text: /* mbed Microcontroller Library
   * Copyright (c) 2006-2013 ARM Limited
   *
   * 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.
   */
  
  #include "common/common.h"
  #include "nordic_common.h"
  
  #include "app_timer.h"
  #include "btle.h"
  
  #include "ble_stack_handler_types.h"
  #include "ble_radio_notification.h"
  #include "ble_flash.h"
  #if NEED_BOND_MANAGER
  #include "ble_bondmngr.h"
  #endif
  #include "ble_conn_params.h"
  
  #include "btle_gap.h"
  #include "btle_advertising.h"
  #include "custom/custom_helper.h"
  
  #include "softdevice_handler.h"
  #include "pstorage.h"
  
  #include "GapEvents.h"
  #include "nRF51Gap.h"
  #include "nRF51GattServer.h"
  
  #include "ble_hci.h"
  
  #if NEED_BOND_MANAGER /* disabled by default */
  static void service_error_callback(uint32_t nrf_error);
  #endif
  extern "C" void assert_nrf_callback(uint16_t line_num, const uint8_t *p_file_name);
  void            app_error_handler(uint32_t error_code, uint32_t line_num, const uint8_t *p_file_name);
  
  #if NEED_BOND_MANAGER /* disabled by default */
  static error_t bond_manager_init(void);
  #endif
  
  static void btle_handler(ble_evt_t *p_ble_evt);
  
  static void sys_evt_dispatch(uint32_t sys_evt)
  {
  #if NEED_PSTORAGE /* disabled by default */
      pstorage_sys_event_handler(sys_evt);
  #endif
  }
  
  error_t btle_init(void)
  {
      const bool useScheduler = false;
  #ifdef TARGET_HRM1017
      SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_RC_250_PPM_4000MS_CALIBRATION, useScheduler);
  #else
      SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_XTAL_20_PPM, useScheduler);
  #endif
  
      // Enable BLE stack
      /**
       * Using this call, the application can select whether to include the
       * Service Changed characteristic in the GATT Server. The default in all
       * previous releases has been to include the Service Changed characteristic,
       * but this affects how GATT clients behave. Specifically, it requires
       * clients to subscribe to this attribute and not to cache attribute handles
       * between connections unless the devices are bonded. If the application
       * does not need to change the structure of the GATT server attributes at
       * runtime this adds unnecessary complexity to the interaction with peer
       * clients. If the SoftDevice is enabled with the Service Changed
       * Characteristics turned off, then clients are allowed to cache attribute
       * handles making applications simpler on both sides.
       */
      static const bool IS_SRVC_CHANGED_CHARACT_PRESENT = true;
      ble_enable_params_t enableParams = {
          .gatts_enable_params = {
              .service_changed = IS_SRVC_CHANGED_CHARACT_PRESENT
          }
      };
      if (sd_ble_enable(&enableParams) != NRF_SUCCESS) {
          return ERROR_INVALID_PARAM;
      }
  
      ble_gap_addr_t addr;
      if (sd_ble_gap_address_get(&addr) != NRF_SUCCESS) {
          return ERROR_INVALID_PARAM;
      }
      if (sd_ble_gap_address_set(BLE_GAP_ADDR_CYCLE_MODE_NONE, &addr) != NRF_SUCCESS) {
          return ERROR_INVALID_PARAM;
      }
  
      ASSERT_STATUS( softdevice_ble_evt_handler_set(btle_handler));
      ASSERT_STATUS( softdevice_sys_evt_handler_set(sys_evt_dispatch));
  
  #if NEED_BOND_MANAGER /* disabled by default */
      bond_manager_init();
  #endif
      btle_gap_init();
  
      return ERROR_NONE;
  }
  
  static void btle_handler(ble_evt_t *p_ble_evt)
  {
      /* Library service handlers */
  #if NEED_BOND_MANAGER /* disabled by default */
      ble_bondmngr_on_ble_evt(p_ble_evt);
  #endif
  #if SDK_CONN_PARAMS_MODULE_ENABLE
      ble_conn_params_on_ble_evt(p_ble_evt);
  #endif
  
      /* Custom event handler */
      switch (p_ble_evt->header.evt_id) {
          case BLE_GAP_EVT_CONNECTED: {
              Gap::Handle_t handle = p_ble_evt->evt.gap_evt.conn_handle;
              nRF51Gap::getInstance().setConnectionHandle(handle);
              const Gap::ConnectionParams_t *params = reinterpret_cast<Gap::ConnectionParams_t *>(&(p_ble_evt->evt.gap_evt.params.connected.conn_params));
              nRF51Gap::getInstance().processConnectionEvent(handle, params);
              break;
          }
  
          case BLE_GAP_EVT_DISCONNECTED: {
              Gap::Handle_t handle = p_ble_evt->evt.gap_evt.conn_handle;
              // Since we are not in a connection and have not started advertising,
              // store bonds
              nRF51Gap::getInstance().setConnectionHandle (BLE_CONN_HANDLE_INVALID);
  #if NEED_BOND_MANAGER /* disabled by default */
              ASSERT_STATUS_RET_VOID ( ble_bondmngr_bonded_centrals_store());
  #endif
  
