Marco Ferreira / BLE_API

just a fork

Fork of BLE_API by Bluetooth Low Energy

ble/GattClient.h@1110:0a797e141266, 2016-01-11 (annotated)

Committer:
vcoubard
Date:
Mon Jan 11 08:51:58 2016 +0000
Revision:
1110:0a797e141266
Parent:
1090:148d8b9b56a5
Child:
1111:30326e58c830
Synchronized with git rev 5caca671

Author: Vincent Coubard

Merge branch 'develop' of https://github.com/ARMmbed/ble into descriptorDiscovery

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"
vcoubard 1110:0a797e141266 23 #include "CharacteristicDescriptorDiscovery.h"
rgrover1 716:11b41f651697 24
rgrover1 716:11b41f651697 25 #include "GattCallbackParamTypes.h"
rgrover1 716:11b41f651697 26
vcoubard 1052:b55e1ad3e1b3 27 #include "CallChainOfFunctionPointersWithContext.h"
vcoubard 1052:b55e1ad3e1b3 28
rgrover1 716:11b41f651697 29 class GattClient {
rgrover1 716:11b41f651697 30 public:
vcoubard 1052:b55e1ad3e1b3 31 typedef FunctionPointerWithContext<const GattReadCallbackParams*> ReadCallback_t;
vcoubard 1052:b55e1ad3e1b3 32 typedef CallChainOfFunctionPointersWithContext<const GattReadCallbackParams*> ReadCallbackChain_t;
rgrover1 716:11b41f651697 33
rgrover1 716:11b41f651697 34 enum WriteOp_t {
vcoubard 1048:efb29faf12fc 35 GATT_OP_WRITE_REQ = 0x01, /**< Write request. */
vcoubard 1048:efb29faf12fc 36 GATT_OP_WRITE_CMD = 0x02, /**< Write command. */
rgrover1 716:11b41f651697 37 };
rgrover1 716:11b41f651697 38
vcoubard 1052:b55e1ad3e1b3 39 typedef FunctionPointerWithContext<const GattWriteCallbackParams*> WriteCallback_t;
vcoubard 1052:b55e1ad3e1b3 40 typedef CallChainOfFunctionPointersWithContext<const GattWriteCallbackParams*> WriteCallbackChain_t;
rgrover1 716:11b41f651697 41
vcoubard 1052:b55e1ad3e1b3 42 typedef FunctionPointerWithContext<const GattHVXCallbackParams*> HVXCallback_t;
vcoubard 1052:b55e1ad3e1b3 43 typedef CallChainOfFunctionPointersWithContext<const GattHVXCallbackParams*> HVXCallbackChain_t;
rgrover1 737:79d95f9b93be 44
vcoubard 1090:148d8b9b56a5 45 typedef FunctionPointerWithContext<const GattClient *> GattClientShutdownCallback_t;
vcoubard 1090:148d8b9b56a5 46 typedef CallChainOfFunctionPointersWithContext<const GattClient *> GattClientShutdownCallbackChain_t;
vcoubard 1090:148d8b9b56a5 47
rgrover1 716:11b41f651697 48 /*
rgrover1 716:11b41f651697 49 * The following functions are meant to be overridden in the platform-specific sub-class.
rgrover1 716:11b41f651697 50 */
rgrover1 716:11b41f651697 51 public:
rgrover1 716:11b41f651697 52 /**
rgrover1 728:997ba5e7b3b6 53 * Launch service discovery. Once launched, application callbacks will be
vcoubard 1048:efb29faf12fc 54 * invoked for matching services or characteristics. isServiceDiscoveryActive()
vcoubard 1048:efb29faf12fc 55 * can be used to determine status, and a termination callback (if one was set up)
vcoubard 1048:efb29faf12fc 56 * will be invoked at the end. Service discovery can be terminated prematurely,
vcoubard 1048:efb29faf12fc 57 * if needed, using terminateServiceDiscovery().
rgrover1 716:11b41f651697 58 *
rgrover1 716:11b41f651697 59 * @param connectionHandle
rgrover1 716:11b41f651697 60 * Handle for the connection with the peer.
rgrover1 716:11b41f651697 61 * @param sc
vcoubard 1048:efb29faf12fc 62 * This is the application callback for a matching service. Taken as
rgrover1 716:11b41f651697 63 * NULL by default. Note: service discovery may still be active
rgrover1 716:11b41f651697 64 * when this callback is issued; calling asynchronous BLE-stack
rgrover1 716:11b41f651697 65 * APIs from within this application callback might cause the
rgrover1 716:11b41f651697 66 * stack to abort service discovery. If this becomes an issue, it
vcoubard 1048:efb29faf12fc 67 * may be better to make a local copy of the discoveredService and
rgrover1 716:11b41f651697 68 * wait for service discovery to terminate before operating on the
rgrover1 716:11b41f651697 69 * service.
