Wang Xinglu / BLE_API

High level Bluetooth Low Energy API and radio abstraction layer

Dependencies:   nRF51822

Dependents:   LinkNode_LIS3DH

Fork of BLE_API by Bluetooth Low Energy

ble/GattClient.h@976:043b3bd94ee0, 2015-11-26 (annotated)

Committer:
rgrover1
Date:
Thu Nov 26 12:52:36 2015 +0000
Revision:
976:043b3bd94ee0
Parent:
970:b3e45745026d
Child:
986:5292837107a3
Synchronized with git rev 7de34342

Author: Rohit Grover

Merge pull request #109 from pan-/removePersistantCallbacks



Remove persistant callbacks

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rgrover1 716:11b41f651697 1 /* mbed Microcontroller Library
rgrover1 716:11b41f651697 2 * Copyright (c) 2006-2013 ARM Limited
rgrover1 716:11b41f651697 3 *
rgrover1 716:11b41f651697 4 * Licensed under the Apache License, Version 2.0 (the "License");
rgrover1 716:11b41f651697 5 * you may not use this file except in compliance with the License.
rgrover1 716:11b41f651697 6 * You may obtain a copy of the License at
rgrover1 716:11b41f651697 7 *
rgrover1 716:11b41f651697 8 * http://www.apache.org/licenses/LICENSE-2.0
rgrover1 716:11b41f651697 9 *
rgrover1 716:11b41f651697 10 * Unless required by applicable law or agreed to in writing, software
rgrover1 716:11b41f651697 11 * distributed under the License is distributed on an "AS IS" BASIS,
rgrover1 716:11b41f651697 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
rgrover1 716:11b41f651697 13 * See the License for the specific language governing permissions and
rgrover1 716:11b41f651697 14 * limitations under the License.
rgrover1 716:11b41f651697 15 */
rgrover1 716:11b41f651697 16
rgrover1 716:11b41f651697 17 #ifndef __GATT_CLIENT_H__
rgrover1 716:11b41f651697 18 #define __GATT_CLIENT_H__
rgrover1 716:11b41f651697 19
rgrover1 716:11b41f651697 20 #include "Gap.h"
rgrover1 716:11b41f651697 21 #include "GattAttribute.h"
rgrover1 716:11b41f651697 22 #include "ServiceDiscovery.h"
rgrover1 716:11b41f651697 23
rgrover1 716:11b41f651697 24 #include "GattCallbackParamTypes.h"
rgrover1 716:11b41f651697 25
rgrover1 976:043b3bd94ee0 26 #include "CallChainOfFunctionPointersWithContext.h"
rgrover1 976:043b3bd94ee0 27
rgrover1 716:11b41f651697 28 class GattClient {
rgrover1 716:11b41f651697 29 public:
rgrover1 976:043b3bd94ee0 30 typedef FunctionPointerWithContext<const GattReadCallbackParams*> ReadCallback_t;
rgrover1 976:043b3bd94ee0 31 typedef CallChainOfFunctionPointersWithContext<const GattReadCallbackParams*> ReadCallbackChain_t;
rgrover1 716:11b41f651697 32
rgrover1 716:11b41f651697 33 enum WriteOp_t {
rgrover1 937:4932e700daf2 34 GATT_OP_WRITE_REQ = 0x01, /**< Write request. */
rgrover1 937:4932e700daf2 35 GATT_OP_WRITE_CMD = 0x02, /**< Write command. */
rgrover1 716:11b41f651697 36 };
rgrover1 716:11b41f651697 37
rgrover1 976:043b3bd94ee0 38 typedef FunctionPointerWithContext<const GattWriteCallbackParams*> WriteCallback_t;
rgrover1 976:043b3bd94ee0 39 typedef CallChainOfFunctionPointersWithContext<const GattWriteCallbackParams*> WriteCallbackChain_t;
rgrover1 716:11b41f651697 40
rgrover1 976:043b3bd94ee0 41 typedef FunctionPointerWithContext<const GattHVXCallbackParams*> HVXCallback_t;
rgrover1 976:043b3bd94ee0 42 typedef CallChainOfFunctionPointersWithContext<const GattHVXCallbackParams*> HVXCallbackChain_t;
rgrover1 737:79d95f9b93be 43
rgrover1 716:11b41f651697 44 /*
rgrover1 716:11b41f651697 45 * The following functions are meant to be overridden in the platform-specific sub-class.
