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ble/GattClient.h@1090:148d8b9b56a5, 2016-01-11 (annotated)

Committer:
vcoubard
Date:
Mon Jan 11 08:51:50 2016 +0000
Revision:
1090:148d8b9b56a5
Parent:
1089:8e810a8e083e
Child:
1110:0a797e141266
Synchronized with git rev 0024b78a

Author: Andres Amaya Garcia

Clear shutdown callchain after exec 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
vcoubard 1052:b55e1ad3e1b3 26 #include "CallChainOfFunctionPointersWithContext.h"
vcoubard 1052:b55e1ad3e1b3 27
rgrover1 716:11b41f651697 28 class GattClient {
rgrover1 716:11b41f651697 29 public:
vcoubard 1052:b55e1ad3e1b3 30 typedef FunctionPointerWithContext<const GattReadCallbackParams*> ReadCallback_t;
vcoubard 1052:b55e1ad3e1b3 31 typedef CallChainOfFunctionPointersWithContext<const GattReadCallbackParams*> ReadCallbackChain_t;
rgrover1 716:11b41f651697 32
rgrover1 716:11b41f651697 33 enum WriteOp_t {
vcoubard 1048:efb29faf12fc 34 GATT_OP_WRITE_REQ = 0x01, /**< Write request. */
vcoubard 1048:efb29faf12fc 35 GATT_OP_WRITE_CMD = 0x02, /**< Write command. */
rgrover1 716:11b41f651697 36 };
rgrover1 716:11b41f651697 37
vcoubard 1052:b55e1ad3e1b3 38 typedef FunctionPointerWithContext<const GattWriteCallbackParams*> WriteCallback_t;
vcoubard 1052:b55e1ad3e1b3 39 typedef CallChainOfFunctionPointersWithContext<const GattWriteCallbackParams*> WriteCallbackChain_t;
rgrover1 716:11b41f651697 40
vcoubard 1052:b55e1ad3e1b3 41 typedef FunctionPointerWithContext<const GattHVXCallbackParams*> HVXCallback_t;
vcoubard 1052:b55e1ad3e1b3 42 typedef CallChainOfFunctionPointersWithContext<const GattHVXCallbackParams*> HVXCallbackChain_t;
rgrover1 737:79d95f9b93be 43
vcoubard 1090:148d8b9b56a5 44 typedef FunctionPointerWithContext<const GattClient *> GattClientShutdownCallback_t;
vcoubard 1090:148d8b9b56a5 45 typedef CallChainOfFunctionPointersWithContext<const GattClient *> GattClientShutdownCallbackChain_t;
vcoubard 1090:148d8b9b56a5 46
rgrover1 716:11b41f651697 47 /*
rgrover1 716:11b41f651697 48 * The following functions are meant to be overridden in the platform-specific sub-class.
rgrover1 716:11b41f651697 49 */
rgrover1 716:11b41f651697 50 public:
rgrover1 716:11b41f651697 51 /**
rgrover1 728:997ba5e7b3b6 52 * Launch service discovery. Once launched, application callbacks will be
vcoubard 1048:efb29faf12fc 53 * invoked for matching services or characteristics. isServiceDiscoveryActive()
vcoubard 1048:efb29faf12fc 54 * can be used to determine status, and a termination callback (if one was set up)
vcoubard 1048:efb29faf12fc 55 * will be invoked at the end. Service discovery can be terminated prematurely,
vcoubard 1048:efb29faf12fc 56 * if needed, using terminateServiceDiscovery().
rgrover1 716:11b41f651697 57 *
rgrover1 716:11b41f651697 58 * @param connectionHandle
rgrover1 716:11b41f651697 59 * Handle for the connection with the peer.
rgrover1 716:11b41f651697 60 * @param sc
vcoubard 1048:efb29faf12fc 61 * This is the application callback for a matching service. Taken as
rgrover1 716:11b41f651697 62 * NULL by default. Note: service discovery may still be active
rgrover1 716:11b41f651697 63 * when this callback is issued; calling asynchronous BLE-stack
rgrover1 716:11b41f651697 64 * APIs from within this application callback might cause the
rgrover1 716:11b41f651697 65 * stack to abort service discovery. If this becomes an issue, it
vcoubard 1048:efb29faf12fc 66 * may be better to make a local copy of the discoveredService and
rgrover1 716:11b41f651697 67 * wait for service discovery to terminate before operating on the
rgrover1 716:11b41f651697 68 * service.