rgrover1 716:11b41f651697 70 * @param cc
vcoubard 1048:efb29faf12fc 71 * This is the application callback for a matching characteristic.
rgrover1 716:11b41f651697 72 * Taken as NULL by default. Note: service discovery may still be
rgrover1 716:11b41f651697 73 * active when this callback is issued; calling asynchronous
rgrover1 716:11b41f651697 74 * BLE-stack APIs from within this application callback might cause
rgrover1 716:11b41f651697 75 * the stack to abort service discovery. If this becomes an issue,
vcoubard 1048:efb29faf12fc 76 * it may be better to make a local copy of the discoveredCharacteristic
rgrover1 716:11b41f651697 77 * and wait for service discovery to terminate before operating on the
rgrover1 716:11b41f651697 78 * characteristic.
rgrover1 716:11b41f651697 79 * @param matchingServiceUUID
vcoubard 1048:efb29faf12fc 80 * UUID-based filter for specifying a service in which the application is
rgrover1 716:11b41f651697 81 * interested. By default it is set as the wildcard UUID_UNKNOWN,
rgrover1 716:11b41f651697 82 * in which case it matches all services. If characteristic-UUID
rgrover1 716:11b41f651697 83 * filter (below) is set to the wildcard value, then a service
rgrover1 716:11b41f651697 84 * callback will be invoked for the matching service (or for every
rgrover1 716:11b41f651697 85 * service if the service filter is a wildcard).
rgrover1 716:11b41f651697 86 * @param matchingCharacteristicUUIDIn
vcoubard 1048:efb29faf12fc 87 * UUID-based filter for specifying characteristic in which the application
rgrover1 716:11b41f651697 88 * is interested. By default it is set as the wildcard UUID_UKNOWN
rgrover1 716:11b41f651697 89 * to match against any characteristic. If both service-UUID
vcoubard 1048:efb29faf12fc 90 * filter and characteristic-UUID filter are used with non-wildcard
rgrover1 716:11b41f651697 91 * values, then only a single characteristic callback is
rgrover1 716:11b41f651697 92 * invoked for the matching characteristic.
rgrover1 716:11b41f651697 93 *
rgrover1 716:11b41f651697 94 * @note Using wildcard values for both service-UUID and characteristic-
vcoubard 1048:efb29faf12fc 95 * UUID will result in complete service discovery: callbacks being
rgrover1 716:11b41f651697 96 * called for every service and characteristic.
rgrover1 716:11b41f651697 97 *
rgrover1 716:11b41f651697 98 * @note Providing NULL for the characteristic callback will result in
rgrover1 716:11b41f651697 99 * characteristic discovery being skipped for each matching
rgrover1 716:11b41f651697 100 * service. This allows for an inexpensive method to discover only
rgrover1 716:11b41f651697 101 * services.
rgrover1 716:11b41f651697 102 *
rgrover1 716:11b41f651697 103 * @return
rgrover1 716:11b41f651697 104 * BLE_ERROR_NONE if service discovery is launched successfully; else an appropriate error.
rgrover1 716:11b41f651697 105 */
rgrover1 716:11b41f651697 106 virtual ble_error_t launchServiceDiscovery(Gap::Handle_t connectionHandle,
rgrover1 716:11b41f651697 107 ServiceDiscovery::ServiceCallback_t sc = NULL,
rgrover1 716:11b41f651697 108 ServiceDiscovery::CharacteristicCallback_t cc = NULL,
rgrover1 716:11b41f651697 109 const UUID &matchingServiceUUID = UUID::ShortUUIDBytes_t(BLE_UUID_UNKNOWN),
rgrover1 716:11b41f651697 110 const UUID &matchingCharacteristicUUIDIn = UUID::ShortUUIDBytes_t(BLE_UUID_UNKNOWN)) {
vcoubard 1048:efb29faf12fc 111 /* Avoid compiler warnings about unused variables. */
rgrover1 734:4872b70437ce 112 (void)connectionHandle;
rgrover1 734:4872b70437ce 113 (void)sc;
rgrover1 734:4872b70437ce 114 (void)cc;
rgrover1 734:4872b70437ce 115 (void)matchingServiceUUID;
rgrover1 734:4872b70437ce 116 (void)matchingCharacteristicUUIDIn;
rgrover1 734:4872b70437ce 117
vcoubard 1048:efb29faf12fc 118 return BLE_ERROR_NOT_IMPLEMENTED; /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 716:11b41f651697 119 }
rgrover1 716:11b41f651697 120
rgrover1 716:11b41f651697 121 /**
rgrover1 716:11b41f651697 122 * Launch service discovery for services. Once launched, service discovery will remain
rgrover1 716:11b41f651697 123 * active with service-callbacks being issued back into the application for matching
rgrover1 716:11b41f651697 124 * services. isServiceDiscoveryActive() can be used to
vcoubard 1048:efb29faf12fc 125 * determine status, and a termination callback (if set up) will be invoked
vcoubard 1048:efb29faf12fc 126 * at the end. Service discovery can be terminated prematurely, if needed,
rgrover1 716:11b41f651697 127 * using terminateServiceDiscovery().
