Nordic stack and drivers for the mbed BLE API
Dependents: Sensen-classic-v8-IAQ_copy_4
Fork of nRF51822 by
Diff: TARGET_MCU_NRF51822/source/btle/btle.cpp
- Revision:
- 638:c90ae1400bf2
diff -r f7faad332abc -r c90ae1400bf2 TARGET_MCU_NRF51822/source/btle/btle.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TARGET_MCU_NRF51822/source/btle/btle.cpp Wed Sep 14 14:39:43 2016 +0100 @@ -0,0 +1,248 @@ +/* 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 "btle.h" + +#include "ble_flash.h" +#include "ble_conn_params.h" + +#include "btle_gap.h" +#include "btle_advertising.h" +#include "custom/custom_helper.h" + +#include "ble/GapEvents.h" +#include "nRF5xn.h" + +extern "C" { +#include "pstorage.h" +#include "device_manager.h" +#include "softdevice_handler.h" +#include "ble_stack_handler_types.h" +} + +#include "ble_hci.h" +#include "btle_discovery.h" + +#include "nRF5xGattClient.h" +#include "nRF5xServiceDiscovery.h" +#include "nRF5xCharacteristicDescriptorDiscoverer.h" + +bool isEventsSignaled = false; + +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); + +static void btle_handler(ble_evt_t *p_ble_evt); + +static void sys_evt_dispatch(uint32_t sys_evt) +{ + pstorage_sys_event_handler(sys_evt); +} + +/** + * This function is called in interrupt context to handle BLE events; i.e. pull + * system and user events out of the pending events-queue of the BLE stack. The + * BLE stack signals the availability of events by the triggering the SWI2 + * interrupt, which forwards the handling to this function. + * + * The event processing loop is implemented in intern_softdevice_events_execute(). + * + * This function will signal to the user code by calling signalEventsToProcess + * that their is events to process and BLE::processEvents should be called. + */ +static uint32_t signalEvent() +{ + if(isEventsSignaled == false) { + isEventsSignaled = true; + nRF5xn::Instance(BLE::DEFAULT_INSTANCE).signalEventsToProcess(BLE::DEFAULT_INSTANCE); + } + return NRF_SUCCESS; +} + +error_t btle_init(void) +{ + nrf_clock_lfclksrc_t clockSource; + if (NRF_CLOCK->LFCLKSRC & (CLOCK_LFCLKSRC_SRC_Xtal << CLOCK_LFCLKSRC_SRC_Pos)) { + clockSource = NRF_CLOCK_LFCLKSRC_XTAL_20_PPM; + } else { + clockSource = NRF_CLOCK_LFCLKSRC_RC_250_PPM_4000MS_CALIBRATION; + } + SOFTDEVICE_HANDLER_INIT(clockSource, signalEvent); + + // 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)); + + return btle_gap_init(); +} + +static void btle_handler(ble_evt_t *p_ble_evt) +{ + /* Library service handlers */ +#if SDK_CONN_PARAMS_MODULE_ENABLE + ble_conn_params_on_ble_evt(p_ble_evt); +#endif + + dm_ble_evt_handler(p_ble_evt); + +#if !defined(TARGET_MCU_NRF51_16K_S110) && !defined(TARGET_MCU_NRF51_32K_S110) + bleGattcEventHandler(p_ble_evt); +#endif + + nRF5xn &ble = nRF5xn::Instance(BLE::DEFAULT_INSTANCE); + nRF5xGap &gap = (nRF5xGap &) ble.getGap(); + nRF5xGattServer &gattServer = (nRF5xGattServer &) ble.getGattServer(); + nRF5xSecurityManager &securityManager = (nRF5xSecurityManager &) ble.getSecurityManager(); + + /* 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; +#if defined(TARGET_MCU_NRF51_16K_S110) || defined(TARGET_MCU_NRF51_32K_S110) + /* Only peripheral role is supported by S110 */ + Gap::Role_t role = Gap::PERIPHERAL; +#else + Gap::Role_t role = static_cast<Gap::Role_t>(p_ble_evt->evt.gap_evt.params.connected.role); +#endif + gap.setConnectionHandle(handle); + const Gap::ConnectionParams_t *params = reinterpret_cast<Gap::ConnectionParams_t *>(&(p_ble_evt->evt.gap_evt.params.connected.conn_params)); + const ble_gap_addr_t *peer = &p_ble_evt->evt.gap_evt.params.connected.peer_addr; + const ble_gap_addr_t *own = &p_ble_evt->evt.gap_evt.params.connected.own_addr; + gap.processConnectionEvent(handle, + role, + static_cast<BLEProtocol::AddressType_t>(peer->addr_type), peer->addr, + static_cast<BLEProtocol::AddressType_t>(own->addr_type), own->addr, + 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 + gap.setConnectionHandle (BLE_CONN_HANDLE_INVALID); + + 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; + } + +#if !defined(TARGET_MCU_NRF51_16K_S110) && !defined(TARGET_MCU_NRF51_32K_S110) + // Close all pending discoveries for this connection + nRF5xGattClient& gattClient = ble.getGattClient(); + gattClient.characteristicDescriptorDiscoverer().terminate(handle, BLE_ERROR_INVALID_STATE); + gattClient.discovery().terminate(handle); +#endif + + gap.processDisconnectionEvent(handle, reason); + break; + } + + case BLE_GAP_EVT_PASSKEY_DISPLAY: + securityManager.processPasskeyDisplayEvent(p_ble_evt->evt.gap_evt.conn_handle, p_ble_evt->evt.gap_evt.params.passkey_display.passkey); + break; + + case BLE_GAP_EVT_TIMEOUT: + gap.processTimeoutEvent(static_cast<Gap::TimeoutSource_t>(p_ble_evt->evt.gap_evt.params.timeout.src)); + 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; + + case BLE_GAP_EVT_ADV_REPORT: { + const ble_gap_evt_adv_report_t *advReport = &p_ble_evt->evt.gap_evt.params.adv_report; + gap.processAdvertisementReport(advReport->peer_addr.addr, + advReport->rssi, + advReport->scan_rsp, + static_cast<GapAdvertisingParams::AdvertisingType_t>(advReport->type), + advReport->dlen, + advReport->data); + break; + } + + default: + break; + } + + gattServer.hwCallback(p_ble_evt); +} + +/*! @brief Callback when an error occurs inside the SoftDevice */ +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. +*/ +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(); +}