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ble/GattClient.h@1062:a3fd424b73ca, 2016-01-11 (annotated)
- Committer:
- vcoubard
- Date:
- Mon Jan 11 08:51:37 2016 +0000
- Revision:
- 1062:a3fd424b73ca
- Parent:
- 1053:ec4a5b9b254e
- Child:
- 1063:187f9929cb60
Synchronized with git rev b817cf3e
Author: Andres Amaya Garcia
Improve API to facilitate full shutdown procedure
The BLE API exposes a shutdown() function in BLE.h. This function is meant to
be overwridden by platform-specific sub-classes to clear all GAP and GATT
state. However, from the platform-specific implementation it is dificult to
achieve this because the Gap, GattClient, GattServer and SecurityManager
components of the API do not expose any functionality to shutdown.
This commit introduces the following changes:
* Add a static member pointer to Gap, GattClient, GattServer and
SecurityManager that is used to keep track of the initialized objects.
* Add a function member cleanup() to Gap, GattClient, GattServer and
SecurityManager to allow easy reset of the instance's state. This function
is meant to be overriden and called from the derived classes to fully clear the
state of the BLE API and the platform-specific implementation.
* Add a static member function shutdown() to Gap, GattClient, GattServer and
SecurityManager. This function shall be called from the shutdown()
overriding BLE::shutdown() for Gap, GattClient, GattServer and SecurityManager
that will in-turn clear the state of each of the components.
**NOTE:** Platform-specific implementations of this API must be modified to
this changes into account.
Who changed what in which revision?
User | Revision | Line number | New 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 | |
rgrover1 | 716:11b41f651697 | 44 | /* |
rgrover1 | 716:11b41f651697 | 45 | * The following functions are meant to be overridden in the platform-specific sub-class. |
rgrover1 | 716:11b41f651697 | 46 | */ |
rgrover1 | 716:11b41f651697 | 47 | public: |
rgrover1 | 716:11b41f651697 | 48 | /** |
rgrover1 | 728:997ba5e7b3b6 | 49 | * Launch service discovery. Once launched, application callbacks will be |
vcoubard | 1048:efb29faf12fc | 50 | * invoked for matching services or characteristics. isServiceDiscoveryActive() |
vcoubard | 1048:efb29faf12fc | 51 | * can be used to determine status, and a termination callback (if one was set up) |
vcoubard | 1048:efb29faf12fc | 52 | * will be invoked at the end. Service discovery can be terminated prematurely, |
vcoubard | 1048:efb29faf12fc | 53 | * if needed, using terminateServiceDiscovery(). |
rgrover1 | 716:11b41f651697 | 54 | * |
rgrover1 | 716:11b41f651697 | 55 | * @param connectionHandle |
rgrover1 | 716:11b41f651697 | 56 | * Handle for the connection with the peer. |
rgrover1 | 716:11b41f651697 | 57 | * @param sc |
vcoubard | 1048:efb29faf12fc | 58 | * This is the application callback for a matching service. Taken as |
rgrover1 | 716:11b41f651697 | 59 | * NULL by default. Note: service discovery may still be active |
rgrover1 | 716:11b41f651697 | 60 | * when this callback is issued; calling asynchronous BLE-stack |
rgrover1 | 716:11b41f651697 | 61 | * APIs from within this application callback might cause the |
rgrover1 | 716:11b41f651697 | 62 | * stack to abort service discovery. If this becomes an issue, it |
vcoubard | 1048:efb29faf12fc | 63 | * may be better to make a local copy of the discoveredService and |
rgrover1 | 716:11b41f651697 | 64 | * wait for service discovery to terminate before operating on the |
rgrover1 | 716:11b41f651697 | 65 | * service. |
