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public/GattClient.h@508:31e63ad6923f, 2015-06-19 (annotated)

Committer:
rgrover1
Date:
Fri Jun 19 15:52:04 2015 +0100
Revision:
508:31e63ad6923f
Parent:
504:817c6240e9d9
Child:
510:39612adfbf68
Synchronized with git rev 06deb965

Author: Rohit Grover

GattClient now reuses GattCharacteristicReadCBParams

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rgrover1 490:58a0313fffb5 1 /* mbed Microcontroller Library
rgrover1 490:58a0313fffb5 2 * Copyright (c) 2006-2013 ARM Limited
rgrover1 490:58a0313fffb5 3 *
rgrover1 490:58a0313fffb5 4 * Licensed under the Apache License, Version 2.0 (the "License");
rgrover1 490:58a0313fffb5 5 * you may not use this file except in compliance with the License.
rgrover1 490:58a0313fffb5 6 * You may obtain a copy of the License at
rgrover1 490:58a0313fffb5 7 *
rgrover1 490:58a0313fffb5 8 * http://www.apache.org/licenses/LICENSE-2.0
rgrover1 490:58a0313fffb5 9 *
rgrover1 490:58a0313fffb5 10 * Unless required by applicable law or agreed to in writing, software
rgrover1 490:58a0313fffb5 11 * distributed under the License is distributed on an "AS IS" BASIS,
rgrover1 490:58a0313fffb5 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
rgrover1 490:58a0313fffb5 13 * See the License for the specific language governing permissions and
rgrover1 490:58a0313fffb5 14 * limitations under the License.
rgrover1 490:58a0313fffb5 15 */
rgrover1 490:58a0313fffb5 16
rgrover1 490:58a0313fffb5 17 #ifndef __GATT_CLIENT_H__
rgrover1 490:58a0313fffb5 18 #define __GATT_CLIENT_H__
rgrover1 490:58a0313fffb5 19
rgrover1 495:b0d77b1db2df 20 #include "Gap.h"
rgrover1 495:b0d77b1db2df 21 #include "GattAttribute.h"
rgrover1 497:926d444599e8 22 #include "ServiceDiscovery.h"
rgrover1 495:b0d77b1db2df 23
rgrover1 508:31e63ad6923f 24 #include "GattCharacteristicCallbackParams.h"
rgrover1 508:31e63ad6923f 25
rgrover1 490:58a0313fffb5 26 class GattClient {
rgrover1 495:b0d77b1db2df 27 public:
rgrover1 508:31e63ad6923f 28 typedef void (*ReadCallback_t)(const GattCharacteristicReadCBParams *params);
rgrover1 501:ff6801633d2c 29
rgrover1 504:817c6240e9d9 30 enum WriteOp_t {
rgrover1 504:817c6240e9d9 31 GATT_OP_INVALID = 0x00, /**< Invalid Operation. */
rgrover1 504:817c6240e9d9 32 GATT_OP_WRITE_REQ = 0x01, /**< Write Request. */
rgrover1 504:817c6240e9d9 33 GATT_OP_WRITE_CMD = 0x02, /**< Write Command. */
rgrover1 504:817c6240e9d9 34 GATT_OP_SIGN_WRITE_CMD = 0x03, /**< Signed Write Command. */
rgrover1 504:817c6240e9d9 35 GATT_OP_PREP_WRITE_REQ = 0x04, /**< Prepare Write Request. */
rgrover1 504:817c6240e9d9 36 GATT_OP_EXEC_WRITE_REQ = 0x05, /**< Execute Write Request. */
rgrover1 504:817c6240e9d9 37 };
rgrover1 504:817c6240e9d9 38
rgrover1 508:31e63ad6923f 39 typedef void (*WriteCallback_t)(const GattCharacteristicWriteCBParams *params);
rgrover1 504:817c6240e9d9 40
rgrover1 497:926d444599e8 41 public:
rgrover1 497:926d444599e8 42 /**
rgrover1 497:926d444599e8 43 * Launch service discovery. Once launched, service discovery will remain
rgrover1 497:926d444599e8 44 * active with callbacks being issued back into the application for matching
rgrover1 497:926d444599e8 45 * services/characteristics. isActive() can be used to determine status; and
rgrover1 497:926d444599e8 46 * a termination callback (if setup) will be invoked at the end. Service
rgrover1 497:926d444599e8 47 * discovery can be terminated prematurely if needed using terminate().
rgrover1 497:926d444599e8 48 *
rgrover1 497:926d444599e8 49 * @param connectionHandle
rgrover1 497:926d444599e8 50 * Handle for the connection with the peer.
rgrover1 497:926d444599e8 51 * @param sc
rgrover1 497:926d444599e8 52 * This is the application callback for matching service.
rgrover1 497:926d444599e8 53 * @param cc
rgrover1 497:926d444599e8 54 * This is the application callback for matching characteristic.
