Alex Cordonnier / BLE_API

High level Bluetooth Low Energy API and radio abstraction layer

Fork of BLE_API by Bluetooth Low Energy

ble/GattClient.h@727:1a1f5c5aedfe, 2015-07-06 (annotated)

Committer:
rgrover1
Date:
Mon Jul 06 10:10:34 2015 +0100
Revision:
727:1a1f5c5aedfe
Parent:
725:f4a355b35cf8
Child:
728:997ba5e7b3b6
Synchronized with git rev 854fd111

Author: James Crosby

use mbed-classic to build (this will probably be a target-dependendency in the future)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rgrover1 716:11b41f651697 1 /* mbed Microcontroller Library
rgrover1 716:11b41f651697 2 * Copyright (c) 2006-2013 ARM Limited
rgrover1 716:11b41f651697 3 *
rgrover1 716:11b41f651697 4 * Licensed under the Apache License, Version 2.0 (the "License");
rgrover1 716:11b41f651697 5 * you may not use this file except in compliance with the License.
rgrover1 716:11b41f651697 6 * You may obtain a copy of the License at
rgrover1 716:11b41f651697 7 *
rgrover1 716:11b41f651697 8 * http://www.apache.org/licenses/LICENSE-2.0
rgrover1 716:11b41f651697 9 *
rgrover1 716:11b41f651697 10 * Unless required by applicable law or agreed to in writing, software
rgrover1 716:11b41f651697 11 * distributed under the License is distributed on an "AS IS" BASIS,
rgrover1 716:11b41f651697 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
rgrover1 716:11b41f651697 13 * See the License for the specific language governing permissions and
rgrover1 716:11b41f651697 14 * limitations under the License.
rgrover1 716:11b41f651697 15 */
rgrover1 716:11b41f651697 16
rgrover1 716:11b41f651697 17 #ifndef __GATT_CLIENT_H__
rgrover1 716:11b41f651697 18 #define __GATT_CLIENT_H__
rgrover1 716:11b41f651697 19
rgrover1 716:11b41f651697 20 #include "Gap.h"
rgrover1 716:11b41f651697 21 #include "GattAttribute.h"
rgrover1 716:11b41f651697 22 #include "ServiceDiscovery.h"
rgrover1 716:11b41f651697 23
rgrover1 716:11b41f651697 24 #include "GattCallbackParamTypes.h"
rgrover1 716:11b41f651697 25
rgrover1 716:11b41f651697 26 class GattClient {
rgrover1 716:11b41f651697 27 public:
rgrover1 716:11b41f651697 28 typedef void (*ReadCallback_t)(const GattReadCallbackParams *params);
rgrover1 716:11b41f651697 29
rgrover1 716:11b41f651697 30 enum WriteOp_t {
rgrover1 727:1a1f5c5aedfe 31 GATT_OP_WRITE_REQ = 0x01, /**< Write Request. */
rgrover1 727:1a1f5c5aedfe 32 GATT_OP_WRITE_CMD = 0x02, /**< Write Command. */
rgrover1 716:11b41f651697 33 };
rgrover1 716:11b41f651697 34
rgrover1 716:11b41f651697 35 typedef void (*WriteCallback_t)(const GattWriteCallbackParams *params);
rgrover1 716:11b41f651697 36
rgrover1 716:11b41f651697 37 /*
rgrover1 716:11b41f651697 38 * The following functions are meant to be overridden in the platform-specific sub-class.
rgrover1 716:11b41f651697 39 */
rgrover1 716:11b41f651697 40 public:
rgrover1 716:11b41f651697 41 /**
rgrover1 727:1a1f5c5aedfe 42 * Launch service discovery. Once launched, service discovery will remain
rgrover1 727:1a1f5c5aedfe 43 * active with callbacks being issued back into the application for matching
rgrover1 727:1a1f5c5aedfe 44 * services/characteristics. isServiceDiscoveryActive() can be used to
rgrover1 727:1a1f5c5aedfe 45 * determine status; and a termination callback (if setup) will be invoked
rgrover1 727:1a1f5c5aedfe 46 * at the end. Service discovery can be terminated prematurely if needed
rgrover1 727:1a1f5c5aedfe 47 * using terminateServiceDiscovery().
rgrover1 716:11b41f651697 48 *
rgrover1 716:11b41f651697 49 * @param connectionHandle
rgrover1 716:11b41f651697 50 * Handle for the connection with the peer.
