Updated
Fork of BLE_API by
ble/UUID.h@1131:692ddf04fc42, 2016-04-06 (annotated)
- Committer:
- vcoubard
- Date:
- Wed Apr 06 19:13:46 2016 +0100
- Revision:
- 1131:692ddf04fc42
- Parent:
- 1056:ce2fb3d09929
- Child:
- 1134:d540a48f650d
Synchronized with git rev 13bf70b6
Author: Rohit Grover
Release 2.1.5
=============
A minor release to separate the concept of minlen and len in
GattCharacteristic. Also contains some improvements to documentation.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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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 __UUID_H__ |
vcoubard | 1131:692ddf04fc42 | 18 | #define __UUID_H__ |
vcoubard | 1131:692ddf04fc42 | 19 | |
vcoubard | 1131:692ddf04fc42 | 20 | #include <stdint.h> |
vcoubard | 1131:692ddf04fc42 | 21 | #include <string.h> |
vcoubard | 1131:692ddf04fc42 | 22 | |
vcoubard | 1131:692ddf04fc42 | 23 | #include "blecommon.h" |
vcoubard | 1131:692ddf04fc42 | 24 | |
vcoubard | 1131:692ddf04fc42 | 25 | class UUID { |
vcoubard | 1131:692ddf04fc42 | 26 | public: |
vcoubard | 1131:692ddf04fc42 | 27 | enum UUID_Type_t { |
vcoubard | 1131:692ddf04fc42 | 28 | UUID_TYPE_SHORT = 0, // Short BLE UUID. |
vcoubard | 1131:692ddf04fc42 | 29 | UUID_TYPE_LONG = 1 // Full 128-bit UUID. |
vcoubard | 1131:692ddf04fc42 | 30 | }; |
vcoubard | 1131:692ddf04fc42 | 31 | |
vcoubard | 1131:692ddf04fc42 | 32 | typedef uint16_t ShortUUIDBytes_t; |
vcoubard | 1131:692ddf04fc42 | 33 | |
vcoubard | 1131:692ddf04fc42 | 34 | static const unsigned LENGTH_OF_LONG_UUID = 16; |
vcoubard | 1131:692ddf04fc42 | 35 | typedef uint8_t LongUUIDBytes_t[LENGTH_OF_LONG_UUID]; |
vcoubard | 1131:692ddf04fc42 | 36 | |
vcoubard | 1131:692ddf04fc42 | 37 | public: |
vcoubard | 1131:692ddf04fc42 | 38 | /** |
vcoubard | 1131:692ddf04fc42 | 39 | * Creates a new 128-bit UUID. |
vcoubard | 1131:692ddf04fc42 | 40 | * |
vcoubard | 1131:692ddf04fc42 | 41 | * @note The UUID is a unique 128-bit (16 byte) ID used to identify |
vcoubard | 1131:692ddf04fc42 | 42 | * different service or characteristics on the BLE device. |
vcoubard | 1131:692ddf04fc42 | 43 | * |
vcoubard | 1131:692ddf04fc42 | 44 | * @param longUUID |
vcoubard | 1131:692ddf04fc42 | 45 | * The 128-bit (16-byte) UUID value, MSB first (big-endian). |
vcoubard | 1131:692ddf04fc42 | 46 | */ |
vcoubard | 1131:692ddf04fc42 | 47 | UUID(const LongUUIDBytes_t longUUID) : type(UUID_TYPE_LONG), baseUUID(), shortUUID(0) { |
vcoubard | 1131:692ddf04fc42 | 48 | setupLong(longUUID); |
vcoubard | 1131:692ddf04fc42 | 49 | } |
vcoubard | 1131:692ddf04fc42 | 50 | |
vcoubard | 1131:692ddf04fc42 | 51 | /** |
vcoubard | 1131:692ddf04fc42 | 52 | * Creates a new 16-bit UUID. |
vcoubard | 1131:692ddf04fc42 | 53 | * |
vcoubard | 1131:692ddf04fc42 | 54 | * @note The UUID is a unique 16-bit (2 byte) ID used to identify |
vcoubard | 1131:692ddf04fc42 | 55 | * different service or characteristics on the BLE device. |
vcoubard | 1131:692ddf04fc42 | 56 | * |
