Marco Ferreira / BLE_API

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Fork of BLE_API by Bluetooth Low Energy

ble/GattServer.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:
1131:692ddf04fc42
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 710:b2e1a2660ec2 1 /* mbed Microcontroller Library
rgrover1 710:b2e1a2660ec2 2 * Copyright (c) 2006-2013 ARM Limited
rgrover1 710:b2e1a2660ec2 3 *
rgrover1 710:b2e1a2660ec2 4 * Licensed under the Apache License, Version 2.0 (the "License");
rgrover1 710:b2e1a2660ec2 5 * you may not use this file except in compliance with the License.
rgrover1 710:b2e1a2660ec2 6 * You may obtain a copy of the License at
rgrover1 710:b2e1a2660ec2 7 *
rgrover1 710:b2e1a2660ec2 8 * http://www.apache.org/licenses/LICENSE-2.0
rgrover1 710:b2e1a2660ec2 9 *
rgrover1 710:b2e1a2660ec2 10 * Unless required by applicable law or agreed to in writing, software
rgrover1 710:b2e1a2660ec2 11 * distributed under the License is distributed on an "AS IS" BASIS,
rgrover1 710:b2e1a2660ec2 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
rgrover1 710:b2e1a2660ec2 13 * See the License for the specific language governing permissions and
rgrover1 710:b2e1a2660ec2 14 * limitations under the License.
rgrover1 710:b2e1a2660ec2 15 */
rgrover1 710:b2e1a2660ec2 16
rgrover1 710:b2e1a2660ec2 17 #ifndef __GATT_SERVER_H__
rgrover1 710:b2e1a2660ec2 18 #define __GATT_SERVER_H__
rgrover1 710:b2e1a2660ec2 19
rgrover1 710:b2e1a2660ec2 20 #include "Gap.h"
rgrover1 710:b2e1a2660ec2 21 #include "GattService.h"
rgrover1 710:b2e1a2660ec2 22 #include "GattAttribute.h"
rgrover1 710:b2e1a2660ec2 23 #include "GattServerEvents.h"
rgrover1 710:b2e1a2660ec2 24 #include "GattCallbackParamTypes.h"
rgrover1 710:b2e1a2660ec2 25 #include "CallChainOfFunctionPointersWithContext.h"
rgrover1 710:b2e1a2660ec2 26
rgrover1 710:b2e1a2660ec2 27 class GattServer {
rgrover1 710:b2e1a2660ec2 28 public:
rgrover1 710:b2e1a2660ec2 29 /* Event callback handlers. */
vcoubard 1052:b55e1ad3e1b3 30 typedef FunctionPointerWithContext<unsigned> DataSentCallback_t;
vcoubard 1052:b55e1ad3e1b3 31 typedef CallChainOfFunctionPointersWithContext<unsigned> DataSentCallbackChain_t;
vcoubard 1052:b55e1ad3e1b3 32
vcoubard 1052:b55e1ad3e1b3 33 typedef FunctionPointerWithContext<const GattWriteCallbackParams*> DataWrittenCallback_t;
vcoubard 1084:40c1e518d6de 34 typedef CallChainOfFunctionPointersWithContext<const GattWriteCallbackParams*> DataWrittenCallbackChain_t;
vcoubard 1052:b55e1ad3e1b3 35
vcoubard 1052:b55e1ad3e1b3 36 typedef FunctionPointerWithContext<const GattReadCallbackParams*> DataReadCallback_t;
vcoubard 1052:b55e1ad3e1b3 37 typedef CallChainOfFunctionPointersWithContext<const GattReadCallbackParams *> DataReadCallbackChain_t;
vcoubard 1052:b55e1ad3e1b3 38
vcoubard 1090:148d8b9b56a5 39 typedef FunctionPointerWithContext<const GattServer *> GattServerShutdownCallback_t;
vcoubard 1090:148d8b9b56a5 40 typedef CallChainOfFunctionPointersWithContext<const GattServer *> GattServerShutdownCallbackChain_t;
vcoubard 1090:148d8b9b56a5 41
vcoubard 1052:b55e1ad3e1b3 42 typedef FunctionPointerWithContext<GattAttribute::Handle_t> EventCallback_t;
rgrover1 710:b2e1a2660ec2 43
rgrover1 710:b2e1a2660ec2 44 protected:
rgrover1 710:b2e1a2660ec2 45 GattServer() :
rgrover1 710:b2e1a2660ec2 46 serviceCount(0),
rgrover1 710:b2e1a2660ec2 47 characteristicCount(0),
rgrover1 710:b2e1a2660ec2 48 dataSentCallChain(),
rgrover1 710:b2e1a2660ec2 49 dataWrittenCallChain(),
rgrover1 710:b2e1a2660ec2 50 dataReadCallChain(),
rgrover1 710:b2e1a2660ec2 51 updatesEnabledCallback(NULL),
rgrover1 710:b2e1a2660ec2 52 updatesDisabledCallback(NULL),
rgrover1 710:b2e1a2660ec2 53 confirmationReceivedCallback(NULL) {
rgrover1 710:b2e1a2660ec2 54 /* empty */
rgrover1 710:b2e1a2660ec2 55 }
rgrover1 710:b2e1a2660ec2 56
rgrover1 710:b2e1a2660ec2 57 /*
rgrover1 710:b2e1a2660ec2 58 * The following functions are meant to be overridden in the platform-specific sub-class.