rgrover1 | 716:11b41f651697 | 66 | * @param cc |
vcoubard | 1048:efb29faf12fc | 67 | * This is the application callback for a matching characteristic. |
rgrover1 | 716:11b41f651697 | 68 | * Taken as NULL by default. Note: service discovery may still be |
rgrover1 | 716:11b41f651697 | 69 | * active when this callback is issued; calling asynchronous |
rgrover1 | 716:11b41f651697 | 70 | * BLE-stack APIs from within this application callback might cause |
rgrover1 | 716:11b41f651697 | 71 | * the stack to abort service discovery. If this becomes an issue, |
vcoubard | 1048:efb29faf12fc | 72 | * it may be better to make a local copy of the discoveredCharacteristic |
rgrover1 | 716:11b41f651697 | 73 | * and wait for service discovery to terminate before operating on the |
rgrover1 | 716:11b41f651697 | 74 | * characteristic. |
rgrover1 | 716:11b41f651697 | 75 | * @param matchingServiceUUID |
vcoubard | 1048:efb29faf12fc | 76 | * UUID-based filter for specifying a service in which the application is |
rgrover1 | 716:11b41f651697 | 77 | * interested. By default it is set as the wildcard UUID_UNKNOWN, |
rgrover1 | 716:11b41f651697 | 78 | * in which case it matches all services. If characteristic-UUID |
rgrover1 | 716:11b41f651697 | 79 | * filter (below) is set to the wildcard value, then a service |
rgrover1 | 716:11b41f651697 | 80 | * callback will be invoked for the matching service (or for every |
rgrover1 | 716:11b41f651697 | 81 | * service if the service filter is a wildcard). |
rgrover1 | 716:11b41f651697 | 82 | * @param matchingCharacteristicUUIDIn |
vcoubard | 1048:efb29faf12fc | 83 | * UUID-based filter for specifying characteristic in which the application |
rgrover1 | 716:11b41f651697 | 84 | * is interested. By default it is set as the wildcard UUID_UKNOWN |
rgrover1 | 716:11b41f651697 | 85 | * to match against any characteristic. If both service-UUID |
vcoubard | 1048:efb29faf12fc | 86 | * filter and characteristic-UUID filter are used with non-wildcard |
rgrover1 | 716:11b41f651697 | 87 | * values, then only a single characteristic callback is |
rgrover1 | 716:11b41f651697 | 88 | * invoked for the matching characteristic. |
rgrover1 | 716:11b41f651697 | 89 | * |
rgrover1 | 716:11b41f651697 | 90 | * @note Using wildcard values for both service-UUID and characteristic- |
vcoubard | 1048:efb29faf12fc | 91 | * UUID will result in complete service discovery: callbacks being |
rgrover1 | 716:11b41f651697 | 92 | * called for every service and characteristic. |
rgrover1 | 716:11b41f651697 | 93 | * |
rgrover1 | 716:11b41f651697 | 94 | * @note Providing NULL for the characteristic callback will result in |
rgrover1 | 716:11b41f651697 | 95 | * characteristic discovery being skipped for each matching |
rgrover1 | 716:11b41f651697 | 96 | * service. This allows for an inexpensive method to discover only |
rgrover1 | 716:11b41f651697 | 97 | * services. |
rgrover1 | 716:11b41f651697 | 98 | * |
rgrover1 | 716:11b41f651697 | 99 | * @return |
rgrover1 | 716:11b41f651697 | 100 | * BLE_ERROR_NONE if service discovery is launched successfully; else an appropriate error. |
rgrover1 | 716:11b41f651697 | 101 | */ |
rgrover1 | 716:11b41f651697 | 102 | virtual ble_error_t launchServiceDiscovery(Gap::Handle_t connectionHandle, |
rgrover1 | 716:11b41f651697 | 103 | ServiceDiscovery::ServiceCallback_t sc = NULL, |
rgrover1 | 716:11b41f651697 | 104 | ServiceDiscovery::CharacteristicCallback_t cc = NULL, |
rgrover1 | 716:11b41f651697 | 105 | const UUID &matchingServiceUUID = UUID::ShortUUIDBytes_t(BLE_UUID_UNKNOWN), |
