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 "btle.h"
00021 
00022 #include "ble_stack_handler_types.h "
00023 #include "ble_flash.h "
00024 #if NEED_BOND_MANAGER
00025 #include "ble_bondmngr.h"
00026 #endif
00027 #include "ble_conn_params.h "
00028 
00029 #include "btle_gap.h"
00030 #include "btle_advertising.h"
00031 #include "custom/custom_helper.h"
00032 
00033 #include "softdevice_handler.h "
00034 #include "pstorage.h "
00035 
00036 #include "GapEvents.h"
00037 #include "nRF51Gap.h"
00038 #include "nRF51GattServer.h"
00039 
00040 #include "ble_hci.h"
00041 
00042 #if NEED_BOND_MANAGER /* disabled by default */
00043 static void service_error_callback(uint32_t nrf_error);
00044 #endif
00045 extern "C" void assert_nrf_callback(uint16_t line_num, const uint8_t *p_file_name);
00046 void            app_error_handler(uint32_t error_code, uint32_t line_num, const uint8_t *p_file_name);
00047 
00048 #if NEED_BOND_MANAGER /* disabled by default */
00049 static error_t bond_manager_init(void);
00050 #endif
00051 
00052 static void btle_handler(ble_evt_t *p_ble_evt);
00053 
00054 static void sys_evt_dispatch(uint32_t sys_evt)
00055 {
00056     pstorage_sys_event_handler(sys_evt);
00057 }
00058 
00059 error_t btle_init(void)
00060 {
00061     const bool useScheduler = false;
00062 #if defined(TARGET_DELTA_DFCM_NNN40) || defined(TARGET_HRM1017)
00063     SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_RC_250_PPM_4000MS_CALIBRATION, useScheduler);
00064 #else
00065     SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_XTAL_20_PPM, useScheduler);
00066 #endif
00067 
00068     // Enable BLE stack
00069     /**
00070      * Using this call, the application can select whether to include the
00071      * Service Changed characteristic in the GATT Server. The default in all
00072      * previous releases has been to include the Service Changed characteristic,
00073      * but this affects how GATT clients behave. Specifically, it requires
00074      * clients to subscribe to this attribute and not to cache attribute handles
00075      * between connections unless the devices are bonded. If the application
00076      * does not need to change the structure of the GATT server attributes at
00077      * runtime this adds unnecessary complexity to the interaction with peer
00078      * clients. If the SoftDevice is enabled with the Service Changed
00079      * Characteristics turned off, then clients are allowed to cache attribute
00080      * handles making applications simpler on both sides.
00081      */
00082     static const bool IS_SRVC_CHANGED_CHARACT_PRESENT = true;
00083     ble_enable_params_t enableParams = {
00084         .gatts_enable_params = {
00085             .service_changed = IS_SRVC_CHANGED_CHARACT_PRESENT
00086         }
00087     };
00088     if (sd_ble_enable(&enableParams) != NRF_SUCCESS) {
00089         return ERROR_INVALID_PARAM;
00090     }
00091 
00092     ble_gap_addr_t addr;
00093     if (sd_ble_gap_address_get(&addr) != NRF_SUCCESS) {
00094         return ERROR_INVALID_PARAM;
00095     }
00096     if (sd_ble_gap_address_set(BLE_GAP_ADDR_CYCLE_MODE_NONE, &addr) != NRF_SUCCESS) {
00097         return ERROR_INVALID_PARAM;
00098     }
00099 
00100     ASSERT_STATUS( softdevice_ble_evt_handler_set(btle_handler));
00101     ASSERT_STATUS( softdevice_sys_evt_handler_set(sys_evt_dispatch));
00102 
00103 #if NEED_BOND_MANAGER /* disabled by default */
00104     bond_manager_init();
00105 #endif
00106     btle_gap_init();
00107 
00108     return ERROR_NONE;
00109 }
00110 
00111 static void btle_handler(ble_evt_t *p_ble_evt)
00112 {
00113     /* Library service handlers */
00114 #if NEED_BOND_MANAGER /* disabled by default */
00115     ble_bondmngr_on_ble_evt(p_ble_evt);
00116 #endif
00117 #if SDK_CONN_PARAMS_MODULE_ENABLE
00118     ble_conn_params_on_ble_evt(p_ble_evt);