rgrover1 710:b2e1a2660ec2 59 */
rgrover1 710:b2e1a2660ec2 60 public:
rgrover1 710:b2e1a2660ec2 61
rgrover1 710:b2e1a2660ec2 62 /**
rgrover1 710:b2e1a2660ec2 63 * Add a service declaration to the local server ATT table. Also add the
rgrover1 710:b2e1a2660ec2 64 * characteristics contained within.
rgrover1 710:b2e1a2660ec2 65 */
rgrover1 734:4872b70437ce 66 virtual ble_error_t addService(GattService &service) {
vcoubard 1048:efb29faf12fc 67 /* Avoid compiler warnings about unused variables. */
rgrover1 734:4872b70437ce 68 (void)service;
rgrover1 734:4872b70437ce 69
vcoubard 1048:efb29faf12fc 70 return BLE_ERROR_NOT_IMPLEMENTED; /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 710:b2e1a2660ec2 71 }
rgrover1 710:b2e1a2660ec2 72
rgrover1 710:b2e1a2660ec2 73 /**
vcoubard 1048:efb29faf12fc 74 * Read the value of a characteristic from the local GATT server.
rgrover1 710:b2e1a2660ec2 75 * @param[in] attributeHandle
rgrover1 710:b2e1a2660ec2 76 * Attribute handle for the value attribute of the characteristic.
rgrover1 710:b2e1a2660ec2 77 * @param[out] buffer
rgrover1 710:b2e1a2660ec2 78 * A buffer to hold the value being read.
rgrover1 710:b2e1a2660ec2 79 * @param[in/out] lengthP
rgrover1 710:b2e1a2660ec2 80 * Length of the buffer being supplied. If the attribute
rgrover1 710:b2e1a2660ec2 81 * value is longer than the size of the supplied buffer,
rgrover1 710:b2e1a2660ec2 82 * this variable will hold upon return the total attribute value length
rgrover1 710:b2e1a2660ec2 83 * (excluding offset). The application may use this
rgrover1 710:b2e1a2660ec2 84 * information to allocate a suitable buffer size.
rgrover1 710:b2e1a2660ec2 85 *
rgrover1 710:b2e1a2660ec2 86 * @return BLE_ERROR_NONE if a value was read successfully into the buffer.
rgrover1 710:b2e1a2660ec2 87 */
rgrover1 710:b2e1a2660ec2 88 virtual ble_error_t read(GattAttribute::Handle_t attributeHandle, uint8_t buffer[], uint16_t *lengthP) {
vcoubard 1048:efb29faf12fc 89 /* Avoid compiler warnings about unused variables. */
rgrover1 734:4872b70437ce 90 (void)attributeHandle;
rgrover1 734:4872b70437ce 91 (void)buffer;
rgrover1 734:4872b70437ce 92 (void)lengthP;
rgrover1 734:4872b70437ce 93
vcoubard 1048:efb29faf12fc 94 return BLE_ERROR_NOT_IMPLEMENTED; /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 710:b2e1a2660ec2 95 }
rgrover1 710:b2e1a2660ec2 96
rgrover1 710:b2e1a2660ec2 97 /**
vcoubard 1048:efb29faf12fc 98 * Read the value of a characteristic from the local GATT server.
rgrover1 710:b2e1a2660ec2 99 * @param[in] connectionHandle
vcoubard 1048:efb29faf12fc 100 * Connection handle.
rgrover1 710:b2e1a2660ec2 101 * @param[in] attributeHandle
rgrover1 710:b2e1a2660ec2 102 * Attribute handle for the value attribute of the characteristic.
rgrover1 710:b2e1a2660ec2 103 * @param[out] buffer
rgrover1 710:b2e1a2660ec2 104 * A buffer to hold the value being read.
rgrover1 710:b2e1a2660ec2 105 * @param[in/out] lengthP
rgrover1 710:b2e1a2660ec2 106 * Length of the buffer being supplied. If the attribute
rgrover1 710:b2e1a2660ec2 107 * value is longer than the size of the supplied buffer,
rgrover1 710:b2e1a2660ec2 108 * this variable will hold upon return the total attribute value length
rgrover1 710:b2e1a2660ec2 109 * (excluding offset). The application may use this
rgrover1 710:b2e1a2660ec2 110 * information to allocate a suitable buffer size.
rgrover1 710:b2e1a2660ec2 111 *
rgrover1 710:b2e1a2660ec2 112 * @return BLE_ERROR_NONE if a value was read successfully into the buffer.
rgrover1 710:b2e1a2660ec2 113 *
vcoubard 1048:efb29faf12fc 114 * @note This API is a version of the above, with an additional connection handle
rgrover1 710:b2e1a2660ec2 115 * parameter to allow fetches for connection-specific multivalued
rgrover1 733:718a3566b4ce 116 * attributes (such as the CCCDs).