rgrover1 | 716:11b41f651697 | 106 | const UUID &matchingCharacteristicUUIDIn = UUID::ShortUUIDBytes_t(BLE_UUID_UNKNOWN)) { |
vcoubard | 1048:efb29faf12fc | 107 | /* Avoid compiler warnings about unused variables. */ |
rgrover1 | 734:4872b70437ce | 108 | (void)connectionHandle; |
rgrover1 | 734:4872b70437ce | 109 | (void)sc; |
rgrover1 | 734:4872b70437ce | 110 | (void)cc; |
rgrover1 | 734:4872b70437ce | 111 | (void)matchingServiceUUID; |
rgrover1 | 734:4872b70437ce | 112 | (void)matchingCharacteristicUUIDIn; |
rgrover1 | 734:4872b70437ce | 113 | |
vcoubard | 1048:efb29faf12fc | 114 | return BLE_ERROR_NOT_IMPLEMENTED; /* Requesting action from porters: override this API if this capability is supported. */ |
rgrover1 | 716:11b41f651697 | 115 | } |
rgrover1 | 716:11b41f651697 | 116 | |
rgrover1 | 716:11b41f651697 | 117 | /** |
rgrover1 | 716:11b41f651697 | 118 | * Launch service discovery for services. Once launched, service discovery will remain |
rgrover1 | 716:11b41f651697 | 119 | * active with service-callbacks being issued back into the application for matching |
rgrover1 | 716:11b41f651697 | 120 | * services. isServiceDiscoveryActive() can be used to |
vcoubard | 1048:efb29faf12fc | 121 | * determine status, and a termination callback (if set up) will be invoked |
vcoubard | 1048:efb29faf12fc | 122 | * at the end. Service discovery can be terminated prematurely, if needed, |
rgrover1 | 716:11b41f651697 | 123 | * using terminateServiceDiscovery(). |
rgrover1 | 716:11b41f651697 | 124 | * |
rgrover1 | 716:11b41f651697 | 125 | * @param connectionHandle |
rgrover1 | 716:11b41f651697 | 126 | * Handle for the connection with the peer. |
rgrover1 | 716:11b41f651697 | 127 | * @param sc |
vcoubard | 1048:efb29faf12fc | 128 | * This is the application callback for a matching service. Note: service discovery may still be active |
rgrover1 | 716:11b41f651697 | 129 | * when this callback is issued; calling asynchronous BLE-stack |
rgrover1 | 716:11b41f651697 | 130 | * APIs from within this application callback might cause the |
rgrover1 | 716:11b41f651697 | 131 | * stack to abort service discovery. If this becomes an issue, it |
vcoubard | 1048:efb29faf12fc | 132 | * may be better to make a local copy of the discoveredService and |
rgrover1 | 716:11b41f651697 | 133 | * wait for service discovery to terminate before operating on the |
rgrover1 | 716:11b41f651697 | 134 | * service. |
rgrover1 | 716:11b41f651697 | 135 | * @param matchingServiceUUID |
vcoubard | 1048:efb29faf12fc | 136 | * UUID-based filter for specifying a service in which the application is |
rgrover1 | 716:11b41f651697 | 137 | * interested. By default it is set as the wildcard UUID_UNKNOWN, |
rgrover1 | 716:11b41f651697 | 138 | * in which case it matches all services. |
rgrover1 | 716:11b41f651697 | 139 | * |
rgrover1 | 716:11b41f651697 | 140 | * @return |
rgrover1 | 716:11b41f651697 | 141 | * BLE_ERROR_NONE if service discovery is launched successfully; else an appropriate error. |
rgrover1 | 716:11b41f651697 | 142 | */ |
rgrover1 | 716:11b41f651697 | 143 | virtual ble_error_t discoverServices(Gap::Handle_t connectionHandle, |
rgrover1 | 716:11b41f651697 | 144 | ServiceDiscovery::ServiceCallback_t callback, |
rgrover1 | 716:11b41f651697 | 145 | const UUID &matchingServiceUUID = UUID::ShortUUIDBytes_t(BLE_UUID_UNKNOWN)) { |
rgrover1 | 742:861ed7eb186d | 146 | return launchServiceDiscovery(connectionHandle, callback, NULL, matchingServiceUUID); /* We take advantage of the property |
rgrover1 | 742:861ed7eb186d | 147 | * that providing NULL for the characteristic callback will result in |
