/**
 * Copyright (c) 2015 - 2017, Nordic Semiconductor ASA
 * 
 * All rights reserved.
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 * are permitted provided that the following conditions are met:
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 *    list of conditions and the following disclaimer.
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 *    Semiconductor ASA integrated circuit in a product or a software update for
 *    such product, must reproduce the above copyright notice, this list of
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 *    materials provided with the distribution.
 * 
 * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
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 * 4. This software, with or without modification, must only be used with a
 *    Nordic Semiconductor ASA integrated circuit.
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/**
 * @cond (NODOX)
 * @defgroup app_mailbox_internal Auxiliary internal types declarations
 * @{
 * @ingroup app_mailbox
 * @internal
 *
 * @brief Module for internal usage inside the library only
 *
 * Some definitions must be included in the header file because
 * of the way the library is set up. In this way, the are accessible to the user.
 * However, any functions and variables defined here may change at any time
 * without a warning, so you should not access them directly.
 */

#ifndef APP_MAILBOX_LOCAL_H__
#define APP_MAILBOX_LOCAL_H__

#ifdef __cplusplus
extern "C" {
#endif

 /**
 * @brief Mailbox handle used for managing a mailbox queue.
 */
typedef struct
{
    uint8_t                      r_idx;    /**< Read index for the mailbox queue. */
    uint8_t                      w_idx;    /**< Write index for the mailbox queue. */
    uint8_t                      len;      /**< Number of elements currently in the mailbox queue. */
    app_mailbox_overflow_mode_t  mode;     /**< Mode of overflow handling. */
} app_mailbox_cb_t;

#ifdef __cplusplus
}
#endif

#endif // APP_MAILBOX_LOCAL_H__

/** @}
 * @endcond
 */