rgrover1 710:b2e1a2660ec2 117 */
rgrover1 710:b2e1a2660ec2 118 virtual ble_error_t read(Gap::Handle_t connectionHandle, GattAttribute::Handle_t attributeHandle, uint8_t *buffer, uint16_t *lengthP) {
vcoubard 1048:efb29faf12fc 119 /* Avoid compiler warnings about unused variables. */
rgrover1 734:4872b70437ce 120 (void)connectionHandle;
rgrover1 734:4872b70437ce 121 (void)attributeHandle;
rgrover1 734:4872b70437ce 122 (void)buffer;
rgrover1 734:4872b70437ce 123 (void)lengthP;
rgrover1 734:4872b70437ce 124
vcoubard 1048:efb29faf12fc 125 return BLE_ERROR_NOT_IMPLEMENTED; /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 710:b2e1a2660ec2 126 }
rgrover1 710:b2e1a2660ec2 127
rgrover1 710:b2e1a2660ec2 128 /**
vcoubard 1048:efb29faf12fc 129 * Update the value of a characteristic on the local GATT server.
rgrover1 710:b2e1a2660ec2 130 *
rgrover1 710:b2e1a2660ec2 131 * @param[in] attributeHandle
vcoubard 1048:efb29faf12fc 132 * Handle for the value attribute of the characteristic.
rgrover1 710:b2e1a2660ec2 133 * @param[in] value
vcoubard 1048:efb29faf12fc 134 * A pointer to a buffer holding the new value.
rgrover1 710:b2e1a2660ec2 135 * @param[in] size
rgrover1 710:b2e1a2660ec2 136 * Size of the new value (in bytes).
rgrover1 710:b2e1a2660ec2 137 * @param[in] localOnly
rgrover1 710:b2e1a2660ec2 138 * Should this update be kept on the local
vcoubard 1048:efb29faf12fc 139 * GATT server regardless of the state of the
rgrover1 710:b2e1a2660ec2 140 * notify/indicate flag in the CCCD for this
rgrover1 710:b2e1a2660ec2 141 * Characteristic? If set to true, no notification
rgrover1 710:b2e1a2660ec2 142 * or indication is generated.
rgrover1 710:b2e1a2660ec2 143 *
rgrover1 710:b2e1a2660ec2 144 * @return BLE_ERROR_NONE if we have successfully set the value of the attribute.
rgrover1 710:b2e1a2660ec2 145 */
rgrover1 734:4872b70437ce 146 virtual ble_error_t write(GattAttribute::Handle_t attributeHandle, const uint8_t *value, uint16_t size, bool localOnly = false) {
vcoubard 1048:efb29faf12fc 147 /* Avoid compiler warnings about unused variables. */
rgrover1 734:4872b70437ce 148 (void)attributeHandle;
rgrover1 734:4872b70437ce 149 (void)value;
rgrover1 734:4872b70437ce 150 (void)size;
rgrover1 734:4872b70437ce 151 (void)localOnly;
rgrover1 734:4872b70437ce 152
vcoubard 1048:efb29faf12fc 153 return BLE_ERROR_NOT_IMPLEMENTED; /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 710:b2e1a2660ec2 154 }
rgrover1 710:b2e1a2660ec2 155
rgrover1 710:b2e1a2660ec2 156 /**
vcoubard 1048:efb29faf12fc 157 * Update the value of a characteristic on the local GATT server. A version
vcoubard 1048:efb29faf12fc 158 * of the same as the above, with a connection handle parameter to allow updates
rgrover1 733:718a3566b4ce 159 * for connection-specific multivalued attributes (such as the CCCDs).
rgrover1 710:b2e1a2660ec2 160 *
rgrover1 710:b2e1a2660ec2 161 * @param[in] connectionHandle
vcoubard 1048:efb29faf12fc 162 * Connection handle.
rgrover1 710:b2e1a2660ec2 163 * @param[in] attributeHandle
vcoubard 1048:efb29faf12fc 164 * Handle for the value attribute of the characteristic.
rgrover1 710:b2e1a2660ec2 165 * @param[in] value
vcoubard 1048:efb29faf12fc 166 * A pointer to a buffer holding the new value.
rgrover1 710:b2e1a2660ec2 167 * @param[in] size
rgrover1 710:b2e1a2660ec2 168 * Size of the new value (in bytes).
rgrover1 710:b2e1a2660ec2 169 * @param[in] localOnly
rgrover1 710:b2e1a2660ec2 170 * Should this update be kept on the local
rgrover1 710:b2e1a2660ec2 171 * GattServer regardless of the state of the
rgrover1 710:b2e1a2660ec2 172 * notify/indicate flag in the CCCD for this
rgrover1 710:b2e1a2660ec2 173 * Characteristic? If set to true, no notification
rgrover1 710:b2e1a2660ec2 174 * or indication is generated.
rgrover1 710:b2e1a2660ec2 175 *
rgrover1 710:b2e1a2660ec2 176 * @return BLE_ERROR_NONE if we have successfully set the value of the attribute.
