#include <LiquidCrystal.h>

// Inicializácia displeja - RS, E, D4, D5, D6, D7
LiquidCrystal lcd(13, 12, 8, 7, 4, 2);

// Definícia pinov
const int redPin = 3;
const int greenPin = 5;
const int bluePin = 6;
const int potRed = A0;
const int potGreen = A1;
const int potBlue = A2;
const int potBright = A3;

int redValue, greenValue, blueValue, brightness;

void setup() {
  pinMode(redPin, OUTPUT);
  pinMode(greenPin, OUTPUT);
  pinMode(bluePin, OUTPUT);
  lcd.begin(16, 2);
  lcd.print("RGB Controller");
  delay(500);
  lcd.clear();
}

void loop() {
  // Získanie hodnôt z potenciometrov
  redValue = map(analogRead(potRed), 0, 1023, 0, 255);
  greenValue = map(analogRead(potGreen), 0, 1023, 0, 255);
  blueValue = map(analogRead(potBlue), 0, 1023, 0, 255);
  brightness = map(analogRead(potBright), 0, 1023, 0, 10);
  
  // Nastavenie RGB LED (invertované pre common anode)
  analogWrite(redPin, 255 - redValue);
  analogWrite(greenPin, 255 - greenValue);
  analogWrite(bluePin, 255 - blueValue);
  
  // Vyčistenie displeja
  lcd.clear();
  
  // Aktualizácia displeja - prvý riadok
  lcd.setCursor(0, 0);
  lcd.print("R:");
  lcd.print(redValue);
  lcd.print(" G:");
  lcd.print(greenValue);
  lcd.print(" B:");
  lcd.print(blueValue);
  
  // Aktualizácia displeja - druhý riadok
  lcd.setCursor(0, 1);
  lcd.print("Brightness: ");
  lcd.print(brightness);
  
  delay(200); // Dlhšie oneskorenie pre stabilitu displeja
}