rgrover1 | 742:861ed7eb186d | 148 | * characteristic discovery being skipped for each matching |
rgrover1 | 742:861ed7eb186d | 149 | * service. This allows for an inexpensive method to discover only |
vcoubard | 1048:efb29faf12fc | 150 | * services. Porters are free to override this. */ |
rgrover1 | 716:11b41f651697 | 151 | } |
rgrover1 | 716:11b41f651697 | 152 | |
rgrover1 | 716:11b41f651697 | 153 | /** |
rgrover1 | 716:11b41f651697 | 154 | * Launch service discovery for services. Once launched, service discovery will remain |
rgrover1 | 716:11b41f651697 | 155 | * active with service-callbacks being issued back into the application for matching |
rgrover1 | 716:11b41f651697 | 156 | * services. isServiceDiscoveryActive() can be used to |
vcoubard | 1048:efb29faf12fc | 157 | * determine status, and a termination callback (if set up) will be invoked |
vcoubard | 1048:efb29faf12fc | 158 | * at the end. Service discovery can be terminated prematurely, if needed, |
rgrover1 | 716:11b41f651697 | 159 | * using terminateServiceDiscovery(). |
rgrover1 | 716:11b41f651697 | 160 | * |
rgrover1 | 716:11b41f651697 | 161 | * @param connectionHandle |
rgrover1 | 716:11b41f651697 | 162 | * Handle for the connection with the peer. |
rgrover1 | 716:11b41f651697 | 163 | * @param sc |
vcoubard | 1048:efb29faf12fc | 164 | * This is the application callback for a matching service. Note: service discovery may still be active |
rgrover1 | 716:11b41f651697 | 165 | * when this callback is issued; calling asynchronous BLE-stack |
rgrover1 | 716:11b41f651697 | 166 | * APIs from within this application callback might cause the |
rgrover1 | 716:11b41f651697 | 167 | * stack to abort service discovery. If this becomes an issue, it |
vcoubard | 1048:efb29faf12fc | 168 | * may be better to make a local copy of the discoveredService and |
rgrover1 | 716:11b41f651697 | 169 | * wait for service discovery to terminate before operating on the |
rgrover1 | 716:11b41f651697 | 170 | * service. |
rgrover1 | 716:11b41f651697 | 171 | * @param startHandle, endHandle |
vcoubard | 1048:efb29faf12fc | 172 | * Handle range within which to limit the search. |
rgrover1 | 716:11b41f651697 | 173 | * |
rgrover1 | 716:11b41f651697 | 174 | * @return |
rgrover1 | 716:11b41f651697 | 175 | * BLE_ERROR_NONE if service discovery is launched successfully; else an appropriate error. |
rgrover1 | 716:11b41f651697 | 176 | */ |
rgrover1 | 716:11b41f651697 | 177 | virtual ble_error_t discoverServices(Gap::Handle_t connectionHandle, |
rgrover1 | 716:11b41f651697 | 178 | ServiceDiscovery::ServiceCallback_t callback, |
rgrover1 | 716:11b41f651697 | 179 | GattAttribute::Handle_t startHandle, |
rgrover1 | 716:11b41f651697 | 180 | GattAttribute::Handle_t endHandle) { |
vcoubard | 1048:efb29faf12fc | 181 | /* Avoid compiler warnings about unused variables. */ |
rgrover1 | 734:4872b70437ce | 182 | (void)connectionHandle; |
rgrover1 | 734:4872b70437ce | 183 | (void)callback; |
rgrover1 | 734:4872b70437ce | 184 | (void)startHandle; |
rgrover1 | 734:4872b70437ce | 185 | (void)endHandle; |
rgrover1 | 734:4872b70437ce | 186 | |
vcoubard | 1048:efb29faf12fc | 187 | return BLE_ERROR_NOT_IMPLEMENTED; /* Requesting action from porters: override this API if this capability is supported. */ |
rgrover1 | 716:11b41f651697 | 188 | } |
rgrover1 | 716:11b41f651697 | 189 | |
rgrover1 | 716:11b41f651697 | 190 | /** |
rgrover1 | 716:11b41f651697 | 191 | * Is service-discovery currently active? |
rgrover1 | 716:11b41f651697 | 192 | */ |
rgrover1 | 716:11b41f651697 | 193 | virtual bool isServiceDiscoveryActive(void) const { |