rgrover1 710:b2e1a2660ec2 177 */
rgrover1 734:4872b70437ce 178 virtual ble_error_t write(Gap::Handle_t connectionHandle, GattAttribute::Handle_t attributeHandle, const uint8_t *value, uint16_t size, bool localOnly = false) {
vcoubard 1048:efb29faf12fc 179 /* Avoid compiler warnings about unused variables. */
rgrover1 734:4872b70437ce 180 (void)connectionHandle;
rgrover1 734:4872b70437ce 181 (void)attributeHandle;
rgrover1 734:4872b70437ce 182 (void)value;
rgrover1 734:4872b70437ce 183 (void)size;
rgrover1 734:4872b70437ce 184 (void)localOnly;
rgrover1 734:4872b70437ce 185
vcoubard 1048:efb29faf12fc 186 return BLE_ERROR_NOT_IMPLEMENTED; /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 728:997ba5e7b3b6 187 }
rgrover1 728:997ba5e7b3b6 188
rgrover1 728:997ba5e7b3b6 189 /**
vcoubard 1048:efb29faf12fc 190 * Determine the updates-enabled status (notification or indication) for the current connection from a characteristic's CCCD.
rgrover1 728:997ba5e7b3b6 191 *
rgrover1 728:997ba5e7b3b6 192 * @param characteristic
vcoubard 1048:efb29faf12fc 193 * The characteristic.
rgrover1 728:997ba5e7b3b6 194 * @param[out] enabledP
rgrover1 728:997ba5e7b3b6 195 * Upon return, *enabledP is true if updates are enabled, else false.
rgrover1 728:997ba5e7b3b6 196 *
vcoubard 1048:efb29faf12fc 197 * @return BLE_ERROR_NONE if the connection and handle are found. False otherwise.
rgrover1 728:997ba5e7b3b6 198 */
rgrover1 728:997ba5e7b3b6 199 virtual ble_error_t areUpdatesEnabled(const GattCharacteristic &characteristic, bool *enabledP) {
vcoubard 1048:efb29faf12fc 200 /* Avoid compiler warnings about unused variables. */
rgrover1 734:4872b70437ce 201 (void)characteristic;
rgrover1 734:4872b70437ce 202 (void)enabledP;
rgrover1 734:4872b70437ce 203
vcoubard 1048:efb29faf12fc 204 return BLE_ERROR_NOT_IMPLEMENTED; /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 728:997ba5e7b3b6 205 }
rgrover1 728:997ba5e7b3b6 206
rgrover1 728:997ba5e7b3b6 207 /**
vcoubard 1048:efb29faf12fc 208 * Determine the connection-specific updates-enabled status (notification or indication) from a characteristic's CCCD.
rgrover1 728:997ba5e7b3b6 209 *
rgrover1 728:997ba5e7b3b6 210 * @param connectionHandle
vcoubard 1048:efb29faf12fc 211 * The connection handle.
rgrover1 728:997ba5e7b3b6 212 * @param[out] enabledP
rgrover1 728:997ba5e7b3b6 213 * Upon return, *enabledP is true if updates are enabled, else false.
rgrover1 728:997ba5e7b3b6 214 *
rgrover1 728:997ba5e7b3b6 215 * @param characteristic
vcoubard 1048:efb29faf12fc 216 * The characteristic.
rgrover1 728:997ba5e7b3b6 217 *
vcoubard 1048:efb29faf12fc 218 * @return BLE_ERROR_NONE if the connection and handle are found. False otherwise.
rgrover1 728:997ba5e7b3b6 219 */
rgrover1 728:997ba5e7b3b6 220 virtual ble_error_t areUpdatesEnabled(Gap::Handle_t connectionHandle, const GattCharacteristic &characteristic, bool *enabledP) {
vcoubard 1048:efb29faf12fc 221 /* Avoid compiler warnings about unused variables. */
rgrover1 734:4872b70437ce 222 (void)connectionHandle;
rgrover1 734:4872b70437ce 223 (void)characteristic;
rgrover1 734:4872b70437ce 224 (void)enabledP;
rgrover1 734:4872b70437ce 225
vcoubard 1048:efb29faf12fc 226 return BLE_ERROR_NOT_IMPLEMENTED; /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 724:80e065731d70 227 }
rgrover1 724:80e065731d70 228
rgrover1 724:80e065731d70 229 /**
rgrover1 710:b2e1a2660ec2 230 * A virtual function to allow underlying stacks to indicate if they support
rgrover1 710:b2e1a2660ec2 231 * onDataRead(). It should be overridden to return true as applicable.
rgrover1 710:b2e1a2660ec2 232 */
rgrover1 710:b2e1a2660ec2 233 virtual bool isOnDataReadAvailable() const {
vcoubard 1048:efb29faf12fc 234 return false; /* Requesting action from porters: override this API if this capability is supported. */
rgrover1 710:b2e1a2660ec2 235 }
rgrover1 710:b2e1a2660ec2 236
rgrover1 710:b2e1a2660ec2 237 /*
rgrover1 710:b2e1a2660ec2 238 * APIs with non-virtual implementations.
rgrover1 710:b2e1a2660ec2 239 */
rgrover1 710:b2e1a2660ec2 240 public:
rgrover1 710:b2e1a2660ec2 241 /**
rgrover1 710:b2e1a2660ec2 242 * Add a callback for the GATT event DATA_SENT (which is triggered when
rgrover1 710:b2e1a2660ec2 243 * updates are sent out by GATT in the form of notifications).