rgrover1 716:11b41f651697 69 * @param cc
vcoubard 1048:efb29faf12fc 70 * This is the application callback for a matching characteristic.
rgrover1 716:11b41f651697 71 * Taken as NULL by default. Note: service discovery may still be
rgrover1 716:11b41f651697 72 * active when this callback is issued; calling asynchronous
rgrover1 716:11b41f651697 73 * BLE-stack APIs from within this application callback might cause
rgrover1 716:11b41f651697 74 * the stack to abort service discovery. If this becomes an issue,
vcoubard 1048:efb29faf12fc 75 * it may be better to make a local copy of the discoveredCharacteristic
rgrover1 716:11b41f651697 76 * and wait for service discovery to terminate before operating on the
rgrover1 716:11b41f651697 77 * characteristic.
rgrover1 716:11b41f651697 78 * @param matchingServiceUUID
vcoubard 1048:efb29faf12fc 79 * UUID-based filter for specifying a service in which the application is
rgrover1 716:11b41f651697 80 * interested. By default it is set as the wildcard UUID_UNKNOWN,
rgrover1 716:11b41f651697 81 * in which case it matches all services. If characteristic-UUID
rgrover1 716:11b41f651697 82 * filter (below) is set to the wildcard value, then a service
rgrover1 716:11b41f651697 83 * callback will be invoked for the matching service (or for every
rgrover1 716:11b41f651697 84 * service if the service filter is a wildcard).
rgrover1 716:11b41f651697 85 * @param matchingCharacteristicUUIDIn
vcoubard 1048:efb29faf12fc 86 * UUID-based filter for specifying characteristic in which the application
rgrover1 716:11b41f651697 87 * is interested. By default it is set as the wildcard UUID_UKNOWN
rgrover1 716:11b41f651697 88 * to match against any characteristic. If both service-UUID
vcoubard 1048:efb29faf12fc 89 * filter and characteristic-UUID filter are used with non-wildcard
rgrover1 716:11b41f651697 90 * values, then only a single characteristic callback is
rgrover1 716:11b41f651697 91 * invoked for the matching characteristic.
rgrover1 716:11b41f651697 92 *
rgrover1 716:11b41f651697 93 * @note Using wildcard values for both service-UUID and characteristic-
vcoubard 1048:efb29faf12fc 94 * UUID will result in complete service discovery: callbacks being
rgrover1 716:11b41f651697 95 * called for every service and characteristic.
rgrover1 716:11b41f651697 96 *
rgrover1 716:11b41f651697 97 * @note Providing NULL for the characteristic callback will result in
rgrover1 716:11b41f651697 98 * characteristic discovery being skipped for each matching
rgrover1 716:11b41f651697 99 * service. This allows for an inexpensive method to discover only
rgrover1 716:11b41f651697 100 * services.
rgrover1 716:11b41f651697 101 *
rgrover1 716:11b41f651697 102 * @return
rgrover1 716:11b41f651697 103 * BLE_ERROR_NONE if service discovery is launched successfully; else an appropriate error.
