#include <LiquidCrystal.h>

// Initialize the non-I2C LCD (RS, E, D4, D5, D6, D7)
LiquidCrystal lcd(13,12, 11, 10, 9, 8);

// Define analog inputs
#define POT1 A3
#define POT2 A1

// Define digital pins
#define BUTTON1 2
#define LED1 4
#define BUTTON2 3
#define BUZZER 5

volatile bool ledTriggered = false;
volatile bool buzzerTriggered = false;
unsigned long ledStartTime = 0;
unsigned long buzzerStartTime = 0;
bool ledActive = false;
bool buzzerActive = false;

void ISR1() {
    ledTriggered = true;
    ledStartTime = millis();
    ledActive = true;
}

void ISR2() {
    buzzerTriggered = true;
    buzzerStartTime = millis();
    buzzerActive = true;
}

void setup() {
    lcd.begin(16, 2);
    
    pinMode(POT1, INPUT);
    pinMode(POT2, INPUT);
    pinMode(BUTTON1, INPUT_PULLUP);
    pinMode(LED1, OUTPUT);
    pinMode(BUTTON2, INPUT_PULLUP);
    pinMode(BUZZER, OUTPUT);
    
    attachInterrupt(digitalPinToInterrupt(BUTTON1), ISR1, FALLING);
    attachInterrupt(digitalPinToInterrupt(BUTTON2), ISR2, FALLING);
}

void loop() {
    float pot1Value = analogRead(POT1) * (2.5 / 1023.0);
    int pot1Digital = analogRead(POT1);
    
    float pot2Value = analogRead(POT2) * (5.0 / 1023.0);
    int pot2Digital = analogRead(POT2);
    
    if (!ledActive && !buzzerActive) {
        lcd.setCursor(0, 0);
        lcd.print("POT1: ");
        lcd.print(pot1Value, 1);
        lcd.print("V ");
        lcd.print(pot1Digital);
        lcd.print("    ");
        
        lcd.setCursor(0, 1);
        lcd.print("POT2: ");
        lcd.print(pot2Value, 1);
        lcd.print("V ");
        lcd.print(pot2Digital);
        lcd.print("    ");
    }
    
    // Handle LED logic
    if (ledTriggered) {
        lcd.clear();
        lcd.setCursor(0, 0);
        lcd.print("LED ISR1 ON");
        lcd.setCursor(0, 1);
        lcd.print("8 Seconds");
        digitalWrite(LED1, HIGH);
        ledTriggered = false;
    }
    if (ledActive && millis() - ledStartTime >= 7000) {
        digitalWrite(LED1, LOW);
        ledActive = false;
        lcd.clear();
    }
    
    // Handle Buzzer logic
    if (buzzerTriggered) {
        lcd.clear();
        lcd.setCursor(0, 0);
        lcd.print("BZR ISR2 ON");
        lcd.setCursor(0, 1);
        lcd.print("6 Seconds");
        digitalWrite(BUZZER, HIGH);
        buzzerTriggered = false;
    }
    if (buzzerActive && millis() - buzzerStartTime >= 6000) {
        digitalWrite(BUZZER, LOW);
        buzzerActive = false;
        lcd.clear();
    }
    
    delay(500);
}