rgrover1 716:11b41f651697 128 *
rgrover1 716:11b41f651697 129 * @param connectionHandle
rgrover1 716:11b41f651697 130 * Handle for the connection with the peer.
rgrover1 716:11b41f651697 131 * @param sc
vcoubard 1048:efb29faf12fc 132 * This is the application callback for a matching service. Note: service discovery may still be active
rgrover1 716:11b41f651697 133 * when this callback is issued; calling asynchronous BLE-stack
rgrover1 716:11b41f651697 134 * APIs from within this application callback might cause the
rgrover1 716:11b41f651697 135 * stack to abort service discovery. If this becomes an issue, it
vcoubard 1048:efb29faf12fc 136 * may be better to make a local copy of the discoveredService and
rgrover1 716:11b41f651697 137 * wait for service discovery to terminate before operating on the
rgrover1 716:11b41f651697 138 * service.
rgrover1 716:11b41f651697 139 * @param matchingServiceUUID
vcoubard 1048:efb29faf12fc 140 * UUID-based filter for specifying a service in which the application is
rgrover1 716:11b41f651697 141 * interested. By default it is set as the wildcard UUID_UNKNOWN,
rgrover1 716:11b41f651697 142 * in which case it matches all services.
rgrover1 716:11b41f651697 143 *
rgrover1 716:11b41f651697 144 * @return
rgrover1 716:11b41f651697 145 * BLE_ERROR_NONE if service discovery is launched successfully; else an appropriate error.
rgrover1 716:11b41f651697 146 */
rgrover1 716:11b41f651697 147 virtual ble_error_t discoverServices(Gap::Handle_t connectionHandle,
rgrover1 716:11b41f651697 148 ServiceDiscovery::ServiceCallback_t callback,
rgrover1 716:11b41f651697 149 const UUID &matchingServiceUUID = UUID::ShortUUIDBytes_t(BLE_UUID_UNKNOWN)) {
rgrover1 742:861ed7eb186d 150 return launchServiceDiscovery(connectionHandle, callback, NULL, matchingServiceUUID); /* We take advantage of the property
rgrover1 742:861ed7eb186d 151 * that providing NULL for the characteristic callback will result in
rgrover1 742:861ed7eb186d 152 * characteristic discovery being skipped for each matching
rgrover1 742:861ed7eb186d 153 * service. This allows for an inexpensive method to discover only
vcoubard 1048:efb29faf12fc 154 * services. Porters are free to override this. */
rgrover1 716:11b41f651697 155 }
rgrover1 716:11b41f651697 156
rgrover1 716:11b41f651697 157 /**
rgrover1 716:11b41f651697 158 * Launch service discovery for services. Once launched, service discovery will remain
rgrover1 716:11b41f651697 159 * active with service-callbacks being issued back into the application for matching
rgrover1 716:11b41f651697 160 * services. isServiceDiscoveryActive() can be used to
vcoubard 1048:efb29faf12fc 161 * determine status, and a termination callback (if set up) will be invoked
vcoubard 1048:efb29faf12fc 162 * at the end. Service discovery can be terminated prematurely, if needed,
rgrover1 716:11b41f651697 163 * using terminateServiceDiscovery().
rgrover1 716:11b41f651697 164 *
rgrover1 716:11b41f651697 165 * @param connectionHandle
rgrover1 716:11b41f651697 166 * Handle for the connection with the peer.
rgrover1 716:11b41f651697 167 * @param sc
vcoubard 1048:efb29faf12fc 168 * This is the application callback for a matching service. Note: service discovery may still be active
rgrover1 716:11b41f651697 169 * when this callback is issued; calling asynchronous BLE-stack
rgrover1 716:11b41f651697 170 * APIs from within this application callback might cause the
rgrover1 716:11b41f651697 171 * stack to abort service discovery. If this becomes an issue, it
vcoubard 1048:efb29faf12fc 172 * may be better to make a local copy of the discoveredService and
rgrover1 716:11b41f651697 173 * wait for service discovery to terminate before operating on the
rgrover1 716:11b41f651697 174 * service.
rgrover1 716:11b41f651697 175 * @param startHandle, endHandle
vcoubard 1048:efb29faf12fc 176 * Handle range within which to limit the search.
