#include "U8glib.h"

U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_NO_ACK);	// Display which does not send AC

char s[50];
int n;

String S;

void setup(void) {

  u8g.begin();

  u8g.setFont(u8g_font_6x13);
  //u8g.setFont(u8g_font_unifont);
  u8g.setFontPosTop();

}

void loop(void) {

  strcpy(s, "Wed, 24 Nov 2024");
  sendToScreen();

  delay(2000);

  for (n = 0; n < 5; n++) {
    sprintf(s, "%d", n);
    sendToScreen();
    delay(2000);
  }

  strcpy(s, "The End");
  sendToScreen();

  while (1);

  //delay(50);
}


void draw(void) {
  // graphic commands to redraw the complete screen should be placed here

  //u8g.drawFrame(0, 0, 128, 64);

  //strcpy(s, S.c_str());
  //sprintf(s, "%s", a);
  u8g.drawStr((128 - u8g.getStrWidth(s)) / 2, 4, s);


}

void clearDisplay(void) {
  u8g.firstPage();
  do {
    u8g.setColorIndex(0);
    u8g.drawBox(0, 0, 128, 64);
    u8g.setColorIndex(1);
  } while ( u8g.nextPage() );
}


void sendToScreen(void) {

  clearDisplay();

  u8g.firstPage();
  do {
    draw();
  } while ( u8g.nextPage() );

}