#include <stdio.h>
#include <freertos/FreeRTOS.h>
#include <driver/gpio.h>

const gpio_num_t LED_PIN = 13;

static void led_task(void* arg) {
  bool led_state = 0;
  
  gpio_config_t io_conf = {
    .pin_bit_mask = 1ULL << LED_PIN,
    .mode = GPIO_MODE_OUTPUT,
  };
  gpio_config(&io_conf);

  while (1) {
    gpio_set_level(LED_PIN, led_state);
    led_state = !led_state;
    vTaskDelay(pdMS_TO_TICKS(1000));
  }
}

void app_main() {  // 主程式入口
  xTaskCreate( led_task, "blink LED", 2048, NULL, 1, NULL );  // 建立並執行任務
}