#include <Arduino_FreeRTOS.h>
//Variables first 3 LEDs!
int led_rojo = 8;      //Red LED
int led_verde = 9;      //Yellow LED
int emergencia = 10;     //White LED
#define sensor_i A0
#define sensor_s A1
#define reset A2

int cantidad_de_lugares = 4

void setup() {
  Serial.begin(9600);
  //LEDs' initialization!
  pinMode(led_rojo, OUTPUT);
  pinMode(led_verde, OUTPUT);
  pinMode(emergencia, OUTPUT);
  pinMode(sensor_i, INPUT_PULLUP);
  pinMode(sensor_s, INPUT_PULLUP);
  pinMode(reset, INPUT_PULLUP);

  //'Neutral_Task' - the task-free function!
  xTaskCreate(Task_Ent, "Task no. 1!", 100, NULL, 1, NULL);
  xTaskCreate(Task_Sal, "Task no.  2!", 100, NULL, 2, NULL);
  xTaskCreate(Task_Res, "Task no.  3!", 100, NULL, 3, NULL);
}

//The following function is Task1. We display the task label on Serial monitor.
static void Task_Ent(void* pvParameters) {
  while (1) {
    if (digitalRead(reset) = LOW) {
      digitalWrite(emerercia, HIGH);
      cantidad_de_lugares = 4
    digitalWrite(led_verde, HIGH);
    digitalWrite(led_rojo, LOW);
    digitalWrite(emergencia, LOW);
    Serial.println(("reset on, lugares reiniciados"));
    delay(500);
    vTaskDelay(1000 / portTICK_PERIOD_MS);
  }
}

//Task 2
static void Task_2(void* pvParameters) {
  while (1) {
    if (digitalRead(sensor_i) == LOW && cantidad_de_lugares > 0) {
      catidad_de_lugares
    digitalWrite(led_verde, LOW);
    digitalWrite(led_rojo, HIGH);
    digitalWrite(emergencia, LOW);
    Serial.println(F("Task no. 2!"));
    vTaskDelay(1100 / portTICK_PERIOD_MS);
  }
}

//Task 3
static void Task_3(void* pvParameters) {
  while (1) {
    digitalWrite(LED1, LOW);
    digitalWrite(LED2, LOW);
    digitalWrite(LED3, HIGH);
    digitalWrite(extender, LOW);
    tone(buzzer, 400, 1200 / portTICK_PERIOD_MS);
    Serial.println(F("Task no. 3!"));
    vTaskDelay(1200 / portTICK_PERIOD_MS);
  }
}

//Task 4 (the last one)!
//This is an extension which can be task-free!
static void Neutral_Task(void* pvParameters) {
  while (1) {
    digitalWrite(LED1, LOW);
    digitalWrite(LED2, LOW);
    digitalWrite(LED3, LOW);
    digitalWrite(extender, HIGH);
    tone(buzzer, 500, 1300);
    Serial.println(F("Neutral_Task"));
    delay(1300);
  }
}

//We don't need to use "loop" function here!
void loop() {}