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

public/UUID.h@480:67700bd40bd3, 2015-06-19 (annotated)

Committer:
rgrover1
Date:
Fri Jun 19 15:52:00 2015 +0100
Revision:
480:67700bd40bd3
Parent:
464:c99b83a7ea55
Child:
483:7595444f93d6
Synchronized with git rev ff8ff267

Author: Rohit Grover

define operator!= for UUID

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rgrover1 462:8a86b66ba4de 1 /* mbed Microcontroller Library
rgrover1 462:8a86b66ba4de 2 * Copyright (c) 2006-2013 ARM Limited
rgrover1 462:8a86b66ba4de 3 *
rgrover1 462:8a86b66ba4de 4 * Licensed under the Apache License, Version 2.0 (the "License");
rgrover1 462:8a86b66ba4de 5 * you may not use this file except in compliance with the License.
rgrover1 462:8a86b66ba4de 6 * You may obtain a copy of the License at
rgrover1 462:8a86b66ba4de 7 *
rgrover1 462:8a86b66ba4de 8 * http://www.apache.org/licenses/LICENSE-2.0
rgrover1 462:8a86b66ba4de 9 *
rgrover1 462:8a86b66ba4de 10 * Unless required by applicable law or agreed to in writing, software
rgrover1 462:8a86b66ba4de 11 * distributed under the License is distributed on an "AS IS" BASIS,
rgrover1 462:8a86b66ba4de 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
rgrover1 462:8a86b66ba4de 13 * See the License for the specific language governing permissions and
rgrover1 462:8a86b66ba4de 14 * limitations under the License.
rgrover1 462:8a86b66ba4de 15 */
rgrover1 462:8a86b66ba4de 16
rgrover1 462:8a86b66ba4de 17 #ifndef __UUID_H__
rgrover1 462:8a86b66ba4de 18 #define __UUID_H__
rgrover1 462:8a86b66ba4de 19
rgrover1 462:8a86b66ba4de 20 #include <string.h>
rgrover1 462:8a86b66ba4de 21
rgrover1 462:8a86b66ba4de 22 #include "blecommon.h"
rgrover1 462:8a86b66ba4de 23
rgrover1 462:8a86b66ba4de 24 class UUID {
rgrover1 462:8a86b66ba4de 25 public:
rgrover1 462:8a86b66ba4de 26 enum UUID_Type_t {
rgrover1 462:8a86b66ba4de 27 UUID_TYPE_SHORT = 0, // Short BLE UUID
rgrover1 462:8a86b66ba4de 28 UUID_TYPE_LONG = 1 // Full 128-bit UUID
rgrover1 462:8a86b66ba4de 29 };
rgrover1 462:8a86b66ba4de 30
rgrover1 463:fd7a5b8d81bd 31 typedef uint16_t ShortUUIDBytes_t;
rgrover1 462:8a86b66ba4de 32 static const unsigned LENGTH_OF_LONG_UUID = 16;
rgrover1 463:fd7a5b8d81bd 33 typedef uint8_t LongUUIDBytes_t[LENGTH_OF_LONG_UUID];
rgrover1 462:8a86b66ba4de 34
rgrover1 462:8a86b66ba4de 35 public:
rgrover1 462:8a86b66ba4de 36 /**
rgrover1 462:8a86b66ba4de 37 * Creates a new 128-bit UUID
rgrover1 462:8a86b66ba4de 38 *
rgrover1 462:8a86b66ba4de 39 * @note The UUID is a unique 128-bit (16 byte) ID used to identify
rgrover1 462:8a86b66ba4de 40 * different service or characteristics on the BLE device.
rgrover1 462:8a86b66ba4de 41 *
rgrover1 462:8a86b66ba4de 42 * @param longUUID
rgrover1 462:8a86b66ba4de 43 * The 128-bit (16-byte) UUID value, MSB first (big-endian).
rgrover1 462:8a86b66ba4de 44 */
