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     //SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_XTAL_20_PPM, useScheduler);
00067     SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_RC_250_PPM_4000MS_CALIBRATION, false);
00068 
00069     // Enable BLE stack
00070     /**
00071      * Using this call, the application can select whether to include the
00072      * Service Changed characteristic in the GATT Server. The default in all
00073      * previous releases has been to include the Service Changed characteristic,
00074      * but this affects how GATT clients behave. Specifically, it requires
00075      * clients to subscribe to this attribute and not to cache attribute handles
00076      * between connections unless the devices are bonded. If the application
00077      * does not need to change the structure of the GATT server attributes at
00078      * runtime this adds unnecessary complexity to the interaction with peer
00079      * clients. If the SoftDevice is enabled with the Service Changed
00080      * Characteristics turned off, then clients are allowed to cache attribute
00081      * handles making applications simpler on both sides.
00082      */
00083     static const bool IS_SRVC_CHANGED_CHARACT_PRESENT = false;
00084     ble_enable_params_t enableParams = {
00085         .gatts_enable_params = {
00086             .service_changed = IS_SRVC_CHANGED_CHARACT_PRESENT
00087         }
00088     };
00089     if (sd_ble_enable(&enableParams) != NRF_SUCCESS) {
00090         return ERROR_INVALID_PARAM;
00091     }
00092 
00093     ble_gap_addr_t addr;
00094     if (sd_ble_gap_address_get(&addr) != NRF_SUCCESS) {
00095         return ERROR_INVALID_PARAM;
00096     }
00097     if (sd_ble_gap_address_set(BLE_GAP_ADDR_CYCLE_MODE_NONE, &addr) != NRF_SUCCESS) {
00098         return ERROR_INVALID_PARAM;
00099     }
00100 
00101     ASSERT_STATUS( softdevice_ble_evt_handler_set(btle_handler));
00102     ASSERT_STATUS( softdevice_sys_evt_handler_set(sys_evt_dispatch));
00103 
00104 #if NEED_BOND_MANAGER /* disabled by default */
00105     bond_manager_init();
00106 #endif
00107     btle_gap_init();
00108 
00109     return ERROR_NONE;
00110 }
00111 
00112 static void btle_handler(ble_evt_t *p_ble_evt)
00113 {
00114     /* Library service handlers */
00115 #if NEED_BOND_MANAGER /* disabled by default */
00116     ble_bondmngr_on_ble_evt(p_ble_evt);
00117 #endif
00118 #if SDK_CONN_PARAMS_MODULE_ENABLE
00119     ble_conn_params_on_ble_evt(p_ble_evt);
00120 #endif
00121 
00122     /* Custom event handler */
00123     switch (p_ble_evt->header.evt_id) {
00124         case BLE_GAP_EVT_CONNECTED: {
00125             Gap::Handle_t handle = p_ble_evt->evt.gap_evt.conn_handle;
00126             nRF51Gap::getInstance().setConnectionHandle(handle);
00127             const Gap::ConnectionParams_t *params = reinterpret_cast<Gap::ConnectionParams_t *>(&(p_ble_evt->evt.gap_evt.params.connected.conn_params));
00128             nRF51Gap::getInstance().processConnectionEvent(handle, 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 //            if (p_ble_evt->evt.gap_evt.params.disconnected.reason == BLE_HCI_LOCAL_HOST_TERMINATED_CONNECTION) {
00142                 nRF51Gap::getInstance().processDisconnectionEvent(handle, Gap::LOCAL_HOST_TERMINATED_CONNECTION);
00143 //            }
00144             break;
00145         }
00146 
00147         case BLE_GAP_EVT_SEC_PARAMS_REQUEST: {
00148             ble_gap_sec_params_t sec_params = {0};
00149 
00150             sec_params.timeout      = 30; /*< Timeout for Pairing Request or
00151                                    * Security Request (in seconds). */
00152             sec_params.bond         = 1;  /**< Perform bonding. */
00153             sec_params.mitm         = CFG_BLE_SEC_PARAM_MITM;
00154             sec_params.io_caps      = CFG_BLE_SEC_PARAM_IO_CAPABILITIES;
00155             sec_params.oob          = CFG_BLE_SEC_PARAM_OOB;
00156             sec_params.min_key_size = CFG_BLE_SEC_PARAM_MIN_KEY_SIZE;
00157             sec_params.max_key_size = CFG_BLE_SEC_PARAM_MAX_KEY_SIZE;
00158 
00159             ASSERT_STATUS_RET_VOID(sd_ble_gap_sec_params_reply(nRF51Gap::getInstance().getConnectionHandle(),
00160                                                                BLE_GAP_SEC_STATUS_SUCCESS, &sec_params));
00161         }
00162         break;
00163 
00164         case BLE_GAP_EVT_TIMEOUT:
00165             if (p_ble_evt->evt.gap_evt.params.timeout.src == BLE_GAP_TIMEOUT_SRC_ADVERTISEMENT) {
00166                 nRF51Gap::getInstance().processEvent(GapEvents::GAP_EVENT_TIMEOUT);
00167             }
00168             break;
00169 
00170         case BLE_GATTC_EVT_TIMEOUT:
00171         case BLE_GATTS_EVT_TIMEOUT:
00172             // Disconnect on GATT Server and Client timeout events.