rgrover1 716:11b41f651697 46 */
rgrover1 716:11b41f651697 47 public:
rgrover1 716:11b41f651697 48 /**
rgrover1 728:997ba5e7b3b6 49 * Launch service discovery. Once launched, application callbacks will be
rgrover1 937:4932e700daf2 50 * invoked for matching services or characteristics. isServiceDiscoveryActive()
rgrover1 937:4932e700daf2 51 * can be used to determine status, and a termination callback (if one was set up)
rgrover1 937:4932e700daf2 52 * will be invoked at the end. Service discovery can be terminated prematurely,
rgrover1 937:4932e700daf2 53 * if needed, using terminateServiceDiscovery().
rgrover1 716:11b41f651697 54 *
rgrover1 716:11b41f651697 55 * @param connectionHandle
rgrover1 716:11b41f651697 56 * Handle for the connection with the peer.
rgrover1 716:11b41f651697 57 * @param sc
rgrover1 937:4932e700daf2 58 * This is the application callback for a matching service. Taken as
rgrover1 716:11b41f651697 59 * NULL by default. Note: service discovery may still be active
rgrover1 716:11b41f651697 60 * when this callback is issued; calling asynchronous BLE-stack
rgrover1 716:11b41f651697 61 * APIs from within this application callback might cause the
rgrover1 716:11b41f651697 62 * stack to abort service discovery. If this becomes an issue, it
rgrover1 937:4932e700daf2 63 * may be better to make a local copy of the discoveredService and
rgrover1 716:11b41f651697 64 * wait for service discovery to terminate before operating on the
rgrover1 716:11b41f651697 65 * service.
rgrover1 716:11b41f651697 66 * @param cc
rgrover1 937:4932e700daf2 67 * This is the application callback for a matching characteristic.
rgrover1 716:11b41f651697 68 * Taken as NULL by default. Note: service discovery may still be
rgrover1 716:11b41f651697 69 * active when this callback is issued; calling asynchronous
rgrover1 716:11b41f651697 70 * BLE-stack APIs from within this application callback might cause
rgrover1 716:11b41f651697 71 * the stack to abort service discovery. If this becomes an issue,
rgrover1 937:4932e700daf2 72 * it may be better to make a local copy of the discoveredCharacteristic
rgrover1 716:11b41f651697 73 * and wait for service discovery to terminate before operating on the
rgrover1 716:11b41f651697 74 * characteristic.
rgrover1 716:11b41f651697 75 * @param matchingServiceUUID
rgrover1 937:4932e700daf2 76 * UUID-based filter for specifying a service in which the application is
rgrover1 716:11b41f651697 77 * interested. By default it is set as the wildcard UUID_UNKNOWN,
rgrover1 716:11b41f651697 78 * in which case it matches all services. If characteristic-UUID
rgrover1 716:11b41f651697 79 * filter (below) is set to the wildcard value, then a service
rgrover1 716:11b41f651697 80 * callback will be invoked for the matching service (or for every
rgrover1 716:11b41f651697 81 * service if the service filter is a wildcard).
rgrover1 716:11b41f651697 82 * @param matchingCharacteristicUUIDIn
rgrover1 937:4932e700daf2 83 * UUID-based filter for specifying characteristic in which the application
rgrover1 716:11b41f651697 84 * is interested. By default it is set as the wildcard UUID_UKNOWN
rgrover1 716:11b41f651697 85 * to match against any characteristic. If both service-UUID
rgrover1 937:4932e700daf2 86 * filter and characteristic-UUID filter are used with non-wildcard
rgrover1 716:11b41f651697 87 * values, then only a single characteristic callback is
rgrover1 716:11b41f651697 88 * invoked for the matching characteristic.
rgrover1 716:11b41f651697 89 *
rgrover1 716:11b41f651697 90 * @note Using wildcard values for both service-UUID and characteristic-
rgrover1 937:4932e700daf2 91 * UUID will result in complete service discovery: callbacks being
rgrover1 716:11b41f651697 92 * called for every service and characteristic.