rgrover1 497:926d444599e8 55 * @param matchingServiceUUID
rgrover1 497:926d444599e8 56 * UUID based filter for specifying a service in which the application is
rgrover1 497:926d444599e8 57 * interested.
rgrover1 497:926d444599e8 58 * @param matchingCharacteristicUUIDIn
rgrover1 497:926d444599e8 59 * UUID based filter for specifying characteristic in which the application
rgrover1 497:926d444599e8 60 * is interested.
rgrover1 497:926d444599e8 61 *
rgrover1 497:926d444599e8 62 * @Note Using wildcard values for both service-UUID and characteristic-
rgrover1 497:926d444599e8 63 * UUID will result in complete service discovery--callbacks being
rgrover1 497:926d444599e8 64 * called for every service and characteristic.
rgrover1 497:926d444599e8 65 *
rgrover1 497:926d444599e8 66 * @return
rgrover1 497:926d444599e8 67 * BLE_ERROR_NONE if service discovery is launched successfully; else an appropriate error.
rgrover1 497:926d444599e8 68 */
rgrover1 497:926d444599e8 69 virtual ble_error_t launchServiceDiscovery(Gap::Handle_t connectionHandle,
rgrover1 497:926d444599e8 70 ServiceDiscovery::ServiceCallback_t sc = NULL,
rgrover1 497:926d444599e8 71 ServiceDiscovery::CharacteristicCallback_t cc = NULL,
rgrover1 497:926d444599e8 72 const UUID &matchingServiceUUID = UUID::ShortUUIDBytes_t(BLE_UUID_UNKNOWN),
rgrover1 497:926d444599e8 73 const UUID &matchingCharacteristicUUIDIn = UUID::ShortUUIDBytes_t(BLE_UUID_UNKNOWN)) = 0;
rgrover1 497:926d444599e8 74
rgrover1 497:926d444599e8 75 virtual void onServiceDiscoveryTermination(ServiceDiscovery::TerminationCallback_t callback) = 0;
rgrover1 497:926d444599e8 76
rgrover1 497:926d444599e8 77 /**
rgrover1 497:926d444599e8 78 * Is service-discovery currently active?
rgrover1 497:926d444599e8 79 */
rgrover1 497:926d444599e8 80 virtual bool isServiceDiscoveryActive(void) const = 0;
rgrover1 497:926d444599e8 81
rgrover1 497:926d444599e8 82 /**
rgrover1 497:926d444599e8 83 * Terminate an ongoing service-discovery. This should result in an
rgrover1 497:926d444599e8 84 * invocation of the TerminationCallback if service-discovery is active.
rgrover1 497:926d444599e8 85 */
rgrover1 497:926d444599e8 86 virtual void terminateServiceDiscovery(void) = 0;
rgrover1 497:926d444599e8 87
rgrover1 495:b0d77b1db2df 88 /* Initiate a Gatt Client read procedure by attribute-handle.*/
rgrover1 495:b0d77b1db2df 89 virtual ble_error_t read(Gap::Handle_t connHandle, GattAttribute::Handle_t attributeHandle, uint16_t offset) const = 0;
rgrover1 495:b0d77b1db2df 90
rgrover1 504:817c6240e9d9 91 virtual ble_error_t write(GattClient::WriteOp_t cmd, Gap::Handle_t connHandle, size_t length, const uint8_t *value) const = 0;
rgrover1 497:926d444599e8 92
rgrover1 490:58a0313fffb5 93 #if 0
rgrover1 490:58a0313fffb5 94 public:
rgrover1 490:58a0313fffb5 95 /* Event callback handlers. */
rgrover1 490:58a0313fffb5 96 typedef void (*EventCallback_t)(GattAttribute::Handle_t attributeHandle);
rgrover1 490:58a0313fffb5 97 typedef void (*ServerEventCallback_t)(void); /**< independent of any particular attribute */
rgrover1 490:58a0313fffb5 98
rgrover1 490:58a0313fffb5 99 friend class BLEDevice;
rgrover1 490:58a0313fffb5 100 private:
rgrover1 490:58a0313fffb5 101 /* These functions must be defined in the sub-class */
rgrover1 490:58a0313fffb5 102 virtual ble_error_t addService(GattService &) = 0;
rgrover1 490:58a0313fffb5 103 virtual ble_error_t readValue(GattAttribute::Handle_t attributeHandle, uint8_t buffer[], uint16_t *lengthP) = 0;
rgrover1 490:58a0313fffb5 104 virtual ble_error_t readValue(Gap::Handle_t connectionHandle, GattAttribute::Handle_t attributeHandle, uint8_t buffer[], uint16_t *lengthP) = 0;
rgrover1 490:58a0313fffb5 105 virtual ble_error_t updateValue(GattAttribute::Handle_t, const uint8_t[], uint16_t, bool localOnly = false) = 0;
rgrover1 490:58a0313fffb5 106 virtual ble_error_t updateValue(Gap::Handle_t connectionHandle, GattAttribute::Handle_t, const uint8_t[], uint16_t, bool localOnly = false) = 0;
rgrover1 490:58a0313fffb5 107 virtual ble_error_t initializeGATTDatabase(void) = 0;
rgrover1 490:58a0313fffb5 108
rgrover1 490:58a0313fffb5 109 // ToDo: For updateValue, check the CCCD to see if the value we are
rgrover1 490:58a0313fffb5 110 // updating has the notify or indicate bits sent, and if BOTH are set
rgrover1 490:58a0313fffb5 111 // be sure to call sd_ble_gatts_hvx() twice with notify then indicate!
