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 
00017 #include "common/common.h "
00018 #include "nordic_common.h"
00019 
00020 #include "app_timer.h "
00021 #include "btle.h"
00022 
00023 #include "ble_stack_handler_types.h "
00024 #include "ble_radio_notification.h "
00025 #include "ble_flash.h "
00026 #if NEED_BOND_MANAGER
00027 #include "ble_bondmngr.h"
00028 #endif
00029 #include "ble_conn_params.h "
00030 
00031 #include "btle_gap.h"
00032 #include "btle_advertising.h"
00033 #include "custom/custom_helper.h"
00034 
00035 #include "softdevice_handler.h "
00036 #include "pstorage.h "
00037 
00038 #include "GapEvents.h"
00039 #include "nRF51Gap.h"
00040 #include "nRF51GattServer.h"
00041 
00042 #include "ble_hci.h"
00043 
00044 #if NEED_BOND_MANAGER /* disabled by default */
00045 static void service_error_callback(uint32_t nrf_error);
00046 #endif
00047 extern "C" void assert_nrf_callback(uint16_t line_num, const uint8_t *p_file_name);
00048 void            app_error_handler(uint32_t error_code, uint32_t line_num, const uint8_t *p_file_name);
00049 
00050 #if NEED_BOND_MANAGER /* disabled by default */
00051 static error_t bond_manager_init(void);
00052 #endif
00053 
00054 static void btle_handler(ble_evt_t *p_ble_evt);
00055 
00056 static void sys_evt_dispatch(uint32_t sys_evt)
00057 {
00058 #if NEED_PSTORAGE /* disabled by default */
00059     pstorage_sys_event_handler(sys_evt);
00060 #endif
00061 }
00062 
00063 error_t btle_init(void)
00064 {
00065     const bool useScheduler = false;
00066 #ifdef TARGET_HRM1017
00067     SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_RC_250_PPM_4000MS_CALIBRATION, useScheduler);
00068 #else
00069     SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_XTAL_20_PPM, useScheduler);
00070 #endif
00071 
00072     // Enable BLE stack
00073     /**
00074      * Using this call, the application can select whether to include the
00075      * Service Changed characteristic in the GATT Server. The default in all
00076      * previous releases has been to include the Service Changed characteristic,
00077      * but this affects how GATT clients behave. Specifically, it requires
00078      * clients to subscribe to this attribute and not to cache attribute handles
00079      * between connections unless the devices are bonded. If the application
00080      * does not need to change the structure of the GATT server attributes at
00081      * runtime this adds unnecessary complexity to the interaction with peer
00082      * clients. If the SoftDevice is enabled with the Service Changed
00083      * Characteristics turned off, then clients are allowed to cache attribute
00084      * handles making applications simpler on both sides.
00085      */
00086     static const bool IS_SRVC_CHANGED_CHARACT_PRESENT = true;
00087     ble_enable_params_t enableParams = {
00088         .gatts_enable_params = {
00089             .service_changed = IS_SRVC_CHANGED_CHARACT_PRESENT
00090         }
00091     };
00092     if (sd_ble_enable(&enableParams) != NRF_SUCCESS) {
00093         return ERROR_INVALID_PARAM;
00094     }
00095 
00096     ble_gap_addr_t addr;
00097     if (sd_ble_gap_address_get(&addr) != NRF_SUCCESS) {
00098         return ERROR_INVALID_PARAM;
00099     }
00100     if (sd_ble_gap_address_set(BLE_GAP_ADDR_CYCLE_MODE_NONE, &addr) != NRF_SUCCESS) {
00101         return ERROR_INVALID_PARAM;
00102     }
00103 
00104     ASSERT_STATUS( softdevice_ble_evt_handler_set(btle_handler));
00105     ASSERT_STATUS( softdevice_sys_evt_handler_set(sys_evt_dispatch));
00106 
00107 #if NEED_BOND_MANAGER /* disabled by default */
00108     bond_manager_init();
00109 #endif
00110     btle_gap_init();
00111 
00112     return ERROR_NONE;
00113 }
00114 
00115 static void btle_handler(ble_evt_t *p_ble_evt)
00116 {
00117     /* Library service handlers */