rgrover1 462:8a86b66ba4de 45 UUID(const LongUUIDBytes_t longUUID) : type(UUID_TYPE_LONG), baseUUID(), shortUUID(0) {
rgrover1 464:c99b83a7ea55 46 setupLong(longUUID);
rgrover1 462:8a86b66ba4de 47 }
rgrover1 462:8a86b66ba4de 48
rgrover1 462:8a86b66ba4de 49 /**
rgrover1 462:8a86b66ba4de 50 * Creates a new 16-bit UUID
rgrover1 462:8a86b66ba4de 51 *
rgrover1 462:8a86b66ba4de 52 * @note The UUID is a unique 16-bit (2 byte) ID used to identify
rgrover1 462:8a86b66ba4de 53 * different service or characteristics on the BLE device.
rgrover1 462:8a86b66ba4de 54 *
rgrover1 462:8a86b66ba4de 55 * For efficiency, and because 16 bytes would take a large chunk of the
rgrover1 462:8a86b66ba4de 56 * 27-byte data payload length of the Link Layer, the BLE specification adds
rgrover1 462:8a86b66ba4de 57 * two additional UUID formats: 16-bit and 32-bit UUIDs. These shortened
rgrover1 462:8a86b66ba4de 58 * formats can be used only with UUIDs that are defined in the Bluetooth
rgrover1 462:8a86b66ba4de 59 * specification (i.e., that are listed by the Bluetooth SIG as standard
rgrover1 462:8a86b66ba4de 60 * Bluetooth UUIDs).
rgrover1 462:8a86b66ba4de 61 *
rgrover1 462:8a86b66ba4de 62 * To reconstruct the full 128-bit UUID from the shortened version, insert
rgrover1 462:8a86b66ba4de 63 * the 16-bit short value (indicated by xxxx, including leading zeros) into
rgrover1 462:8a86b66ba4de 64 * the Bluetooth Base UUID:
rgrover1 462:8a86b66ba4de 65 *
rgrover1 462:8a86b66ba4de 66 * 0000xxxx-0000-1000-8000-00805F9B34FB
rgrover1 462:8a86b66ba4de 67 *
rgrover1 462:8a86b66ba4de 68 * @note Shortening is not available for UUIDs that are not derived from the
rgrover1 462:8a86b66ba4de 69 * Bluetooth Base UUID. Such non-standard UUIDs are commonly called
rgrover1 462:8a86b66ba4de 70 * vendor-specific UUIDs. In these cases, you’ll need to use the full
rgrover1 462:8a86b66ba4de 71 * 128-bit UUID value at all times.
rgrover1 462:8a86b66ba4de 72 *
rgrover1 462:8a86b66ba4de 73 * @note we don't yet support 32-bit shortened UUIDs.
rgrover1 462:8a86b66ba4de 74 */
rgrover1 462:8a86b66ba4de 75 UUID(ShortUUIDBytes_t shortUUID) : type(UUID_TYPE_SHORT), baseUUID(), shortUUID(shortUUID) {
rgrover1 462:8a86b66ba4de 76 /* empty */
rgrover1 462:8a86b66ba4de 77 }
rgrover1 462:8a86b66ba4de 78
rgrover1 462:8a86b66ba4de 79 UUID(const UUID &source) {
rgrover1 462:8a86b66ba4de 80 type = source.type;
rgrover1 462:8a86b66ba4de 81 shortUUID = source.shortUUID;
rgrover1 462:8a86b66ba4de 82 memcpy(baseUUID, source.baseUUID, LENGTH_OF_LONG_UUID);
rgrover1 462:8a86b66ba4de 83 }
rgrover1 462:8a86b66ba4de 84
rgrover1 462:8a86b66ba4de 85 UUID(void) : type(UUID_TYPE_SHORT), shortUUID(BLE_UUID_UNKNOWN) {
rgrover1 462:8a86b66ba4de 86 /* empty */
rgrover1 462:8a86b66ba4de 87 }
rgrover1 462:8a86b66ba4de 88
rgrover1 464:c99b83a7ea55 89 /**
rgrover1 464:c99b83a7ea55 90 * Fill in a 128-bit UUID; this is useful when UUID isn't known at the time of object construction.