rgrover1 716:11b41f651697 93 *
rgrover1 716:11b41f651697 94 * @note Providing NULL for the characteristic callback will result in
rgrover1 716:11b41f651697 95 * characteristic discovery being skipped for each matching
rgrover1 716:11b41f651697 96 * service. This allows for an inexpensive method to discover only
rgrover1 716:11b41f651697 97 * services.
rgrover1 716:11b41f651697 98 *
rgrover1 716:11b41f651697 99 * @return
rgrover1 716:11b41f651697 100 * BLE_ERROR_NONE if service discovery is launched successfully; else an appropriate error.
rgrover1 716:11b41f651697 101 */
rgrover1 716:11b41f651697 102 virtual ble_error_t launchServiceDiscovery(Gap::Handle_t connectionHandle,
rgrover1 716:11b41f651697 103 ServiceDiscovery::ServiceCallback_t sc = NULL,
rgrover1 716:11b41f651697 104 ServiceDiscovery::CharacteristicCallback_t cc = NULL,
rgrover1 716:11b41f651697 105 const UUID &matchingServiceUUID = UUID::ShortUUIDBytes_t(BLE_UUID_UNKNOWN),
rgrover1 716:11b41f651697 106 const UUID &matchingCharacteristicUUIDIn = UUID::ShortUUIDBytes_t(BLE_UUID_UNKNOWN)) {
rgrover1 937:4932e700daf2 107 /* Avoid compiler warnings about unused variables. */
rgrover1 734:4872b70437ce 108 (void)connectionHandle;
rgrover1 734:4872b70437ce 109 (void)sc;
rgrover1 734:4872b70437ce 110 (void)cc;
rgrover1 734:4872b70437ce 111 (void)matchingServiceUUID;
rgrover1 734:4872b70437ce 112 (void)matchingCharacteristicUUIDIn;
rgrover1 734:4872b70437ce 113
rgrover1 937:4932e700daf2 114 return BLE_ERROR_NOT_IMPLEMENTED; /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 716:11b41f651697 115 }
rgrover1 716:11b41f651697 116
rgrover1 716:11b41f651697 117 /**
rgrover1 716:11b41f651697 118 * Launch service discovery for services. Once launched, service discovery will remain
rgrover1 716:11b41f651697 119 * active with service-callbacks being issued back into the application for matching
rgrover1 716:11b41f651697 120 * services. isServiceDiscoveryActive() can be used to
rgrover1 937:4932e700daf2 121 * determine status, and a termination callback (if set up) will be invoked
rgrover1 937:4932e700daf2 122 * at the end. Service discovery can be terminated prematurely, if needed,
rgrover1 716:11b41f651697 123 * using terminateServiceDiscovery().
rgrover1 716:11b41f651697 124 *
rgrover1 716:11b41f651697 125 * @param connectionHandle
rgrover1 716:11b41f651697 126 * Handle for the connection with the peer.
rgrover1 716:11b41f651697 127 * @param sc
rgrover1 937:4932e700daf2 128 * This is the application callback for a matching service. Note: service discovery may still be active
rgrover1 716:11b41f651697 129 * when this callback is issued; calling asynchronous BLE-stack
rgrover1 716:11b41f651697 130 * APIs from within this application callback might cause the
rgrover1 716:11b41f651697 131 * stack to abort service discovery. If this becomes an issue, it
rgrover1 937:4932e700daf2 132 * may be better to make a local copy of the discoveredService and
rgrover1 716:11b41f651697 133 * wait for service discovery to terminate before operating on the
rgrover1 716:11b41f651697 134 * service.
rgrover1 716:11b41f651697 135 * @param matchingServiceUUID
rgrover1 937:4932e700daf2 136 * UUID-based filter for specifying a service in which the application is
rgrover1 716:11b41f651697 137 * interested. By default it is set as the wildcard UUID_UNKNOWN,
rgrover1 716:11b41f651697 138 * in which case it matches all services.
rgrover1 716:11b41f651697 139 *
rgrover1 716:11b41f651697 140 * @return
rgrover1 716:11b41f651697 141 * BLE_ERROR_NONE if service discovery is launched successfully; else an appropriate error.
