btle.cpp

00001 /* mbed Microcontroller Library
00002  * Copyright (c) 2006-2013 ARM Limited
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *     http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 #include "common/common.h "
00017 
00018 #include "app_timer.h "
00019 #include "btle.h"
00020 
00021 #include "ble_stack_handler_types.h "
00022 #include "ble_radio_notification.h "
00023 #include "ble_flash.h "
00024 #include "ble_bondmngr.h "
00025 #include "ble_conn_params.h "
00026 
00027 #include "btle_gap.h"
00028 #include "btle_advertising.h"
00029 #include "custom/custom_helper.h"
00030 
00031 #include "nordic_common.h"
00032 #include "softdevice_handler.h "
00033 #include "pstorage.h "
00034 
00035 #include "hw/GapEvents.h"
00036 #include "hw/nRF51822n/nRF51Gap.h"
00037 #include "hw/nRF51822n/nRF51GattServer.h"
00038 
00039 static void service_error_callback(uint32_t nrf_error);
00040 void        assert_nrf_callback(uint16_t line_num, const uint8_t * p_file_name);
00041 void        app_error_handler(uint32_t error_code, uint32_t line_num, const uint8_t * p_file_name);
00042 
00043 static error_t bond_manager_init(void);
00044 
00045 static void btle_handler(ble_evt_t * p_ble_evt);
00046 
00047 /**************************************************************************/
00048 /*!
00049 
00050 */
00051 /**************************************************************************/
00052 static void sys_evt_dispatch(uint32_t sys_evt)
00053 {
00054   pstorage_sys_event_handler(sys_evt);
00055 }
00056 
00057 /**************************************************************************/
00058 /*!
00059     @brief      Initialises BTLE and the underlying HW/SoftDevice
00060 
00061     @returns
00062 */
00063 /**************************************************************************/
00064 error_t btle_init(void)
00065 {
00066   APP_TIMER_INIT(0, 8, 5, false);
00067   SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_XTAL_20_PPM, false);
00068 
00069   ASSERT_STATUS( softdevice_ble_evt_handler_set(btle_handler) );
00070   ASSERT_STATUS( softdevice_sys_evt_handler_set(sys_evt_dispatch) );
00071 
00072   bond_manager_init();
00073   btle_gap_init();
00074 
00075   return ERROR_NONE;
00076 }
00077 
00078 /**************************************************************************/
00079 /*!
00080     @brief
00081 
00082     @param[in]  p_ble_evt
00083     
00084     @returns
00085 */
00086 /**************************************************************************/
00087 static void btle_handler(ble_evt_t * p_ble_evt)
00088 {
00089   /* Library service handlers */
00090   ble_bondmngr_on_ble_evt(p_ble_evt);
00091   ble_conn_params_on_ble_evt(p_ble_evt);
00092 
00093   /* Custom event handler */
00094   switch (p_ble_evt->header.evt_id)
00095   {
00096     case BLE_GAP_EVT_CONNECTED:
00097       nRF51GattServer::getInstance().m_connectionHandle = p_ble_evt->evt.gap_evt.conn_handle;
00098       nRF51Gap::getInstance().handleEvent(GapEvents::GAP_EVENT_CONNECTED);
00099       break;
00100 
00101     case BLE_GAP_EVT_DISCONNECTED:
00102       // Since we are not in a connection and have not started advertising, store bonds
00103       nRF51GattServer::getInstance().m_connectionHandle = BLE_CONN_HANDLE_INVALID;
00104       ASSERT_STATUS_RET_VOID ( ble_bondmngr_bonded_centrals_store() );
00105       nRF51Gap::getInstance().handleEvent(GapEvents::GAP_EVENT_DISCONNECTED);
00106       break;
00107 
00108     case BLE_GAP_EVT_SEC_PARAMS_REQUEST:
00109       {
00110         ble_gap_sec_params_t sec_params = { 0 };
00111 
00112         sec_params.timeout      = 30                                ; /**< Timeout for Pairing Request or Security Request (in seconds). */
00113         sec_params.bond         = 1                                 ; /**< Perform bonding. */
00114         sec_params.mitm         = CFG_BLE_SEC_PARAM_MITM            ;
00115         sec_params.io_caps      = CFG_BLE_SEC_PARAM_IO_CAPABILITIES ;
00116         sec_params.oob          = CFG_BLE_SEC_PARAM_OOB             ;
00117         sec_params.min_key_size = CFG_BLE_SEC_PARAM_MIN_KEY_SIZE    ;
00118         sec_params.max_key_size = CFG_BLE_SEC_PARAM_MAX_KEY_SIZE    ;
00119 
00120         ASSERT_STATUS_RET_VOID ( sd_ble_gap_sec_params_reply(nRF51GattServer::getInstance().m_connectionHandle, BLE_GAP_SEC_STATUS_SUCCESS, &sec_params) );
00121       }
00122       break;
00123 
00124     case BLE_GAP_EVT_TIMEOUT:
00125       if (p_ble_evt->evt.gap_evt.params.timeout.src == BLE_GAP_TIMEOUT_SRC_ADVERTISEMENT)
00126       {
00127         nRF51Gap::getInstance().handleEvent(GapEvents::GAP_EVENT_TIMEOUT);
00128       }
00129       break;
00130 
00131     case BLE_GATTC_EVT_TIMEOUT:
00132     case BLE_GATTS_EVT_TIMEOUT:
00133       // Disconnect on GATT Server and Client timeout events.