rgrover1 716:11b41f651697 104 */
rgrover1 716:11b41f651697 105 virtual ble_error_t launchServiceDiscovery(Gap::Handle_t connectionHandle,
rgrover1 716:11b41f651697 106 ServiceDiscovery::ServiceCallback_t sc = NULL,
rgrover1 716:11b41f651697 107 ServiceDiscovery::CharacteristicCallback_t cc = NULL,
rgrover1 716:11b41f651697 108 const UUID &matchingServiceUUID = UUID::ShortUUIDBytes_t(BLE_UUID_UNKNOWN),
rgrover1 716:11b41f651697 109 const UUID &matchingCharacteristicUUIDIn = UUID::ShortUUIDBytes_t(BLE_UUID_UNKNOWN)) {
vcoubard 1048:efb29faf12fc 110 /* Avoid compiler warnings about unused variables. */
rgrover1 734:4872b70437ce 111 (void)connectionHandle;
rgrover1 734:4872b70437ce 112 (void)sc;
rgrover1 734:4872b70437ce 113 (void)cc;
rgrover1 734:4872b70437ce 114 (void)matchingServiceUUID;
rgrover1 734:4872b70437ce 115 (void)matchingCharacteristicUUIDIn;
rgrover1 734:4872b70437ce 116
vcoubard 1048:efb29faf12fc 117 return BLE_ERROR_NOT_IMPLEMENTED; /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 716:11b41f651697 118 }
rgrover1 716:11b41f651697 119
rgrover1 716:11b41f651697 120 /**
rgrover1 716:11b41f651697 121 * Launch service discovery for services. Once launched, service discovery will remain
rgrover1 716:11b41f651697 122 * active with service-callbacks being issued back into the application for matching
rgrover1 716:11b41f651697 123 * services. isServiceDiscoveryActive() can be used to
vcoubard 1048:efb29faf12fc 124 * determine status, and a termination callback (if set up) will be invoked
vcoubard 1048:efb29faf12fc 125 * at the end. Service discovery can be terminated prematurely, if needed,
rgrover1 716:11b41f651697 126 * using terminateServiceDiscovery().
rgrover1 716:11b41f651697 127 *
rgrover1 716:11b41f651697 128 * @param connectionHandle
rgrover1 716:11b41f651697 129 * Handle for the connection with the peer.
rgrover1 716:11b41f651697 130 * @param sc
vcoubard 1048:efb29faf12fc 131 * This is the application callback for a matching service. Note: service discovery may still be active
rgrover1 716:11b41f651697 132 * when this callback is issued; calling asynchronous BLE-stack
rgrover1 716:11b41f651697 133 * APIs from within this application callback might cause the
rgrover1 716:11b41f651697 134 * stack to abort service discovery. If this becomes an issue, it
vcoubard 1048:efb29faf12fc 135 * may be better to make a local copy of the discoveredService and
rgrover1 716:11b41f651697 136 * wait for service discovery to terminate before operating on the
rgrover1 716:11b41f651697 137 * service.
rgrover1 716:11b41f651697 138 * @param matchingServiceUUID
vcoubard 1048:efb29faf12fc 139 * UUID-based filter for specifying a service in which the application is
rgrover1 716:11b41f651697 140 * interested. By default it is set as the wildcard UUID_UNKNOWN,
rgrover1 716:11b41f651697 141 * in which case it matches all services.
rgrover1 716:11b41f651697 142 *
rgrover1 716:11b41f651697 143 * @return
rgrover1 716:11b41f651697 144 * BLE_ERROR_NONE if service discovery is launched successfully; else an appropriate error.
rgrover1 716:11b41f651697 145 */
rgrover1 716:11b41f651697 146 virtual ble_error_t discoverServices(Gap::Handle_t connectionHandle,
rgrover1 716:11b41f651697 147 ServiceDiscovery::ServiceCallback_t callback,
rgrover1 716:11b41f651697 148 const UUID &matchingServiceUUID = UUID::ShortUUIDBytes_t(BLE_UUID_UNKNOWN)) {
rgrover1 742:861ed7eb186d 149 return launchServiceDiscovery(connectionHandle, callback, NULL, matchingServiceUUID); /* We take advantage of the property
rgrover1 742:861ed7eb186d 150 * that providing NULL for the characteristic callback will result in
rgrover1 742:861ed7eb186d 151 * characteristic discovery being skipped for each matching
rgrover1 742:861ed7eb186d 152 * service. This allows for an inexpensive method to discover only
vcoubard 1048:efb29faf12fc 153 * services. Porters are free to override this. */
rgrover1 716:11b41f651697 154 }
rgrover1 716:11b41f651697 155
rgrover1 716:11b41f651697 156 /**
rgrover1 716:11b41f651697 157 * Launch service discovery for services. Once launched, service discovery will remain
rgrover1 716:11b41f651697 158 * active with service-callbacks being issued back into the application for matching
rgrover1 716:11b41f651697 159 * services. isServiceDiscoveryActive() can be used to
vcoubard 1048:efb29faf12fc 160 * determine status, and a termination callback (if set up) will be invoked
vcoubard 1048:efb29faf12fc 161 * at the end. Service discovery can be terminated prematurely, if needed,
rgrover1 716:11b41f651697 162 * using terminateServiceDiscovery().