rgrover1 716:11b41f651697 177 *
rgrover1 716:11b41f651697 178 * @return
rgrover1 716:11b41f651697 179 * BLE_ERROR_NONE if service discovery is launched successfully; else an appropriate error.
rgrover1 716:11b41f651697 180 */
rgrover1 716:11b41f651697 181 virtual ble_error_t discoverServices(Gap::Handle_t connectionHandle,
rgrover1 716:11b41f651697 182 ServiceDiscovery::ServiceCallback_t callback,
rgrover1 716:11b41f651697 183 GattAttribute::Handle_t startHandle,
rgrover1 716:11b41f651697 184 GattAttribute::Handle_t endHandle) {
vcoubard 1048:efb29faf12fc 185 /* Avoid compiler warnings about unused variables. */
rgrover1 734:4872b70437ce 186 (void)connectionHandle;
rgrover1 734:4872b70437ce 187 (void)callback;
rgrover1 734:4872b70437ce 188 (void)startHandle;
rgrover1 734:4872b70437ce 189 (void)endHandle;
rgrover1 734:4872b70437ce 190
vcoubard 1048:efb29faf12fc 191 return BLE_ERROR_NOT_IMPLEMENTED; /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 716:11b41f651697 192 }
rgrover1 716:11b41f651697 193
rgrover1 716:11b41f651697 194 /**
rgrover1 716:11b41f651697 195 * Is service-discovery currently active?
rgrover1 716:11b41f651697 196 */
rgrover1 716:11b41f651697 197 virtual bool isServiceDiscoveryActive(void) const {
vcoubard 1048:efb29faf12fc 198 return false; /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 716:11b41f651697 199 }
rgrover1 716:11b41f651697 200
rgrover1 716:11b41f651697 201 /**
vcoubard 1048:efb29faf12fc 202 * Terminate an ongoing service discovery. This should result in an
vcoubard 1048:efb29faf12fc 203 * invocation of TerminationCallback if service-discovery is active.
rgrover1 716:11b41f651697 204 */
rgrover1 716:11b41f651697 205 virtual void terminateServiceDiscovery(void) {
vcoubard 1048:efb29faf12fc 206 /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 716:11b41f651697 207 }
rgrover1 716:11b41f651697 208
vcoubard 1048:efb29faf12fc 209 /* Initiate a GATT Client read procedure by attribute-handle. */
rgrover1 716:11b41f651697 210 virtual ble_error_t read(Gap::Handle_t connHandle, GattAttribute::Handle_t attributeHandle, uint16_t offset) const {
vcoubard 1048:efb29faf12fc 211 /* Avoid compiler warnings about unused variables. */
rgrover1 734:4872b70437ce 212 (void)connHandle;
rgrover1 734:4872b70437ce 213 (void)attributeHandle;
rgrover1 734:4872b70437ce 214 (void)offset;
rgrover1 734:4872b70437ce 215
vcoubard 1048:efb29faf12fc 216 return BLE_ERROR_NOT_IMPLEMENTED; /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 716:11b41f651697 217 }
rgrover1 716:11b41f651697 218
rgrover1 716:11b41f651697 219 /**
rgrover1 716:11b41f651697 220 * Initiate a GATT Client write procedure.
rgrover1 716:11b41f651697 221 *
rgrover1 716:11b41f651697 222 * @param[in] cmd
vcoubard 1110:0a797e141266 223 * Command can be either a write-request (which generates a
vcoubard 1110:0a797e141266 224 * matching response from the peripheral), or a write-command
vcoubard 1048:efb29faf12fc 225 * (which doesn't require the connected peer to respond).
rgrover1 716:11b41f651697 226 * @param[in] connHandle
rgrover1 716:11b41f651697 227 * Connection handle.
rgrover1 716:11b41f651697 228 * @param[in] attributeHandle
vcoubard 1048:efb29faf12fc 229 * Handle for the target attribtue on the remote GATT server.
rgrover1 716:11b41f651697 230 * @param[in] length
vcoubard 1048:efb29faf12fc 231 * Length of the new value.
rgrover1 716:11b41f651697 232 * @param[in] value
vcoubard 1048:efb29faf12fc 233 * New value being written.