vcoubard | 1048:efb29faf12fc | 194 | return false; /* Requesting action from porters: override this API if this capability is supported. */ |
rgrover1 | 716:11b41f651697 | 195 | } |
rgrover1 | 716:11b41f651697 | 196 | |
rgrover1 | 716:11b41f651697 | 197 | /** |
vcoubard | 1048:efb29faf12fc | 198 | * Terminate an ongoing service discovery. This should result in an |
vcoubard | 1048:efb29faf12fc | 199 | * invocation of TerminationCallback if service-discovery is active. |
rgrover1 | 716:11b41f651697 | 200 | */ |
rgrover1 | 716:11b41f651697 | 201 | virtual void terminateServiceDiscovery(void) { |
vcoubard | 1048:efb29faf12fc | 202 | /* Requesting action from porters: override this API if this capability is supported. */ |
rgrover1 | 716:11b41f651697 | 203 | } |
rgrover1 | 716:11b41f651697 | 204 | |
vcoubard | 1048:efb29faf12fc | 205 | /* Initiate a GATT Client read procedure by attribute-handle. */ |
rgrover1 | 716:11b41f651697 | 206 | virtual ble_error_t read(Gap::Handle_t connHandle, GattAttribute::Handle_t attributeHandle, uint16_t offset) const { |
vcoubard | 1048:efb29faf12fc | 207 | /* Avoid compiler warnings about unused variables. */ |
rgrover1 | 734:4872b70437ce | 208 | (void)connHandle; |
rgrover1 | 734:4872b70437ce | 209 | (void)attributeHandle; |
rgrover1 | 734:4872b70437ce | 210 | (void)offset; |
rgrover1 | 734:4872b70437ce | 211 | |
vcoubard | 1048:efb29faf12fc | 212 | return BLE_ERROR_NOT_IMPLEMENTED; /* Requesting action from porters: override this API if this capability is supported. */ |
rgrover1 | 716:11b41f651697 | 213 | } |
rgrover1 | 716:11b41f651697 | 214 | |
rgrover1 | 716:11b41f651697 | 215 | /** |
rgrover1 | 716:11b41f651697 | 216 | * Initiate a GATT Client write procedure. |
rgrover1 | 716:11b41f651697 | 217 | * |
rgrover1 | 716:11b41f651697 | 218 | * @param[in] cmd |
vcoubard | 1048:efb29faf12fc | 219 | * Command can be either a write-request (which generates a |
vcoubard | 1048:efb29faf12fc | 220 | * matching response from the peripheral), or a write-command |
vcoubard | 1048:efb29faf12fc | 221 | * (which doesn't require the connected peer to respond). |
rgrover1 | 716:11b41f651697 | 222 | * @param[in] connHandle |
rgrover1 | 716:11b41f651697 | 223 | * Connection handle. |
rgrover1 | 716:11b41f651697 | 224 | * @param[in] attributeHandle |
vcoubard | 1048:efb29faf12fc | 225 | * Handle for the target attribtue on the remote GATT server. |
rgrover1 | 716:11b41f651697 | 226 | * @param[in] length |
vcoubard | 1048:efb29faf12fc | 227 | * Length of the new value. |
rgrover1 | 716:11b41f651697 | 228 | * @param[in] value |
vcoubard | 1048:efb29faf12fc | 229 | * New value being written. |
rgrover1 | 716:11b41f651697 | 230 | */ |
rgrover1 | 716:11b41f651697 | 231 | virtual ble_error_t write(GattClient::WriteOp_t cmd, |
rgrover1 | 716:11b41f651697 | 232 | Gap::Handle_t connHandle, |
rgrover1 | 716:11b41f651697 | 233 | GattAttribute::Handle_t attributeHandle, |
rgrover1 | 716:11b41f651697 | 234 | size_t length, |
rgrover1 | 716:11b41f651697 | 235 | const uint8_t *value) const { |
vcoubard | 1048:efb29faf12fc | 236 | /* Avoid compiler warnings about unused variables. */ |
rgrover1 | 734:4872b70437ce | 237 | (void)cmd; |
rgrover1 | 734:4872b70437ce | 238 | (void)connHandle; |
rgrover1 | 734:4872b70437ce | 239 | (void)attributeHandle; |
rgrover1 | 734:4872b70437ce | 240 | (void)length; |
rgrover1 | 734:4872b70437ce | 241 | (void)value; |
rgrover1 | 734:4872b70437ce | 242 | |
vcoubard | 1048:efb29faf12fc | 243 | return BLE_ERROR_NOT_IMPLEMENTED; /* Requesting action from porters: override this API if this capability is supported. */ |