rgrover1 716:11b41f651697 142 */
rgrover1 716:11b41f651697 143 virtual ble_error_t discoverServices(Gap::Handle_t connectionHandle,
rgrover1 716:11b41f651697 144 ServiceDiscovery::ServiceCallback_t callback,
rgrover1 716:11b41f651697 145 const UUID &matchingServiceUUID = UUID::ShortUUIDBytes_t(BLE_UUID_UNKNOWN)) {
rgrover1 742:861ed7eb186d 146 return launchServiceDiscovery(connectionHandle, callback, NULL, matchingServiceUUID); /* We take advantage of the property
rgrover1 742:861ed7eb186d 147 * that providing NULL for the characteristic callback will result in
rgrover1 742:861ed7eb186d 148 * characteristic discovery being skipped for each matching
rgrover1 742:861ed7eb186d 149 * service. This allows for an inexpensive method to discover only
rgrover1 937:4932e700daf2 150 * services. Porters are free to override this. */
rgrover1 716:11b41f651697 151 }
rgrover1 716:11b41f651697 152
rgrover1 716:11b41f651697 153 /**
rgrover1 716:11b41f651697 154 * Launch service discovery for services. Once launched, service discovery will remain
rgrover1 716:11b41f651697 155 * active with service-callbacks being issued back into the application for matching
rgrover1 716:11b41f651697 156 * services. isServiceDiscoveryActive() can be used to
rgrover1 937:4932e700daf2 157 * determine status, and a termination callback (if set up) will be invoked
rgrover1 937:4932e700daf2 158 * at the end. Service discovery can be terminated prematurely, if needed,
rgrover1 716:11b41f651697 159 * using terminateServiceDiscovery().
rgrover1 716:11b41f651697 160 *
rgrover1 716:11b41f651697 161 * @param connectionHandle
rgrover1 716:11b41f651697 162 * Handle for the connection with the peer.
rgrover1 716:11b41f651697 163 * @param sc
rgrover1 937:4932e700daf2 164 * This is the application callback for a matching service. Note: service discovery may still be active
rgrover1 716:11b41f651697 165 * when this callback is issued; calling asynchronous BLE-stack
rgrover1 716:11b41f651697 166 * APIs from within this application callback might cause the
rgrover1 716:11b41f651697 167 * stack to abort service discovery. If this becomes an issue, it
rgrover1 937:4932e700daf2 168 * may be better to make a local copy of the discoveredService and
rgrover1 716:11b41f651697 169 * wait for service discovery to terminate before operating on the
rgrover1 716:11b41f651697 170 * service.
rgrover1 716:11b41f651697 171 * @param startHandle, endHandle
rgrover1 937:4932e700daf2 172 * Handle range within which to limit the search.
rgrover1 716:11b41f651697 173 *
rgrover1 716:11b41f651697 174 * @return
rgrover1 716:11b41f651697 175 * BLE_ERROR_NONE if service discovery is launched successfully; else an appropriate error.
rgrover1 716:11b41f651697 176 */
rgrover1 716:11b41f651697 177 virtual ble_error_t discoverServices(Gap::Handle_t connectionHandle,
rgrover1 716:11b41f651697 178 ServiceDiscovery::ServiceCallback_t callback,
rgrover1 716:11b41f651697 179 GattAttribute::Handle_t startHandle,
rgrover1 716:11b41f651697 180 GattAttribute::Handle_t endHandle) {
rgrover1 937:4932e700daf2 181 /* Avoid compiler warnings about unused variables. */
rgrover1 734:4872b70437ce 182 (void)connectionHandle;
rgrover1 734:4872b70437ce 183 (void)callback;
rgrover1 734:4872b70437ce 184 (void)startHandle;
rgrover1 734:4872b70437ce 185 (void)endHandle;
rgrover1 734:4872b70437ce 186
rgrover1 937:4932e700daf2 187 return BLE_ERROR_NOT_IMPLEMENTED; /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 716:11b41f651697 188 }
rgrover1 716:11b41f651697 189
rgrover1 716:11b41f651697 190 /**
rgrover1 716:11b41f651697 191 * Is service-discovery currently active?