rgrover1 464:c99b83a7ea55 91 */
rgrover1 464:c99b83a7ea55 92 void setupLong(const LongUUIDBytes_t longUUID) {
rgrover1 464:c99b83a7ea55 93 type = UUID_TYPE_LONG;
rgrover1 464:c99b83a7ea55 94 memcpy(baseUUID, longUUID, LENGTH_OF_LONG_UUID);
rgrover1 464:c99b83a7ea55 95 shortUUID = (uint16_t)((longUUID[2] << 8) | (longUUID[3]));
rgrover1 464:c99b83a7ea55 96 }
rgrover1 464:c99b83a7ea55 97
rgrover1 462:8a86b66ba4de 98 public:
rgrover1 462:8a86b66ba4de 99 UUID_Type_t shortOrLong(void) const {return type; }
rgrover1 462:8a86b66ba4de 100 const uint8_t *getBaseUUID(void) const {
rgrover1 462:8a86b66ba4de 101 if (type == UUID_TYPE_SHORT) {
rgrover1 462:8a86b66ba4de 102 return (const uint8_t*)&shortUUID;
rgrover1 462:8a86b66ba4de 103 } else {
rgrover1 462:8a86b66ba4de 104 return baseUUID;
rgrover1 462:8a86b66ba4de 105 }
rgrover1 462:8a86b66ba4de 106 }
rgrover1 462:8a86b66ba4de 107
rgrover1 462:8a86b66ba4de 108 ShortUUIDBytes_t getShortUUID(void) const {return shortUUID;}
rgrover1 462:8a86b66ba4de 109 uint8_t getLen(void) const {
rgrover1 462:8a86b66ba4de 110 return ((type == UUID_TYPE_SHORT) ? sizeof(ShortUUIDBytes_t) : LENGTH_OF_LONG_UUID);
rgrover1 462:8a86b66ba4de 111 }
rgrover1 462:8a86b66ba4de 112
rgrover1 462:8a86b66ba4de 113 bool operator== (const UUID &other) const {
rgrover1 462:8a86b66ba4de 114 if ((this->type == UUID_TYPE_SHORT) && (other.type == UUID_TYPE_SHORT) &&
rgrover1 462:8a86b66ba4de 115 (this->shortUUID == other.shortUUID)) {
rgrover1 462:8a86b66ba4de 116 return true;
rgrover1 462:8a86b66ba4de 117 }
rgrover1 462:8a86b66ba4de 118
rgrover1 462:8a86b66ba4de 119 if ((this->type == UUID_TYPE_LONG) && (other.type == UUID_TYPE_LONG) &&
rgrover1 462:8a86b66ba4de 120 (memcmp(this->baseUUID, other.baseUUID, LENGTH_OF_LONG_UUID) == 0)) {
rgrover1 462:8a86b66ba4de 121 return true;
rgrover1 462:8a86b66ba4de 122 }
rgrover1 462:8a86b66ba4de 123
rgrover1 462:8a86b66ba4de 124 return false;
rgrover1 462:8a86b66ba4de 125 }
rgrover1 462:8a86b66ba4de 126
rgrover1 480:67700bd40bd3 127 bool operator!= (const UUID &other) const {
rgrover1 480:67700bd40bd3 128 return !(*this == other);
rgrover1 480:67700bd40bd3 129 }
rgrover1 480:67700bd40bd3 130
rgrover1 462:8a86b66ba4de 131 private:
rgrover1 462:8a86b66ba4de 132 UUID_Type_t type; // UUID_TYPE_SHORT or UUID_TYPE_LONG
rgrover1 462:8a86b66ba4de 133 LongUUIDBytes_t baseUUID; /* the base of the long UUID (if
rgrover1 462:8a86b66ba4de 134 * used). Note: bytes 12 and 13 (counting from LSB)
rgrover1 462:8a86b66ba4de 135 * are zeroed out to allow comparison with other long
rgrover1 462:8a86b66ba4de 136 * UUIDs which differ only in the 16-bit relative
rgrover1 462:8a86b66ba4de 137 * part.*/
rgrover1 462:8a86b66ba4de 138 ShortUUIDBytes_t shortUUID; // 16 bit uuid (byte 2-3 using with base)
rgrover1 462:8a86b66ba4de 139 };
rgrover1 462:8a86b66ba4de 140
rgrover1 462:8a86b66ba4de 141 #endif // ifndef __UUID_H__