#include <LiquidCrystal.h>
LiquidCrystal lcd(25, 26, 27, 14, 12, 13);
int buzzerpin = 18;
byte ledPin1 = 19;
int count = 0;
boolean buzzerstate = false;
boolean ledstate = false;
void setup() {
  Serial.begin(115200);
  Serial.println("Hello");
  lcd.begin(16, 2);
  pinMode(buzzerpin, OUTPUT);
  pinMode(ledPin1, OUTPUT);

}
void loop() {}
void serialEvent() {
  while (Serial.available()) {
    char ch = Serial.read();
    Serial.print(ch);
    if (ch == '1') {
      ledstate = !ledstate;
      if (ledstate) {
        digitalWrite(ledPin1, HIGH);
        for (int i = 0 ; i < 16; i++)
        {
          lcd.setCursor(i, 0);
          lcd.print(" ");
        }
        lcd.setCursor(0, 0);
        lcd.print("LED state:LEDON");
      }
      else {
        digitalWrite(ledPin1, LOW);
        for (int i = 0 ; i < 16; i++)
        {
          lcd.setCursor(i, 0);
          lcd.print(" ");
        }
        lcd.setCursor(0, 0);
        lcd.print("LED state:LEDOFF");
      }
    }
    else if (ch == '2') {
      buzzerstate = !buzzerstate;
      if (buzzerstate) {
        digitalWrite(buzzerpin, HIGH);
        for (int i = 0 ; i < 16; i++)
        {
          lcd.setCursor(i, 1);
          lcd.print(" ");
        }
        lcd.setCursor(0, 1);
        lcd.print("buzzstate:buzzON");
      }
      else {
        digitalWrite(buzzerpin, LOW);
        for (int i = 0 ; i < 16; i++)
        {
          lcd.setCursor(i, 1);
          lcd.print(" ");
        }
        lcd.setCursor(0, 1);
        lcd.print("buzzstate:buzzOFF");
      }
    }
  }
}