// Source          :: Lab3
// Description     :: Lab03 - Counting in Binary
// Programmed by   :: Douglas Vieira Ferreira / 03-10-2024 

/*
Display binary values using a set of 4 LEDs and integrate additional features such as a tri-color LED display, 
a pause button, and a temperature sensor to adjust the operation dynamically. 
*/

const int PAUSE_BUTTON_PIN = 8; // pause button pin
const int TEMP_SENSOR_PIN = A0; // temperature sensor pin

// Define pins for the tri-color LED
const int RED_PIN = 5; // LED connected to digital pin 5
const int GREEN_PIN = 6; // LED connected to digital pin 6
const int BLUE_PIN = 7; // LED connected to digital pin 7

class BinaryDisplay {
public:
    int pins[4]; 

    void setup(int pin1, int pin2, int pin4, int pin8) {
        pins[0] = pin1;
        pins[1] = pin2;
        pins[2] = pin4;
        pins[3] = pin8;
        for (int i = 0; i < 4; i++) {
            pinMode(pins[i], OUTPUT);
        }
    }

    void display(int iValue) {
        for (int i = 0; i < 4; i++) {
            digitalWrite(pins[i], iValue & (1 << i) ? HIGH : LOW);
        }
    }
};

BinaryDisplay binary;
int Counter01 = 0;
int Counter16 = 0;

void setup() {
    Serial.begin(9600);
    binary.setup(10, 11, 12, 13); // Initialize BinaryDisplay with LED pins
    
    pinMode(PAUSE_BUTTON_PIN, INPUT_PULLUP); // Setup for the PAUSE button
    pinMode(RED_PIN, OUTPUT);
    pinMode(GREEN_PIN, OUTPUT);
    pinMode(BLUE_PIN, OUTPUT);
    pinMode(TEMP_SENSOR_PIN, INPUT); // Setup for the temperature sensor
}

void loop() {
    if (digitalRead(PAUSE_BUTTON_PIN) == HIGH) {
        int tempValue = analogRead(TEMP_SENSOR_PIN);
        int delta = (tempValue / 1023.0) * 100; 
        
        Counter01++;
        if (Counter01 > 16) {
            Counter01 = 0;
            Counter16++;
            if (Counter16 > 3) Counter16 = 0;
        }
        binary.display(Counter01);

        // Reset tri-color LED
        digitalWrite(RED_PIN, LOW);
        digitalWrite(GREEN_PIN, LOW);
        digitalWrite(BLUE_PIN, LOW);

        // Light up tri-color LED based on Counter16
        switch (Counter16) {  
            case 1:
                Serial.print("CASE 1 - DEBUG:");
                Serial.println(Counter16); 
                digitalWrite(RED_PIN, HIGH);
                break;
            case 2:
                Serial.print("CASE 2 - DEBUG:");
                Serial.println(Counter16); 
                digitalWrite(GREEN_PIN, HIGH);
                break;
            case 3:
                Serial.print("CASE 3 - DEBUG:");
                Serial.println(Counter16); 
                digitalWrite(BLUE_PIN, HIGH);
                break;
        }
        delay(350 - delta); 
        
    }
}