rgrover1 710:b2e1a2660ec2 244 *
vcoubard 1048:efb29faf12fc 245 * @Note: It is possible to chain together multiple onDataSent callbacks
rgrover1 710:b2e1a2660ec2 246 * (potentially from different modules of an application) to receive updates
rgrover1 710:b2e1a2660ec2 247 * to characteristics.
rgrover1 710:b2e1a2660ec2 248 *
vcoubard 1048:efb29faf12fc 249 * @Note: It is also possible to set up a callback into a member function of
rgrover1 710:b2e1a2660ec2 250 * some object.
rgrover1 710:b2e1a2660ec2 251 */
vcoubard 1052:b55e1ad3e1b3 252 void onDataSent(const DataSentCallback_t& callback) {dataSentCallChain.add(callback);}
rgrover1 710:b2e1a2660ec2 253 template <typename T>
rgrover1 710:b2e1a2660ec2 254 void onDataSent(T *objPtr, void (T::*memberPtr)(unsigned count)) {
rgrover1 710:b2e1a2660ec2 255 dataSentCallChain.add(objPtr, memberPtr);
rgrover1 710:b2e1a2660ec2 256 }
rgrover1 710:b2e1a2660ec2 257
rgrover1 710:b2e1a2660ec2 258 /**
vcoubard 1084:40c1e518d6de 259 * @brief get the callback chain called when the event DATA_EVENT is triggered.
vcoubard 1052:b55e1ad3e1b3 260 */
vcoubard 1084:40c1e518d6de 261 DataSentCallbackChain_t& onDataSent() {
vcoubard 1052:b55e1ad3e1b3 262 return dataSentCallChain;
vcoubard 1052:b55e1ad3e1b3 263 }
vcoubard 1052:b55e1ad3e1b3 264
vcoubard 1052:b55e1ad3e1b3 265 /**
vcoubard 1048:efb29faf12fc 266 * Set up a callback for when an attribute has its value updated by or at the
vcoubard 1048:efb29faf12fc 267 * connected peer. For a peripheral, this callback is triggered when the local
rgrover1 710:b2e1a2660ec2 268 * GATT server has an attribute updated by a write command from the peer.
vcoubard 1048:efb29faf12fc 269 * For a central, this callback is triggered when a response is received for
rgrover1 710:b2e1a2660ec2 270 * a write request.
rgrover1 710:b2e1a2660ec2 271 *
vcoubard 1048:efb29faf12fc 272 * @Note: It is possible to chain together multiple onDataWritten callbacks
rgrover1 710:b2e1a2660ec2 273 * (potentially from different modules of an application) to receive updates
vcoubard 1048:efb29faf12fc 274 * to characteristics. Many services, such as DFU and UART, add their own
rgrover1 710:b2e1a2660ec2 275 * onDataWritten callbacks behind the scenes to trap interesting events.
rgrover1 710:b2e1a2660ec2 276 *
vcoubard 1048:efb29faf12fc 277 * @Note: It is also possible to set up a callback into a member function of
rgrover1 710:b2e1a2660ec2 278 * some object.
vcoubard 1084:40c1e518d6de 279 *
vcoubard 1052:b55e1ad3e1b3 280 * @Note It is possible to unregister a callback using onDataWritten().detach(callback)
rgrover1 710:b2e1a2660ec2 281 */
vcoubard 1052:b55e1ad3e1b3 282 void onDataWritten(const DataWrittenCallback_t& callback) {dataWrittenCallChain.add(callback);}
rgrover1 710:b2e1a2660ec2 283 template <typename T>
rgrover1 710:b2e1a2660ec2 284 void onDataWritten(T *objPtr, void (T::*memberPtr)(const GattWriteCallbackParams *context)) {
rgrover1 710:b2e1a2660ec2 285 dataWrittenCallChain.add(objPtr, memberPtr);
rgrover1 710:b2e1a2660ec2 286 }
rgrover1 710:b2e1a2660ec2 287
rgrover1 710:b2e1a2660ec2 288 /**
vcoubard 1052:b55e1ad3e1b3 289 * @brief provide access to the callchain of data written event callbacks
vcoubard 1052:b55e1ad3e1b3 290 * It is possible to register callbacks using onDataWritten().add(callback);
vcoubard 1084:40c1e518d6de 291 * It is possible to unregister callbacks using onDataWritten().detach(callback)
vcoubard 1052:b55e1ad3e1b3 292 * @return The data written event callbacks chain
vcoubard 1084:40c1e518d6de 293 */
vcoubard 1052:b55e1ad3e1b3 294 DataWrittenCallbackChain_t& onDataWritten() {
vcoubard 1052:b55e1ad3e1b3 295 return dataWrittenCallChain;
vcoubard 1052:b55e1ad3e1b3 296 }
vcoubard 1052:b55e1ad3e1b3 297
vcoubard 1052:b55e1ad3e1b3 298 /**
rgrover1 710:b2e1a2660ec2 299 * Setup a callback to be invoked on the peripheral when an attribute is
rgrover1 710:b2e1a2660ec2 300 * being read by a remote client.