              Gap::DisconnectionReason_t reason;
              switch (p_ble_evt->evt.gap_evt.params.disconnected.reason) {
                  case BLE_HCI_LOCAL_HOST_TERMINATED_CONNECTION:
                      reason = Gap::LOCAL_HOST_TERMINATED_CONNECTION;
                      break;
                  case BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION:
                      reason = Gap::REMOTE_USER_TERMINATED_CONNECTION;
                      break;
                  case BLE_HCI_CONN_INTERVAL_UNACCEPTABLE:
                      reason = Gap::CONN_INTERVAL_UNACCEPTABLE;
                      break;
                  default:
                      /* Please refer to the underlying transport library for an
                       * interpretion of this reason's value. */
                      reason = static_cast<Gap::DisconnectionReason_t>(p_ble_evt->evt.gap_evt.params.disconnected.reason);
                      break;
              }
              nRF51Gap::getInstance().processDisconnectionEvent(handle, reason);
              break;
          }
  
          case BLE_GAP_EVT_SEC_PARAMS_REQUEST: {
              ble_gap_sec_params_t sec_params = {0};
  
              sec_params.timeout      = 30; /*< Timeout for Pairing Request or
                                     * Security Request (in seconds). */
              sec_params.bond         = 1;  /**< Perform bonding. */
              sec_params.mitm         = CFG_BLE_SEC_PARAM_MITM;
              sec_params.io_caps      = CFG_BLE_SEC_PARAM_IO_CAPABILITIES;
              sec_params.oob          = CFG_BLE_SEC_PARAM_OOB;
              sec_params.min_key_size = CFG_BLE_SEC_PARAM_MIN_KEY_SIZE;
              sec_params.max_key_size = CFG_BLE_SEC_PARAM_MAX_KEY_SIZE;
  
              ASSERT_STATUS_RET_VOID(sd_ble_gap_sec_params_reply(nRF51Gap::getInstance().getConnectionHandle(),
                                                                 BLE_GAP_SEC_STATUS_SUCCESS, &sec_params));
          }
          break;
  
          case BLE_GAP_EVT_TIMEOUT:
              if (p_ble_evt->evt.gap_evt.params.timeout.src == BLE_GAP_TIMEOUT_SRC_ADVERTISEMENT) {
                  nRF51Gap::getInstance().processEvent(GapEvents::GAP_EVENT_TIMEOUT);
              }
              break;
  
          case BLE_GATTC_EVT_TIMEOUT:
          case BLE_GATTS_EVT_TIMEOUT:
              // Disconnect on GATT Server and Client timeout events.
              // ASSERT_STATUS_RET_VOID (sd_ble_gap_disconnect(m_conn_handle,
              // BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION));
              break;
  
          default:
              break;
      }
  
      nRF51GattServer::getInstance().hwCallback(p_ble_evt);
  }
  
  #if NEED_BOND_MANAGER /* disabled by default */
  /**************************************************************************/
  /*!
      @brief      Initialises the bond manager
  
      @note       Bond data will be cleared on reset if the bond delete
                  button is pressed during initialisation (the button is
                  defined as CFG_BLE_BOND_DELETE_BUTTON_NUM).
  
      @returns
  */
  /**************************************************************************/
  static error_t bond_manager_init(void)
  {
      ble_bondmngr_init_t bond_para = {0};
  
      ASSERT_STATUS ( pstorage_init());
  
      bond_para.flash_page_num_bond     = CFG_BLE_BOND_FLASH_PAGE_BOND;
      bond_para.flash_page_num_sys_attr = CFG_BLE_BOND_FLASH_PAGE_SYS_ATTR;
      //bond_para.bonds_delete            = boardButtonCheck(CFG_BLE_BOND_DELETE_BUTTON_NUM) ;
      bond_para.evt_handler   = NULL;
      bond_para.error_handler = service_error_callback;
  
      ASSERT_STATUS( ble_bondmngr_init( &bond_para ));
  
      /* Init radio active/inactive notification to flash (to only perform flashing when the radio is inactive) */
      //  ASSERT_STATUS( ble_radio_notification_init(NRF_APP_PRIORITY_HIGH,
      //                                             NRF_RADIO_NOTIFICATION_DISTANCE_4560US,
      //                                             ble_flash_on_radio_active_evt) );
  
      return ERROR_NONE;
  }
  #endif // #if NEED_BOND_MANAGER
  
  #if NEED_BOND_MANAGER /* disabled by default */
  /**************************************************************************/
  /*!
      @brief
      @param[in]  nrf_error
      @returns
  */
  /**************************************************************************/
  static void service_error_callback(uint32_t nrf_error)
  {
      ASSERT_STATUS_RET_VOID( nrf_error );
  }
  #endif // #if NEED_BOND_MANAGER
  
  /**************************************************************************/
  /*!
      @brief      Callback when an error occurs inside the SoftDevice
  
      @param[in]  line_num
      @param[in]  p-file_name
  
      @returns
  */
  /**************************************************************************/
  void assert_nrf_callback(uint16_t line_num, const uint8_t *p_file_name)
  {
      ASSERT(false, (void) 0);
  }
  
  /**************************************************************************/
  /*!
      @brief      Handler for general errors above the SoftDevice layer.
                  Typically we can' recover from this so we do a reset.
  
      @param[in]  error_code
      @param[in]  line_num
      @param[in]  p-file_name
  
      @returns
  */
  /**************************************************************************/
  void app_error_handler(uint32_t       error_code,
                         uint32_t       line_num,
                         const uint8_t *p_file_name)
  {
      ASSERT_STATUS_RET_VOID( error_code );
      NVIC_SystemReset();
  }
  