//MUHD AFIF SYAUQIE (16DTK20F1020)
// TRAFFIC LIGHT 
// 7/3/2022

#define LED_RED 14
#define LED_YELLOW  12
#define LED_GREEN 13
#define PED_GREEN_LIGHT 15
#define PED_RED_LIGHT 2
#define BUTTON_PIN 27

//The below are variables, which can be changed
int button_state = 0;
//Variable for reading the button status

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  
  pinMode(LED_RED, OUTPUT);
  pinMode(LED_YELLOW, OUTPUT);
  pinMode(LED_GREEN, OUTPUT);
  pinMode(PED_GREEN_LIGHT, OUTPUT);
  pinMode(PED_RED_LIGHT, OUTPUT);
  pinMode(BUTTON_PIN, INPUT_PULLUP);
}


void loop(){
    changeLights();
    delay(15000);

    //read the state of the button value
    button_state = digitalRead(BUTTON_PIN);
  
  //control LED according to the state of button
    if (button_state == LOW)//if button is presssed
}
}
void changeLights(){
    // green on,
    digitalWrite(LED_GREEN, HIGH);
    delay(500);
    // green off, yellow on
    digitalWrite(LED_GREEN, LOW); // 3 second off green light
    digitalWrite(LED_YELLOW, HIGH); // yellow light on in 3s coming 
    delay(3000);
    // turn off yellow, then turn red on for 5 seconds
    digitalWrite(LED_YELLOW, LOW);
    digitalWrite(LED_RED, HIGH);
    delay(4000);
    // red and yellow on for 2 seconds (red is already on though)
    digitalWrite(LED_YELLOW, HIGH);
    delay(2000);
    // turn off red and yellow, then turn on green
    digitalWrite(LED_YELLOW, LOW);
    digitalWrite(LED_RED, LOW);
    digitalWrite(LED_GREEN, HIGH);
    delay(3000);
}