rgrover1 710:b2e1a2660ec2 301 *
vcoubard 1048:efb29faf12fc 302 * @Note: This functionality may not be available on all underlying stacks.
rgrover1 710:b2e1a2660ec2 303 * You could use GattCharacteristic::setReadAuthorizationCallback() as an
rgrover1 826:00415ff9e2a7 304 * alternative. Refer to isOnDataReadAvailable().
rgrover1 710:b2e1a2660ec2 305 *
vcoubard 1048:efb29faf12fc 306 * @Note: It is possible to chain together multiple onDataRead callbacks
rgrover1 710:b2e1a2660ec2 307 * (potentially from different modules of an application) to receive updates
rgrover1 710:b2e1a2660ec2 308 * to characteristics. Services may add their own onDataRead callbacks
rgrover1 710:b2e1a2660ec2 309 * behind the scenes to trap interesting events.
rgrover1 710:b2e1a2660ec2 310 *
vcoubard 1048:efb29faf12fc 311 * @Note: It is also possible to set up a callback into a member function of
rgrover1 710:b2e1a2660ec2 312 * some object.
rgrover1 710:b2e1a2660ec2 313 *
vcoubard 1052:b55e1ad3e1b3 314 * @Note It is possible to unregister a callback using onDataRead().detach(callback)
vcoubard 1052:b55e1ad3e1b3 315 *
rgrover1 710:b2e1a2660ec2 316 * @return BLE_ERROR_NOT_IMPLEMENTED if this functionality isn't available;
rgrover1 710:b2e1a2660ec2 317 * else BLE_ERROR_NONE.
rgrover1 710:b2e1a2660ec2 318 */
vcoubard 1052:b55e1ad3e1b3 319 ble_error_t onDataRead(const DataReadCallback_t& callback) {
rgrover1 710:b2e1a2660ec2 320 if (!isOnDataReadAvailable()) {
rgrover1 710:b2e1a2660ec2 321 return BLE_ERROR_NOT_IMPLEMENTED;
rgrover1 710:b2e1a2660ec2 322 }
rgrover1 710:b2e1a2660ec2 323
rgrover1 710:b2e1a2660ec2 324 dataReadCallChain.add(callback);
rgrover1 710:b2e1a2660ec2 325 return BLE_ERROR_NONE;
rgrover1 710:b2e1a2660ec2 326 }
rgrover1 710:b2e1a2660ec2 327 template <typename T>
rgrover1 710:b2e1a2660ec2 328 ble_error_t onDataRead(T *objPtr, void (T::*memberPtr)(const GattReadCallbackParams *context)) {
rgrover1 710:b2e1a2660ec2 329 if (!isOnDataReadAvailable()) {
rgrover1 710:b2e1a2660ec2 330 return BLE_ERROR_NOT_IMPLEMENTED;
rgrover1 710:b2e1a2660ec2 331 }
rgrover1 710:b2e1a2660ec2 332
rgrover1 710:b2e1a2660ec2 333 dataReadCallChain.add(objPtr, memberPtr);
rgrover1 710:b2e1a2660ec2 334 return BLE_ERROR_NONE;
rgrover1 710:b2e1a2660ec2 335 }
rgrover1 710:b2e1a2660ec2 336
rgrover1 710:b2e1a2660ec2 337 /**
vcoubard 1052:b55e1ad3e1b3 338 * @brief provide access to the callchain of data read event callbacks
vcoubard 1052:b55e1ad3e1b3 339 * It is possible to register callbacks using onDataRead().add(callback);
vcoubard 1084:40c1e518d6de 340 * It is possible to unregister callbacks using onDataRead().detach(callback)
vcoubard 1052:b55e1ad3e1b3 341 * @return The data read event callbacks chain
vcoubard 1052:b55e1ad3e1b3 342 */
vcoubard 1052:b55e1ad3e1b3 343 DataReadCallbackChain_t& onDataRead() {
vcoubard 1052:b55e1ad3e1b3 344 return dataReadCallChain;
vcoubard 1052:b55e1ad3e1b3 345 }
vcoubard 1052:b55e1ad3e1b3 346
vcoubard 1052:b55e1ad3e1b3 347 /**
vcoubard 1090:148d8b9b56a5 348 * Setup a callback to be invoked to notify the user application that the
vcoubard 1090:148d8b9b56a5 349 * GattServer instance is about to shutdown (possibly as a result of a call
vcoubard 1090:148d8b9b56a5 350 * to BLE::shutdown()).
vcoubard 1090:148d8b9b56a5 351 *
vcoubard 1090:148d8b9b56a5 352 * @Note: It is possible to chain together multiple onShutdown callbacks
vcoubard 1090:148d8b9b56a5 353 * (potentially from different modules of an application) to be notified
vcoubard 1090:148d8b9b56a5 354 * before the GattServer is shutdown.
vcoubard 1090:148d8b9b56a5 355 *
vcoubard 1090:148d8b9b56a5 356 * @Note: It is also possible to set up a callback into a member function of
vcoubard 1090:148d8b9b56a5 357 * some object.
