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nRF51GattClient.h
- Committer:
- rgrover1
- Date:
- 2015-06-19
- Revision:
- 337:3d8b3bfe22e1
- Parent:
- 334:5dcd58729c5b
- Child:
- 339:e5e2157e8b44
File content as of revision 337:3d8b3bfe22e1:
/* 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. */ #ifndef __NRF51822_GATT_CLIENT_H__ #define __NRF51822_GATT_CLIENT_H__ #include "GattClient.h" #include "nRFServiceDiscovery.h" class nRF51GattClient : public GattClient { public: static nRF51GattClient &getInstance(); /** * Launch service discovery. Once launched, service discovery will remain * active with callbacks being issued back into the application for matching * services/characteristics. isActive() can be used to determine status; and * a termination callback (if setup) will be invoked at the end. Service * discovery can be terminated prematurely if needed using terminate(). * * @param connectionHandle * Handle for the connection with the peer. * @param sc * This is the application callback for matching service. Taken as * NULL by default. Note: service discovery may still be active * when this callback is issued; calling asynchronous BLE-stack * APIs from within this application callback might cause the * stack to abort service discovery. If this becomes an issue, it * may be better to make local copy of the discoveredService and * wait for service discovery to terminate before operating on the * service. * @param cc * This is the application callback for matching characteristic. * Taken as NULL by default. Note: service discovery may still be * active when this callback is issued; calling asynchronous * BLE-stack APIs from within this application callback might cause * the stack to abort service discovery. If this becomes an issue, * it may be better to make local copy of the discoveredCharacteristic * and wait for service discovery to terminate before operating on the * characteristic. * @param matchingServiceUUID * UUID based filter for specifying a service in which the application is * interested. By default it is set as the wildcard UUID_UNKNOWN, * in which case it matches all services. If characteristic-UUID * filter (below) is set to the wildcard value, then a service * callback will be invoked for the matching service (or for every * service if the service filter is a wildcard). * @param matchingCharacteristicUUIDIn * UUID based filter for specifying characteristic in which the application * is interested. By default it is set as the wildcard UUID_UKNOWN * to match against any characteristic. If both service-UUID * filter and characteristic-UUID filter are used with non- wildcard * values, then only a single characteristic callback is * invoked for the matching characteristic. * * @Note Using wildcard values for both service-UUID and characteristic- * UUID will result in complete service discovery--callbacks being * called for every service and characteristic. * * @return * BLE_ERROR_NONE if service discovery is launched successfully; else an appropriate error. */ virtual ble_error_t launchServiceDiscovery(Gap::Handle_t connectionHandle, ServiceDiscovery::ServiceCallback_t sc = NULL, ServiceDiscovery::CharacteristicCallback_t cc = NULL, const UUID &matchingServiceUUID = UUID::ShortUUIDBytes_t(BLE_UUID_UNKNOWN), const UUID &matchingCharacteristicUUIDIn = UUID::ShortUUIDBytes_t(BLE_UUID_UNKNOWN)); virtual void onServiceDiscoveryTermination(ServiceDiscovery::TerminationCallback_t callback) { discovery.onTermination(callback); } /** * Is service-discovery currently active? */ virtual bool isServiceDiscoveryActive(void) const { return discovery.isActive(); } /** * Terminate an ongoing service-discovery. This should result in an * invocation of the TerminationCallback if service-discovery is active. */ virtual void terminateServiceDiscovery(void) { discovery.terminate(); } virtual ble_error_t read(Gap::Handle_t connHandle, GattAttribute::Handle_t attributeHandle, uint16_t offset) const { uint32_t rc = sd_ble_gattc_read(connHandle, attributeHandle, offset); if (rc == NRF_SUCCESS) { return BLE_ERROR_NONE; } switch (rc) { case NRF_ERROR_BUSY: return BLE_STACK_BUSY; case BLE_ERROR_INVALID_CONN_HANDLE: case NRF_ERROR_INVALID_STATE: case NRF_ERROR_INVALID_ADDR: default: return BLE_ERROR_INVALID_STATE; } } virtual ble_error_t write(GattClient::WriteOp_t cmd, Gap::Handle_t connHandle, GattAttribute::Handle_t attributeHandle, size_t length, const uint8_t *value) const { ble_gattc_write_params_t writeParams = { .write_op = cmd, // .flags = 0, .handle = attributeHandle, .offset = 0, .len = length, .p_value = const_cast<uint8_t *>(value), }; uint32_t rc = sd_ble_gattc_write(connHandle, &writeParams); if (rc == NRF_SUCCESS) { return BLE_ERROR_NONE; } switch (rc) { case NRF_ERROR_BUSY: return BLE_STACK_BUSY; case BLE_ERROR_NO_TX_BUFFERS: return BLE_ERROR_NO_MEM; case BLE_ERROR_INVALID_CONN_HANDLE: case NRF_ERROR_INVALID_STATE: case NRF_ERROR_INVALID_ADDR: default: return BLE_ERROR_INVALID_STATE; } } public: nRF51GattClient() : discovery(this) { /* empty */ } friend void bleGattcEventHandler(const ble_evt_t *p_ble_evt); private: nRF51GattClient(const nRF51GattClient &); const nRF51GattClient& operator=(const nRF51GattClient &); private: nRFServiceDiscovery discovery; }; #endif // ifndef __NRF51822_GATT_CLIENT_H__