00118 #if NEED_BOND_MANAGER /* disabled by default */
00119     ble_bondmngr_on_ble_evt(p_ble_evt);
00120 #endif
00121 #if SDK_CONN_PARAMS_MODULE_ENABLE
00122     ble_conn_params_on_ble_evt(p_ble_evt);
00123 #endif
00124 
00125     /* Custom event handler */
00126     switch (p_ble_evt->header.evt_id) {
00127         case BLE_GAP_EVT_CONNECTED: {
00128             Gap::Handle_t handle = p_ble_evt->evt.gap_evt.conn_handle;
00129             nRF51Gap::getInstance().setConnectionHandle(handle);
00130             const Gap::ConnectionParams_t *params = reinterpret_cast<Gap::ConnectionParams_t *>(&(p_ble_evt->evt.gap_evt.params.connected.conn_params));
00131             nRF51Gap::getInstance().processConnectionEvent(handle, params);
00132             break;
00133         }
00134 
00135         case BLE_GAP_EVT_DISCONNECTED: {
00136             Gap::Handle_t handle = p_ble_evt->evt.gap_evt.conn_handle;
00137             // Since we are not in a connection and have not started advertising,
00138             // store bonds
00139             nRF51Gap::getInstance().setConnectionHandle (BLE_CONN_HANDLE_INVALID);
00140 #if NEED_BOND_MANAGER /* disabled by default */
00141             ASSERT_STATUS_RET_VOID ( ble_bondmngr_bonded_centrals_store());
00142 #endif
00143 
00144             Gap::DisconnectionReason_t reason;
00145             switch (p_ble_evt->evt.gap_evt.params.disconnected.reason) {
00146                 case BLE_HCI_LOCAL_HOST_TERMINATED_CONNECTION:
00147                     reason = Gap::LOCAL_HOST_TERMINATED_CONNECTION;
00148                     break;
00149                 case BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION:
00150                     reason = Gap::REMOTE_USER_TERMINATED_CONNECTION;
00151                     break;
00152                 case BLE_HCI_CONN_INTERVAL_UNACCEPTABLE:
00153                     reason = Gap::CONN_INTERVAL_UNACCEPTABLE;
00154                     break;
00155                 default:
00156                     /* Please refer to the underlying transport library for an
00157                      * interpretion of this reason's value. */
00158                     reason = static_cast<Gap::DisconnectionReason_t>(p_ble_evt->evt.gap_evt.params.disconnected.reason);
00159                     break;
00160             }
00161             nRF51Gap::getInstance().processDisconnectionEvent(handle, reason);
00162             break;
00163         }
00164 
00165         case BLE_GAP_EVT_SEC_PARAMS_REQUEST: {
00166             ble_gap_sec_params_t sec_params = {0};
00167 
00168             sec_params.timeout      = 30; /*< Timeout for Pairing Request or
00169                                    * Security Request (in seconds). */
00170             sec_params.bond         = 1;  /**< Perform bonding. */
00171             sec_params.mitm         = CFG_BLE_SEC_PARAM_MITM;
00172             sec_params.io_caps      = CFG_BLE_SEC_PARAM_IO_CAPABILITIES;
00173             sec_params.oob          = CFG_BLE_SEC_PARAM_OOB;
00174             sec_params.min_key_size = CFG_BLE_SEC_PARAM_MIN_KEY_SIZE;
00175             sec_params.max_key_size = CFG_BLE_SEC_PARAM_MAX_KEY_SIZE;
00176 
00177             ASSERT_STATUS_RET_VOID(sd_ble_gap_sec_params_reply(nRF51Gap::getInstance().getConnectionHandle(),
00178                                                                BLE_GAP_SEC_STATUS_SUCCESS, &sec_params));
00179         }
00180         break;
00181 
00182         case BLE_GAP_EVT_TIMEOUT:
00183             if (p_ble_evt->evt.gap_evt.params.timeout.src == BLE_GAP_TIMEOUT_SRC_ADVERTISEMENT) {
00184                 nRF51Gap::getInstance().processEvent(GapEvents::GAP_EVENT_TIMEOUT);
00185             }
00186             break;
00187 
00188         case BLE_GATTC_EVT_TIMEOUT:
00189         case BLE_GATTS_EVT_TIMEOUT:
00190             // Disconnect on GATT Server and Client timeout events.
