#if CONFIG_FREERTOS_UNICORE
static const BaseType_t app_cpu = 0;
#else
static const BaseType_t app_cpu = 1;
#endif

static const int led_pin = LED_BUILTIN;

void toggleLED(void *parameter){
  while(1){
    digitalWrite(led_pin, HIGH);
    vTaskDelay(500/ portTICK_PERIOD_MS);
    digitalWrite(led_pin, LOW);
    vTaskDelay(500/ portTICK_PERIOD_MS);
  }
}

void setup() {
  pinMode(led_pin, OUTPUT);

  xTaskCreatePinnedToCore(
    toggleLED,
    "toggle led",
    1024,
    NULL,
    1,
    NULL,
    app_cpu
  );
}

void loop() {
 //
}