text: /**
   * Copyright (c) 2017 - 2019, Nordic Semiconductor ASA
   *
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without modification,
   * are permitted provided that the following conditions are met:
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   *    Semiconductor ASA integrated circuit in a product or a software update for
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   *
   * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
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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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   */
  
  /**@file
   *
   * @defgroup nrf_sdh_ble BLE support in SoftDevice Handler
   * @{
   * @ingroup  nrf_sdh
   * @brief    This file contains the declarations of types and functions required for BLE stack
   * support.
   */
  
  #ifndef NRF_SDH_BLE_H__
  #define NRF_SDH_BLE_H__
  
  #include "app_util.h"
  #include "ble.h"
  #include "nrf_section_iter.h"
  #include "sdk_config.h"
  #include "sdk_errors.h"
  
  #include <stdint.h>
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  /** @brief  Size of the buffer for a BLE event. */
  #define NRF_SDH_BLE_EVT_BUF_SIZE BLE_EVT_LEN_MAX(NRF_SDH_BLE_GATT_MAX_MTU_SIZE)
  
  
  #if !(defined(__LINT__))
  /**@brief   Macro for registering @ref nrf_sdh_soc_evt_observer_t. Modules that want to be
   *          notified about SoC events must register the handler using this macro.
   *
   * @details This macro places the observer in a section named "sdh_soc_observers".
   *
   * @param[in]   _name       Observer name.
   * @param[in]   _prio       Priority of the observer event handler.
   *                          The smaller the number, the higher the priority.
   * @param[in]   _handler    BLE event handler.
   * @param[in]   _context    Parameter to the event handler.
   * @hideinitializer
   */
  #define NRF_SDH_BLE_OBSERVER(_name, _prio, _handler, _context)                                      \
  STATIC_ASSERT(NRF_SDH_BLE_ENABLED, "NRF_SDH_BLE_ENABLED not set!");                                 \
  STATIC_ASSERT(_prio < NRF_SDH_BLE_OBSERVER_PRIO_LEVELS, "Priority level unavailable.");             \
  NRF_SECTION_SET_ITEM_REGISTER(sdh_ble_observers, _prio, static nrf_sdh_ble_evt_observer_t _name) =  \
  {                                                                                                   \
      .handler   = _handler,                                                                          \
      .p_context = _context                                                                           \
  }
  
  /**@brief   Macro for registering an array of @ref nrf_sdh_ble_evt_observer_t.
   *          Modules that want to be notified about SoC events must register the handler using
   *          this macro.
   *
   * Each observer's handler will be dispatched an event with its relative context from @p _context.
   * This macro places the observer in a section named "sdh_ble_observers".
   *
   * @param[in]   _name       Observer name.
   * @param[in]   _prio       Priority of the observer event handler.
   *                          The smaller the number, the higher the priority.
   * @param[in]   _handler    BLE event handler.
   * @param[in]   _context    An array of parameters to the event handler.
   * @param[in]   _cnt        Number of observers to register.
   * @hideinitializer
   */
  #define NRF_SDH_BLE_OBSERVERS(_name, _prio, _handler, _context, _cnt)                                    \
  STATIC_ASSERT(NRF_SDH_BLE_ENABLED, "NRF_SDH_BLE_ENABLED not set!");                                      \
  STATIC_ASSERT(_prio < NRF_SDH_BLE_OBSERVER_PRIO_LEVELS, "Priority level unavailable.");                  \
  NRF_SECTION_SET_ITEM_REGISTER(sdh_ble_observers, _prio, static nrf_sdh_ble_evt_observer_t _name[_cnt]) = \
  {                                                                                                        \
      MACRO_REPEAT_FOR(_cnt, HANDLER_SET, _handler, _context)                                              \
  }
  
  #if !(defined(DOXYGEN))
  #define HANDLER_SET(_idx, _handler, _context)                                                       \
  {                                                                                                   \
      .handler   = _handler,                                                                          \
      .p_context = _context[_idx],                                                                    \
  },
  #endif
  
  #else // __LINT__
  
  /* Swallow semicolons */
  /*lint -save -esym(528, *) -esym(529, *) : Symbol not referenced. */
  #define NRF_SDH_BLE_OBSERVER(A, B, C, D)     static int semicolon_swallow_##A
  #define NRF_SDH_BLE_OBSERVERS(A, B, C, D, E) static int semicolon_swallow_##A
  /*lint -restore */
  
  #endif
  
  
  /**@brief   BLE stack event handler. */
  typedef void (*nrf_sdh_ble_evt_handler_t)(ble_evt_t const * p_ble_evt, void * p_context);
  
  /**@brief   BLE event observer. */
  typedef struct
  {
      nrf_sdh_ble_evt_handler_t handler;      //!< BLE event handler.
      void *                    p_context;    //!< A parameter to the event handler.
  } const nrf_sdh_ble_evt_observer_t;
  
  
  /**@brief   Function for retrieving the address of the start of application's RAM.
   *
   * @param[out]  p_app_ram_start     Address of the start of application's RAM.
   *
   * @retval  NRF_SUCCESS     If the address was successfully retrieved.
   * @retval  NRF_ERROR_NULL  If @p p_app_ram_start was @c NULL.
   */
  ret_code_t nrf_sdh_ble_app_ram_start_get(uint32_t * p_app_ram_start);
  
  
  /**@brief   Set the default BLE stack configuration.
   *
   * This function configures the BLE stack with the settings specified in the
   * SoftDevice handler BLE configuration. The following configurations will be set:
   * - Number of peripheral links
   * - Number of central links
   * - ATT MTU size (for the given connection)
   * - Vendor specific UUID count
   * - GATTS Attribute table size
   * - Service changed
   *
   * @param[in]   conn_cfg_tag    The connection to configure.
   * @param[out]  p_ram_start     Application RAM start address.
   */
  ret_code_t nrf_sdh_ble_default_cfg_set(uint8_t conn_cfg_tag, uint32_t * p_ram_start);
  
  
  /**@brief   Function for configuring and enabling the BLE stack.
   *
   * @param[in]   p_app_ram_start     Address of the start of application's RAM.
   */
  ret_code_t nrf_sdh_ble_enable(uint32_t * p_app_ram_start);
  
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif // NRF_SDH_BLE_H__
  
  /** @} */
  