rgrover1 716:11b41f651697 51 * @param sc
rgrover1 716:11b41f651697 52 * This is the application callback for matching service. Taken as
rgrover1 716:11b41f651697 53 * NULL by default. Note: service discovery may still be active
rgrover1 716:11b41f651697 54 * when this callback is issued; calling asynchronous BLE-stack
rgrover1 716:11b41f651697 55 * APIs from within this application callback might cause the
rgrover1 716:11b41f651697 56 * stack to abort service discovery. If this becomes an issue, it
rgrover1 716:11b41f651697 57 * may be better to make local copy of the discoveredService and
rgrover1 716:11b41f651697 58 * wait for service discovery to terminate before operating on the
rgrover1 716:11b41f651697 59 * service.
rgrover1 716:11b41f651697 60 * @param cc
rgrover1 716:11b41f651697 61 * This is the application callback for matching characteristic.
rgrover1 716:11b41f651697 62 * Taken as NULL by default. Note: service discovery may still be
rgrover1 716:11b41f651697 63 * active when this callback is issued; calling asynchronous
rgrover1 716:11b41f651697 64 * BLE-stack APIs from within this application callback might cause
rgrover1 716:11b41f651697 65 * the stack to abort service discovery. If this becomes an issue,
rgrover1 716:11b41f651697 66 * it may be better to make local copy of the discoveredCharacteristic
rgrover1 716:11b41f651697 67 * and wait for service discovery to terminate before operating on the
rgrover1 716:11b41f651697 68 * characteristic.
rgrover1 716:11b41f651697 69 * @param matchingServiceUUID
rgrover1 716:11b41f651697 70 * UUID based filter for specifying a service in which the application is
rgrover1 716:11b41f651697 71 * interested. By default it is set as the wildcard UUID_UNKNOWN,
rgrover1 716:11b41f651697 72 * in which case it matches all services. If characteristic-UUID
rgrover1 716:11b41f651697 73 * filter (below) is set to the wildcard value, then a service
rgrover1 716:11b41f651697 74 * callback will be invoked for the matching service (or for every
rgrover1 716:11b41f651697 75 * service if the service filter is a wildcard).
rgrover1 716:11b41f651697 76 * @param matchingCharacteristicUUIDIn
rgrover1 716:11b41f651697 77 * UUID based filter for specifying characteristic in which the application
rgrover1 716:11b41f651697 78 * is interested. By default it is set as the wildcard UUID_UKNOWN
rgrover1 716:11b41f651697 79 * to match against any characteristic. If both service-UUID
rgrover1 716:11b41f651697 80 * filter and characteristic-UUID filter are used with non- wildcard
rgrover1 716:11b41f651697 81 * values, then only a single characteristic callback is
rgrover1 716:11b41f651697 82 * invoked for the matching characteristic.
rgrover1 716:11b41f651697 83 *
rgrover1 716:11b41f651697 84 * @note Using wildcard values for both service-UUID and characteristic-
rgrover1 716:11b41f651697 85 * UUID will result in complete service discovery--callbacks being
rgrover1 716:11b41f651697 86 * called for every service and characteristic.
rgrover1 716:11b41f651697 87 *
rgrover1 716:11b41f651697 88 * @note Providing NULL for the characteristic callback will result in
rgrover1 716:11b41f651697 89 * characteristic discovery being skipped for each matching
rgrover1 716:11b41f651697 90 * service. This allows for an inexpensive method to discover only
rgrover1 716:11b41f651697 91 * services.
rgrover1 716:11b41f651697 92 *
rgrover1 716:11b41f651697 93 * @return
rgrover1 716:11b41f651697 94 * BLE_ERROR_NONE if service discovery is launched successfully; else an appropriate error.
rgrover1 716:11b41f651697 95 */
rgrover1 716:11b41f651697 96 virtual ble_error_t launchServiceDiscovery(Gap::Handle_t connectionHandle,
rgrover1 716:11b41f651697 97 ServiceDiscovery::ServiceCallback_t sc = NULL,
rgrover1 716:11b41f651697 98 ServiceDiscovery::CharacteristicCallback_t cc = NULL,
rgrover1 716:11b41f651697 99 const UUID &matchingServiceUUID = UUID::ShortUUIDBytes_t(BLE_UUID_UNKNOWN),
rgrover1 716:11b41f651697 100 const UUID &matchingCharacteristicUUIDIn = UUID::ShortUUIDBytes_t(BLE_UUID_UNKNOWN)) {
rgrover1 727:1a1f5c5aedfe 101 return BLE_ERROR_NOT_IMPLEMENTED; /* default implementation; override this API if this capability is supported. */
rgrover1 716:11b41f651697 102 }
rgrover1 716:11b41f651697 103
rgrover1 716:11b41f651697 104 /**
rgrover1 716:11b41f651697 105 * Launch service discovery for services. Once launched, service discovery will remain
rgrover1 716:11b41f651697 106 * active with service-callbacks being issued back into the application for matching
rgrover1 716:11b41f651697 107 * services. isServiceDiscoveryActive() can be used to
rgrover1 716:11b41f651697 108 * determine status; and a termination callback (if setup) will be invoked
rgrover1 716:11b41f651697 109 * at the end. Service discovery can be terminated prematurely if needed
rgrover1 716:11b41f651697 110 * using terminateServiceDiscovery().
