#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <Arduino.h>
#include <uRTCLib.h>

Adafruit_SSD1306 oled(128, 64, &Wire, -1);
uRTCLib rtc(0x68);

char daysOfTheWeek[7][12] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};

void setup()
{pinMode(A0, OUTPUT); //S3
 pinMode(A1, OUTPUT); //S2
 pinMode(A2, OUTPUT); //S1
 pinMode(A3, OUTPUT); //S0
 Serial.begin(9600);

URTCLIB_WIRE.begin();

 if (!oled.begin(SSD1306_SWITCHCAPVCC, 0x3C))
 {Serial.println(F("failed to start SSD1306 OLED"));
  while (1);
 }

 delay(1000); 
 oled.setTextSize(1);         // set text size
  oled.setTextColor(WHITE);          
 oled.clearDisplay(); // clear display
 oled.drawRoundRect(64,0,64,32,1,WHITE);
  oled.drawTriangle(0, 11, 7, 0, 14, 11, WHITE);
  oled.drawCircle(30, 43, 5, WHITE);
   oled.setCursor(5, 3); 
  oled.print("!");
  oled.setCursor(3, 40);
   oled.setTextColor(1); 
   oled.setTextColor(SSD1306_BLACK, SSD1306_WHITE); 
    oled.print("CH ");
  //   oled.setCursor(28, 40); 
  //  oled.print("-");
oled.drawRect(29,43,3,1,WHITE);

    oled.fillCircle(60, 30, 10, WHITE);
  //  oled.print("K");
 //oled.setTextSize(1);         // Atur ukuran text
// oled.setTextColor(WHITE);    // Atur warna text
// oled.setCursor(0, 10);       // Atur posisi text pada display
// oled.println("Hello World"); // Text yang dicetak
 oled.display();              // menampilkan display OLED
}

void loop()
{digitalWrite(A0, LOW);
 digitalWrite(A1, LOW);
 digitalWrite(A2, LOW);
 digitalWrite(A3, LOW);
 Serial.println(analogRead(A6));
 delay(500);


oled.clearDisplay(); // clear display
oled.setTextColor(1); 
  oled.setCursor(0, 0);
  oled.print(rtc.day());
  oled.print('/');
  oled.print(rtc.month());
  oled.print('/');
  oled.print(rtc.year());

  oled.print(" (");
  oled.print(daysOfTheWeek[rtc.dayOfWeek()-1]);
  oled.print(") ");
  oled.setCursor(0, 1);
  oled.print(rtc.hour());
  oled.print(':');
  oled.print(rtc.minute());
  oled.print(':');
  if (rtc.second() < 10) {
    oled.print(0);
  }
  oled.println(rtc.second());
  delay(1000);
oled.display();  


}