#include <LiquidCrystal_I2C.h>
#include <Wire.h>
LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 16, 2);

#define LED_RED_PIN 27
#define LED_GREEN_PIN 26
#define LED_BLUE_PIN 25
#define BTN1 32
#define BTN2 33
#define BTN3 34
#define BTN4 35

void red() {
  analogWrite(LED_RED_PIN, 255);
  analogWrite(LED_GREEN_PIN, 0);
  analogWrite(LED_BLUE_PIN, 0);
  Serial.println("red");
}

void green() {
  analogWrite(LED_RED_PIN, 0);
  analogWrite(LED_GREEN_PIN, 255);
  analogWrite(LED_BLUE_PIN, 0);
  Serial.println("green");
}

void blue() {
  analogWrite(LED_RED_PIN, 0);
  analogWrite(LED_GREEN_PIN, 0);
  analogWrite(LED_BLUE_PIN, 255);
  Serial.println("blue");
}

void yellow() {
  analogWrite(LED_RED_PIN, 255);
  analogWrite(LED_GREEN_PIN,255);
  analogWrite(LED_BLUE_PIN,0 );
  Serial.println("yellow");
}

void apagaTudo() {
  analogWrite(LED_RED_PIN, 0);
  analogWrite(LED_GREEN_PIN,0);
  analogWrite(LED_BLUE_PIN,0);
  Serial.println("tudo apagado");
}

void lcd_apagarLinha(uint8_t linha) {
  // Define a posição do cursor na linha especificada
  LCD.setCursor(0, linha);

 
  LCD.print("              ");
}


void setup() {
 
  Wire.begin(22, 23);
  LCD.init();
  LCD.backlight();
  LCD.setCursor(0, 0);
   LCD.init();
  LCD.backlight();
  LCD.print("G.Led RGB Fimac");
  pinMode(LED_RED_PIN, OUTPUT);
  pinMode(LED_GREEN_PIN, OUTPUT);
  pinMode(LED_BLUE_PIN, OUTPUT);
  pinMode(BTN1, INPUT);
  pinMode(BTN2, INPUT);
  pinMode(BTN3, INPUT);
  pinMode(BTN4, INPUT);

  
}

void loop() {



  if (digitalRead(BTN1) == HIGH) {
  red();
   lcd_apagarLinha(1);
  LCD.setCursor(4,1);
  LCD.print("Red");
  
 }
  if (digitalRead(BTN2) == HIGH){
   green();
    lcd_apagarLinha(1);
     LCD.setCursor(4,1);
     LCD.print("green");
 }
  if (digitalRead(BTN3) == HIGH){
   blue();
    lcd_apagarLinha(1);
     LCD.setCursor(4,1);
     LCD.print("Blue");
 }
 if (digitalRead(BTN4) == HIGH){
   yellow();
    lcd_apagarLinha(1);
     LCD.setCursor(4,1);
     LCD.print("yellow");
 }
 
}