Controll LED With Button and Show on LCD

led-controller.ino

#include <LiquidCrystal.h>

// lcd pin config
LiquidCrystal lcd(2, 3, 4, 5, 6, 7);
int selected = -1;
int high = 0;
String colors[] = {"Red", "Green", "Blue"};

void setup()
{
    lcd.begin(16, 2);
    lcd.clear();
    lcd.print("Configuring");
    
    // button pin config
    pinMode(10, INPUT);
    pinMode(11, INPUT);
    pinMode(12, INPUT);
    
    // Common Anode RGB led pin config
    pinMode(A0, OUTPUT);
    pinMode(A1, OUTPUT);
    pinMode(A2, OUTPUT);
    
    // initialize the button
    digitalWrite(10, HIGH);
    digitalWrite(11, HIGH);
    digitalWrite(12, HIGH);
  
    // off led
    analogWrite(A0, 255);
    analogWrite(A1, 200);
    analogWrite(A2, 255);
    delay(1000);
    lcd.clear();
    lcd.print("Ready");
    delay(1000);
    lcd.clear();
    lcd.print("Select Colors");
}

// function to clear line
void ceol(byte line)
{
    lcd.setCursor(0, line);
    lcd.print("                ");
    lcd.setCursor(0, line);
}

void loop()
{
    ceol(1);
    if (selected == -1)
    {
        lcd.print("Current : None");
        analogWrite(A0, 255);
        analogWrite(A1, 200);
        analogWrite(A2, 255);
    }
    else
    {
        lcd.print("Current : " + colors[selected]);
    }

    // buttons
    bool left = digitalRead(10) == LOW;
    bool rght = digitalRead(12) == LOW;
    bool reset = digitalRead(11) == LOW;
    
    if (left || rght || reset)
    {
        if (left)
        {
            selected--;
            selected = selected < 0 ? 2 : selected;
        }
        if (rght)
        {
            selected++;
            selected = selected > 2 ? 0 : selected;
        }
        if (reset)
        {
            selected = -1;
        }
        if (selected > -1)
        {
            ceol(1);
            lcd.print("Current : " + colors[high]);
        }

        switch (selected)
        {
        case 0:
            analogWrite(A0, 0);
            analogWrite(A1, 255);
            analogWrite(A2, 255);
            break;
        case 1:
            analogWrite(A0, 255);
            analogWrite(A1, 0);
            analogWrite(A2, 255);
            break;
        case 2:
            analogWrite(A0, 255);
            analogWrite(A1, 255);
            analogWrite(A2, 0);
            break;
        }
    }
    delay(100);
}