00119 #endif
00120 
00121     /* Custom event handler */
00122     switch (p_ble_evt->header.evt_id) {
00123         case BLE_GAP_EVT_CONNECTED: {
00124             Gap::Handle_t handle = p_ble_evt->evt.gap_evt.conn_handle;
00125             nRF51Gap::getInstance().setConnectionHandle(handle);
00126             const Gap::ConnectionParams_t *params = reinterpret_cast<Gap::ConnectionParams_t *>(&(p_ble_evt->evt.gap_evt.params.connected.conn_params));
00127             const ble_gap_addr_t *peer = &p_ble_evt->evt.gap_evt.params.connected.peer_addr;
00128             nRF51Gap::getInstance().processConnectionEvent(handle, static_cast<Gap::addr_type_t>(peer->addr_type), peer->addr, params);
00129             break;
00130         }
00131 
00132         case BLE_GAP_EVT_DISCONNECTED: {
00133             Gap::Handle_t handle = p_ble_evt->evt.gap_evt.conn_handle;
00134             // Since we are not in a connection and have not started advertising,
00135             // store bonds
00136             nRF51Gap::getInstance().setConnectionHandle (BLE_CONN_HANDLE_INVALID);
00137 #if NEED_BOND_MANAGER /* disabled by default */
00138             ASSERT_STATUS_RET_VOID ( ble_bondmngr_bonded_centrals_store());
00139 #endif
00140 
00141             Gap::DisconnectionReason_t reason;
00142             switch (p_ble_evt->evt.gap_evt.params.disconnected.reason) {
00143                 case BLE_HCI_LOCAL_HOST_TERMINATED_CONNECTION:
00144                     reason = Gap::LOCAL_HOST_TERMINATED_CONNECTION;
00145                     break;
00146                 case BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION:
00147                     reason = Gap::REMOTE_USER_TERMINATED_CONNECTION;
00148                     break;
00149                 case BLE_HCI_CONN_INTERVAL_UNACCEPTABLE:
00150                     reason = Gap::CONN_INTERVAL_UNACCEPTABLE;
00151                     break;
00152                 default:
00153                     /* Please refer to the underlying transport library for an
00154                      * interpretion of this reason's value. */
00155                     reason = static_cast<Gap::DisconnectionReason_t>(p_ble_evt->evt.gap_evt.params.disconnected.reason);
00156                     break;
00157             }
00158             nRF51Gap::getInstance().processDisconnectionEvent(handle, reason);
00159             break;
00160         }
00161 
00162         case BLE_GAP_EVT_SEC_PARAMS_REQUEST: {
00163             ble_gap_sec_params_t sec_params = {0};
00164 
00165             sec_params.timeout      = 30; /*< Timeout for Pairing Request or
00166                                    * Security Request (in seconds). */
00167             sec_params.bond         = 1;  /**< Perform bonding. */
00168             sec_params.mitm         = CFG_BLE_SEC_PARAM_MITM;
00169             sec_params.io_caps      = CFG_BLE_SEC_PARAM_IO_CAPABILITIES;
00170             sec_params.oob          = CFG_BLE_SEC_PARAM_OOB;
00171             sec_params.min_key_size = CFG_BLE_SEC_PARAM_MIN_KEY_SIZE;
00172             sec_params.max_key_size = CFG_BLE_SEC_PARAM_MAX_KEY_SIZE;
00173 
00174             ASSERT_STATUS_RET_VOID(sd_ble_gap_sec_params_reply(nRF51Gap::getInstance().getConnectionHandle(),
00175                                                                BLE_GAP_SEC_STATUS_SUCCESS, &sec_params));
00176         }
00177         break;
00178 
00179         case BLE_GAP_EVT_TIMEOUT:
00180             if (p_ble_evt->evt.gap_evt.params.timeout.src == BLE_GAP_TIMEOUT_SRC_ADVERTISEMENT) {
00181                 nRF51Gap::getInstance().processEvent(GapEvents::GAP_EVENT_TIMEOUT);
00182             }
00183             break;
00184 
00185         case BLE_GATTC_EVT_TIMEOUT:
00186         case BLE_GATTS_EVT_TIMEOUT:
00187             // Disconnect on GATT Server and Client timeout events.
