Wang Xinglu / BLE_API

High level Bluetooth Low Energy API and radio abstraction layer

Dependencies:   nRF51822

Dependents:   LinkNode_LIS3DH

Fork of BLE_API by Bluetooth Low Energy

ble/GattAttribute.h@1132:6362b7c2fdff, 2016-04-06 (annotated)

Committer:
vcoubard
Date:
Wed Apr 06 19:13:49 2016 +0100
Revision:
1132:6362b7c2fdff
Parent:
1131:692ddf04fc42
Child:
1161:515032db6feb
Synchronized with git rev 35adda98

Author: Rohit Grover

Release 2.1.6

=============



Minor update around GattCharacteristics having variable length.

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 1131:692ddf04fc42 22 class GattAttribute {
vcoubard 1131:692ddf04fc42 23 public:
vcoubard 1131:692ddf04fc42 24 typedef uint16_t Handle_t;
vcoubard 1131:692ddf04fc42 25 static const Handle_t INVALID_HANDLE = 0x0000;
vcoubard 1131:692ddf04fc42 26
vcoubard 1131:692ddf04fc42 27 public:
vcoubard 1131:692ddf04fc42 28 /**
vcoubard 1131:692ddf04fc42 29 * @brief Creates a new GattAttribute using the specified
vcoubard 1131:692ddf04fc42 30 * UUID, value length, and inital value.
vcoubard 1131:692ddf04fc42 31 *
vcoubard 1131:692ddf04fc42 32 * @param[in] uuid
vcoubard 1131:692ddf04fc42 33 * The UUID to use for this attribute.
vcoubard 1131:692ddf04fc42 34 * @param[in] valuePtr
vcoubard 1131:692ddf04fc42 35 * The memory holding the initial value.
vcoubard 1131:692ddf04fc42 36 * @param[in] len
vcoubard 1131:692ddf04fc42 37 * The length in bytes of this attribute's value.
vcoubard 1131:692ddf04fc42 38 * @param[in] maxLen
vcoubard 1131:692ddf04fc42 39 * The max length in bytes of this attribute's value.
vcoubard 1132:6362b7c2fdff 40 * @param[in] hasVariableLen
vcoubard 1132:6362b7c2fdff 41 * Whether the attribute's value length changes overtime.
vcoubard 1131:692ddf04fc42 42 *
vcoubard 1131:692ddf04fc42 43 * @section EXAMPLE
vcoubard 1131:692ddf04fc42 44 *
vcoubard 1131:692ddf04fc42 45 * @code
vcoubard 1131:692ddf04fc42 46 *
vcoubard 1131:692ddf04fc42 47 * // UUID = 0x2A19, Min length 2, Max len = 2
vcoubard 1131:692ddf04fc42 48 * GattAttribute attr = GattAttribute(0x2A19, &someValue, 2, 2);
vcoubard 1131:692ddf04fc42 49 *
vcoubard 1131:692ddf04fc42 50 * @endcode
vcoubard 1131:692ddf04fc42 51 */
vcoubard 1132:6362b7c2fdff 52 GattAttribute(const UUID &uuid, uint8_t *valuePtr = NULL, uint16_t len = 0, uint16_t maxLen = 0, bool hasVariableLen = true) :
vcoubard 1132:6362b7c2fdff 53 _uuid(uuid), _valuePtr(valuePtr), _lenMax(maxLen), _len(len), _hasVariableLen(hasVariableLen), _handle() {
vcoubard 1131:692ddf04fc42 54 /* Empty */
vcoubard 1131:692ddf04fc42 55 }
vcoubard 1131:692ddf04fc42 56
vcoubard 1131:692ddf04fc42 57 public:
vcoubard 1132:6362b7c2fdff 58 Handle_t getHandle(void) const {return _handle; }
vcoubard 1132:6362b7c2fdff 59 const UUID &getUUID(void) const {return _uuid; }
vcoubard 1132:6362b7c2fdff 60 uint16_t getLength(void) const {return _len; }
vcoubard 1132:6362b7c2fdff 61 uint16_t getMaxLength(void) const {return _lenMax; }
vcoubard 1132:6362b7c2fdff 62 uint16_t *getLengthPtr(void) {return &_len; }
vcoubard 1132:6362b7c2fdff 63 void setHandle(Handle_t id) {_handle = id; }
vcoubard 1132:6362b7c2fdff 64 uint8_t *getValuePtr(void) {return _valuePtr; }
vcoubard 1132:6362b7c2fdff 65 bool hasVariableLength(void) const {return _hasVariableLen;}
vcoubard 1131:692ddf04fc42 66
vcoubard 1131:692ddf04fc42 67 private:
vcoubard 1132:6362b7c2fdff 68 UUID _uuid; /* Characteristic UUID. */
vcoubard 1131:692ddf04fc42 69 uint8_t *_valuePtr;
vcoubard 1132:6362b7c2fdff 70 uint16_t _lenMax; /* Maximum length of the value. */
vcoubard 1132:6362b7c2fdff 71 uint16_t _len; /* Current length of the value. */
vcoubard 1132:6362b7c2fdff 72 bool _hasVariableLen;
vcoubard 1131:692ddf04fc42 73 Handle_t _handle;
vcoubard 1131:692ddf04fc42 74
vcoubard 1131:692ddf04fc42 75 private:
vcoubard 1131:692ddf04fc42 76 /* Disallow copy and assignment. */
vcoubard 1131:692ddf04fc42 77 GattAttribute(const GattAttribute &);
vcoubard 1131:692ddf04fc42 78 GattAttribute& operator=(const GattAttribute &);
vcoubard 1131:692ddf04fc42 79 };
vcoubard 1131:692ddf04fc42 80
rgrover1 710:b2e1a2660ec2 81 #endif // ifndef __GATT_ATTRIBUTE_H__