rgrover1 716:11b41f651697 163 *
rgrover1 716:11b41f651697 164 * @param connectionHandle
rgrover1 716:11b41f651697 165 * Handle for the connection with the peer.
rgrover1 716:11b41f651697 166 * @param sc
vcoubard 1048:efb29faf12fc 167 * This is the application callback for a matching service. Note: service discovery may still be active
rgrover1 716:11b41f651697 168 * when this callback is issued; calling asynchronous BLE-stack
rgrover1 716:11b41f651697 169 * APIs from within this application callback might cause the
rgrover1 716:11b41f651697 170 * stack to abort service discovery. If this becomes an issue, it
vcoubard 1048:efb29faf12fc 171 * may be better to make a local copy of the discoveredService and
rgrover1 716:11b41f651697 172 * wait for service discovery to terminate before operating on the
rgrover1 716:11b41f651697 173 * service.
rgrover1 716:11b41f651697 174 * @param startHandle, endHandle
vcoubard 1048:efb29faf12fc 175 * Handle range within which to limit the search.
rgrover1 716:11b41f651697 176 *
rgrover1 716:11b41f651697 177 * @return
rgrover1 716:11b41f651697 178 * BLE_ERROR_NONE if service discovery is launched successfully; else an appropriate error.
rgrover1 716:11b41f651697 179 */
rgrover1 716:11b41f651697 180 virtual ble_error_t discoverServices(Gap::Handle_t connectionHandle,
rgrover1 716:11b41f651697 181 ServiceDiscovery::ServiceCallback_t callback,
rgrover1 716:11b41f651697 182 GattAttribute::Handle_t startHandle,
rgrover1 716:11b41f651697 183 GattAttribute::Handle_t endHandle) {
vcoubard 1048:efb29faf12fc 184 /* Avoid compiler warnings about unused variables. */
rgrover1 734:4872b70437ce 185 (void)connectionHandle;
rgrover1 734:4872b70437ce 186 (void)callback;
rgrover1 734:4872b70437ce 187 (void)startHandle;
rgrover1 734:4872b70437ce 188 (void)endHandle;
rgrover1 734:4872b70437ce 189
vcoubard 1048:efb29faf12fc 190 return BLE_ERROR_NOT_IMPLEMENTED; /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 716:11b41f651697 191 }
rgrover1 716:11b41f651697 192
rgrover1 716:11b41f651697 193 /**
rgrover1 716:11b41f651697 194 * Is service-discovery currently active?
rgrover1 716:11b41f651697 195 */
rgrover1 716:11b41f651697 196 virtual bool isServiceDiscoveryActive(void) const {
vcoubard 1048:efb29faf12fc 197 return false; /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 716:11b41f651697 198 }
rgrover1 716:11b41f651697 199
rgrover1 716:11b41f651697 200 /**
vcoubard 1048:efb29faf12fc 201 * Terminate an ongoing service discovery. This should result in an
vcoubard 1048:efb29faf12fc 202 * invocation of TerminationCallback if service-discovery is active.
rgrover1 716:11b41f651697 203 */
rgrover1 716:11b41f651697 204 virtual void terminateServiceDiscovery(void) {
vcoubard 1048:efb29faf12fc 205 /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 716:11b41f651697 206 }
rgrover1 716:11b41f651697 207
vcoubard 1048:efb29faf12fc 208 /* Initiate a GATT Client read procedure by attribute-handle. */
rgrover1 716:11b41f651697 209 virtual ble_error_t read(Gap::Handle_t connHandle, GattAttribute::Handle_t attributeHandle, uint16_t offset) const {
vcoubard 1048:efb29faf12fc 210 /* Avoid compiler warnings about unused variables. */
rgrover1 734:4872b70437ce 211 (void)connHandle;
rgrover1 734:4872b70437ce 212 (void)attributeHandle;
rgrover1 734:4872b70437ce 213 (void)offset;
rgrover1 734:4872b70437ce 214
vcoubard 1048:efb29faf12fc 215 return BLE_ERROR_NOT_IMPLEMENTED; /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 716:11b41f651697 216 }
rgrover1 716:11b41f651697 217
rgrover1 716:11b41f651697 218 /**
rgrover1 716:11b41f651697 219 * Initiate a GATT Client write procedure.