rgrover1 716:11b41f651697 111 *
rgrover1 716:11b41f651697 112 * @param connectionHandle
rgrover1 716:11b41f651697 113 * Handle for the connection with the peer.
rgrover1 716:11b41f651697 114 * @param sc
rgrover1 716:11b41f651697 115 * This is the application callback for matching service. Note: service discovery may still be active
rgrover1 716:11b41f651697 116 * when this callback is issued; calling asynchronous BLE-stack
rgrover1 716:11b41f651697 117 * APIs from within this application callback might cause the
rgrover1 716:11b41f651697 118 * stack to abort service discovery. If this becomes an issue, it
rgrover1 716:11b41f651697 119 * may be better to make local copy of the discoveredService and
rgrover1 716:11b41f651697 120 * wait for service discovery to terminate before operating on the
rgrover1 716:11b41f651697 121 * service.
rgrover1 716:11b41f651697 122 * @param matchingServiceUUID
rgrover1 716:11b41f651697 123 * UUID based filter for specifying a service in which the application is
rgrover1 716:11b41f651697 124 * interested. By default it is set as the wildcard UUID_UNKNOWN,
rgrover1 716:11b41f651697 125 * in which case it matches all services.
rgrover1 716:11b41f651697 126 *
rgrover1 716:11b41f651697 127 * @return
rgrover1 716:11b41f651697 128 * BLE_ERROR_NONE if service discovery is launched successfully; else an appropriate error.
rgrover1 716:11b41f651697 129 */
rgrover1 716:11b41f651697 130 virtual ble_error_t discoverServices(Gap::Handle_t connectionHandle,
rgrover1 716:11b41f651697 131 ServiceDiscovery::ServiceCallback_t callback,
rgrover1 716:11b41f651697 132 const UUID &matchingServiceUUID = UUID::ShortUUIDBytes_t(BLE_UUID_UNKNOWN)) {
rgrover1 727:1a1f5c5aedfe 133 return BLE_ERROR_NOT_IMPLEMENTED; /* default implementation; override this API if this capability is supported. */
rgrover1 716:11b41f651697 134 }
rgrover1 716:11b41f651697 135
rgrover1 716:11b41f651697 136 /**
rgrover1 716:11b41f651697 137 * Launch service discovery for services. Once launched, service discovery will remain
rgrover1 716:11b41f651697 138 * active with service-callbacks being issued back into the application for matching
rgrover1 716:11b41f651697 139 * services. isServiceDiscoveryActive() can be used to
rgrover1 716:11b41f651697 140 * determine status; and a termination callback (if setup) will be invoked
rgrover1 716:11b41f651697 141 * at the end. Service discovery can be terminated prematurely if needed
rgrover1 716:11b41f651697 142 * using terminateServiceDiscovery().
rgrover1 716:11b41f651697 143 *
rgrover1 716:11b41f651697 144 * @param connectionHandle
rgrover1 716:11b41f651697 145 * Handle for the connection with the peer.
rgrover1 716:11b41f651697 146 * @param sc
rgrover1 716:11b41f651697 147 * This is the application callback for matching service. Note: service discovery may still be active
rgrover1 716:11b41f651697 148 * when this callback is issued; calling asynchronous BLE-stack
rgrover1 716:11b41f651697 149 * APIs from within this application callback might cause the
rgrover1 716:11b41f651697 150 * stack to abort service discovery. If this becomes an issue, it
rgrover1 716:11b41f651697 151 * may be better to make local copy of the discoveredService and
rgrover1 716:11b41f651697 152 * wait for service discovery to terminate before operating on the
rgrover1 716:11b41f651697 153 * service.
rgrover1 716:11b41f651697 154 * @param startHandle, endHandle
rgrover1 716:11b41f651697 155 * Handle range within which to limit the search
rgrover1 716:11b41f651697 156 *
rgrover1 716:11b41f651697 157 * @return
rgrover1 716:11b41f651697 158 * BLE_ERROR_NONE if service discovery is launched successfully; else an appropriate error.
rgrover1 716:11b41f651697 159 */
rgrover1 716:11b41f651697 160 virtual ble_error_t discoverServices(Gap::Handle_t connectionHandle,
rgrover1 716:11b41f651697 161 ServiceDiscovery::ServiceCallback_t callback,
rgrover1 716:11b41f651697 162 GattAttribute::Handle_t startHandle,
rgrover1 716:11b41f651697 163 GattAttribute::Handle_t endHandle) {
rgrover1 727:1a1f5c5aedfe 164 return BLE_ERROR_NOT_IMPLEMENTED; /* default implementation; override this API if this capability is supported. */
rgrover1 716:11b41f651697 165 }
rgrover1 716:11b41f651697 166
rgrover1 716:11b41f651697 167 /**
rgrover1 716:11b41f651697 168 * Is service-discovery currently active?