rgrover1 716:11b41f651697 234 */
rgrover1 716:11b41f651697 235 virtual ble_error_t write(GattClient::WriteOp_t cmd,
rgrover1 716:11b41f651697 236 Gap::Handle_t connHandle,
rgrover1 716:11b41f651697 237 GattAttribute::Handle_t attributeHandle,
rgrover1 716:11b41f651697 238 size_t length,
rgrover1 716:11b41f651697 239 const uint8_t *value) const {
vcoubard 1048:efb29faf12fc 240 /* Avoid compiler warnings about unused variables. */
rgrover1 734:4872b70437ce 241 (void)cmd;
rgrover1 734:4872b70437ce 242 (void)connHandle;
rgrover1 734:4872b70437ce 243 (void)attributeHandle;
rgrover1 734:4872b70437ce 244 (void)length;
rgrover1 734:4872b70437ce 245 (void)value;
rgrover1 734:4872b70437ce 246
vcoubard 1048:efb29faf12fc 247 return BLE_ERROR_NOT_IMPLEMENTED; /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 728:997ba5e7b3b6 248 }
rgrover1 728:997ba5e7b3b6 249
rgrover1 728:997ba5e7b3b6 250 /* Event callback handlers. */
rgrover1 728:997ba5e7b3b6 251 public:
rgrover1 728:997ba5e7b3b6 252 /**
vcoubard 1110:0a797e141266 253 * Set up a callback for read response events.
vcoubard 1110:0a797e141266 254 * It is possible to remove registered callbacks using
vcoubard 1052:b55e1ad3e1b3 255 * onDataRead().detach(callbackToRemove)
rgrover1 728:997ba5e7b3b6 256 */
rgrover1 728:997ba5e7b3b6 257 void onDataRead(ReadCallback_t callback) {
vcoubard 1052:b55e1ad3e1b3 258 onDataReadCallbackChain.add(callback);
vcoubard 1052:b55e1ad3e1b3 259 }
vcoubard 1052:b55e1ad3e1b3 260
vcoubard 1052:b55e1ad3e1b3 261 /**
vcoubard 1052:b55e1ad3e1b3 262 * @brief provide access to the callchain of read callbacks
vcoubard 1052:b55e1ad3e1b3 263 * It is possible to register callbacks using onDataRead().add(callback);
vcoubard 1110:0a797e141266 264 * It is possible to unregister callbacks using onDataRead().detach(callback)
vcoubard 1052:b55e1ad3e1b3 265 * @return The read callbacks chain
vcoubard 1052:b55e1ad3e1b3 266 */
vcoubard 1052:b55e1ad3e1b3 267 ReadCallbackChain_t& onDataRead() {
vcoubard 1052:b55e1ad3e1b3 268 return onDataReadCallbackChain;
rgrover1 728:997ba5e7b3b6 269 }
rgrover1 728:997ba5e7b3b6 270
rgrover1 728:997ba5e7b3b6 271 /**
vcoubard 1048:efb29faf12fc 272 * Set up a callback for write response events.
vcoubard 1110:0a797e141266 273 * It is possible to remove registered callbacks using
vcoubard 1052:b55e1ad3e1b3 274 * onDataWritten().detach(callbackToRemove).
vcoubard 1048:efb29faf12fc 275 * @Note: Write commands (issued using writeWoResponse) don't generate a response.
rgrover1 728:997ba5e7b3b6 276 */
rgrover1 768:8914bea92690 277 void onDataWritten(WriteCallback_t callback) {
vcoubard 1052:b55e1ad3e1b3 278 onDataWriteCallbackChain.add(callback);
vcoubard 1052:b55e1ad3e1b3 279 }
vcoubard 1052:b55e1ad3e1b3 280
vcoubard 1052:b55e1ad3e1b3 281 /**
vcoubard 1052:b55e1ad3e1b3 282 * @brief provide access to the callchain of data written callbacks
vcoubard 1052:b55e1ad3e1b3 283 * It is possible to register callbacks using onDataWritten().add(callback);
vcoubard 1110:0a797e141266 284 * It is possible to unregister callbacks using onDataWritten().detach(callback)
vcoubard 1052:b55e1ad3e1b3 285 * @return The data written callbacks chain
vcoubard 1052:b55e1ad3e1b3 286 */
vcoubard 1110:0a797e141266 287 WriteCallbackChain_t& onDataWritten() {
vcoubard 1052:b55e1ad3e1b3 288 return onDataWriteCallbackChain;
rgrover1 990:53ac0ac3aa39 289 }
rgrover1 990:53ac0ac3aa39 290
rgrover1 990:53ac0ac3aa39 291 /**
vcoubard 1048:efb29faf12fc 292 * Set up a callback for write response events.
vcoubard 1048:efb29faf12fc 293 * @Note: Write commands (issued using writeWoResponse) don't generate a response.
rgrover1 768:8914bea92690 294 *
rgrover1 768:8914bea92690 295 * @note: This API is now *deprecated* and will be dropped in the future.
rgrover1 768:8914bea92690 296 * Please use onDataWritten() instead.
