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


const int SCREEN_WIDTH = 128; // OLED display width, in pixels
const int SCREEN_HEIGHT = 64; // OLED display height, in pixels

//Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

int led1=13;
int led2=12;
int led3=11;
int pushButton1 = 2;
int pushButton2 = 3;
int pushButton3 = 4;
void setup() {
  Serial.begin(9600);

  pinMode(pushButton1, INPUT);
  pinMode(pushButton2, INPUT);
  pinMode(pushButton3, INPUT);
  pinMode(led1,OUTPUT);
  pinMode(led2,OUTPUT);
  pinMode(led3,OUTPUT);
  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address 0x3D for 128x64
    Serial.println(F("SSD1306 allocation failed"));
    while(true);
  }
  display.clearDisplay();
display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(25, 10);
display.println("A.SATHA SATHID ");

display.setTextColor(WHITE);
display.setCursor(28, 30);
display.println("SE.2/99 NO.99 ");
display.display();
delay(3000);
}

void loop() {
  int buttonState1 = digitalRead(pushButton1);
  int buttonState2 = digitalRead(pushButton2);
  int buttonState3 = digitalRead(pushButton3);
  Serial.println(buttonState1);
  Serial.println(buttonState2);
  Serial.println(buttonState3);

display.clearDisplay();
display.setTextSize(1);
display.setTextColor(WHITE);

display.setCursor(0, 0);
display.println("buttonState1 = ");
display.setCursor(90, 0);
display.println(buttonState1);
display.setCursor(0, 10);
display.println("buttonState2 = ");
display.setCursor(90, 10);
display.println(buttonState2);
display.setCursor(0, 20);
display.println("buttonState3 = ");
display.setCursor(90, 20);
display.println(buttonState3);


if(buttonState1==1){
 
  display.setTextSize(2);
display.setTextColor(WHITE);
display.setCursor(20, 40);
display.println("LED1:ON");
digitalWrite(led1,1);
display.display();

}
else if(buttonState2==1){
  
  display.setTextSize(2);
display.setTextColor(WHITE);
display.setCursor(20, 40);
display.println("LED2:ON");
digitalWrite(led2,1);
display.display();
}
else if(buttonState3==1){

  display.setTextSize(2);
display.setTextColor(WHITE);
display.setCursor(20, 40);
display.println("LED3:ON");
digitalWrite(led3,1);
display.display();
}
else {
  digitalWrite(led1,0);
  digitalWrite(led2,0);
  digitalWrite(led3,0);
display.setTextSize(2);
display.setTextColor(WHITE);
display.setCursor(20, 40);
display.println("LED:OFF");
display.display();
}
}