#include <LiquidCrystal.h>
LiquidCrystal lcd(18, 5, 17, 16, 4, 0);
int ledPin = 14;
int buzzer = 26;
int count1 = 0;
int count2 = 0;
bool ledstate = false;
bool buzzerstate = false;
void setup() {
  Serial.begin(115200);
  Serial.println("Hello");
  pinMode(ledPin, OUTPUT);
  pinMode(buzzer, OUTPUT);
  lcd.begin(20, 4);
}
void loop() {}
void serialEvent() {
  while (Serial.available()) {
    char ch = Serial.read();

    Serial.print(ch);
    switch (ch)
    {
      case '1':

        ledstate = !ledstate;
        if (ledstate)
        {
          digitalWrite(ledPin, HIGH);
          Serial.println("led on");
          lcd.setCursor(0, 0);
          lcd.print("led on");
        }
        else
        {
          digitalWrite(ledPin, LOW);
          Serial.println("led off");
          lcd.setCursor(0, 0);
          lcd.print("led off");

        }
        break;
      case '2':
        buzzerstate = !buzzerstate;
        if (buzzerstate)
        {
          digitalWrite(buzzer, HIGH);
          Serial.println("buzzer on");
          lcd.setCursor(0, 1);
          lcd.print("buzzer on");
        }
        else
        {
          digitalWrite(buzzer, LOW);
          Serial.println("buzzer off");
          lcd.setCursor(0, 1);
          lcd.print("buzzer off");

        }
        break;



      case '3':
        lcd.clear();
        break;
      case '4':
        count1++;
        lcd.setCursor(0, 2);
        lcd.print("count 1:");
        lcd.print(count1);
        break;
      case '5':
        count2++;
        lcd.setCursor(0, 2);
        lcd.print("count 2:");
        lcd.print(count2);
        break;








    }
  }
}