#include <Adafruit_SSD1306.h>
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
#define OLED_RESET 4 // Reset pin # (or -1 if sharing Arduino reset pin)
#define SCREEN_ADDRESS 0x3C ///< See datasheet for Address; 0x3D for 128x64, 0x3C for 128x32
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
unsigned long  x = 4294967295-100;
unsigned long  sec=0;
unsigned long  ss=0;
unsigned long  m=0;
unsigned long  h=0;
unsigned long  d=0;
void setup() {
  if(!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;); // Don't proceed, loop forever
  }
  display.setTextColor(1);        // Draw white text
  display.setTextSize(3); 
}
void loop() {
  display.clearDisplay();
  display.setCursor(0,0);
  ss=x;
  ss=int((sec/60-int(sec/60))*60);
  m=int((sec/3600-int(sec/3600))*60);
  h=int((sec/86400-int(sec/86400))*24);
  d=int((sec/604800-int(sec/604800))*7);
  //# 4y=int((sec/126230400-int(sec/126230400)))
  //display.print("d=",d,"sumotuwethfrsa"[d*2:d*2+2],"h="+("0"+str(h))[-2:],"m="+("0"+str(m))[-2:],"s="+("0"+str(ss))[-2:],chr(13),end="");
  display.print("d=");
  display.print(d);
  display.print("h=");
  display.print(h);
  display.print("m=");
  display.print(m);
  display.print("s=");
  display.print(ss);
  display.print(x);
  display.display();
  x++;
}