Diff: microbit/microbit-dal/nRF51822/source/btle/btle.cpp

Revision:

0:b9164b348919

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/microbit/microbit-dal/nRF51822/source/btle/btle.cpp	Mon Oct 17 12:41:20 2016 +0000
@@ -0,0 +1,264 @@
+/* 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"
+
+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 uint32_t gatt_table_size = BLE_GATTS_ATTR_TAB_SIZE_DEFAULT;
+
+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().
+ *
+ * In mbed OS, a callback for intern_softdevice_events_execute() is posted
+ * to the scheduler, which then executes in thread mode. In mbed-classic,
+ * event processing happens right-away in interrupt context (which is more
+ * risk-prone). In either case, the logic of event processing is identical.
+ */
+static uint32_t eventHandler()
+{
+#ifdef YOTTA_CFG_MBED_OS
+    minar::Scheduler::postCallback(intern_softdevice_events_execute);
+#else
+    intern_softdevice_events_execute();
+#endif
+
+    return NRF_SUCCESS;
+}
+
+error_t
+btle_set_gatt_table_size(uint32_t size)
+{
+    if (size >= BLE_GATTS_ATTR_TAB_SIZE_MIN)
+    {
+        gatt_table_size = size;
+        return ERROR_NONE;
+    }
+
+    return ERROR_INVALID_PARAM;
+}
+
+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, eventHandler);
+
+    // 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,
+            .attr_tab_size = gatt_table_size
+        }
+    };
+    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;
+            }
+
+            // Close all pending discoveries for this connection
+#if !defined(TARGET_MCU_NRF51_16K_S110) && !defined(TARGET_MCU_NRF51_32K_S110)
+            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();
+}
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