#include "U8glib.h"

U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_DEV_0 | U8G_I2C_OPT_NO_ACK | U8G_I2C_OPT_FAST); // Fast I2C / TWI

int progress = 0;

void setup() {
  u8g.setFont(u8g_font_tpssb);
  u8g.setColorIndex(1);
}

void loop() {
  u8g.firstPage();
  do {
    u8g.drawCircle(25, 50, "Progress Bar");
    u8g.drawCircle(64, 32, 128, 10);
    u8g.drawCircle(25, 50, progress, 15);
  } while ( u8g.nextPage() );

  if (progress < 50) {
    progress++;
  } else {
    progress = 0;
  }
}