#include <Arduino.h>
#include <U8g2lib.h>

U8G2_SSD1306_128X64_NONAME_1_SW_I2C u8g2(U8G2_R0, 11, 10);

#define image_width  32
#define image_height 12
static unsigned char C_image_bits[] = {
 0xf8,0xff,0xff,0x1f,0xfc,0xff,0xff,0x3f,0xfc,0xff,0xff,0x3f,
 0xfc,0xff,0xff,0x3f,0xf8,0xff,0xff,0x1f,0x00,0x00,0x00,0x00,
 0x38,0x8e,0x71,0x1c,0x1c,0x87,0xe1,0x38,0x0e,0xc7,0xe3,0x70,
 0x87,0xc3,0xc3,0xe1,0x80,0xe3,0xc7,0x01,0x00,0xe0,0x07,0x00};
static unsigned char B_image_bits[] = {
 0xf8,0xff,0xff,0x1f,0xfc,0xff,0xff,0x3f,0xfc,0xff,0xff,0x3f,
 0xfc,0xff,0xff,0x3f,0xf8,0xff,0xff,0x1f,0x00,0x00,0x00,0x00,
 0x38,0x8e,0x71,0x1c,0x1c,0x87,0xe1,0x38,0x00,0xc7,0xe3,0x00,
 0x00,0xc0,0x03,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
static unsigned char A_image_bits[] = {
 0xf8,0xff,0xff,0x1f,0xfc,0xff,0xff,0x3f,0xfc,0xff,0xff,0x3f,
 0xfc,0xff,0xff,0x3f,0xf8,0xff,0xff,0x1f,0x00,0x00,0x00,0x00,
 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};

int circle_count = 0;
bool flag_fresh = false;

void setup(void) {
  u8g2.begin();
}

void loop(void) {
  u8g2.firstPage();
  do {
    /*u8g2.setFont(u8g2_font_ncenB10_tr);
    u8g2.drawButtonUTF8(10, 20, U8G2_BTN_BW1, 0,  0,  0, "Hello World!" );
    u8g2.drawCircle(30, 30, 10, U8G2_DRAW_ALL);
    u8g2.drawLine(20, 5, 5, 32);
    u8g2.drawBox(105,0,16,4);
    u8g2.drawLine(104, 101, 63, 63);*/

    //Icon

    switch(circle_count){
      case 0: 
        u8g2.drawXBM(90, 0, image_width, image_height, A_image_bits);
        flag_fresh = true;
        break;
      case 1:
        u8g2.drawXBM(90, 0, image_width, image_height, B_image_bits);
        flag_fresh = true;
        break;
      case 2:
        u8g2.drawXBM(90, 0, image_width, image_height, C_image_bits);
        flag_fresh = false;
        break;
    }
  } while ( u8g2.nextPage() );

  if (flag_fresh){
    circle_count += 1;
  } else {
    circle_count = 0;
  }

  delay(300);
}