rgrover1 490:58a0313fffb5 112 // Strange use case, but valid and must be covered!
rgrover1 490:58a0313fffb5 113
rgrover1 490:58a0313fffb5 114 void setOnDataSent(void (*callback)(unsigned count)) {onDataSent.add(callback);}
rgrover1 490:58a0313fffb5 115 template <typename T>
rgrover1 490:58a0313fffb5 116 void setOnDataSent(T *objPtr, void (T::*memberPtr)(unsigned count)) {
rgrover1 490:58a0313fffb5 117 onDataSent.add(objPtr, memberPtr);
rgrover1 490:58a0313fffb5 118 }
rgrover1 490:58a0313fffb5 119 void setOnDataWritten(void (*callback)(const GattCharacteristicWriteCBParams *eventDataP)) {onDataWritten.add(callback);}
rgrover1 490:58a0313fffb5 120 template <typename T>
rgrover1 490:58a0313fffb5 121 void setOnDataWritten(T *objPtr, void (T::*memberPtr)(const GattCharacteristicWriteCBParams *context)) {
rgrover1 490:58a0313fffb5 122 onDataWritten.add(objPtr, memberPtr);
rgrover1 490:58a0313fffb5 123 }
rgrover1 490:58a0313fffb5 124
rgrover1 490:58a0313fffb5 125 /**
rgrover1 490:58a0313fffb5 126 * A virtual function to allow underlying stacks to indicate if they support
rgrover1 490:58a0313fffb5 127 * onDataRead(). It should be overridden to return true as applicable.
rgrover1 490:58a0313fffb5 128 */
rgrover1 490:58a0313fffb5 129 virtual bool isOnDataReadAvailable() const {
rgrover1 490:58a0313fffb5 130 return false;
rgrover1 490:58a0313fffb5 131 }
rgrover1 490:58a0313fffb5 132 ble_error_t setOnDataRead(void (*callback)(const GattCharacteristicReadCBParams *eventDataP)) {
rgrover1 490:58a0313fffb5 133 if (!isOnDataReadAvailable()) {
rgrover1 490:58a0313fffb5 134 return BLE_ERROR_NOT_IMPLEMENTED;
rgrover1 490:58a0313fffb5 135 }
rgrover1 490:58a0313fffb5 136
rgrover1 490:58a0313fffb5 137 onDataRead.add(callback);
rgrover1 490:58a0313fffb5 138 return BLE_ERROR_NONE;
rgrover1 490:58a0313fffb5 139 }
rgrover1 490:58a0313fffb5 140 template <typename T>
rgrover1 490:58a0313fffb5 141 ble_error_t setOnDataRead(T *objPtr, void (T::*memberPtr)(const GattCharacteristicReadCBParams *context)) {
rgrover1 490:58a0313fffb5 142 if (!isOnDataReadAvailable()) {
rgrover1 490:58a0313fffb5 143 return BLE_ERROR_NOT_IMPLEMENTED;
rgrover1 490:58a0313fffb5 144 }
rgrover1 490:58a0313fffb5 145
rgrover1 490:58a0313fffb5 146 onDataRead.add(objPtr, memberPtr);
rgrover1 490:58a0313fffb5 147 return BLE_ERROR_NONE;
rgrover1 490:58a0313fffb5 148 }
rgrover1 490:58a0313fffb5 149 void setOnUpdatesEnabled(EventCallback_t callback) {onUpdatesEnabled = callback;}
rgrover1 490:58a0313fffb5 150 void setOnUpdatesDisabled(EventCallback_t callback) {onUpdatesDisabled = callback;}
rgrover1 490:58a0313fffb5 151 void setOnConfirmationReceived(EventCallback_t callback) {onConfirmationReceived = callback;}
rgrover1 490:58a0313fffb5 152
rgrover1 490:58a0313fffb5 153 protected:
rgrover1 490:58a0313fffb5 154 void handleDataWrittenEvent(const GattCharacteristicWriteCBParams *params) {
rgrover1 490:58a0313fffb5 155 if (onDataWritten.hasCallbacksAttached()) {
rgrover1 490:58a0313fffb5 156 onDataWritten.call(params);
rgrover1 490:58a0313fffb5 157 }
rgrover1 490:58a0313fffb5 158 }
rgrover1 490:58a0313fffb5 159
