// Library for OLED DIsplay
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define SCREEN_WIDTH 128 // OLED width,  in pixels
#define SCREEN_HEIGHT 64 // OLED height, in pixels

// create an OLED display object connected to I2C
Adafruit_SSD1306 oled(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

// Contoh Code Button dan LED
int ledPin_1 = 15;        // Pin LED
int ledPin_2 = 4;
int pushButton_1 = 14;     // Pin Button
int pushButton_2 = 12;     // Pin Button
int state_btn_1 = 0;      // Status btn ( Boolean ) 
int state_btn_2 = 0;      // Status btn ( Boolean ) 


void setup() {
//Serial.begin(115200);
pinMode(ledPin_1, OUTPUT);
pinMode(pushButton_1, INPUT);
pinMode(ledPin_2, OUTPUT);
pinMode(pushButton_2, INPUT);

 // initialize OLED display with I2C address 0x3C
  if (!oled.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("failed to start SSD1306 OLED"));
    while (1);
  }

  delay(2000);         // wait two seconds for initializing
  oled.clearDisplay(); // clear display

  oled.setTextSize(1);         // set text size
  oled.setTextColor(WHITE);    // set text color
  oled.setCursor(0, 2);       // set position to display (x,y)
  oled.println("If Condition:"); // set text 
  oled.display();              // display on OLED 
}

void loop() {
oled.setTextSize(1.5);        
oled.setTextColor(WHITE);   
oled.setCursor(0, 12);

state_btn_1 = digitalRead(pushButton_1);
state_btn_2 = digitalRead(pushButton_2);

if (state_btn_1 == HIGH && state_btn_2 == LOW){
  digitalWrite(ledPin_1, HIGH);
  //Serial.println(" LED 1 MENYALA ");
  oled.println("LED 1 MENYALA");
}  
if ( state_btn_2 == HIGH && state_btn_1 == LOW){
  digitalWrite(ledPin_2, HIGH);
  //Serial.println(" LED 2 MENYALA ");
  oled.println(" LED 2 MENYALA ");
} else {
  digitalWrite(ledPin_1, LOW);
  digitalWrite(ledPin_2, LOW);
  oled.println(" SEMUA LED MATI ");
}

oled.display();
delay(1000);
oled.clearDisplay();
}