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

Adafruit_SSD1306 oled(128, 64, &Wire, -1);

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

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

 delay(2000);         
 oled.clearDisplay(); // clear display

 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);
 
}