rgrover1 716:11b41f651697 220 *
rgrover1 716:11b41f651697 221 * @param[in] cmd
vcoubard 1078:79c089630b38 222 * Command can be either a write-request (which generates a
vcoubard 1078:79c089630b38 223 * matching response from the peripheral), or a write-command
vcoubard 1048:efb29faf12fc 224 * (which doesn't require the connected peer to respond).
rgrover1 716:11b41f651697 225 * @param[in] connHandle
rgrover1 716:11b41f651697 226 * Connection handle.
rgrover1 716:11b41f651697 227 * @param[in] attributeHandle
vcoubard 1048:efb29faf12fc 228 * Handle for the target attribtue on the remote GATT server.
rgrover1 716:11b41f651697 229 * @param[in] length
vcoubard 1048:efb29faf12fc 230 * Length of the new value.
rgrover1 716:11b41f651697 231 * @param[in] value
vcoubard 1048:efb29faf12fc 232 * New value being written.
rgrover1 716:11b41f651697 233 */
rgrover1 716:11b41f651697 234 virtual ble_error_t write(GattClient::WriteOp_t cmd,
rgrover1 716:11b41f651697 235 Gap::Handle_t connHandle,
rgrover1 716:11b41f651697 236 GattAttribute::Handle_t attributeHandle,
rgrover1 716:11b41f651697 237 size_t length,
rgrover1 716:11b41f651697 238 const uint8_t *value) const {
vcoubard 1048:efb29faf12fc 239 /* Avoid compiler warnings about unused variables. */
rgrover1 734:4872b70437ce 240 (void)cmd;
rgrover1 734:4872b70437ce 241 (void)connHandle;
rgrover1 734:4872b70437ce 242 (void)attributeHandle;
rgrover1 734:4872b70437ce 243 (void)length;
rgrover1 734:4872b70437ce 244 (void)value;
rgrover1 734:4872b70437ce 245
vcoubard 1048:efb29faf12fc 246 return BLE_ERROR_NOT_IMPLEMENTED; /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 728:997ba5e7b3b6 247 }
rgrover1 728:997ba5e7b3b6 248
rgrover1 728:997ba5e7b3b6 249 /* Event callback handlers. */
rgrover1 728:997ba5e7b3b6 250 public:
rgrover1 728:997ba5e7b3b6 251 /**
vcoubard 1078:79c089630b38 252 * Set up a callback for read response events.
vcoubard 1078:79c089630b38 253 * It is possible to remove registered callbacks using
vcoubard 1052:b55e1ad3e1b3 254 * onDataRead().detach(callbackToRemove)
rgrover1 728:997ba5e7b3b6 255 */
rgrover1 728:997ba5e7b3b6 256 void onDataRead(ReadCallback_t callback) {
vcoubard 1052:b55e1ad3e1b3 257 onDataReadCallbackChain.add(callback);
vcoubard 1052:b55e1ad3e1b3 258 }
vcoubard 1052:b55e1ad3e1b3 259
vcoubard 1052:b55e1ad3e1b3 260 /**
vcoubard 1052:b55e1ad3e1b3 261 * @brief provide access to the callchain of read callbacks
vcoubard 1052:b55e1ad3e1b3 262 * It is possible to register callbacks using onDataRead().add(callback);
vcoubard 1078:79c089630b38 263 * It is possible to unregister callbacks using onDataRead().detach(callback)
vcoubard 1052:b55e1ad3e1b3 264 * @return The read callbacks chain
vcoubard 1052:b55e1ad3e1b3 265 */
vcoubard 1052:b55e1ad3e1b3 266 ReadCallbackChain_t& onDataRead() {
vcoubard 1052:b55e1ad3e1b3 267 return onDataReadCallbackChain;
rgrover1 728:997ba5e7b3b6 268 }
rgrover1 728:997ba5e7b3b6 269
rgrover1 728:997ba5e7b3b6 270 /**
vcoubard 1048:efb29faf12fc 271 * Set up a callback for write response events.