00188             // ASSERT_STATUS_RET_VOID (sd_ble_gap_disconnect(m_conn_handle,
00189             // BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION));
00190             break;
00191 
00192         default:
00193             break;
00194     }
00195 
00196     nRF51GattServer::getInstance().hwCallback(p_ble_evt);
00197 }
00198 
00199 #if NEED_BOND_MANAGER /* disabled by default */
00200 /**************************************************************************/
00201 /*!
00202     @brief      Initialises the bond manager
00203 
00204     @note       Bond data will be cleared on reset if the bond delete
00205                 button is pressed during initialisation (the button is
00206                 defined as CFG_BLE_BOND_DELETE_BUTTON_NUM).
00207 
00208     @returns
00209 */
00210 /**************************************************************************/
00211 static error_t bond_manager_init(void)
00212 {
00213     ble_bondmngr_init_t bond_para = {0};
00214 
00215     ASSERT_STATUS ( pstorage_init());
00216 
00217     bond_para.flash_page_num_bond     = CFG_BLE_BOND_FLASH_PAGE_BOND;
00218     bond_para.flash_page_num_sys_attr = CFG_BLE_BOND_FLASH_PAGE_SYS_ATTR;
00219     //bond_para.bonds_delete            = boardButtonCheck(CFG_BLE_BOND_DELETE_BUTTON_NUM) ;
00220     bond_para.evt_handler   = NULL;
00221     bond_para.error_handler = service_error_callback;
00222 
00223     ASSERT_STATUS( ble_bondmngr_init( &bond_para ));
00224 
00225     /* Init radio active/inactive notification to flash (to only perform flashing when the radio is inactive) */
00226     //  ASSERT_STATUS( ble_radio_notification_init(NRF_APP_PRIORITY_HIGH,
00227     //                                             NRF_RADIO_NOTIFICATION_DISTANCE_4560US,
00228     //                                             ble_flash_on_radio_active_evt) );
00229 
00230     return ERROR_NONE;
00231 }
00232 #endif // #if NEED_BOND_MANAGER
00233 
00234 #if NEED_BOND_MANAGER /* disabled by default */
00235 /**************************************************************************/
00236 /*!
00237     @brief
00238     @param[in]  nrf_error
00239     @returns
00240 */
00241 /**************************************************************************/
00242 static void service_error_callback(uint32_t nrf_error)
00243 {
00244     ASSERT_STATUS_RET_VOID( nrf_error );
00245 }
00246 #endif // #if NEED_BOND_MANAGER
00247 
00248 /**************************************************************************/
00249 /*!
00250     @brief      Callback when an error occurs inside the SoftDevice
00251 
00252     @param[in]  line_num
00253     @param[in]  p-file_name
00254 
00255     @returns
00256 */
00257 /**************************************************************************/
00258 void assert_nrf_callback(uint16_t line_num, const uint8_t *p_file_name)
00259 {
00260     ASSERT(false, (void) 0);
00261 }
00262 
00263 /**************************************************************************/
00264 /*!
00265     @brief      Handler for general errors above the SoftDevice layer.
00266                 Typically we can' recover from this so we do a reset.
00267 
00268     @param[in]  error_code
00269     @param[in]  line_num
00270     @param[in]  p-file_name
00271 
00272     @returns
00273 */
00274 /**************************************************************************/
00275 void app_error_handler(uint32_t       error_code,
00276                        uint32_t       line_num,
00277                        const uint8_t *p_file_name)
00278 {
00279     ASSERT_STATUS_RET_VOID( error_code );
00280     NVIC_SystemReset();
00281 }