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

#define LED 2 
#define LED2 4 
#define SW1 5 
#define SW2 16 
#define SW3 17 

LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 20, 4);
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  Serial.println("My name is KIttisak Jeenboonme ");
  LCD.init();
  LCD.backlight();
  LCD.setCursor(3, 0);
  LCD.print("        POND        ");
  pinMode(LED, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(SW1, INPUT_PULLUP);
  pinMode(SW2, INPUT_PULLUP);
  pinMode(SW3, INPUT_PULLUP);
 ///////////////////LED1&LED2--> OFF <-- //////////////////


  digitalWrite(LED, LOW);
  Serial.println("LED1 === OFF");
  LCD.setCursor(0, 1);
  LCD.print("LED1 === OFF ");
  digitalWrite(LED2, LOW);
  Serial.println("LED2 === OFF");
  LCD.setCursor(0, 2);
  LCD.print("LED2 === OFF ");
 ////////////////////////////////////////////////
  //LCD.clear();
    delay(2000);
}

void loop() {

  if (digitalRead(SW1) == LOW){
    function_a ();
  }
  if (digitalRead(SW2) == LOW){
    function_LED1();
  }
  if (digitalRead(SW3) == LOW){
    function_LED2();
  }

  function_off ();
  delay(100);
}

void function_a (){
  digitalWrite(LED, HIGH);
  Serial.println("LED1 === ON");
  LCD.setCursor(0, 1);
  LCD.print("LED1 === ON ");
  digitalWrite(LED2, LOW);
  Serial.println("LED2 === OFF");
  LCD.setCursor(0, 2);
  LCD.print("LED2 === OFF ");
  delay(1000);
  digitalWrite(LED, LOW);
  Serial.println("LED1 === OFF");
  LCD.setCursor(0, 1);
  LCD.print("LED1 === OFF ");
  digitalWrite(LED2, HIGH);
  Serial.println("LED2 === ON");
  LCD.setCursor(0, 2);
  LCD.print("LED2 === ON ");
  delay(1000);
}

void function_LED1(){
  digitalWrite(LED, HIGH);
  Serial.println("LED1 === ON");
  LCD.setCursor(0, 1);
  LCD.print("LED1 === ON ");
  delay(1000);
  digitalWrite(LED, LOW);
  Serial.println("LED1 === OFF");
  LCD.setCursor(0, 1);
  LCD.print("LED1 === OFF ");
  delay(1000);
}

void function_LED2 (){
  digitalWrite(LED2, LOW);
  Serial.println("LED2 === OFF");
  LCD.setCursor(0, 2);
  LCD.print("LED2 === OFF ");
  delay(1000);
  digitalWrite(LED2, HIGH);
  Serial.println("LED2 === ON");
  LCD.setCursor(0, 2);
  LCD.print("LED2 === ON ");
  delay(1000);
}

void function_off (){
 ///////////////////LED1&LED2--> OFF <-- //////////////////
  digitalWrite(LED, LOW);
  Serial.println("LED1 === OFF");
  LCD.setCursor(0, 1);
  LCD.print("LED1 === OFF ");
  digitalWrite(LED2, LOW);
  Serial.println("LED2 === OFF");
  LCD.setCursor(0, 2);
  LCD.print("LED2 === OFF ");
 ////////////////////////////////////////////////

}