#include "RTClib.h"

#include <Wire.h>
#include "SSD1306Ascii.h"
#include "SSD1306AsciiWire.h"

#define I2C_ADDRESS 0x3C

#define RST_PIN 4

RTC_DS1307 rtc;
DateTime CurrentTime;
int Hour,Minute,Second;
String DisplayString;

SSD1306AsciiWire oled;

void setup() {
  Serial.begin(9600);

  // initialize as I2C master
  Wire.begin();
  Wire.setClock(400000L);

  oled.begin(&Adafruit128x64, I2C_ADDRESS, RST_PIN);
  oled.clear();
  oled.setFont(ZevvPeep8x16);
  oled.clear();
  oled.print("______TIME______");
  oled.println();

  if (! rtc.begin()) {
    Serial.println("Couldn't find RTC");
    Serial.flush();
    abort();
  }
}

void loop() {
  CurrentTime = rtc.now();
  Hour=CurrentTime.hour();
  Minute=CurrentTime.minute();
  Second=CurrentTime.second();
  DisplayString="    " + String(Hour) + ":" ;
  if (Minute<10){
    DisplayString=DisplayString + "0" + String(Minute) + ":";
  } else{
    DisplayString=DisplayString + String(Minute) + ":";
  }
  if (Second<10){
    DisplayString=DisplayString + "0" + String(Second);
  } else{
    DisplayString=DisplayString + String(Second);
  }
  oled.SSD1306Ascii::setCursor(0,4);
  oled.print(DisplayString);
  delay(1000);
}