Varun Bahl / BahlDecrypModified

Updated

Fork of BLE_API by Bluetooth Low Energy

ble/GattAttribute.h@1161:515032db6feb, 2016-04-06 (annotated)

Committer:
vcoubard
Date:
Wed Apr 06 19:14:49 2016 +0100
Revision:
1161:515032db6feb
Parent:
1132:6362b7c2fdff
Child:
1179:4ab722f8dca0
Synchronized with git rev 55fde779

Author: Andres Amaya Garcia

Add missing docs and fix doxy warnings in GattAttribute.h

Who changed what in which revision?

UserRevisionLine numberNew contents of line
vcoubard 1131:692ddf04fc42 1 /* mbed Microcontroller Library
vcoubard 1131:692ddf04fc42 2 * Copyright (c) 2006-2013 ARM Limited
vcoubard 1131:692ddf04fc42 3 *
vcoubard 1131:692ddf04fc42 4 * Licensed under the Apache License, Version 2.0 (the "License");
vcoubard 1131:692ddf04fc42 5 * you may not use this file except in compliance with the License.
vcoubard 1131:692ddf04fc42 6 * You may obtain a copy of the License at
vcoubard 1131:692ddf04fc42 7 *
vcoubard 1131:692ddf04fc42 8 * http://www.apache.org/licenses/LICENSE-2.0
vcoubard 1131:692ddf04fc42 9 *
vcoubard 1131:692ddf04fc42 10 * Unless required by applicable law or agreed to in writing, software
vcoubard 1131:692ddf04fc42 11 * distributed under the License is distributed on an "AS IS" BASIS,
vcoubard 1131:692ddf04fc42 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
vcoubard 1131:692ddf04fc42 13 * See the License for the specific language governing permissions and
vcoubard 1131:692ddf04fc42 14 * limitations under the License.
vcoubard 1131:692ddf04fc42 15 */
vcoubard 1131:692ddf04fc42 16
vcoubard 1131:692ddf04fc42 17 #ifndef __GATT_ATTRIBUTE_H__
vcoubard 1131:692ddf04fc42 18 #define __GATT_ATTRIBUTE_H__
vcoubard 1131:692ddf04fc42 19
vcoubard 1131:692ddf04fc42 20 #include "UUID.h"
vcoubard 1131:692ddf04fc42 21
vcoubard 1161:515032db6feb 22 /**
vcoubard 1161:515032db6feb 23 * Instances of this class encapsulate the data that belongs to a Bluetooth Low
vcoubard 1161:515032db6feb 24 * Energy attribute.
vcoubard 1161:515032db6feb 25 */
vcoubard 1131:692ddf04fc42 26 class GattAttribute {
vcoubard 1131:692ddf04fc42 27 public:
vcoubard 1161:515032db6feb 28 /**
vcoubard 1161:515032db6feb 29 * Type for the handle or ID of the attribute in the ATT table. These are
vcoubard 1161:515032db6feb 30 * unique and are usually generated by the underlying BLE stack.
vcoubard 1161:515032db6feb 31 */
vcoubard 1131:692ddf04fc42 32 typedef uint16_t Handle_t;
vcoubard 1161:515032db6feb 33 /**
vcoubard 1161:515032db6feb 34 * Define the value of an invalid attribute handle.
vcoubard 1161:515032db6feb 35 */
vcoubard 1131:692ddf04fc42 36 static const Handle_t INVALID_HANDLE = 0x0000;
vcoubard 1131:692ddf04fc42 37
vcoubard 1131:692ddf04fc42 38 public:
vcoubard 1131:692ddf04fc42 39 /**
vcoubard 1131:692ddf04fc42 40 * @brief Creates a new GattAttribute using the specified
vcoubard 1131:692ddf04fc42 41 * UUID, value length, and inital value.
vcoubard 1131:692ddf04fc42 42 *
vcoubard 1131:692ddf04fc42 43 * @param[in] uuid
vcoubard 1131:692ddf04fc42 44 * The UUID to use for this attribute.
vcoubard 1131:692ddf04fc42 45 * @param[in] valuePtr
vcoubard 1131:692ddf04fc42 46 * The memory holding the initial value.
vcoubard 1131:692ddf04fc42 47 * @param[in] len