vcoubard 1078:79c089630b38 272 * It is possible to remove registered callbacks using
vcoubard 1052:b55e1ad3e1b3 273 * onDataWritten().detach(callbackToRemove).
vcoubard 1048:efb29faf12fc 274 * @Note: Write commands (issued using writeWoResponse) don't generate a response.
rgrover1 728:997ba5e7b3b6 275 */
rgrover1 768:8914bea92690 276 void onDataWritten(WriteCallback_t callback) {
vcoubard 1052:b55e1ad3e1b3 277 onDataWriteCallbackChain.add(callback);
vcoubard 1052:b55e1ad3e1b3 278 }
vcoubard 1052:b55e1ad3e1b3 279
vcoubard 1052:b55e1ad3e1b3 280 /**
vcoubard 1052:b55e1ad3e1b3 281 * @brief provide access to the callchain of data written callbacks
vcoubard 1052:b55e1ad3e1b3 282 * It is possible to register callbacks using onDataWritten().add(callback);
vcoubard 1078:79c089630b38 283 * It is possible to unregister callbacks using onDataWritten().detach(callback)
vcoubard 1052:b55e1ad3e1b3 284 * @return The data written callbacks chain
vcoubard 1052:b55e1ad3e1b3 285 */
vcoubard 1078:79c089630b38 286 WriteCallbackChain_t& onDataWritten() {
vcoubard 1052:b55e1ad3e1b3 287 return onDataWriteCallbackChain;
rgrover1 990:53ac0ac3aa39 288 }
rgrover1 990:53ac0ac3aa39 289
rgrover1 990:53ac0ac3aa39 290 /**
vcoubard 1048:efb29faf12fc 291 * Set up a callback for write response events.
vcoubard 1048:efb29faf12fc 292 * @Note: Write commands (issued using writeWoResponse) don't generate a response.
rgrover1 768:8914bea92690 293 *
rgrover1 768:8914bea92690 294 * @note: This API is now *deprecated* and will be dropped in the future.
rgrover1 768:8914bea92690 295 * Please use onDataWritten() instead.
rgrover1 768:8914bea92690 296 */
rgrover1 728:997ba5e7b3b6 297 void onDataWrite(WriteCallback_t callback) {
rgrover1 768:8914bea92690 298 onDataWritten(callback);
rgrover1 720:ce8a760a4504 299 }
rgrover1 720:ce8a760a4504 300
rgrover1 716:11b41f651697 301 /**
vcoubard 1048:efb29faf12fc 302 * Set up a callback for when serviceDiscovery terminates.
rgrover1 716:11b41f651697 303 */
rgrover1 716:11b41f651697 304 virtual void onServiceDiscoveryTermination(ServiceDiscovery::TerminationCallback_t callback) {
vcoubard 1048:efb29faf12fc 305 (void)callback; /* Avoid compiler warnings about ununsed variables. */
rgrover1 734:4872b70437ce 306
vcoubard 1048:efb29faf12fc 307 /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 716:11b41f651697 308 }
rgrover1 716:11b41f651697 309
rgrover1 737:79d95f9b93be 310 /**
vcoubard 1048:efb29faf12fc 311 * Set up a callback for when the GATT client receives an update event
vcoubard 1048:efb29faf12fc 312 * corresponding to a change in the value of a characteristic on the remote
vcoubard 1048:efb29faf12fc 313 * GATT server.
vcoubard 1052:b55e1ad3e1b3 314 * It is possible to remove registered callbacks using onHVX().detach(callbackToRemove).
