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

// LCDs
LiquidCrystal_I2C lcd1(0x27, 16, 2);

// LEDs
const int redLED = 2;
const int yellowLED = 3;
const int greenLED = 4;
const int pedRedLED = 5;
const int pedGreenLED = 6;
const int pirPin = 7;

// Push button
const int pushButton = 8; // Connect push button to this pin

bool buttonPressedBefore = false;
bool pirState = digitalRead(pirPin);

void setup() {
 // Initialize the LCDs and the LEDs
 lcd1.init();
 lcd1.backlight();

 pinMode(redLED, OUTPUT);
 pinMode(yellowLED, OUTPUT);
 pinMode(greenLED, OUTPUT);
 pinMode(pedRedLED, OUTPUT);
 pinMode(pedGreenLED, OUTPUT);

 pinMode(pushButton, INPUT);
 pinMode(pirPin, INPUT);

 // Initial state
 digitalWrite(pedRedLED, HIGH); // Red LED initially on
 digitalWrite(pedGreenLED, LOW);
 digitalWrite(redLED, LOW);
 digitalWrite(yellowLED, LOW);
 digitalWrite(greenLED, HIGH);
 lcd1.setCursor(5, 0);
 lcd1.print("Car Go!");
}

void loop() {

 digitalWrite(pedRedLED, HIGH); 
 digitalWrite(pedGreenLED, LOW);
 digitalWrite(redLED, LOW);
 digitalWrite(yellowLED, LOW);
 digitalWrite(greenLED, HIGH);
 lcd1.setCursor(5, 0);
 lcd1.print("Car Go!");

 // Check if the push button is pressed
 if (digitalRead(pushButton) == HIGH || pirState == HIGH) {
   // Push button pressed
   buttonPressedBefore = true;
   delay(3000);
   lcd1.setCursor(1, 0);
   lcd1.print("Ready to stop");
   delay(3000);
   digitalWrite(redLED, LOW);
   digitalWrite(yellowLED, HIGH);
   digitalWrite(greenLED, LOW);
   delay(3000);
   lcd1.setCursor(5, 0);
   lcd1.print("STOP");
   digitalWrite(redLED, HIGH);
   digitalWrite(yellowLED, LOW);
   digitalWrite(greenLED, LOW);
   lcd1.clear();
   lcd1.setCursor(0, 0);
   lcd1.print(" Pedestrian Walk");
   digitalWrite(pedGreenLED, HIGH);
   digitalWrite(pedRedLED, LOW);
   
   delay (10000);

   digitalWrite(pedRedLED, HIGH);
   digitalWrite(pedGreenLED, LOW);

   lcd1.clear();
 } else if (digitalRead(pushButton) == LOW) {
   buttonPressedBefore = false;
 }
}