vcoubard 1131:692ddf04fc42 48 * The length in bytes of this attribute's value.
vcoubard 1131:692ddf04fc42 49 * @param[in] maxLen
vcoubard 1131:692ddf04fc42 50 * The max length in bytes of this attribute's value.
vcoubard 1132:6362b7c2fdff 51 * @param[in] hasVariableLen
vcoubard 1132:6362b7c2fdff 52 * Whether the attribute's value length changes overtime.
vcoubard 1131:692ddf04fc42 53 *
vcoubard 1131:692ddf04fc42 54 * @section EXAMPLE
vcoubard 1131:692ddf04fc42 55 *
vcoubard 1131:692ddf04fc42 56 * @code
vcoubard 1131:692ddf04fc42 57 *
vcoubard 1131:692ddf04fc42 58 * // UUID = 0x2A19, Min length 2, Max len = 2
vcoubard 1131:692ddf04fc42 59 * GattAttribute attr = GattAttribute(0x2A19, &someValue, 2, 2);
vcoubard 1131:692ddf04fc42 60 *
vcoubard 1131:692ddf04fc42 61 * @endcode
vcoubard 1131:692ddf04fc42 62 */
vcoubard 1132:6362b7c2fdff 63 GattAttribute(const UUID &uuid, uint8_t *valuePtr = NULL, uint16_t len = 0, uint16_t maxLen = 0, bool hasVariableLen = true) :
vcoubard 1132:6362b7c2fdff 64 _uuid(uuid), _valuePtr(valuePtr), _lenMax(maxLen), _len(len), _hasVariableLen(hasVariableLen), _handle() {
vcoubard 1131:692ddf04fc42 65 /* Empty */
vcoubard 1131:692ddf04fc42 66 }
vcoubard 1131:692ddf04fc42 67
vcoubard 1131:692ddf04fc42 68 public:
vcoubard 1161:515032db6feb 69 /**
vcoubard 1161:515032db6feb 70 * Get the attribute's handle in the ATT table.
vcoubard 1161:515032db6feb 71 *
vcoubard 1161:515032db6feb 72 * @return The attribute's handle.
vcoubard 1161:515032db6feb 73 */
vcoubard 1161:515032db6feb 74 Handle_t getHandle(void) const {
vcoubard 1161:515032db6feb 75 return _handle;
vcoubard 1161:515032db6feb 76 }
vcoubard 1161:515032db6feb 77
vcoubard 1161:515032db6feb 78 /**
vcoubard 1161:515032db6feb 79 * The UUID of the characteristic that this attribute belongs to.
vcoubard 1161:515032db6feb 80 *
vcoubard 1161:515032db6feb 81 * @return The characteristic's UUID.
vcoubard 1161:515032db6feb 82 */
vcoubard 1161:515032db6feb 83 const UUID &getUUID(void) const {
vcoubard 1161:515032db6feb 84 return _uuid;
vcoubard 1161:515032db6feb 85 }
vcoubard 1161:515032db6feb 86
vcoubard 1161:515032db6feb 87 /**
vcoubard 1161:515032db6feb 88 * Get the current length of the attribute value.
vcoubard 1161:515032db6feb 89 *
vcoubard 1161:515032db6feb 90 * @return The current length of the attribute value.
vcoubard 1161:515032db6feb 91 */
vcoubard 1161:515032db6feb 92 uint16_t getLength(void) const {
vcoubard 1161:515032db6feb 93 return _len;
vcoubard 1161:515032db6feb 94 }
vcoubard 1161:515032db6feb 95
vcoubard 1161:515032db6feb 96 /**
vcoubard 1161:515032db6feb 97 * Get the maximum length of the attribute value.
vcoubard 1161:515032db6feb 98 *
vcoubard 1161:515032db6feb 99 * The maximum length of the attribute value.
vcoubard 1161:515032db6feb 100 */
vcoubard 1161:515032db6feb 101 uint16_t getMaxLength(void) const {
vcoubard 1161:515032db6feb 102 return _lenMax;
vcoubard 1161:515032db6feb 103 }
vcoubard 1161:515032db6feb 104
vcoubard 1161:515032db6feb 105 /**
vcoubard 1161:515032db6feb 106 * Get a pointer to the current length of the attribute value.
vcoubard 1161:515032db6feb 107 *
vcoubard 1161:515032db6feb 108 * @return A pointer to the current length of the attribute value.
