text: /**
   * \file
   *
   * \brief SAM External Interrupt Driver
   *
   * Copyright (C) 2012-2015 Atmel Corporation. All rights reserved.
   *
   * \asf_license_start
   *
   * \page License
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *
   * 1. Redistributions of source code must retain the above copyright notice,
   *    this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright notice,
   *    this list of conditions and the following disclaimer in the documentation
   *    and/or other materials provided with the distribution.
   *
   * 3. The name of Atmel may not be used to endorse or promote products derived
   *    from this software without specific prior written permission.
   *
   * 4. This software may only be redistributed and used in connection with an
   *    Atmel microcontroller product.
   *
   * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
   * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
   * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
   * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   * POSSIBILITY OF SUCH DAMAGE.
   *
   * \asf_license_stop
   *
   */
  /*
   * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
   */
  #ifndef EXTINT_CALLBACK_H_INCLUDED
  #define EXTINT_CALLBACK_H_INCLUDED
  
  #include <compiler.h>
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  /**
   * \addtogroup asfdoc_sam0_extint_group
   *
   * @{
   */
  
  /** \name Callback Configuration and Initialization
   * @{
   */
  
  /** Enum for the possible callback types for the EXTINT module. */
  enum extint_callback_type
  {
  	/** Callback type for when an external interrupt detects the configured
  	 *  channel criteria (i.e. edge or level detection)
  	 */
  	EXTINT_CALLBACK_TYPE_DETECT,
  };
  
  enum status_code extint_register_callback(
  	const extint_callback_t callback,
  	const uint8_t channel,
  	const enum extint_callback_type type);
  
  enum status_code extint_unregister_callback(
  	const extint_callback_t callback,
  	const uint8_t channel,
  	const enum extint_callback_type type);
  
  uint8_t extint_get_current_channel(void);
  
  /** @} */
  
  /** \name Callback Enabling and Disabling (Channel)
   * @{
   */
  
  enum status_code extint_chan_enable_callback(
  	const uint8_t channel,
  	const enum extint_callback_type type);
  
  enum status_code extint_chan_disable_callback(
  	const uint8_t channel,
  	const enum extint_callback_type type);
  
  /** @} */
  
  /** @} */
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif
  