rgrover1 | 728:997ba5e7b3b6 | 244 | } |
rgrover1 | 728:997ba5e7b3b6 | 245 | |
rgrover1 | 728:997ba5e7b3b6 | 246 | /* Event callback handlers. */ |
rgrover1 | 728:997ba5e7b3b6 | 247 | public: |
rgrover1 | 728:997ba5e7b3b6 | 248 | /** |
vcoubard | 1052:b55e1ad3e1b3 | 249 | * Set up a callback for read response events. |
vcoubard | 1052:b55e1ad3e1b3 | 250 | * It is possible to remove registered callbacks using |
vcoubard | 1052:b55e1ad3e1b3 | 251 | * onDataRead().detach(callbackToRemove) |
rgrover1 | 728:997ba5e7b3b6 | 252 | */ |
rgrover1 | 728:997ba5e7b3b6 | 253 | void onDataRead(ReadCallback_t callback) { |
vcoubard | 1052:b55e1ad3e1b3 | 254 | onDataReadCallbackChain.add(callback); |
vcoubard | 1052:b55e1ad3e1b3 | 255 | } |
vcoubard | 1052:b55e1ad3e1b3 | 256 | |
vcoubard | 1052:b55e1ad3e1b3 | 257 | /** |
vcoubard | 1052:b55e1ad3e1b3 | 258 | * @brief provide access to the callchain of read callbacks |
vcoubard | 1052:b55e1ad3e1b3 | 259 | * It is possible to register callbacks using onDataRead().add(callback); |
vcoubard | 1052:b55e1ad3e1b3 | 260 | * It is possible to unregister callbacks using onDataRead().detach(callback) |
vcoubard | 1052:b55e1ad3e1b3 | 261 | * @return The read callbacks chain |
vcoubard | 1052:b55e1ad3e1b3 | 262 | */ |
vcoubard | 1052:b55e1ad3e1b3 | 263 | ReadCallbackChain_t& onDataRead() { |
vcoubard | 1052:b55e1ad3e1b3 | 264 | return onDataReadCallbackChain; |
rgrover1 | 728:997ba5e7b3b6 | 265 | } |
rgrover1 | 728:997ba5e7b3b6 | 266 | |
rgrover1 | 728:997ba5e7b3b6 | 267 | /** |
vcoubard | 1048:efb29faf12fc | 268 | * Set up a callback for write response events. |
vcoubard | 1052:b55e1ad3e1b3 | 269 | * It is possible to remove registered callbacks using |
vcoubard | 1052:b55e1ad3e1b3 | 270 | * onDataWritten().detach(callbackToRemove). |
vcoubard | 1048:efb29faf12fc | 271 | * @Note: Write commands (issued using writeWoResponse) don't generate a response. |
rgrover1 | 728:997ba5e7b3b6 | 272 | */ |
rgrover1 | 768:8914bea92690 | 273 | void onDataWritten(WriteCallback_t callback) { |
vcoubard | 1052:b55e1ad3e1b3 | 274 | onDataWriteCallbackChain.add(callback); |
vcoubard | 1052:b55e1ad3e1b3 | 275 | } |
vcoubard | 1052:b55e1ad3e1b3 | 276 | |
vcoubard | 1052:b55e1ad3e1b3 | 277 | /** |
vcoubard | 1052:b55e1ad3e1b3 | 278 | * @brief provide access to the callchain of data written callbacks |
vcoubard | 1052:b55e1ad3e1b3 | 279 | * It is possible to register callbacks using onDataWritten().add(callback); |
vcoubard | 1052:b55e1ad3e1b3 | 280 | * It is possible to unregister callbacks using onDataWritten().detach(callback) |
vcoubard | 1052:b55e1ad3e1b3 | 281 | * @return The data written callbacks chain |
vcoubard | 1052:b55e1ad3e1b3 | 282 | */ |
vcoubard | 1052:b55e1ad3e1b3 | 283 | WriteCallbackChain_t& onDataWritten() { |
vcoubard | 1052:b55e1ad3e1b3 | 284 | return onDataWriteCallbackChain; |
rgrover1 | 990:53ac0ac3aa39 | 285 | } |
rgrover1 | 990:53ac0ac3aa39 | 286 | |
rgrover1 | 990:53ac0ac3aa39 | 287 | /** |
vcoubard | 1048:efb29faf12fc | 288 | * Set up a callback for write response events. |
vcoubard | 1048:efb29faf12fc | 289 | * @Note: Write commands (issued using writeWoResponse) don't generate a response. |
rgrover1 | 768:8914bea92690 | 290 | * |
rgrover1 | 768:8914bea92690 | 291 | * @note: This API is now *deprecated* and will be dropped in the future. |
rgrover1 | 768:8914bea92690 | 292 | * Please use onDataWritten() instead. |
rgrover1 | 768:8914bea92690 | 293 | */ |
rgrover1 | 728:997ba5e7b3b6 | 294 | void onDataWrite(WriteCallback_t callback) { |
rgrover1 | 768:8914bea92690 | 295 | onDataWritten(callback); |