vcoubard 1161:515032db6feb 109 */
vcoubard 1161:515032db6feb 110 uint16_t *getLengthPtr(void) {
vcoubard 1161:515032db6feb 111 return &_len;
vcoubard 1161:515032db6feb 112 }
vcoubard 1161:515032db6feb 113
vcoubard 1161:515032db6feb 114 /**
vcoubard 1161:515032db6feb 115 * Set the attribute handle.
vcoubard 1161:515032db6feb 116 *
vcoubard 1161:515032db6feb 117 * @param[in] id
vcoubard 1161:515032db6feb 118 * The new attribute handle.
vcoubard 1161:515032db6feb 119 */
vcoubard 1161:515032db6feb 120 void setHandle(Handle_t id) {
vcoubard 1161:515032db6feb 121 _handle = id;
vcoubard 1161:515032db6feb 122 }
vcoubard 1161:515032db6feb 123
vcoubard 1161:515032db6feb 124 /**
vcoubard 1161:515032db6feb 125 * Get a pointer to the attribute value.
vcoubard 1161:515032db6feb 126 *
vcoubard 1161:515032db6feb 127 * @return A pointer to the attribute value.
vcoubard 1161:515032db6feb 128 */
vcoubard 1161:515032db6feb 129 uint8_t *getValuePtr(void) {
vcoubard 1161:515032db6feb 130 return _valuePtr;
vcoubard 1161:515032db6feb 131 }
vcoubard 1161:515032db6feb 132
vcoubard 1161:515032db6feb 133 /**
vcoubard 1161:515032db6feb 134 * Check whether the length of the attribute's value can change over time.
vcoubard 1161:515032db6feb 135 *
vcoubard 1161:515032db6feb 136 * @return true if the attribute has variable length, false otherwise.
vcoubard 1161:515032db6feb 137 */
vcoubard 1161:515032db6feb 138 bool hasVariableLength(void) const {
vcoubard 1161:515032db6feb 139 return _hasVariableLen;
vcoubard 1161:515032db6feb 140 }
vcoubard 1131:692ddf04fc42 141
vcoubard 1131:692ddf04fc42 142 private:
vcoubard 1161:515032db6feb 143 /**
vcoubard 1161:515032db6feb 144 * Characteristic's UUID.
vcoubard 1161:515032db6feb 145 */
vcoubard 1161:515032db6feb 146 UUID _uuid;
vcoubard 1161:515032db6feb 147 /**
vcoubard 1161:515032db6feb 148 * Pointer to the attribute's value.
vcoubard 1161:515032db6feb 149 */
vcoubard 1131:692ddf04fc42 150 uint8_t *_valuePtr;
vcoubard 1161:515032db6feb 151 /**
vcoubard 1161:515032db6feb 152 * Maximum length of the value pointed to by GattAttribute::_valuePtr.
vcoubard 1161:515032db6feb 153 */
vcoubard 1161:515032db6feb 154 uint16_t _lenMax;
vcoubard 1161:515032db6feb 155 /**
vcoubard 1161:515032db6feb 156 * Current length of the value pointed to by GattAttribute::_valuePtr.
vcoubard 1161:515032db6feb 157 */
vcoubard 1161:515032db6feb 158 uint16_t _len;
vcoubard 1161:515032db6feb 159 /**
vcoubard 1161:515032db6feb 160 * Whether the length of the value can change over time.
vcoubard 1161:515032db6feb 161 */
vcoubard 1132:6362b7c2fdff 162 bool _hasVariableLen;
vcoubard 1161:515032db6feb 163 /**
vcoubard 1161:515032db6feb 164 * The attribute's handle in the ATT table.
vcoubard 1161:515032db6feb 165 */
vcoubard 1131:692ddf04fc42 166 Handle_t _handle;
vcoubard 1131:692ddf04fc42 167
vcoubard 1131:692ddf04fc42 168 private:
vcoubard 1131:692ddf04fc42 169 /* Disallow copy and assignment. */
vcoubard 1131:692ddf04fc42 170 GattAttribute(const GattAttribute &);
vcoubard 1131:692ddf04fc42 171 GattAttribute& operator=(const GattAttribute &);
vcoubard 1131:692ddf04fc42 172 };
vcoubard 1131:692ddf04fc42 173
vcoubard 1161:515032db6feb 174 #endif /* ifndef __GATT_ATTRIBUTE_H__ */