00134       // ASSERT_STATUS_RET_VOID (sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION));
00135       break;
00136 
00137     default: 
00138       break;
00139   }
00140 
00141   nRF51GattServer::getInstance().hwCallback(p_ble_evt);
00142 }
00143 
00144 /**************************************************************************/
00145 /*!
00146     @brief      Initialises the bond manager
00147 
00148     @note       Bond data will be cleared on reset if the bond delete
00149                 button is pressed during initialisation (the button is
00150                 defined as CFG_BLE_BOND_DELETE_BUTTON_NUM).
00151 
00152     @returns
00153 */
00154 /**************************************************************************/
00155 static error_t bond_manager_init(void)
00156 {
00157   ble_bondmngr_init_t bond_para = { 0 };
00158 
00159   ASSERT_STATUS ( pstorage_init() );
00160 
00161   bond_para.flash_page_num_bond     = CFG_BLE_BOND_FLASH_PAGE_BOND                     ;
00162   bond_para.flash_page_num_sys_attr = CFG_BLE_BOND_FLASH_PAGE_SYS_ATTR                 ;
00163   //bond_para.bonds_delete            = boardButtonCheck(CFG_BLE_BOND_DELETE_BUTTON_NUM) ;
00164   bond_para.evt_handler             = NULL                                             ;
00165   bond_para.error_handler           = service_error_callback                           ;
00166 
00167   ASSERT_STATUS( ble_bondmngr_init( &bond_para ) );
00168 
00169   /* Init radio active/inactive notification to flash (to only perform flashing when the radio is inactive) */
00170   //  ASSERT_STATUS( ble_radio_notification_init(NRF_APP_PRIORITY_HIGH,
00171   //                                             NRF_RADIO_NOTIFICATION_DISTANCE_4560US,
00172   //                                             ble_flash_on_radio_active_evt) );
00173 
00174   return ERROR_NONE;
00175 }
00176 
00177 /**************************************************************************/
00178 /*!
00179     @brief
00180     @param[in]  nrf_error
00181     @returns
00182 */
00183 /**************************************************************************/
00184 static void service_error_callback(uint32_t nrf_error)
00185 {
00186   ASSERT_STATUS_RET_VOID( nrf_error );
00187 }
00188 
00189 /**************************************************************************/
00190 /*!
00191     @brief      Callback when an error occurs inside the SoftDevice
00192 
00193     @param[in]  line_num
00194     @param[in]  p-file_name
00195 
00196     @returns
00197 */
00198 /**************************************************************************/
00199 void assert_nrf_callback(uint16_t line_num, const uint8_t * p_file_name)
00200 {
00201   ASSERT(false, (void) 0);
00202 }
00203 
00204 /**************************************************************************/
00205 /*!
00206     @brief      Handler for general errors above the SoftDevice layer.
00207                 Typically we can' recover from this so we do a reset.
00208 
00209     @param[in]  error_code
00210     @param[in]  line_num
00211     @param[in]  p-file_name
00212 
00213     @returns
00214 */
00215 /**************************************************************************/
00216 void app_error_handler(uint32_t error_code, uint32_t line_num, const uint8_t * p_file_name)
00217 {
00218   ASSERT_STATUS_RET_VOID( error_code );
00219   NVIC_SystemReset();
00220 }