/*
 *  Erik Hansen
 *  February 26, 2023
 *  Lab 3 Project
 */

// Binary Display Class
class BinaryDisplay {
  // Init values
  int _pin1, _pin2, _pin4, _pin8;

  public:
      //
      void setup(int pin1, int pin2, int pin4, int pin8) {
        pinMode(pin1, OUTPUT);
        pinMode(pin2, OUTPUT);
        pinMode(pin4, OUTPUT);
        pinMode(pin8, OUTPUT);
        _pin1 = pin1;
        _pin2 = pin2;
        _pin4 = pin4;
        _pin8 = pin8;
      }
      //
      void display(int iValue) {
        digitalWrite(_pin1, (iValue & 1) ? HIGH : LOW);
        digitalWrite(_pin2, (iValue & 2) ? HIGH : LOW);
        digitalWrite(_pin4, (iValue & 4) ? HIGH : LOW);
        digitalWrite(_pin8, (iValue & 8) ? HIGH : LOW);
      }
};

// Declaring Globals
BinaryDisplay bd;               // Binary Display
#define BUTTON_PIN 9            // Pause button
const int rgbs[] = {6,7,8};     // RGB LED pins
int Counter01 = 0;              // 1 Value Counter
int Counter16 = 0;              // 16 Value Counter
bool paused = false;            // Button state (pause/unpaused)

void setup() {
  bd.setup(5,4,3,2);                  // Green = 1, Yellow = 2, Blue = 4, Red = 8
  pinMode(rgbs[0], OUTPUT);           // Red value
  pinMode(rgbs[1], OUTPUT);           // Green value
  pinMode(rgbs[2], OUTPUT);           // Blue value
  pinMode(BUTTON_PIN, INPUT_PULLUP);  // Pause button
}

void loop() {
  // Check pause state
  if (digitalRead(BUTTON_PIN) == LOW) {
    paused = !paused;
    delay(250); // Debounce
  }

  if (!paused) {
    // Increment Counter01 each increment
    Counter01++;
    // Check if Counter01 value is greater than 16 
    if (Counter01 > 16) {
      // If greater, reset Counter01 and increment Counter16
      Counter01 = 0;
      Counter16++;
      // Check if Counter16 is greater than 3
      if (Counter16 > 3) {
        // If greater, reset Counter16
        Counter16 = 0;
      }
    }

    // Run display to display current count in binary
    bd.display(Counter01);

    // Switch case to check the current value of Counter16
    switch (Counter16) {
      case 1: // Value of 16
        analogWrite(rgbs[0], 255);
        analogWrite(rgbs[1], 0);
        analogWrite(rgbs[2], 0);
        break;
      case 2: // Value of 32
        analogWrite(rgbs[0], 0);
        analogWrite(rgbs[1], 255);
        analogWrite(rgbs[2], 0);
        break;
      case 3: // Value of 48
        analogWrite(rgbs[0], 0);
        analogWrite(rgbs[1], 0);
        analogWrite(rgbs[2], 255);
        break;
      default: // Default value (>16 and <64)
        analogWrite(rgbs[0], 0);
        analogWrite(rgbs[1], 0);
        analogWrite(rgbs[2], 0);
    }
  }
  delay(500);
}