rgrover1 716:11b41f651697 169 */
rgrover1 716:11b41f651697 170 virtual bool isServiceDiscoveryActive(void) const {
rgrover1 716:11b41f651697 171 return false; /* default implementation; override this API if this capability is supported. */
rgrover1 716:11b41f651697 172 }
rgrover1 716:11b41f651697 173
rgrover1 716:11b41f651697 174 /**
rgrover1 716:11b41f651697 175 * Terminate an ongoing service-discovery. This should result in an
rgrover1 716:11b41f651697 176 * invocation of the TerminationCallback if service-discovery is active.
rgrover1 716:11b41f651697 177 */
rgrover1 716:11b41f651697 178 virtual void terminateServiceDiscovery(void) {
rgrover1 716:11b41f651697 179 /* default implementation; override this API if this capability is supported. */
rgrover1 716:11b41f651697 180 }
rgrover1 716:11b41f651697 181
rgrover1 716:11b41f651697 182 /* Initiate a Gatt Client read procedure by attribute-handle. */
rgrover1 716:11b41f651697 183 virtual ble_error_t read(Gap::Handle_t connHandle, GattAttribute::Handle_t attributeHandle, uint16_t offset) const {
rgrover1 727:1a1f5c5aedfe 184 return BLE_ERROR_NOT_IMPLEMENTED; /* default implementation; override this API if this capability is supported. */
rgrover1 716:11b41f651697 185 }
rgrover1 716:11b41f651697 186
rgrover1 716:11b41f651697 187 /**
rgrover1 716:11b41f651697 188 * Initiate a GATT Client write procedure.
rgrover1 716:11b41f651697 189 *
rgrover1 716:11b41f651697 190 * @param[in] cmd
rgrover1 716:11b41f651697 191 * Command can be either a write-request (which generates a
rgrover1 716:11b41f651697 192 * matching response from the peripheral), or a write-command,
rgrover1 716:11b41f651697 193 * which doesn't require the connected peer to respond.
rgrover1 716:11b41f651697 194 * @param[in] connHandle
rgrover1 716:11b41f651697 195 * Connection handle.
rgrover1 716:11b41f651697 196 * @param[in] attributeHandle
rgrover1 716:11b41f651697 197 * handle for the target attribtue on the remote GATT server.
rgrover1 716:11b41f651697 198 * @param[in] length
rgrover1 716:11b41f651697 199 * length of the new value.
rgrover1 716:11b41f651697 200 * @param[in] value
rgrover1 716:11b41f651697 201 * new value being written.
rgrover1 716:11b41f651697 202 */
rgrover1 716:11b41f651697 203 virtual ble_error_t write(GattClient::WriteOp_t cmd,
rgrover1 716:11b41f651697 204 Gap::Handle_t connHandle,
rgrover1 716:11b41f651697 205 GattAttribute::Handle_t attributeHandle,
rgrover1 716:11b41f651697 206 size_t length,
rgrover1 716:11b41f651697 207 const uint8_t *value) const {
rgrover1 727:1a1f5c5aedfe 208 return BLE_ERROR_NOT_IMPLEMENTED; /* default implementation; override this API if this capability is supported. */
rgrover1 720:ce8a760a4504 209 }
rgrover1 720:ce8a760a4504 210
rgrover1 716:11b41f651697 211 /**
rgrover1 716:11b41f651697 212 * Setup callback for when serviceDiscovery terminates.
rgrover1 716:11b41f651697 213 */
rgrover1 716:11b41f651697 214 virtual void onServiceDiscoveryTermination(ServiceDiscovery::TerminationCallback_t callback) {
rgrover1 716:11b41f651697 215 /* default implementation; override this API if this capability is supported. */
rgrover1 716:11b41f651697 216 }
rgrover1 716:11b41f651697 217
rgrover1 716:11b41f651697 218 protected:
rgrover1 716:11b41f651697 219 GattClient() {
rgrover1 716:11b41f651697 220 /* empty */
rgrover1 716:11b41f651697 221 }
rgrover1 716:11b41f651697 222
rgrover1 716:11b41f651697 223 private:
rgrover1 716:11b41f651697 224 /* disallow copy and assignment */
rgrover1 716:11b41f651697 225 GattClient(const GattClient &);
rgrover1 716:11b41f651697 226 GattClient& operator=(const GattClient &);
rgrover1 716:11b41f651697 227 };
rgrover1 716:11b41f651697 228
rgrover1 716:11b41f651697 229 #endif // ifndef __GATT_CLIENT_H__