rgrover1 768:8914bea92690 297 */
rgrover1 728:997ba5e7b3b6 298 void onDataWrite(WriteCallback_t callback) {
rgrover1 768:8914bea92690 299 onDataWritten(callback);
rgrover1 720:ce8a760a4504 300 }
rgrover1 720:ce8a760a4504 301
rgrover1 716:11b41f651697 302 /**
vcoubard 1048:efb29faf12fc 303 * Set up a callback for when serviceDiscovery terminates.
rgrover1 716:11b41f651697 304 */
rgrover1 716:11b41f651697 305 virtual void onServiceDiscoveryTermination(ServiceDiscovery::TerminationCallback_t callback) {
vcoubard 1048:efb29faf12fc 306 (void)callback; /* Avoid compiler warnings about ununsed variables. */
rgrover1 734:4872b70437ce 307
vcoubard 1048:efb29faf12fc 308 /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 716:11b41f651697 309 }
rgrover1 716:11b41f651697 310
rgrover1 737:79d95f9b93be 311 /**
vcoubard 1110:0a797e141266 312 * @brief launch discovery of descriptors for a given characteristic
vcoubard 1110:0a797e141266 313 * @details This function will discover all descriptors available for a
vcoubard 1110:0a797e141266 314 * specific characteristic.
vcoubard 1110:0a797e141266 315 *
vcoubard 1110:0a797e141266 316 * @param characteristic[in] The characteristic targeted by this discovery
vcoubard 1110:0a797e141266 317 * procedure
vcoubard 1110:0a797e141266 318 * @param discoveryCallback[in] User function called each time a descriptor
vcoubard 1110:0a797e141266 319 * is found during the procedure.
vcoubard 1110:0a797e141266 320 * @param terminationCallback[in] User provided function which will be called
vcoubard 1110:0a797e141266 321 * once the discovery procedure is terminating. This will get called when all
vcoubard 1110:0a797e141266 322 * the descriptors have been discovered or if an error occur during the discovery
vcoubard 1110:0a797e141266 323 * procedure.
vcoubard 1110:0a797e141266 324 *
vcoubard 1110:0a797e141266 325 * @return
vcoubard 1110:0a797e141266 326 * BLE_ERROR_NONE if characteristic descriptor discovery is launched
vcoubard 1110:0a797e141266 327 * successfully; else an appropriate error.
vcoubard 1110:0a797e141266 328 */
vcoubard 1110:0a797e141266 329 virtual ble_error_t discoverCharacteristicDescriptors(
vcoubard 1110:0a797e141266 330 const DiscoveredCharacteristic& characteristic,
vcoubard 1110:0a797e141266 331 const CharacteristicDescriptorDiscovery::DiscoveryCallback_t& discoveryCallback,
vcoubard 1110:0a797e141266 332 const CharacteristicDescriptorDiscovery::TerminationCallback_t& terminationCallback) {
vcoubard 1110:0a797e141266 333 (void) characteristic;
vcoubard 1110:0a797e141266 334 (void) discoveryCallback;
vcoubard 1110:0a797e141266 335 (void) terminationCallback;
vcoubard 1110:0a797e141266 336 /* Requesting action from porter(s): override this API if this capability is supported. */
vcoubard 1110:0a797e141266 337 return BLE_ERROR_NOT_IMPLEMENTED;
vcoubard 1110:0a797e141266 338 }
vcoubard 1110:0a797e141266 339
vcoubard 1110:0a797e141266 340 /**
vcoubard 1110:0a797e141266 341 * @brief Indicate if the discovery of characteristic descriptors is active for a given characteristic
vcoubard 1110:0a797e141266 342 * or not.
vcoubard 1110:0a797e141266 343 * @param characteristic[in] The characteristic concerned by the descriptors discovery.
vcoubard 1110:0a797e141266 344 * @return true if a descriptors discovery is active for the characteristic in input; otherwise false.
vcoubard 1110:0a797e141266 345 */
vcoubard 1110:0a797e141266 346 virtual bool isCharacteristicDescriptorDiscoveryActive(const DiscoveredCharacteristic& characteristic) const
vcoubard 1110:0a797e141266 347 {
vcoubard 1110:0a797e141266 348 (void) characteristic;
vcoubard 1110:0a797e141266 349 return false; /* Requesting action from porter(s): override this API if this capability is supported. */
vcoubard 1110:0a797e141266 350 }
vcoubard 1110:0a797e141266 351
vcoubard 1110:0a797e141266 352 /**
vcoubard 1110:0a797e141266 353 * @brief Terminate an ongoing characteristic descriptor discovery.
vcoubard 1110:0a797e141266 354 * @detail This should result in an invocation of the TerminationCallback if
vcoubard 1110:0a797e141266 355 * the characteristic descriptor discovery is active.
vcoubard 1110:0a797e141266 356 * @param characteristic[in] The characteristic on which the running descriptors
vcoubard 1110:0a797e141266 357 * discovery should be stopped.