00173             // ASSERT_STATUS_RET_VOID (sd_ble_gap_disconnect(m_conn_handle,
00174             // BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION));
00175             break;
00176 
00177         default:
00178             break;
00179     }
00180 
00181     nRF51GattServer::getInstance().hwCallback(p_ble_evt);
00182 }
00183 
00184 #if NEED_BOND_MANAGER /* disabled by default */
00185 /**************************************************************************/
00186 /*!
00187     @brief      Initialises the bond manager
00188 
00189     @note       Bond data will be cleared on reset if the bond delete
00190                 button is pressed during initialisation (the button is
00191                 defined as CFG_BLE_BOND_DELETE_BUTTON_NUM).
00192 
00193     @returns
00194 */
00195 /**************************************************************************/
00196 static error_t bond_manager_init(void)
00197 {
00198     ble_bondmngr_init_t bond_para = {0};
00199 
00200     ASSERT_STATUS ( pstorage_init());
00201 
00202     bond_para.flash_page_num_bond     = CFG_BLE_BOND_FLASH_PAGE_BOND;
00203     bond_para.flash_page_num_sys_attr = CFG_BLE_BOND_FLASH_PAGE_SYS_ATTR;
00204     //bond_para.bonds_delete            = boardButtonCheck(CFG_BLE_BOND_DELETE_BUTTON_NUM) ;
00205     bond_para.evt_handler   = NULL;
00206     bond_para.error_handler = service_error_callback;
00207 
00208     ASSERT_STATUS( ble_bondmngr_init( &bond_para ));
00209 
00210     /* Init radio active/inactive notification to flash (to only perform flashing when the radio is inactive) */
00211     //  ASSERT_STATUS( ble_radio_notification_init(NRF_APP_PRIORITY_HIGH,
00212     //                                             NRF_RADIO_NOTIFICATION_DISTANCE_4560US,
00213     //                                             ble_flash_on_radio_active_evt) );
00214 
00215     return ERROR_NONE;
00216 }
00217 #endif // #if NEED_BOND_MANAGER
00218 
00219 #if NEED_BOND_MANAGER /* disabled by default */
00220 /**************************************************************************/
00221 /*!
00222     @brief
00223     @param[in]  nrf_error
00224     @returns
00225 */
00226 /**************************************************************************/
00227 static void service_error_callback(uint32_t nrf_error)
00228 {
00229     ASSERT_STATUS_RET_VOID( nrf_error );
00230 }
00231 #endif // #if NEED_BOND_MANAGER
00232 
00233 /**************************************************************************/
00234 /*!
00235     @brief      Callback when an error occurs inside the SoftDevice
00236 
00237     @param[in]  line_num
00238     @param[in]  p-file_name
00239 
00240     @returns
00241 */
00242 /**************************************************************************/
00243 void assert_nrf_callback(uint16_t line_num, const uint8_t *p_file_name)
00244 {
00245     ASSERT(false, (void) 0);
00246 }
00247 
00248 /**************************************************************************/
00249 /*!
00250     @brief      Handler for general errors above the SoftDevice layer.
00251                 Typically we can' recover from this so we do a reset.
00252 
00253     @param[in]  error_code
00254     @param[in]  line_num
00255     @param[in]  p-file_name
00256 
00257     @returns
00258 */
00259 /**************************************************************************/
00260 void app_error_handler(uint32_t       error_code,
00261                        uint32_t       line_num,
00262                        const uint8_t *p_file_name)
00263 {
00264     ASSERT_STATUS_RET_VOID( error_code );
00265     NVIC_SystemReset();
00266 }