rgrover1 716:11b41f651697 192 */
rgrover1 716:11b41f651697 193 virtual bool isServiceDiscoveryActive(void) const {
rgrover1 937:4932e700daf2 194 return false; /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 716:11b41f651697 195 }
rgrover1 716:11b41f651697 196
rgrover1 716:11b41f651697 197 /**
rgrover1 937:4932e700daf2 198 * Terminate an ongoing service discovery. This should result in an
rgrover1 937:4932e700daf2 199 * invocation of TerminationCallback if service-discovery is active.
rgrover1 716:11b41f651697 200 */
rgrover1 716:11b41f651697 201 virtual void terminateServiceDiscovery(void) {
rgrover1 937:4932e700daf2 202 /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 716:11b41f651697 203 }
rgrover1 716:11b41f651697 204
rgrover1 937:4932e700daf2 205 /* Initiate a GATT Client read procedure by attribute-handle. */
rgrover1 716:11b41f651697 206 virtual ble_error_t read(Gap::Handle_t connHandle, GattAttribute::Handle_t attributeHandle, uint16_t offset) const {
rgrover1 937:4932e700daf2 207 /* Avoid compiler warnings about unused variables. */
rgrover1 734:4872b70437ce 208 (void)connHandle;
rgrover1 734:4872b70437ce 209 (void)attributeHandle;
rgrover1 734:4872b70437ce 210 (void)offset;
rgrover1 734:4872b70437ce 211
rgrover1 937:4932e700daf2 212 return BLE_ERROR_NOT_IMPLEMENTED; /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 716:11b41f651697 213 }
rgrover1 716:11b41f651697 214
rgrover1 716:11b41f651697 215 /**
rgrover1 716:11b41f651697 216 * Initiate a GATT Client write procedure.
rgrover1 716:11b41f651697 217 *
rgrover1 716:11b41f651697 218 * @param[in] cmd
rgrover1 937:4932e700daf2 219 * Command can be either a write-request (which generates a
rgrover1 937:4932e700daf2 220 * matching response from the peripheral), or a write-command
rgrover1 937:4932e700daf2 221 * (which doesn't require the connected peer to respond).
rgrover1 716:11b41f651697 222 * @param[in] connHandle
rgrover1 716:11b41f651697 223 * Connection handle.
rgrover1 716:11b41f651697 224 * @param[in] attributeHandle
rgrover1 937:4932e700daf2 225 * Handle for the target attribtue on the remote GATT server.
rgrover1 716:11b41f651697 226 * @param[in] length
rgrover1 937:4932e700daf2 227 * Length of the new value.
rgrover1 716:11b41f651697 228 * @param[in] value
rgrover1 937:4932e700daf2 229 * New value being written.
rgrover1 716:11b41f651697 230 */
rgrover1 716:11b41f651697 231 virtual ble_error_t write(GattClient::WriteOp_t cmd,
rgrover1 716:11b41f651697 232 Gap::Handle_t connHandle,
rgrover1 716:11b41f651697 233 GattAttribute::Handle_t attributeHandle,
rgrover1 716:11b41f651697 234 size_t length,
rgrover1 716:11b41f651697 235 const uint8_t *value) const {
rgrover1 937:4932e700daf2 236 /* Avoid compiler warnings about unused variables. */
rgrover1 734:4872b70437ce 237 (void)cmd;
rgrover1 734:4872b70437ce 238 (void)connHandle;
rgrover1 734:4872b70437ce 239 (void)attributeHandle;
rgrover1 734:4872b70437ce 240 (void)length;
rgrover1 734:4872b70437ce 241 (void)value;
rgrover1 734:4872b70437ce 242
rgrover1 937:4932e700daf2 243 return BLE_ERROR_NOT_IMPLEMENTED; /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 728:997ba5e7b3b6 244 }
rgrover1 728:997ba5e7b3b6 245
rgrover1 728:997ba5e7b3b6 246 /* Event callback handlers. */
rgrover1 728:997ba5e7b3b6 247 public:
rgrover1 728:997ba5e7b3b6 248 /**
rgrover1 976:043b3bd94ee0 249 * Set up a callback for read response events.
