#include <LiquidCrystal_I2C.h>
#define I2C_ADDR 0x27
#define LCD_COLUMNS 16
#define LCD_LINES 2
LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

int botao = 2;
int led_verm = 4;
int led_azul = 5;
int led_amar = 6;

uint32_t inicio_press = 0;
uint32_t fim_press = 0;
uint32_t tempo_press = 0;

void setup() {


  // put your setup code here, to run once:
pinMode(2, INPUT);
pinMode(4, OUTPUT);
pinMode(5, OUTPUT);
pinMode(6, OUTPUT);
lcd.init();
lcd.backlight();
lcd.setCursor(2,0);
lcd.print("ACIONAMENTO");
lcd.setCursor(3,1);
lcd.print("SEQUENCIAL");
delay(3000);
lcd.clear();


}

void loop() {
  if(digitalRead(botao)==LOW)
  lcd.setCursor(2,0);
  lcd.print("PRECIONE");
  lcd.setCursor(3,1);
  lcd.print("O BOTAO");

if(digitalRead(botao) == HIGH){
  lcd.clear();
  inicio_press = millis();
    while(digitalRead(botao) == HIGH){
    lcd.setCursor(0,0);
    lcd.print(tempo_press);
    lcd.setCursor(4,0);
    lcd.print("segundos");
    
    if(digitalRead(botao) == LOW){
    lcd.setCursor(0,0);
    lcd.print(fim_press);
    lcd.setCursor(3,0);
    lcd.print("0 segundos");

      fim_press = millis();
      tempo_press = fim_press - inicio_press;
      
    }
        if(tempo_press > 1000){
          digitalWrite(led_verm, HIGH);
        }
          if(tempo_press > 2000){
            digitalWrite(led_azul, HIGH);
          }
            if(tempo_press > 3000){
              digitalWrite(led_amar, HIGH);
            }
  }
}

if(digitalRead(botao) == LOW){
  digitalWrite(led_verm, LOW);
  digitalWrite(led_azul, LOW);
  digitalWrite(led_amar, LOW);
}

}