vcoubard 1110:0a797e141266 358 */
vcoubard 1110:0a797e141266 359 virtual void terminateCharacteristicDescriptorDiscovery(const DiscoveredCharacteristic& characteristic) {
vcoubard 1110:0a797e141266 360 /* Requesting action from porter(s): override this API if this capability is supported. */
vcoubard 1110:0a797e141266 361 (void) characteristic;
vcoubard 1110:0a797e141266 362 }
vcoubard 1110:0a797e141266 363
vcoubard 1110:0a797e141266 364 /**
vcoubard 1048:efb29faf12fc 365 * Set up a callback for when the GATT client receives an update event
vcoubard 1048:efb29faf12fc 366 * corresponding to a change in the value of a characteristic on the remote
vcoubard 1048:efb29faf12fc 367 * GATT server.
vcoubard 1052:b55e1ad3e1b3 368 * It is possible to remove registered callbacks using onHVX().detach(callbackToRemove).
rgrover1 737:79d95f9b93be 369 */
rgrover1 737:79d95f9b93be 370 void onHVX(HVXCallback_t callback) {
vcoubard 1052:b55e1ad3e1b3 371 onHVXCallbackChain.add(callback);
vcoubard 1052:b55e1ad3e1b3 372 }
vcoubard 1052:b55e1ad3e1b3 373
vcoubard 1090:148d8b9b56a5 374 /**
vcoubard 1090:148d8b9b56a5 375 * Setup a callback to be invoked to notify the user application that the
vcoubard 1090:148d8b9b56a5 376 * GattClient instance is about to shutdown (possibly as a result of a call
vcoubard 1090:148d8b9b56a5 377 * to BLE::shutdown()).
vcoubard 1090:148d8b9b56a5 378 *
vcoubard 1090:148d8b9b56a5 379 * @Note: It is possible to chain together multiple onShutdown callbacks
vcoubard 1090:148d8b9b56a5 380 * (potentially from different modules of an application) to be notified
vcoubard 1090:148d8b9b56a5 381 * before the GattClient is shutdown.
vcoubard 1090:148d8b9b56a5 382 *
vcoubard 1090:148d8b9b56a5 383 * @Note: It is also possible to set up a callback into a member function of
vcoubard 1090:148d8b9b56a5 384 * some object.
vcoubard 1090:148d8b9b56a5 385 *
vcoubard 1090:148d8b9b56a5 386 * @Note It is possible to unregister a callback using onShutdown().detach(callback)
vcoubard 1090:148d8b9b56a5 387 */
vcoubard 1090:148d8b9b56a5 388 void onShutdown(const GattClientShutdownCallback_t& callback) {
vcoubard 1090:148d8b9b56a5 389 shutdownCallChain.add(callback);
vcoubard 1090:148d8b9b56a5 390 }
vcoubard 1090:148d8b9b56a5 391 template <typename T>
vcoubard 1090:148d8b9b56a5 392 void onShutdown(T *objPtr, void (T::*memberPtr)(void)) {
vcoubard 1090:148d8b9b56a5 393 shutdownCallChain.add(objPtr, memberPtr);
vcoubard 1090:148d8b9b56a5 394 }
vcoubard 1090:148d8b9b56a5 395
vcoubard 1090:148d8b9b56a5 396 /**
vcoubard 1090:148d8b9b56a5 397 * @brief provide access to the callchain of shutdown event callbacks
vcoubard 1090:148d8b9b56a5 398 * It is possible to register callbacks using onShutdown().add(callback);
vcoubard 1090:148d8b9b56a5 399 * It is possible to unregister callbacks using onShutdown().detach(callback)
vcoubard 1090:148d8b9b56a5 400 * @return The shutdown event callbacks chain
vcoubard 1090:148d8b9b56a5 401 */
vcoubard 1090:148d8b9b56a5 402 GattClientShutdownCallbackChain_t& onShutdown() {
vcoubard 1090:148d8b9b56a5 403 return shutdownCallChain;
vcoubard 1090:148d8b9b56a5 404 }
vcoubard 1052:b55e1ad3e1b3 405
vcoubard 1052:b55e1ad3e1b3 406 /**
vcoubard 1052:b55e1ad3e1b3 407 * @brief provide access to the callchain of HVX callbacks
vcoubard 1052:b55e1ad3e1b3 408 * It is possible to register callbacks using onHVX().add(callback);
vcoubard 1110:0a797e141266 409 * It is possible to unregister callbacks using onHVX().detach(callback)
vcoubard 1052:b55e1ad3e1b3 410 * @return The HVX callbacks chain
vcoubard 1052:b55e1ad3e1b3 411 */
vcoubard 1110:0a797e141266 412 HVXCallbackChain_t& onHVX() {
vcoubard 1052:b55e1ad3e1b3 413 return onHVXCallbackChain;
rgrover1 737:79d95f9b93be 414 }
rgrover1 737:79d95f9b93be 415
vcoubard 1082:127667021827 416 public:
vcoubard 1082:127667021827 417 /**
vcoubard 1090:148d8b9b56a5 418 * Notify all registered onShutdown callbacks that the GattClient is
vcoubard 1090:148d8b9b56a5 419 * about to be shutdown and clear all GattClient state of the
vcoubard 1090:148d8b9b56a5 420 * associated object.
