text: // Copyright 2021 Espressif Systems (Shanghai) CO LTD
  //
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  
  //     http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License
  
  #pragma once
  
  #include "esp_netif.h"
  #include "esp_netif_types.h"
  #include "esp_openthread.h"
  #include "openthread/instance.h"
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  /**
   * @brief   Initializes the border router features of OpenThread.
   *
   * @note Calling this function will make the device behave as an OpenThread
   *       border router. Kconfig option CONFIG_OPENTHREAD_BORDER_ROUTER is required.
   *
   * @param[in]  backbone_netif   The backbone network interface (WiFi or ethernet)
   *
   * @return
   *      - ESP_OK on success
   *      - ESP_ERR_NOT_SUPPORTED if feature not supported
   *      - ESP_ERR_INVALID_STATE if already initialized
   *      - ESP_FIAL on other failures
   *
   */
  esp_err_t esp_openthread_border_router_init(esp_netif_t *backbone_netif);
  
  /**
   * @brief   Deinitializes the border router features of OpenThread.
   *
   * @return
   *      - ESP_OK on success
   *      - ESP_ERR_INVALID_STATE if not initialized
   *      - ESP_FIAL on other failures
   *
   */
  esp_err_t esp_openthread_border_router_deinit(void);
  
  /**
   * @brief   Gets the backbone interface of OpenThread border router.
   *
   * @return
   *      The backbone interface or NULL if border router not initialized.
   *
   */
  esp_netif_t *esp_openthread_get_backbone_netif(void);
  
  #ifdef __cplusplus
  }
  #endif
  