Crosswalk Arduino

crosswalk.ino

#include <Servo.h>

// Power pin is normally OFF
// Walk pin is normall ON

int walkPin = 2;
int powerPin = 3;
int togglePin = 3;

int bellPin = 12;
int redLightPin = 13;
int greenLightPin = 11;
int yellowLightPin = 10;

int redButtonPin = 5;
int yellowButtonPin = 6;
int greenButtonPin = 7;

long mills = 0;
int countdownTimeLeft = 0;
int buzzerPin = 4;
bool ignition = false;

unsigned long buzzerMillisLeft = 0;
int buzzerToggle = false;

int programmingPin = 9;
int ignitionPin =8;
bool toggle = false;

bool buttonPressed = false;
String buttonPresses = "";
String combination = "ggrryygg";

void setup() {
  // put your setup code here, to run once:
  pinMode(ignitionPin, INPUT_PULLUP);
  pinMode(programmingPin, INPUT_PULLUP);
  pinMode(walkPin, OUTPUT);
  pinMode(powerPin, OUTPUT);
  pinMode(togglePin, OUTPUT);
  pinMode(buzzerPin, OUTPUT);
  
  pinMode(redLightPin, OUTPUT);
  pinMode(yellowLightPin, OUTPUT);
  pinMode(greenLightPin, OUTPUT);
  pinMode(bellPin, OUTPUT);

  pinMode(redButtonPin, INPUT_PULLUP);
  pinMode(yellowButtonPin, INPUT_PULLUP);
  pinMode(greenButtonPin, INPUT_PULLUP);
  
  digitalWrite(powerPin, LOW);
  digitalWrite(walkPin, HIGH);

  digitalWrite(redLightPin, HIGH);
  digitalWrite(yellowLightPin, HIGH);
  digitalWrite(greenLightPin, HIGH);
  digitalWrite(bellPin, HIGH);

  //SET UP THE TIMER
  OCR0A = 0xAF;
  TIMSK0 |= _BV(OCIE0A);
  
  //delay(3000);
  //countdownFrom(20);
  //  delay(24000);
}

void countdownFrom(int timeLeft){
  countdownTimeLeft = timeLeft + 2; 
}

SIGNAL(TIMER0_COMPA_vect){
  unsigned long currentMillis = millis();
  mills++;
  if (buzzerMillisLeft > 0) {
    buzzerMillisLeft--;
    buzzerToggle = !buzzerToggle;
    digitalWrite(buzzerPin, buzzerToggle);
  }
  
  if (mills > 500){
    //buzzer(100);
    mills = 0;
    toggle = !toggle;
    bool countingDown = (countdownTimeLeft > 0);
    if (toggle) {
      countdownTimeLeft--;
    }
    if (countingDown) {
      digitalWrite(walkPin, LOW);
      if (countdownTimeLeft > 1){
        digitalWrite(powerPin, toggle);
      } else {
        digitalWrite(powerPin, LOW);   
      }
    } else {
      digitalWrite(walkPin, HIGH);
      digitalWrite(powerPin, LOW);
    }


  }

  if (digitalRead(programmingPin)) {
    ;
  }

  if (!digitalRead(ignitionPin)) {
    //buzzer(100);
    //countdownFrom(20);
  }
}

void countdown(int seconds){
  digitalWrite(powerPin, HIGH); // Turn off power
  digitalWrite(walkPin, LOW); // Set to hand signal
  for (int i = 0; i < seconds; i++) {
      delay(300);
      digitalWrite(powerPin, LOW);
      delay(700);
      digitalWrite(powerPin, HIGH);
  }
  delay(250);
  digitalWrite(powerPin, LOW); // ENABLE CURRENT TO FLOW
    digitalWrite(walkPin, HIGH);
  //delay(1000);

}

void buzzer (unsigned long milli){
  buzzerMillisLeft = milli;
/*  buzzerMillisLeft = 10;
  for (long i = 0; i++; i < buzzerMillisLeft){
     delay(2);
       digitalWrite(buzzerPin, HIGH);
     delay(2); 
       digitalWrite(buzzerPin, LOW);
  }*/

}

void checkCombo() {
  Serial.print(buttonPresses);
  bool success = (buttonPresses == combination);
  if (success){
          countdownTimeLeft = 0;
      digitalWrite(bellPin, LOW);
      buzzer(5000);
      delay(1200);
      digitalWrite(bellPin, HIGH);

      delay(5000);
  } else {
    buzzer(100);
    delay(200);
    buzzer(100);
    delay(200);
    buzzer(200);
    delay(300);
  }
  buttonPresses = "";

}

void registerPress(char pressedButtonChar){
  if (buttonPressed){
    return;
  }
  buttonPressed = true;
  buttonPresses = buttonPresses + pressedButtonChar;
  if (buttonPresses.length() >= 8){
    checkCombo();
  }
}

void checkInputs(){
  ignition = digitalRead(ignitionPin);
  if (!digitalRead(redButtonPin)){
    delay(100); // debounce
    if (!digitalRead(redButtonPin)) {

      digitalWrite(redLightPin, LOW);
            registerPress('r');
    }
  } else if (!digitalRead(yellowButtonPin)){
    delay(100);
    if (!digitalRead(yellowButtonPin)){
      digitalWrite(yellowLightPin, LOW);
      registerPress('y');
    }
  } else if (!digitalRead(greenButtonPin)){
    delay(100);
    if (!digitalRead(greenButtonPin)){

      digitalWrite(greenLightPin, LOW);
            registerPress('g');
    }
  } else {
    if (buttonPressed) {
      buzzer(200);
      delay(300);
      buttonPressed = false;   
    }

  }

  digitalWrite(redLightPin, digitalRead(redButtonPin));
  digitalWrite(yellowLightPin, digitalRead(yellowButtonPin));
  digitalWrite(greenLightPin, digitalRead(greenButtonPin));

}

void cycleLights(){
  digitalWrite(yellowLightPin, LOW);
  delay(700);
  digitalWrite(yellowLightPin, HIGH);
  digitalWrite(redLightPin, LOW);
  delay(700);
  digitalWrite(redLightPin, HIGH);
  digitalWrite(greenLightPin, LOW);
  delay(700);
  digitalWrite(greenLightPin, HIGH);
}

void loop() {
  /*if (countdownTimeLeft > 0) {
      checkInputs();   
  }*/
  ignition = digitalRead(ignitionPin);
  if (ignition){
          digitalWrite(bellPin, HIGH);
  } else {
      digitalWrite(bellPin, LOW);
    
  }
  //cycleLights();

  //countdown(20);
}