rgrover1 737:79d95f9b93be 315 */
rgrover1 737:79d95f9b93be 316 void onHVX(HVXCallback_t callback) {
vcoubard 1052:b55e1ad3e1b3 317 onHVXCallbackChain.add(callback);
vcoubard 1052:b55e1ad3e1b3 318 }
vcoubard 1052:b55e1ad3e1b3 319
vcoubard 1090:148d8b9b56a5 320 /**
vcoubard 1090:148d8b9b56a5 321 * Setup a callback to be invoked to notify the user application that the
vcoubard 1090:148d8b9b56a5 322 * GattClient instance is about to shutdown (possibly as a result of a call
vcoubard 1090:148d8b9b56a5 323 * to BLE::shutdown()).
vcoubard 1090:148d8b9b56a5 324 *
vcoubard 1090:148d8b9b56a5 325 * @Note: It is possible to chain together multiple onShutdown callbacks
vcoubard 1090:148d8b9b56a5 326 * (potentially from different modules of an application) to be notified
vcoubard 1090:148d8b9b56a5 327 * before the GattClient is shutdown.
vcoubard 1090:148d8b9b56a5 328 *
vcoubard 1090:148d8b9b56a5 329 * @Note: It is also possible to set up a callback into a member function of
vcoubard 1090:148d8b9b56a5 330 * some object.
vcoubard 1090:148d8b9b56a5 331 *
vcoubard 1090:148d8b9b56a5 332 * @Note It is possible to unregister a callback using onShutdown().detach(callback)
vcoubard 1090:148d8b9b56a5 333 */
vcoubard 1090:148d8b9b56a5 334 void onShutdown(const GattClientShutdownCallback_t& callback) {
vcoubard 1090:148d8b9b56a5 335 shutdownCallChain.add(callback);
vcoubard 1090:148d8b9b56a5 336 }
vcoubard 1090:148d8b9b56a5 337 template <typename T>
vcoubard 1090:148d8b9b56a5 338 void onShutdown(T *objPtr, void (T::*memberPtr)(void)) {
vcoubard 1090:148d8b9b56a5 339 shutdownCallChain.add(objPtr, memberPtr);
vcoubard 1090:148d8b9b56a5 340 }
vcoubard 1090:148d8b9b56a5 341
vcoubard 1090:148d8b9b56a5 342 /**
vcoubard 1090:148d8b9b56a5 343 * @brief provide access to the callchain of shutdown event callbacks
vcoubard 1090:148d8b9b56a5 344 * It is possible to register callbacks using onShutdown().add(callback);
vcoubard 1090:148d8b9b56a5 345 * It is possible to unregister callbacks using onShutdown().detach(callback)
vcoubard 1090:148d8b9b56a5 346 * @return The shutdown event callbacks chain
vcoubard 1090:148d8b9b56a5 347 */
vcoubard 1090:148d8b9b56a5 348 GattClientShutdownCallbackChain_t& onShutdown() {
vcoubard 1090:148d8b9b56a5 349 return shutdownCallChain;
vcoubard 1090:148d8b9b56a5 350 }
vcoubard 1052:b55e1ad3e1b3 351
vcoubard 1052:b55e1ad3e1b3 352 /**
vcoubard 1052:b55e1ad3e1b3 353 * @brief provide access to the callchain of HVX callbacks
vcoubard 1052:b55e1ad3e1b3 354 * It is possible to register callbacks using onHVX().add(callback);
vcoubard 1078:79c089630b38 355 * It is possible to unregister callbacks using onHVX().detach(callback)
vcoubard 1052:b55e1ad3e1b3 356 * @return The HVX callbacks chain
vcoubard 1052:b55e1ad3e1b3 357 */
vcoubard 1078:79c089630b38 358 HVXCallbackChain_t& onHVX() {
vcoubard 1052:b55e1ad3e1b3 359 return onHVXCallbackChain;
rgrover1 737:79d95f9b93be 360 }
rgrover1 737:79d95f9b93be 361
vcoubard 1082:127667021827 362 public:
vcoubard 1082:127667021827 363 /**
vcoubard 1090:148d8b9b56a5 364 * Notify all registered onShutdown callbacks that the GattClient is
vcoubard 1090:148d8b9b56a5 365 * about to be shutdown and clear all GattClient state of the
vcoubard 1090:148d8b9b56a5 366 * associated object.
