#define LED1 26
#define LED2 25

#include <Button.h>
#include <Wire.h> 
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,20,4);  //địa chỉ I2C 0x27, LCD 20x4
Button BTN1(2); // Connect your button between pin 2 and GND
Button BTN2(15); // Connect your button between pin 3 and GND

void setup() {
  Serial.begin(115200);
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
	BTN1.begin();
	BTN2.begin();

  lcd.init();
  lcd.init();
  lcd.backlight();
  lcd.setCursor(3,0);
  lcd.print("THUC HANH BAI 3");
  lcd.setCursor(0,1);
  lcd.print("LED1: ");
  lcd.setCursor(0,2);
  lcd.print("LED2: ");

  Serial.println("THUC HANH BAI 3");
}

void loop() {
  if (BTN1.pressed()){
        Serial.println("Button 1 pressed");
        digitalWrite(LED1, !digitalRead(LED1));
        lcd.setCursor(6,1);
        lcd.print(digitalRead(LED1));
  }

  if (BTN2.pressed()){
        Serial.println("Button 2 pressed");
        digitalWrite(LED2, !digitalRead(LED2));
        lcd.setCursor(6,2);
        lcd.print(digitalRead(LED2));
  }

  if (Serial.available() > 0) {
    int incomingByte = Serial.read();
    switch(incomingByte){
      case '1':
        digitalWrite(LED1, !digitalRead(LED1));
        lcd.setCursor(6,1);
        lcd.print(digitalRead(LED1));
      break;
      case '2':
        digitalWrite(LED2, !digitalRead(LED2));
        lcd.setCursor(6,2);
        lcd.print(digitalRead(LED2));
      break;
      default:
      break;
    }
  }



}