00191             // ASSERT_STATUS_RET_VOID (sd_ble_gap_disconnect(m_conn_handle,
00192             // BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION));
00193             break;
00194 
00195         default:
00196             break;
00197     }
00198 
00199     nRF51GattServer::getInstance().hwCallback(p_ble_evt);
00200 }
00201 
00202 #if NEED_BOND_MANAGER /* disabled by default */
00203 /**************************************************************************/
00204 /*!
00205     @brief      Initialises the bond manager
00206 
00207     @note       Bond data will be cleared on reset if the bond delete
00208                 button is pressed during initialisation (the button is
00209                 defined as CFG_BLE_BOND_DELETE_BUTTON_NUM).
00210 
00211     @returns
00212 */
00213 /**************************************************************************/
00214 static error_t bond_manager_init(void)
00215 {
00216     ble_bondmngr_init_t bond_para = {0};
00217 
00218     ASSERT_STATUS ( pstorage_init());
00219 
00220     bond_para.flash_page_num_bond     = CFG_BLE_BOND_FLASH_PAGE_BOND;
00221     bond_para.flash_page_num_sys_attr = CFG_BLE_BOND_FLASH_PAGE_SYS_ATTR;
00222     //bond_para.bonds_delete            = boardButtonCheck(CFG_BLE_BOND_DELETE_BUTTON_NUM) ;
00223     bond_para.evt_handler   = NULL;
00224     bond_para.error_handler = service_error_callback;
00225 
00226     ASSERT_STATUS( ble_bondmngr_init( &bond_para ));
00227 
00228     /* Init radio active/inactive notification to flash (to only perform flashing when the radio is inactive) */
00229     //  ASSERT_STATUS( ble_radio_notification_init(NRF_APP_PRIORITY_HIGH,
00230     //                                             NRF_RADIO_NOTIFICATION_DISTANCE_4560US,
00231     //                                             ble_flash_on_radio_active_evt) );
00232 
00233     return ERROR_NONE;
00234 }
00235 #endif // #if NEED_BOND_MANAGER
00236 
00237 #if NEED_BOND_MANAGER /* disabled by default */
00238 /**************************************************************************/
00239 /*!
00240     @brief
00241     @param[in]  nrf_error
00242     @returns
00243 */
00244 /**************************************************************************/
00245 static void service_error_callback(uint32_t nrf_error)
00246 {
00247     ASSERT_STATUS_RET_VOID( nrf_error );
00248 }
00249 #endif // #if NEED_BOND_MANAGER
00250 
00251 /**************************************************************************/
00252 /*!
00253     @brief      Callback when an error occurs inside the SoftDevice
00254 
00255     @param[in]  line_num
00256     @param[in]  p-file_name
00257 
00258     @returns
00259 */
00260 /**************************************************************************/
00261 void assert_nrf_callback(uint16_t line_num, const uint8_t *p_file_name)
00262 {
00263     ASSERT(false, (void) 0);
00264 }
00265 
00266 /**************************************************************************/
00267 /*!
00268     @brief      Handler for general errors above the SoftDevice layer.
00269                 Typically we can' recover from this so we do a reset.
00270 
00271     @param[in]  error_code
00272     @param[in]  line_num
00273     @param[in]  p-file_name
00274 
00275     @returns
00276 */
00277 /**************************************************************************/
00278 void app_error_handler(uint32_t       error_code,
00279                        uint32_t       line_num,
00280                        const uint8_t *p_file_name)
00281 {
00282     ASSERT_STATUS_RET_VOID( error_code );
00283     NVIC_SystemReset();
00284 }