rgrover1 490:58a0313fffb5 160 void handleDataReadEvent(const GattCharacteristicReadCBParams *params) {
rgrover1 490:58a0313fffb5 161 if (onDataRead.hasCallbacksAttached()) {
rgrover1 490:58a0313fffb5 162 onDataRead.call(params);
rgrover1 490:58a0313fffb5 163 }
rgrover1 490:58a0313fffb5 164 }
rgrover1 490:58a0313fffb5 165
rgrover1 490:58a0313fffb5 166 void handleEvent(GattServerEvents::gattEvent_e type, GattAttribute::Handle_t charHandle) {
rgrover1 490:58a0313fffb5 167 switch (type) {
rgrover1 490:58a0313fffb5 168 case GattServerEvents::GATT_EVENT_UPDATES_ENABLED:
rgrover1 490:58a0313fffb5 169 if (onUpdatesEnabled) {
rgrover1 490:58a0313fffb5 170 onUpdatesEnabled(charHandle);
rgrover1 490:58a0313fffb5 171 }
rgrover1 490:58a0313fffb5 172 break;
rgrover1 490:58a0313fffb5 173 case GattServerEvents::GATT_EVENT_UPDATES_DISABLED:
rgrover1 490:58a0313fffb5 174 if (onUpdatesDisabled) {
rgrover1 490:58a0313fffb5 175 onUpdatesDisabled(charHandle);
rgrover1 490:58a0313fffb5 176 }
rgrover1 490:58a0313fffb5 177 break;
rgrover1 490:58a0313fffb5 178 case GattServerEvents::GATT_EVENT_CONFIRMATION_RECEIVED:
rgrover1 490:58a0313fffb5 179 if (onConfirmationReceived) {
rgrover1 490:58a0313fffb5 180 onConfirmationReceived(charHandle);
rgrover1 490:58a0313fffb5 181 }
rgrover1 490:58a0313fffb5 182 break;
rgrover1 490:58a0313fffb5 183 default:
rgrover1 490:58a0313fffb5 184 break;
rgrover1 490:58a0313fffb5 185 }
rgrover1 490:58a0313fffb5 186 }
rgrover1 490:58a0313fffb5 187
rgrover1 490:58a0313fffb5 188 void handleDataSentEvent(unsigned count) {
rgrover1 490:58a0313fffb5 189 if (onDataSent.hasCallbacksAttached()) {
rgrover1 490:58a0313fffb5 190 onDataSent.call(count);
rgrover1 490:58a0313fffb5 191 }
rgrover1 490:58a0313fffb5 192 }
rgrover1 490:58a0313fffb5 193
rgrover1 490:58a0313fffb5 194 protected:
rgrover1 490:58a0313fffb5 195 uint8_t serviceCount;
rgrover1 490:58a0313fffb5 196 uint8_t characteristicCount;
rgrover1 490:58a0313fffb5 197
rgrover1 490:58a0313fffb5 198 private:
rgrover1 490:58a0313fffb5 199 CallChainOfFunctionPointersWithContext<unsigned> onDataSent;
rgrover1 490:58a0313fffb5 200 CallChainOfFunctionPointersWithContext<const GattCharacteristicWriteCBParams *> onDataWritten;
rgrover1 490:58a0313fffb5 201 CallChainOfFunctionPointersWithContext<const GattCharacteristicReadCBParams *> onDataRead;
rgrover1 490:58a0313fffb5 202 EventCallback_t onUpdatesEnabled;
rgrover1 490:58a0313fffb5 203 EventCallback_t onUpdatesDisabled;
rgrover1 490:58a0313fffb5 204 EventCallback_t onConfirmationReceived;
rgrover1 490:58a0313fffb5 205 #endif
rgrover1 490:58a0313fffb5 206
rgrover1 490:58a0313fffb5 207 protected:
rgrover1 490:58a0313fffb5 208 GattClient() {
rgrover1 490:58a0313fffb5 209 /* empty */
rgrover1 490:58a0313fffb5 210 }
rgrover1 490:58a0313fffb5 211
rgrover1 490:58a0313fffb5 212 private:
rgrover1 490:58a0313fffb5 213 /* disallow copy and assignment */
rgrover1 490:58a0313fffb5 214 GattClient(const GattClient &);
rgrover1 490:58a0313fffb5 215 GattClient& operator=(const GattClient &);
rgrover1 490:58a0313fffb5 216 };
rgrover1 490:58a0313fffb5 217
rgrover1 490:58a0313fffb5 218 #endif // ifndef __GATT_CLIENT_H__