vcoubard 1082:127667021827 367 *
vcoubard 1082:127667021827 368 * This function is meant to be overridden in the platform-specific
vcoubard 1082:127667021827 369 * sub-class. Nevertheless, the sub-class is only expected to reset its
vcoubard 1082:127667021827 370 * state and not the data held in GattClient members. This shall be achieved
vcoubard 1082:127667021827 371 * by a call to GattClient::reset() from the sub-class' reset()
vcoubard 1082:127667021827 372 * implementation.
vcoubard 1082:127667021827 373 *
vcoubard 1082:127667021827 374 * @return BLE_ERROR_NONE on success.
vcoubard 1082:127667021827 375 */
vcoubard 1082:127667021827 376 virtual ble_error_t reset(void) {
vcoubard 1090:148d8b9b56a5 377 /* Notify that the instance is about to shutdown */
vcoubard 1090:148d8b9b56a5 378 shutdownCallChain.call(this);
vcoubard 1090:148d8b9b56a5 379 shutdownCallChain.clear();
vcoubard 1090:148d8b9b56a5 380
vcoubard 1082:127667021827 381 onDataReadCallbackChain.clear();
vcoubard 1082:127667021827 382 onDataWriteCallbackChain.clear();
vcoubard 1082:127667021827 383 onHVXCallbackChain.clear();
vcoubard 1082:127667021827 384
vcoubard 1082:127667021827 385 return BLE_ERROR_NONE;
vcoubard 1082:127667021827 386 }
vcoubard 1082:127667021827 387
rgrover1 716:11b41f651697 388 protected:
rgrover1 716:11b41f651697 389 GattClient() {
vcoubard 1048:efb29faf12fc 390 /* Empty */
rgrover1 716:11b41f651697 391 }
rgrover1 716:11b41f651697 392
rgrover1 728:997ba5e7b3b6 393 /* Entry points for the underlying stack to report events back to the user. */
rgrover1 728:997ba5e7b3b6 394 public:
rgrover1 728:997ba5e7b3b6 395 void processReadResponse(const GattReadCallbackParams *params) {
vcoubard 1052:b55e1ad3e1b3 396 onDataReadCallbackChain(params);
rgrover1 728:997ba5e7b3b6 397 }
rgrover1 728:997ba5e7b3b6 398
rgrover1 728:997ba5e7b3b6 399 void processWriteResponse(const GattWriteCallbackParams *params) {
vcoubard 1052:b55e1ad3e1b3 400 onDataWriteCallbackChain(params);
rgrover1 728:997ba5e7b3b6 401 }
rgrover1 728:997ba5e7b3b6 402
rgrover1 737:79d95f9b93be 403 void processHVXEvent(const GattHVXCallbackParams *params) {
vcoubard 1052:b55e1ad3e1b3 404 if (onHVXCallbackChain) {
vcoubard 1052:b55e1ad3e1b3 405 onHVXCallbackChain(params);
rgrover1 737:79d95f9b93be 406 }
rgrover1 737:79d95f9b93be 407 }
rgrover1 737:79d95f9b93be 408
rgrover1 728:997ba5e7b3b6 409 protected:
vcoubard 1090:148d8b9b56a5 410 ReadCallbackChain_t onDataReadCallbackChain;
vcoubard 1090:148d8b9b56a5 411 WriteCallbackChain_t onDataWriteCallbackChain;
vcoubard 1090:148d8b9b56a5 412 HVXCallbackChain_t onHVXCallbackChain;
vcoubard 1090:148d8b9b56a5 413 GattClientShutdownCallbackChain_t shutdownCallChain;
rgrover1 728:997ba5e7b3b6 414
rgrover1 716:11b41f651697 415 private:
vcoubard 1048:efb29faf12fc 416 /* Disallow copy and assignment. */
rgrover1 716:11b41f651697 417 GattClient(const GattClient &);
rgrover1 716:11b41f651697 418 GattClient& operator=(const GattClient &);
rgrover1 716:11b41f651697 419 };
rgrover1 716:11b41f651697 420
rgrover1 716:11b41f651697 421 #endif // ifndef __GATT_CLIENT_H__