vcoubard 1090:148d8b9b56a5 358 *
vcoubard 1090:148d8b9b56a5 359 * @Note It is possible to unregister a callback using onShutdown().detach(callback)
vcoubard 1090:148d8b9b56a5 360 */
vcoubard 1090:148d8b9b56a5 361 void onShutdown(const GattServerShutdownCallback_t& callback) {
vcoubard 1090:148d8b9b56a5 362 shutdownCallChain.add(callback);
vcoubard 1090:148d8b9b56a5 363 }
vcoubard 1090:148d8b9b56a5 364 template <typename T>
vcoubard 1090:148d8b9b56a5 365 void onShutdown(T *objPtr, void (T::*memberPtr)(void)) {
vcoubard 1090:148d8b9b56a5 366 shutdownCallChain.add(objPtr, memberPtr);
vcoubard 1090:148d8b9b56a5 367 }
vcoubard 1090:148d8b9b56a5 368
vcoubard 1090:148d8b9b56a5 369 /**
vcoubard 1090:148d8b9b56a5 370 * @brief provide access to the callchain of shutdown event callbacks
vcoubard 1090:148d8b9b56a5 371 * It is possible to register callbacks using onShutdown().add(callback);
vcoubard 1090:148d8b9b56a5 372 * It is possible to unregister callbacks using onShutdown().detach(callback)
vcoubard 1090:148d8b9b56a5 373 * @return The shutdown event callbacks chain
vcoubard 1090:148d8b9b56a5 374 */
vcoubard 1090:148d8b9b56a5 375 GattServerShutdownCallbackChain_t& onShutdown() {
vcoubard 1090:148d8b9b56a5 376 return shutdownCallChain;
vcoubard 1090:148d8b9b56a5 377 }
vcoubard 1090:148d8b9b56a5 378
vcoubard 1090:148d8b9b56a5 379 /**
vcoubard 1048:efb29faf12fc 380 * Set up a callback for when notifications or indications are enabled for a
vcoubard 1048:efb29faf12fc 381 * characteristic on the local GATT server.
rgrover1 710:b2e1a2660ec2 382 */
rgrover1 710:b2e1a2660ec2 383 void onUpdatesEnabled(EventCallback_t callback) {updatesEnabledCallback = callback;}
rgrover1 710:b2e1a2660ec2 384
rgrover1 710:b2e1a2660ec2 385 /**
vcoubard 1048:efb29faf12fc 386 * Set up a callback for when notifications or indications are disabled for a
vcoubard 1048:efb29faf12fc 387 * characteristic on the local GATT server.
rgrover1 710:b2e1a2660ec2 388 */
rgrover1 710:b2e1a2660ec2 389 void onUpdatesDisabled(EventCallback_t callback) {updatesDisabledCallback = callback;}
rgrover1 710:b2e1a2660ec2 390
rgrover1 710:b2e1a2660ec2 391 /**
vcoubard 1048:efb29faf12fc 392 * Set up a callback for when the GATT server receives a response for an
rgrover1 710:b2e1a2660ec2 393 * indication event sent previously.
rgrover1 710:b2e1a2660ec2 394 */
rgrover1 710:b2e1a2660ec2 395 void onConfirmationReceived(EventCallback_t callback) {confirmationReceivedCallback = callback;}
rgrover1 710:b2e1a2660ec2 396
rgrover1 710:b2e1a2660ec2 397 /* Entry points for the underlying stack to report events back to the user. */
rgrover1 710:b2e1a2660ec2 398 protected:
rgrover1 710:b2e1a2660ec2 399 void handleDataWrittenEvent(const GattWriteCallbackParams *params) {
vcoubard 1052:b55e1ad3e1b3 400 dataWrittenCallChain.call(params);
rgrover1 710:b2e1a2660ec2 401 }
rgrover1 710:b2e1a2660ec2 402
rgrover1 710:b2e1a2660ec2 403 void handleDataReadEvent(const GattReadCallbackParams *params) {
vcoubard 1052:b55e1ad3e1b3 404 dataReadCallChain.call(params);
rgrover1 710:b2e1a2660ec2 405 }
rgrover1 710:b2e1a2660ec2 406
rgrover1 728:997ba5e7b3b6 407 void handleEvent(GattServerEvents::gattEvent_e type, GattAttribute::Handle_t attributeHandle) {
rgrover1 710:b2e1a2660ec2 408 switch (type) {
rgrover1 710:b2e1a2660ec2 409 case GattServerEvents::GATT_EVENT_UPDATES_ENABLED:
rgrover1 710:b2e1a2660ec2 410 if (updatesEnabledCallback) {
rgrover1 728:997ba5e7b3b6 411 updatesEnabledCallback(attributeHandle);
rgrover1 710:b2e1a2660ec2 412 }
rgrover1 710:b2e1a2660ec2 413 break;
rgrover1 710:b2e1a2660ec2 414 case GattServerEvents::GATT_EVENT_UPDATES_DISABLED:
rgrover1 710:b2e1a2660ec2 415 if (updatesDisabledCallback) {
rgrover1 728:997ba5e7b3b6 416 updatesDisabledCallback(attributeHandle);
rgrover1 710:b2e1a2660ec2 417 }
rgrover1 710:b2e1a2660ec2 418 break;
rgrover1 710:b2e1a2660ec2 419 case GattServerEvents::GATT_EVENT_CONFIRMATION_RECEIVED:
rgrover1 710:b2e1a2660ec2 420 if (confirmationReceivedCallback) {
rgrover1 728:997ba5e7b3b6 421 confirmationReceivedCallback(attributeHandle);
rgrover1 710:b2e1a2660ec2 422 }
rgrover1 710:b2e1a2660ec2 423 break;
rgrover1 710:b2e1a2660ec2 424 default:
rgrover1 710:b2e1a2660ec2 425 break;
rgrover1 710:b2e1a2660ec2 426 }
rgrover1 710:b2e1a2660ec2 427 }
rgrover1 710:b2e1a2660ec2 428
rgrover1 710:b2e1a2660ec2 429 void handleDataSentEvent(unsigned count) {
vcoubard 1052:b55e1ad3e1b3 430 dataSentCallChain.call(count);
rgrover1 710:b2e1a2660ec2 431 }
rgrover1 710:b2e1a2660ec2 432
vcoubard 1082:127667021827 433 public:
vcoubard 1082:127667021827 434 /**
vcoubard 1090:148d8b9b56a5 435 * Notify all registered onShutdown callbacks that the GattServer is
vcoubard 1090:148d8b9b56a5 436 * about to be shutdown and clear all GattServer state of the
vcoubard 1090:148d8b9b56a5 437 * associated object.