rgrover1 | 720:ce8a760a4504 | 296 | } |
rgrover1 | 720:ce8a760a4504 | 297 | |
rgrover1 | 716:11b41f651697 | 298 | /** |
vcoubard | 1048:efb29faf12fc | 299 | * Set up a callback for when serviceDiscovery terminates. |
rgrover1 | 716:11b41f651697 | 300 | */ |
rgrover1 | 716:11b41f651697 | 301 | virtual void onServiceDiscoveryTermination(ServiceDiscovery::TerminationCallback_t callback) { |
vcoubard | 1048:efb29faf12fc | 302 | (void)callback; /* Avoid compiler warnings about ununsed variables. */ |
rgrover1 | 734:4872b70437ce | 303 | |
vcoubard | 1048:efb29faf12fc | 304 | /* Requesting action from porters: override this API if this capability is supported. */ |
rgrover1 | 716:11b41f651697 | 305 | } |
rgrover1 | 716:11b41f651697 | 306 | |
rgrover1 | 737:79d95f9b93be | 307 | /** |
vcoubard | 1048:efb29faf12fc | 308 | * Set up a callback for when the GATT client receives an update event |
vcoubard | 1048:efb29faf12fc | 309 | * corresponding to a change in the value of a characteristic on the remote |
vcoubard | 1048:efb29faf12fc | 310 | * GATT server. |
vcoubard | 1052:b55e1ad3e1b3 | 311 | * It is possible to remove registered callbacks using onHVX().detach(callbackToRemove). |
rgrover1 | 737:79d95f9b93be | 312 | */ |
rgrover1 | 737:79d95f9b93be | 313 | void onHVX(HVXCallback_t callback) { |
vcoubard | 1052:b55e1ad3e1b3 | 314 | onHVXCallbackChain.add(callback); |
vcoubard | 1052:b55e1ad3e1b3 | 315 | } |
vcoubard | 1052:b55e1ad3e1b3 | 316 | |
vcoubard | 1052:b55e1ad3e1b3 | 317 | |
vcoubard | 1052:b55e1ad3e1b3 | 318 | /** |
vcoubard | 1052:b55e1ad3e1b3 | 319 | * @brief provide access to the callchain of HVX callbacks |
vcoubard | 1052:b55e1ad3e1b3 | 320 | * It is possible to register callbacks using onHVX().add(callback); |
vcoubard | 1052:b55e1ad3e1b3 | 321 | * It is possible to unregister callbacks using onHVX().detach(callback) |
vcoubard | 1052:b55e1ad3e1b3 | 322 | * @return The HVX callbacks chain |
vcoubard | 1052:b55e1ad3e1b3 | 323 | */ |
vcoubard | 1052:b55e1ad3e1b3 | 324 | HVXCallbackChain_t& onHVX() { |
vcoubard | 1052:b55e1ad3e1b3 | 325 | return onHVXCallbackChain; |
rgrover1 | 737:79d95f9b93be | 326 | } |
rgrover1 | 737:79d95f9b93be | 327 | |
rgrover1 | 716:11b41f651697 | 328 | protected: |
vcoubard | 1062:a3fd424b73ca | 329 | /** |
vcoubard | 1062:a3fd424b73ca | 330 | * Clear all GattClient state of the associated object. |
vcoubard | 1062:a3fd424b73ca | 331 | * |
vcoubard | 1062:a3fd424b73ca | 332 | * This function is meant to be overridden in the platform-specific |
vcoubard | 1062:a3fd424b73ca | 333 | * sub-class. Nevertheless, the sub-class is only expected to clean up its |
vcoubard | 1062:a3fd424b73ca | 334 | * state and not the data held in GattClient members. This shall be achieved |
vcoubard | 1062:a3fd424b73ca | 335 | * by a call to GattClient::cleanup() from the sub-class' cleanup() |
vcoubard | 1062:a3fd424b73ca | 336 | * implementation. |
vcoubard | 1062:a3fd424b73ca | 337 | * |
vcoubard | 1062:a3fd424b73ca | 338 | * @return BLE_ERROR_NONE on success. |
vcoubard | 1062:a3fd424b73ca | 339 | */ |
vcoubard | 1062:a3fd424b73ca | 340 | virtual ble_error_t cleanup(void) { |
vcoubard | 1062:a3fd424b73ca | 341 | onDataReadCallbackChain.clear(); |
vcoubard | 1062:a3fd424b73ca | 342 | onDataWriteCallbackChain.clear(); |
vcoubard | 1062:a3fd424b73ca | 343 | onHVXCallbackChain.clear(); |
vcoubard | 1062:a3fd424b73ca | 344 | |
vcoubard | 1062:a3fd424b73ca | 345 | return BLE_ERROR_NONE; |
vcoubard | 1062:a3fd424b73ca | 346 | } |
vcoubard | 1062:a3fd424b73ca | 347 | |
vcoubard | 1062:a3fd424b73ca | 348 | public: |