vcoubard | 1131:692ddf04fc42 | 57 | * For efficiency, and because 16 bytes would take a large chunk of the |
vcoubard | 1131:692ddf04fc42 | 58 | * 27-byte data payload length of the Link Layer, the BLE specification adds |
vcoubard | 1131:692ddf04fc42 | 59 | * two additional UUID formats: 16-bit and 32-bit UUIDs. These shortened |
vcoubard | 1131:692ddf04fc42 | 60 | * formats can be used only with UUIDs that are defined in the Bluetooth |
vcoubard | 1131:692ddf04fc42 | 61 | * specification (listed by the Bluetooth SIG as standard |
vcoubard | 1131:692ddf04fc42 | 62 | * Bluetooth UUIDs). |
vcoubard | 1131:692ddf04fc42 | 63 | * |
vcoubard | 1131:692ddf04fc42 | 64 | * To reconstruct the full 128-bit UUID from the shortened version, insert |
vcoubard | 1131:692ddf04fc42 | 65 | * the 16-bit short value (indicated by xxxx, including leading zeros) into |
vcoubard | 1131:692ddf04fc42 | 66 | * the Bluetooth Base UUID: |
vcoubard | 1131:692ddf04fc42 | 67 | * |
vcoubard | 1131:692ddf04fc42 | 68 | * 0000xxxx-0000-1000-8000-00805F9B34FB |
vcoubard | 1131:692ddf04fc42 | 69 | * |
vcoubard | 1131:692ddf04fc42 | 70 | * @note Shortening is not available for UUIDs that are not derived from the |
vcoubard | 1131:692ddf04fc42 | 71 | * Bluetooth Base UUID. Such non-standard UUIDs are commonly called |
vcoubard | 1131:692ddf04fc42 | 72 | * vendor-specific UUIDs. In these cases, you’ll need to use the full |
vcoubard | 1131:692ddf04fc42 | 73 | * 128-bit UUID value at all times. |
vcoubard | 1131:692ddf04fc42 | 74 | * |
vcoubard | 1131:692ddf04fc42 | 75 | * @note We don't yet support 32-bit shortened UUIDs. |
vcoubard | 1131:692ddf04fc42 | 76 | */ |
vcoubard | 1131:692ddf04fc42 | 77 | UUID(ShortUUIDBytes_t _shortUUID) : type(UUID_TYPE_SHORT), baseUUID(), shortUUID(_shortUUID) { |
vcoubard | 1131:692ddf04fc42 | 78 | /* Empty */ |
vcoubard | 1131:692ddf04fc42 | 79 | } |
vcoubard | 1131:692ddf04fc42 | 80 | |
vcoubard | 1131:692ddf04fc42 | 81 | UUID(const UUID &source) { |
vcoubard | 1131:692ddf04fc42 | 82 | type = source.type; |
vcoubard | 1131:692ddf04fc42 | 83 | shortUUID = source.shortUUID; |
vcoubard | 1131:692ddf04fc42 | 84 | memcpy(baseUUID, source.baseUUID, LENGTH_OF_LONG_UUID); |
vcoubard | 1131:692ddf04fc42 | 85 | } |
vcoubard | 1131:692ddf04fc42 | 86 | |
vcoubard | 1131:692ddf04fc42 | 87 | UUID(void) : type(UUID_TYPE_SHORT), shortUUID(BLE_UUID_UNKNOWN) { |
vcoubard | 1131:692ddf04fc42 | 88 | /* empty */ |
vcoubard | 1131:692ddf04fc42 | 89 | } |
vcoubard | 1131:692ddf04fc42 | 90 | |
vcoubard | 1131:692ddf04fc42 | 91 | /** |
vcoubard | 1131:692ddf04fc42 | 92 | * Fill in a 128-bit UUID; this is useful when the UUID isn't known at the time of the object construction. |
vcoubard | 1131:692ddf04fc42 | 93 | */ |
vcoubard | 1131:692ddf04fc42 | 94 | void setupLong(const LongUUIDBytes_t longUUID) { |
vcoubard | 1131:692ddf04fc42 | 95 | type = UUID_TYPE_LONG; |
vcoubard | 1131:692ddf04fc42 | 96 | memcpy(baseUUID, longUUID, LENGTH_OF_LONG_UUID); |
vcoubard | 1131:692ddf04fc42 | 97 | shortUUID = (uint16_t)((longUUID[2] << 8) | (longUUID[3])); |
