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

#define OLED_RESET -1 
#define SCREEN_ADDRESS 0x3C
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

int button = 11;
int button2 = 10;
int serialMode = 0;
int serialMode2 = 0;

Adafruit_SSD1306 oled(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

void setup() {
  pinMode(button, INPUT);


    Serial.begin(9600);


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

  delay(1000);         
  oled.clearDisplay(); 

  oled.setTextSize(1);        
  oled.setTextColor(WHITE);   
  oled.setCursor(30, 20);      
  oled.println("Hello World"); 
  oled.display();             
}


void loop() {

  serialMode = digitalRead(button);
  serialMode2 = digitalRead(button2);
  
  if(serialMode == 1){
    oled.setTextSize(3);         
    oled.setTextColor(WHITE);    
    oled.setCursor(18, 23);       
    oled.println("MSG"); // 
    oled.display();
  } else if (serialMode2 == 1){
    oled.setTextSize(3);         
    oled.setTextColor(WHITE);    
    oled.setCursor(18, 23);     
    oled.println("MSG"); // 
    oled.display();
  } else {
    oled.setTextSize(3);       
    oled.setTextColor(WHITE);    
    oled.setCursor(18, 23);       
    oled.println("MSG"); // 
    oled.display();
  }
  oled.clearDisplay();


}