vcoubard 1082:127667021827 421 *
vcoubard 1082:127667021827 422 * This function is meant to be overridden in the platform-specific
vcoubard 1082:127667021827 423 * sub-class. Nevertheless, the sub-class is only expected to reset its
vcoubard 1082:127667021827 424 * state and not the data held in GattClient members. This shall be achieved
vcoubard 1082:127667021827 425 * by a call to GattClient::reset() from the sub-class' reset()
vcoubard 1082:127667021827 426 * implementation.
vcoubard 1082:127667021827 427 *
vcoubard 1082:127667021827 428 * @return BLE_ERROR_NONE on success.
vcoubard 1082:127667021827 429 */
vcoubard 1082:127667021827 430 virtual ble_error_t reset(void) {
vcoubard 1090:148d8b9b56a5 431 /* Notify that the instance is about to shutdown */
vcoubard 1090:148d8b9b56a5 432 shutdownCallChain.call(this);
vcoubard 1090:148d8b9b56a5 433 shutdownCallChain.clear();
vcoubard 1090:148d8b9b56a5 434
vcoubard 1082:127667021827 435 onDataReadCallbackChain.clear();
vcoubard 1082:127667021827 436 onDataWriteCallbackChain.clear();
vcoubard 1082:127667021827 437 onHVXCallbackChain.clear();
vcoubard 1082:127667021827 438
vcoubard 1082:127667021827 439 return BLE_ERROR_NONE;
vcoubard 1082:127667021827 440 }
vcoubard 1082:127667021827 441
rgrover1 716:11b41f651697 442 protected:
rgrover1 716:11b41f651697 443 GattClient() {
vcoubard 1048:efb29faf12fc 444 /* Empty */
rgrover1 716:11b41f651697 445 }
rgrover1 716:11b41f651697 446
rgrover1 728:997ba5e7b3b6 447 /* Entry points for the underlying stack to report events back to the user. */
rgrover1 728:997ba5e7b3b6 448 public:
rgrover1 728:997ba5e7b3b6 449 void processReadResponse(const GattReadCallbackParams *params) {
vcoubard 1052:b55e1ad3e1b3 450 onDataReadCallbackChain(params);
rgrover1 728:997ba5e7b3b6 451 }
rgrover1 728:997ba5e7b3b6 452
rgrover1 728:997ba5e7b3b6 453 void processWriteResponse(const GattWriteCallbackParams *params) {
vcoubard 1052:b55e1ad3e1b3 454 onDataWriteCallbackChain(params);
rgrover1 728:997ba5e7b3b6 455 }
rgrover1 728:997ba5e7b3b6 456
rgrover1 737:79d95f9b93be 457 void processHVXEvent(const GattHVXCallbackParams *params) {
vcoubard 1052:b55e1ad3e1b3 458 if (onHVXCallbackChain) {
vcoubard 1052:b55e1ad3e1b3 459 onHVXCallbackChain(params);
rgrover1 737:79d95f9b93be 460 }
rgrover1 737:79d95f9b93be 461 }
rgrover1 737:79d95f9b93be 462
rgrover1 728:997ba5e7b3b6 463 protected:
vcoubard 1090:148d8b9b56a5 464 ReadCallbackChain_t onDataReadCallbackChain;
vcoubard 1090:148d8b9b56a5 465 WriteCallbackChain_t onDataWriteCallbackChain;
vcoubard 1090:148d8b9b56a5 466 HVXCallbackChain_t onHVXCallbackChain;
vcoubard 1090:148d8b9b56a5 467 GattClientShutdownCallbackChain_t shutdownCallChain;
rgrover1 728:997ba5e7b3b6 468
rgrover1 716:11b41f651697 469 private:
vcoubard 1048:efb29faf12fc 470 /* Disallow copy and assignment. */
rgrover1 716:11b41f651697 471 GattClient(const GattClient &);
rgrover1 716:11b41f651697 472 GattClient& operator=(const GattClient &);
rgrover1 716:11b41f651697 473 };
rgrover1 716:11b41f651697 474
rgrover1 716:11b41f651697 475 #endif // ifndef __GATT_CLIENT_H__