vcoubard | 1131:692ddf04fc42 | 98 | } |
vcoubard | 1131:692ddf04fc42 | 99 | |
vcoubard | 1131:692ddf04fc42 | 100 | public: |
vcoubard | 1131:692ddf04fc42 | 101 | UUID_Type_t shortOrLong(void) const {return type; } |
vcoubard | 1131:692ddf04fc42 | 102 | const uint8_t *getBaseUUID(void) const { |
vcoubard | 1131:692ddf04fc42 | 103 | if (type == UUID_TYPE_SHORT) { |
vcoubard | 1131:692ddf04fc42 | 104 | return (const uint8_t*)&shortUUID; |
vcoubard | 1131:692ddf04fc42 | 105 | } else { |
vcoubard | 1131:692ddf04fc42 | 106 | return baseUUID; |
vcoubard | 1131:692ddf04fc42 | 107 | } |
vcoubard | 1131:692ddf04fc42 | 108 | } |
vcoubard | 1131:692ddf04fc42 | 109 | |
vcoubard | 1131:692ddf04fc42 | 110 | ShortUUIDBytes_t getShortUUID(void) const {return shortUUID;} |
vcoubard | 1131:692ddf04fc42 | 111 | uint8_t getLen(void) const { |
vcoubard | 1131:692ddf04fc42 | 112 | return ((type == UUID_TYPE_SHORT) ? sizeof(ShortUUIDBytes_t) : LENGTH_OF_LONG_UUID); |
vcoubard | 1131:692ddf04fc42 | 113 | } |
vcoubard | 1131:692ddf04fc42 | 114 | |
vcoubard | 1131:692ddf04fc42 | 115 | bool operator== (const UUID &other) const { |
vcoubard | 1131:692ddf04fc42 | 116 | if ((this->type == UUID_TYPE_SHORT) && (other.type == UUID_TYPE_SHORT) && |
vcoubard | 1131:692ddf04fc42 | 117 | (this->shortUUID == other.shortUUID)) { |
vcoubard | 1131:692ddf04fc42 | 118 | return true; |
vcoubard | 1131:692ddf04fc42 | 119 | } |
vcoubard | 1131:692ddf04fc42 | 120 | |
vcoubard | 1131:692ddf04fc42 | 121 | if ((this->type == UUID_TYPE_LONG) && (other.type == UUID_TYPE_LONG) && |
vcoubard | 1131:692ddf04fc42 | 122 | (memcmp(this->baseUUID, other.baseUUID, LENGTH_OF_LONG_UUID) == 0)) { |
vcoubard | 1131:692ddf04fc42 | 123 | return true; |
vcoubard | 1131:692ddf04fc42 | 124 | } |
vcoubard | 1131:692ddf04fc42 | 125 | |
vcoubard | 1131:692ddf04fc42 | 126 | return false; |
vcoubard | 1131:692ddf04fc42 | 127 | } |
vcoubard | 1131:692ddf04fc42 | 128 | |
vcoubard | 1131:692ddf04fc42 | 129 | bool operator!= (const UUID &other) const { |
vcoubard | 1131:692ddf04fc42 | 130 | return !(*this == other); |
vcoubard | 1131:692ddf04fc42 | 131 | } |
vcoubard | 1131:692ddf04fc42 | 132 | |
vcoubard | 1131:692ddf04fc42 | 133 | private: |
vcoubard | 1131:692ddf04fc42 | 134 | UUID_Type_t type; // UUID_TYPE_SHORT or UUID_TYPE_LONG |
vcoubard | 1131:692ddf04fc42 | 135 | LongUUIDBytes_t baseUUID; /* The base of the long UUID (if |
vcoubard | 1131:692ddf04fc42 | 136 | * used). Note: bytes 12 and 13 (counting from LSB) |
vcoubard | 1131:692ddf04fc42 | 137 | * are zeroed out to allow comparison with other long |
vcoubard | 1131:692ddf04fc42 | 138 | * UUIDs, which differ only in the 16-bit relative |
vcoubard | 1131:692ddf04fc42 | 139 | * part.*/ |
vcoubard | 1131:692ddf04fc42 | 140 | ShortUUIDBytes_t shortUUID; // 16 bit UUID (byte 2-3 using with base). |
vcoubard | 1131:692ddf04fc42 | 141 | }; |
vcoubard | 1131:692ddf04fc42 | 142 | |
rgrover1 | 710:b2e1a2660ec2 | 143 | #endif // ifndef __UUID_H__ |