Oscar Ariza
BLE
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BLE_API
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Bluetooth Low Energy
Diff: ble/GattClient.h
- Revision:
- 711:b2e1a2660ec2
- Parent:
- 565:1d8aa4ad07fe
diff -r 77f6fc6999cd -r b2e1a2660ec2 ble/GattClient.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ble/GattClient.h Fri Jun 19 15:53:28 2015 +0100
@@ -0,0 +1,229 @@
+/* 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 __GATT_CLIENT_H__
+#define __GATT_CLIENT_H__
+
+#include "Gap.h"
+#include "GattAttribute.h"
+#include "ServiceDiscovery.h"
+
+#include "GattCallbackParamTypes.h"
+
+class GattClient {
+public:
+ typedef void (*ReadCallback_t)(const GattReadCallbackParams *params);
+
+ enum WriteOp_t {
+ GATT_OP_WRITE_REQ = 0x01, /**< Write Request. */
+ GATT_OP_WRITE_CMD = 0x02, /**< Write Command. */
+ };
+
+ typedef void (*WriteCallback_t)(const GattWriteCallbackParams *params);
+
+ /*
+ * The following functions are meant to be overridden in the platform-specific sub-class.
+ */
+public:
+ /**
+ * Launch service discovery. Once launched, service discovery will remain
+ * active with callbacks being issued back into the application for matching
+ * services/characteristics. isServiceDiscoveryActive() 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 terminateServiceDiscovery().
+ *
+ * @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.
+ *
+ * @note Providing NULL for the characteristic callback will result in
+ * characteristic discovery being skipped for each matching
+ * service. This allows for an inexpensive method to discover only
+ * services.
+ *
+ * @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)) {
+ return BLE_ERROR_NOT_IMPLEMENTED; /* default implementation; override this API if this capability is supported. */
+ }
+
+ /**
+ * Launch service discovery for services. Once launched, service discovery will remain
+ * active with service-callbacks being issued back into the application for matching
+ * services. isServiceDiscoveryActive() 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 terminateServiceDiscovery().
+ *
+ * @param connectionHandle
+ * Handle for the connection with the peer.
+ * @param sc
+ * This is the application callback for matching service. 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 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.
+ *
+ * @return
+ * BLE_ERROR_NONE if service discovery is launched successfully; else an appropriate error.
+ */
+ virtual ble_error_t discoverServices(Gap::Handle_t connectionHandle,
+ ServiceDiscovery::ServiceCallback_t callback,
+ const UUID &matchingServiceUUID = UUID::ShortUUIDBytes_t(BLE_UUID_UNKNOWN)) {
+ return BLE_ERROR_NOT_IMPLEMENTED; /* default implementation; override this API if this capability is supported. */
+ }
+
+ /**
+ * Launch service discovery for services. Once launched, service discovery will remain
+ * active with service-callbacks being issued back into the application for matching
+ * services. isServiceDiscoveryActive() 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 terminateServiceDiscovery().
+ *
+ * @param connectionHandle
+ * Handle for the connection with the peer.
+ * @param sc
+ * This is the application callback for matching service. 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 startHandle, endHandle
+ * Handle range within which to limit the search
+ *
+ * @return
+ * BLE_ERROR_NONE if service discovery is launched successfully; else an appropriate error.
+ */
+ virtual ble_error_t discoverServices(Gap::Handle_t connectionHandle,
+ ServiceDiscovery::ServiceCallback_t callback,
+ GattAttribute::Handle_t startHandle,
+ GattAttribute::Handle_t endHandle) {
+ return BLE_ERROR_NOT_IMPLEMENTED; /* default implementation; override this API if this capability is supported. */
+ }
+
+ /**
+ * Is service-discovery currently active?
+ */
+ virtual bool isServiceDiscoveryActive(void) const {
+ return false; /* default implementation; override this API if this capability is supported. */
+ }
+
+ /**
+ * Terminate an ongoing service-discovery. This should result in an
+ * invocation of the TerminationCallback if service-discovery is active.
+ */
+ virtual void terminateServiceDiscovery(void) {
+ /* default implementation; override this API if this capability is supported. */
+ }
+
+ /* Initiate a Gatt Client read procedure by attribute-handle. */
+ virtual ble_error_t read(Gap::Handle_t connHandle, GattAttribute::Handle_t attributeHandle, uint16_t offset) const {
+ return BLE_ERROR_NOT_IMPLEMENTED; /* default implementation; override this API if this capability is supported. */
+ }
+
+ /**
+ * Initiate a GATT Client write procedure.
+ *
+ * @param[in] cmd
+ * Command can be either a write-request (which generates a
+ * matching response from the peripheral), or a write-command,
+ * which doesn't require the connected peer to respond.
+ * @param[in] connHandle
+ * Connection handle.
+ * @param[in] attributeHandle
+ * handle for the target attribtue on the remote GATT server.
+ * @param[in] length
+ * length of the new value.
+ * @param[in] value
+ * new value being written.
+ */
+ 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 {
+ return BLE_ERROR_NOT_IMPLEMENTED; /* default implementation; override this API if this capability is supported. */
+ }
+
+ /**
+ * Setup callback for when serviceDiscovery terminates.
+ */
+ virtual void onServiceDiscoveryTermination(ServiceDiscovery::TerminationCallback_t callback) {
+ /* default implementation; override this API if this capability is supported. */
+ }
+
+protected:
+ GattClient() {
+ /* empty */
+ }
+
+private:
+ /* disallow copy and assignment */
+ GattClient(const GattClient &);
+ GattClient& operator=(const GattClient &);
+};
+
+#endif // ifndef __GATT_CLIENT_H__
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