rgrover1 976:043b3bd94ee0 250 * It is possible to remove registered callbacks using
rgrover1 976:043b3bd94ee0 251 * onDataRead().detach(callbackToRemove)
rgrover1 728:997ba5e7b3b6 252 */
rgrover1 728:997ba5e7b3b6 253 void onDataRead(ReadCallback_t callback) {
rgrover1 976:043b3bd94ee0 254 onDataReadCallbackChain.add(callback);
rgrover1 976:043b3bd94ee0 255 }
rgrover1 976:043b3bd94ee0 256
rgrover1 976:043b3bd94ee0 257 /**
rgrover1 976:043b3bd94ee0 258 * @brief provide access to the callchain of read callbacks
rgrover1 976:043b3bd94ee0 259 * It is possible to register callbacks using onDataRead().add(callback);
rgrover1 976:043b3bd94ee0 260 * It is possible to unregister callbacks using onDataRead().detach(callback)
rgrover1 976:043b3bd94ee0 261 * @return The read callbacks chain
rgrover1 976:043b3bd94ee0 262 */
rgrover1 976:043b3bd94ee0 263 ReadCallbackChain_t& onDataRead() {
rgrover1 976:043b3bd94ee0 264 return onDataReadCallbackChain;
rgrover1 728:997ba5e7b3b6 265 }
rgrover1 728:997ba5e7b3b6 266
rgrover1 728:997ba5e7b3b6 267 /**
rgrover1 937:4932e700daf2 268 * Set up a callback for write response events.
rgrover1 976:043b3bd94ee0 269 * It is possible to remove registered callbacks using
rgrover1 976:043b3bd94ee0 270 * onDataWritten().detach(callbackToRemove).
rgrover1 937:4932e700daf2 271 * @Note: Write commands (issued using writeWoResponse) don't generate a response.
rgrover1 728:997ba5e7b3b6 272 */
rgrover1 768:8914bea92690 273 void onDataWritten(WriteCallback_t callback) {
rgrover1 976:043b3bd94ee0 274 onDataWriteCallbackChain.add(callback);
rgrover1 976:043b3bd94ee0 275 }
rgrover1 976:043b3bd94ee0 276
rgrover1 976:043b3bd94ee0 277 /**
rgrover1 976:043b3bd94ee0 278 * @brief provide access to the callchain of data written callbacks
rgrover1 976:043b3bd94ee0 279 * It is possible to register callbacks using onDataWritten().add(callback);
rgrover1 976:043b3bd94ee0 280 * It is possible to unregister callbacks using onDataWritten().detach(callback)
rgrover1 976:043b3bd94ee0 281 * @return The data written callbacks chain
rgrover1 976:043b3bd94ee0 282 */
rgrover1 976:043b3bd94ee0 283 WriteCallbackChain_t& onDataWritten() {
rgrover1 976:043b3bd94ee0 284 return onDataWriteCallbackChain;
rgrover1 768:8914bea92690 285 }
rgrover1 768:8914bea92690 286
rgrover1 768:8914bea92690 287 /**
rgrover1 937:4932e700daf2 288 * Set up a callback for write response events.
rgrover1 937:4932e700daf2 289 * @Note: Write commands (issued using writeWoResponse) don't generate a response.
rgrover1 768:8914bea92690 290 *
rgrover1 768:8914bea92690 291 * @note: This API is now *deprecated* and will be dropped in the future.
rgrover1 768:8914bea92690 292 * Please use onDataWritten() instead.
rgrover1 768:8914bea92690 293 */
rgrover1 728:997ba5e7b3b6 294 void onDataWrite(WriteCallback_t callback) {
rgrover1 768:8914bea92690 295 onDataWritten(callback);
rgrover1 720:ce8a760a4504 296 }
rgrover1 720:ce8a760a4504 297
rgrover1 716:11b41f651697 298 /**
rgrover1 937:4932e700daf2 299 * Set up a callback for when serviceDiscovery terminates.
