#define LED 2
#define LED2 4
#define SW1 5
#define SW2 17
#define SW3 16
#include <LiquidCrystal_I2C.h>


LiquidCrystal_I2C lcd(0x27, 20, 4);

void setup() {
  Serial.begin(115200);
  lcd.init();
  lcd.backlight();
  Serial.println("Hello, ESP32!");
  Serial.println("My name is Pollasart Thippasuwan (112)");

  pinMode(LED, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(SW1, INPUT_PULLUP);
  pinMode(SW2, INPUT_PULLUP);
  pinMode(SW3, INPUT_PULLUP);
///////////////////////////////////////////////////////////////////
  lcd.setCursor(2, 0);
  lcd.print("<<<Love You>>>");
  digitalWrite(LED, LOW);
  Serial.println("LED1--OFF ");
  lcd.setCursor(5, 1);
  lcd.print("LED1--OFF ");
  digitalWrite(LED2, LOW);
  Serial.println("LED2--OFF ");
  lcd.setCursor(5, 2);
  lcd.print("LED2--OFF ");
  ///////////////////////////////////////////////////////////////////
  delay(1000);
   
}

void loop() {
  //function_a ();
  //LED_1 ();
  //LED_2 ();
  

  if (digitalRead(SW1) == LOW){
    function_a ();
  }
  if (digitalRead(SW2) == LOW){
    LED_1 ();
  }
  if (digitalRead(SW3) == LOW){
    LED_2 ();
  }
     OFF ();
     delay(100);


}

void function_a ()
{
  digitalWrite(LED, HIGH);
  Serial.println("LED->>ON");
  lcd.setCursor(2, 0);
  lcd.print("<<<Love You>>>");
  lcd.setCursor(5, 1);
  lcd.print("LED1--ON ");
  digitalWrite(LED2, LOW);
  Serial.println("LED2->>ON");
  lcd.setCursor(5, 2);
  lcd.print("LED2--OFF ");
  delay(550);

  digitalWrite(LED, LOW);
  Serial.println("LED->>OFF");
  lcd.setCursor(5, 1);
  lcd.print("LED1--OFF ");
  digitalWrite(LED2, HIGH);
  Serial.println("LED2->>OFF");
  lcd.setCursor(5, 2);
  lcd.print("LED2--ON ");
  delay(550);
}

void LED_1 ()
{
  digitalWrite(LED, HIGH);
  Serial.println("LED->>ON");
  lcd.setCursor(2, 0);
  lcd.print("<<<Love You>>>");
  lcd.setCursor(5, 1);
  lcd.print("LED1--ON ");
  delay(550);
  digitalWrite(LED, LOW);
  Serial.println("LED->>OFF");
  lcd.setCursor(5, 1);
  lcd.print("LED1--OFF ");
  delay(550);
}

void LED_2 ()
{
  digitalWrite(LED2, LOW);
  Serial.println("LED2->>ON");
  lcd.setCursor(2, 0);
  lcd.print("<<<Love You>>>");
  lcd.setCursor(5, 2);
  lcd.print("LED2--OFF ");
  delay(550);
  digitalWrite(LED2, HIGH);
  Serial.println("LED2->>OFF");
  lcd.setCursor(5, 2);
  lcd.print("LED2--ON ");
  delay(550);

}

void OFF ()
{
///////////////////////////////////////////////////////////////////
  lcd.setCursor(2, 0);
  lcd.print("<<<Love You>>>");
  digitalWrite(LED, LOW);
  Serial.println("LED1--OFF ");
  lcd.setCursor(5, 1);
  lcd.print("LED1--OFF ");
  digitalWrite(LED2, LOW);
  Serial.println("LED2--OFF ");
  lcd.setCursor(5, 2);
  lcd.print("LED2--OFF ");
  ///////////////////////////////////////////////////////////////////


}