vcoubard | 1062:a3fd424b73ca | 349 | /** |
vcoubard | 1062:a3fd424b73ca | 350 | * Clear all GattClient state of the object pointed to by |
vcoubard | 1062:a3fd424b73ca | 351 | * gattClientInstance. |
vcoubard | 1062:a3fd424b73ca | 352 | * |
vcoubard | 1062:a3fd424b73ca | 353 | * This function is meant to be called by the overridden BLE::shutdown() |
vcoubard | 1062:a3fd424b73ca | 354 | * in the platform-specific sub-class. |
vcoubard | 1062:a3fd424b73ca | 355 | * |
vcoubard | 1062:a3fd424b73ca | 356 | * @return BLE_ERROR_NONE on success. |
vcoubard | 1062:a3fd424b73ca | 357 | * |
vcoubard | 1062:a3fd424b73ca | 358 | * @note: If gattClientInstance is NULL then it is assumed that Gap has not |
vcoubard | 1062:a3fd424b73ca | 359 | * been instantiated and a call to GattClient::shutdown() will succeed. |
vcoubard | 1062:a3fd424b73ca | 360 | */ |
vcoubard | 1062:a3fd424b73ca | 361 | static ble_error_t shutdown(void) { |
vcoubard | 1062:a3fd424b73ca | 362 | if (gattClientInstance) { |
vcoubard | 1062:a3fd424b73ca | 363 | return gattClientInstance->cleanup(); |
vcoubard | 1062:a3fd424b73ca | 364 | } |
vcoubard | 1062:a3fd424b73ca | 365 | return BLE_ERROR_NONE; |
vcoubard | 1062:a3fd424b73ca | 366 | } |
vcoubard | 1062:a3fd424b73ca | 367 | |
vcoubard | 1062:a3fd424b73ca | 368 | protected: |
rgrover1 | 716:11b41f651697 | 369 | GattClient() { |
vcoubard | 1048:efb29faf12fc | 370 | /* Empty */ |
rgrover1 | 716:11b41f651697 | 371 | } |
rgrover1 | 716:11b41f651697 | 372 | |
rgrover1 | 728:997ba5e7b3b6 | 373 | /* Entry points for the underlying stack to report events back to the user. */ |
rgrover1 | 728:997ba5e7b3b6 | 374 | public: |
rgrover1 | 728:997ba5e7b3b6 | 375 | void processReadResponse(const GattReadCallbackParams *params) { |
vcoubard | 1052:b55e1ad3e1b3 | 376 | onDataReadCallbackChain(params); |
rgrover1 | 728:997ba5e7b3b6 | 377 | } |
rgrover1 | 728:997ba5e7b3b6 | 378 | |
rgrover1 | 728:997ba5e7b3b6 | 379 | void processWriteResponse(const GattWriteCallbackParams *params) { |
vcoubard | 1052:b55e1ad3e1b3 | 380 | onDataWriteCallbackChain(params); |
rgrover1 | 728:997ba5e7b3b6 | 381 | } |
rgrover1 | 728:997ba5e7b3b6 | 382 | |
rgrover1 | 737:79d95f9b93be | 383 | void processHVXEvent(const GattHVXCallbackParams *params) { |
vcoubard | 1052:b55e1ad3e1b3 | 384 | if (onHVXCallbackChain) { |
vcoubard | 1052:b55e1ad3e1b3 | 385 | onHVXCallbackChain(params); |
rgrover1 | 737:79d95f9b93be | 386 | } |
rgrover1 | 737:79d95f9b93be | 387 | } |
rgrover1 | 737:79d95f9b93be | 388 | |
rgrover1 | 728:997ba5e7b3b6 | 389 | protected: |
vcoubard | 1052:b55e1ad3e1b3 | 390 | ReadCallbackChain_t onDataReadCallbackChain; |
vcoubard | 1052:b55e1ad3e1b3 | 391 | WriteCallbackChain_t onDataWriteCallbackChain; |
vcoubard | 1052:b55e1ad3e1b3 | 392 | HVXCallbackChain_t onHVXCallbackChain; |
rgrover1 | 728:997ba5e7b3b6 | 393 | |
vcoubard | 1062:a3fd424b73ca | 394 | protected: |
vcoubard | 1062:a3fd424b73ca | 395 | static GattClient *gattClientInstance; /**< Pointer to the GattClient object instance. |
vcoubard | 1062:a3fd424b73ca | 396 | * If NULL, then GattClient has not been initialized. */ |
vcoubard | 1062:a3fd424b73ca | 397 | |
rgrover1 | 716:11b41f651697 | 398 | private: |
vcoubard | 1048:efb29faf12fc | 399 | /* Disallow copy and assignment. */ |
rgrover1 | 716:11b41f651697 | 400 | GattClient(const GattClient &); |
rgrover1 | 716:11b41f651697 | 401 | GattClient& operator=(const GattClient &); |
rgrover1 | 716:11b41f651697 | 402 | }; |
rgrover1 | 716:11b41f651697 | 403 | |
rgrover1 | 716:11b41f651697 | 404 | #endif // ifndef __GATT_CLIENT_H__ |