rgrover1 716:11b41f651697 300 */
rgrover1 716:11b41f651697 301 virtual void onServiceDiscoveryTermination(ServiceDiscovery::TerminationCallback_t callback) {
rgrover1 937:4932e700daf2 302 (void)callback; /* Avoid compiler warnings about ununsed variables. */
rgrover1 734:4872b70437ce 303
rgrover1 937:4932e700daf2 304 /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 716:11b41f651697 305 }
rgrover1 716:11b41f651697 306
rgrover1 737:79d95f9b93be 307 /**
rgrover1 937:4932e700daf2 308 * Set up a callback for when the GATT client receives an update event
rgrover1 937:4932e700daf2 309 * corresponding to a change in the value of a characteristic on the remote
rgrover1 937:4932e700daf2 310 * GATT server.
rgrover1 976:043b3bd94ee0 311 * It is possible to remove registered callbacks using onHVX().detach(callbackToRemove).
rgrover1 737:79d95f9b93be 312 */
rgrover1 737:79d95f9b93be 313 void onHVX(HVXCallback_t callback) {
rgrover1 976:043b3bd94ee0 314 onHVXCallbackChain.add(callback);
rgrover1 976:043b3bd94ee0 315 }
rgrover1 976:043b3bd94ee0 316
rgrover1 976:043b3bd94ee0 317
rgrover1 976:043b3bd94ee0 318 /**
rgrover1 976:043b3bd94ee0 319 * @brief provide access to the callchain of HVX callbacks
rgrover1 976:043b3bd94ee0 320 * It is possible to register callbacks using onHVX().add(callback);
rgrover1 976:043b3bd94ee0 321 * It is possible to unregister callbacks using onHVX().detach(callback)
rgrover1 976:043b3bd94ee0 322 * @return The HVX callbacks chain
rgrover1 976:043b3bd94ee0 323 */
rgrover1 976:043b3bd94ee0 324 HVXCallbackChain_t& onHVX() {
rgrover1 976:043b3bd94ee0 325 return onHVXCallbackChain;
rgrover1 737:79d95f9b93be 326 }
rgrover1 737:79d95f9b93be 327
rgrover1 716:11b41f651697 328 protected:
rgrover1 716:11b41f651697 329 GattClient() {
rgrover1 937:4932e700daf2 330 /* Empty */
rgrover1 716:11b41f651697 331 }
rgrover1 716:11b41f651697 332
rgrover1 728:997ba5e7b3b6 333 /* Entry points for the underlying stack to report events back to the user. */
rgrover1 728:997ba5e7b3b6 334 public:
rgrover1 728:997ba5e7b3b6 335 void processReadResponse(const GattReadCallbackParams *params) {
rgrover1 976:043b3bd94ee0 336 onDataReadCallbackChain(params);
rgrover1 728:997ba5e7b3b6 337 }
rgrover1 728:997ba5e7b3b6 338
rgrover1 728:997ba5e7b3b6 339 void processWriteResponse(const GattWriteCallbackParams *params) {
rgrover1 976:043b3bd94ee0 340 onDataWriteCallbackChain(params);
rgrover1 728:997ba5e7b3b6 341 }
rgrover1 728:997ba5e7b3b6 342
rgrover1 737:79d95f9b93be 343 void processHVXEvent(const GattHVXCallbackParams *params) {
rgrover1 976:043b3bd94ee0 344 if (onHVXCallbackChain) {
rgrover1 976:043b3bd94ee0 345 onHVXCallbackChain(params);
rgrover1 737:79d95f9b93be 346 }
rgrover1 737:79d95f9b93be 347 }
rgrover1 737:79d95f9b93be 348
rgrover1 728:997ba5e7b3b6 349 protected:
rgrover1 976:043b3bd94ee0 350 ReadCallbackChain_t onDataReadCallbackChain;
rgrover1 976:043b3bd94ee0 351 WriteCallbackChain_t onDataWriteCallbackChain;
rgrover1 976:043b3bd94ee0 352 HVXCallbackChain_t onHVXCallbackChain;
rgrover1 728:997ba5e7b3b6 353
rgrover1 716:11b41f651697 354 private:
rgrover1 937:4932e700daf2 355 /* Disallow copy and assignment. */
rgrover1 716:11b41f651697 356 GattClient(const GattClient &);
rgrover1 716:11b41f651697 357 GattClient& operator=(const GattClient &);
rgrover1 716:11b41f651697 358 };
rgrover1 716:11b41f651697 359
rgrover1 716:11b41f651697 360 #endif // ifndef __GATT_CLIENT_H__