf8, 0xfd, 0xf8, 
  0xfd, 0xf8, 0xfd, 0xf8, 0xf8, 0xf8, 0xfd, 0xf8, 0xff, 0xf8
};

bool blinkState = false;
unsigned long previousMillis = 0;
const long interval = 500; // Blinking interval in milliseconds

void loop() {
  unsigned long currentMillis = millis();

  // Toggle blinkState every interval milliseconds
  if (currentMillis - previousMillis >= interval) {
    // Save the last time we blinked
    previousMillis = currentMillis;

    // Toggle the blink state
    blinkState = !blinkState;
  }

  display.clearDisplay(); //clear before new display

  display.setCursor(18,5);
  display.setTextSize(1);
  display.setTextColor(WHITE);
  display.println("Portable Weather");

  display.drawBitmap(0, 16, epd_bitmap_temperature, 13, 13, 1);
  display.setCursor(20,18);
  display.setTextSize(1);
  display.setTextColor(blinkState ? WHITE : BLACK); // Toggle visibility
  display.print("20");
  display.setTextColor(WHITE);
  display.println(" *");

  display.drawBitmap(0, 32, epd_bitmap_barometer, 13, 13, 1);
  display.setCursor(20,34);
  display.setTextSize(1);
  display.setTextColor(blinkState ? WHITE : BLACK); // Toggle visibility
  display.println("1260");
  display.setTextColor(WHITE);
  display.println(" hPa");

  display.drawBitmap(0, 48, epd_bitmap_height, 13, 13, 1);
  display.setCursor(20,50);
  display.setTextSize(1);
  display.setTextColor(blinkState ? WHITE : BLACK); // Toggle visibility
  display.println("20");
  display.setTextColor(WHITE);
  display.println(" mDPL");


  display.display(); //show data
}