vcoubard 1082:127667021827 438 *
vcoubard 1082:127667021827 439 * This function is meant to be overridden in the platform-specific
vcoubard 1082:127667021827 440 * sub-class. Nevertheless, the sub-class is only expected to reset its
vcoubard 1082:127667021827 441 * state and not the data held in GattServer members. This shall be achieved
vcoubard 1082:127667021827 442 * by a call to GattServer::reset() from the sub-class' reset()
vcoubard 1082:127667021827 443 * implementation.
vcoubard 1082:127667021827 444 *
vcoubard 1082:127667021827 445 * @return BLE_ERROR_NONE on success.
vcoubard 1082:127667021827 446 */
vcoubard 1082:127667021827 447 virtual ble_error_t reset(void) {
vcoubard 1090:148d8b9b56a5 448 /* Notify that the instance is about to shutdown */
vcoubard 1090:148d8b9b56a5 449 shutdownCallChain.call(this);
vcoubard 1090:148d8b9b56a5 450 shutdownCallChain.clear();
vcoubard 1090:148d8b9b56a5 451
vcoubard 1090:148d8b9b56a5 452 serviceCount = 0;
vcoubard 1082:127667021827 453 characteristicCount = 0;
vcoubard 1082:127667021827 454
vcoubard 1082:127667021827 455 dataSentCallChain.clear();
vcoubard 1082:127667021827 456 dataWrittenCallChain.clear();
vcoubard 1082:127667021827 457 dataReadCallChain.clear();
vcoubard 1084:40c1e518d6de 458 updatesEnabledCallback = NULL;
vcoubard 1084:40c1e518d6de 459 updatesDisabledCallback = NULL;
vcoubard 1082:127667021827 460 confirmationReceivedCallback = NULL;
vcoubard 1082:127667021827 461
vcoubard 1082:127667021827 462 return BLE_ERROR_NONE;
vcoubard 1082:127667021827 463 }
vcoubard 1082:127667021827 464
rgrover1 710:b2e1a2660ec2 465 protected:
rgrover1 710:b2e1a2660ec2 466 uint8_t serviceCount;
rgrover1 710:b2e1a2660ec2 467 uint8_t characteristicCount;
rgrover1 710:b2e1a2660ec2 468
rgrover1 710:b2e1a2660ec2 469 private:
vcoubard 1090:148d8b9b56a5 470 DataSentCallbackChain_t dataSentCallChain;
vcoubard 1090:148d8b9b56a5 471 DataWrittenCallbackChain_t dataWrittenCallChain;
vcoubard 1090:148d8b9b56a5 472 DataReadCallbackChain_t dataReadCallChain;
vcoubard 1090:148d8b9b56a5 473 GattServerShutdownCallbackChain_t shutdownCallChain;
vcoubard 1090:148d8b9b56a5 474 EventCallback_t updatesEnabledCallback;
vcoubard 1090:148d8b9b56a5 475 EventCallback_t updatesDisabledCallback;
vcoubard 1090:148d8b9b56a5 476 EventCallback_t confirmationReceivedCallback;
rgrover1 710:b2e1a2660ec2 477
rgrover1 710:b2e1a2660ec2 478 private:
vcoubard 1048:efb29faf12fc 479 /* Disallow copy and assignment. */
rgrover1 710:b2e1a2660ec2 480 GattServer(const GattServer &);
rgrover1 710:b2e1a2660ec2 481 GattServer& operator=(const GattServer &);
rgrover1 710:b2e1a2660ec2 482 };
rgrover1 710:b2e1a2660ec2 483
rgrover1 710:b2e1a2660ec2 484 #endif // ifndef __GATT_SERVER_H__