vo dung / Mbed 2 deprecated eddystone_URL

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Dependencies:   mbed

Dependents:   ibeacon

Fork of BLE_WallbotBLE_Challenge by JKSoft

BLE_API/common/UUID.cpp@0:76dfa9657d9d, 2014-11-12 (annotated)

Committer:
jksoft
Date:
Wed Nov 12 02:40:34 2014 +0000
Revision:
0:76dfa9657d9d
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jksoft 0:76dfa9657d9d 1 /* mbed Microcontroller Library
jksoft 0:76dfa9657d9d 2 * Copyright (c) 2006-2013 ARM Limited
jksoft 0:76dfa9657d9d 3 *
jksoft 0:76dfa9657d9d 4 * Licensed under the Apache License, Version 2.0 (the "License");
jksoft 0:76dfa9657d9d 5 * you may not use this file except in compliance with the License.
jksoft 0:76dfa9657d9d 6 * You may obtain a copy of the License at
jksoft 0:76dfa9657d9d 7 *
jksoft 0:76dfa9657d9d 8 * http://www.apache.org/licenses/LICENSE-2.0
jksoft 0:76dfa9657d9d 9 *
jksoft 0:76dfa9657d9d 10 * Unless required by applicable law or agreed to in writing, software
jksoft 0:76dfa9657d9d 11 * distributed under the License is distributed on an "AS IS" BASIS,
jksoft 0:76dfa9657d9d 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
jksoft 0:76dfa9657d9d 13 * See the License for the specific language governing permissions and
jksoft 0:76dfa9657d9d 14 * limitations under the License.
jksoft 0:76dfa9657d9d 15 */
jksoft 0:76dfa9657d9d 16
jksoft 0:76dfa9657d9d 17
jksoft 0:76dfa9657d9d 18 #include <stdio.h>
jksoft 0:76dfa9657d9d 19 #include <string.h>
jksoft 0:76dfa9657d9d 20
jksoft 0:76dfa9657d9d 21 #include "UUID.h"
jksoft 0:76dfa9657d9d 22
jksoft 0:76dfa9657d9d 23 /**************************************************************************/
jksoft 0:76dfa9657d9d 24 /*!
jksoft 0:76dfa9657d9d 25 @brief Creates a new 128-bit UUID
jksoft 0:76dfa9657d9d 26
jksoft 0:76dfa9657d9d 27 @note The UUID is a unique 128-bit (16 byte) ID used to identify
jksoft 0:76dfa9657d9d 28 different service or characteristics on the BLE device.
jksoft 0:76dfa9657d9d 29
jksoft 0:76dfa9657d9d 30 @note When creating a UUID, the constructor will check if all bytes
jksoft 0:76dfa9657d9d 31 except bytes 2/3 are equal to 0. If only bytes 2/3 have a
jksoft 0:76dfa9657d9d 32 value, the UUID will be treated as a short/BLE UUID, and the
jksoft 0:76dfa9657d9d 33 .type field will be set to UUID::UUID_TYPE_SHORT. If any
jksoft 0:76dfa9657d9d 34 of the bytes outside byte 2/3 have a non-zero value, the UUID
jksoft 0:76dfa9657d9d 35 will be considered a 128-bit ID, and .type will be assigned
jksoft 0:76dfa9657d9d 36 as UUID::UUID_TYPE_LONG.
jksoft 0:76dfa9657d9d 37
jksoft 0:76dfa9657d9d 38 @param[in] uuid_base
jksoft 0:76dfa9657d9d 39 The 128-bit (16-byte) UUID value. For 128-bit values,
jksoft 0:76dfa9657d9d 40 assign all 16 bytes. For 16-bit values, assign the
jksoft 0:76dfa9657d9d 41 16-bits to byte 2 and 3, and leave the rest of the bytes
jksoft 0:76dfa9657d9d 42 as 0.
jksoft 0:76dfa9657d9d 43
jksoft 0:76dfa9657d9d 44 @section EXAMPLE
jksoft 0:76dfa9657d9d 45
jksoft 0:76dfa9657d9d 46 @code
jksoft 0:76dfa9657d9d 47
jksoft 0:76dfa9657d9d 48 // Create a short UUID (0x180F)
jksoft 0:76dfa9657d9d 49 uint8_t shortID[16] = { 0, 0, 0x0F, 0x18, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
jksoft 0:76dfa9657d9d 50 UUID ble_uuid = UUID(shortID);
jksoft 0:76dfa9657d9d 51 // ble_uuid.type = UUID_TYPE_SHORT
jksoft 0:76dfa9657d9d 52 // ble_uuid.value = 0x180F
jksoft 0:76dfa9657d9d 53
jksoft 0:76dfa9657d9d 54 // Creeate a long UUID
jksoft 0:76dfa9657d9d 55 uint8_t longID[16] = { 0x00, 0x11, 0x22, 0x33,
jksoft 0:76dfa9657d9d 56 0x44, 0x55, 0x66, 0x77,
jksoft 0:76dfa9657d9d 57 0x88, 0x99, 0xAA, 0xBB,
jksoft 0:76dfa9657d9d 58 0xCC, 0xDD, 0xEE, 0xFF };
jksoft 0:76dfa9657d9d 59 UUID custom_uuid = UUID(longID);
jksoft 0:76dfa9657d9d 60 // custom_uuid.type = UUID_TYPE_LONG
jksoft 0:76dfa9657d9d 61 // custom_uuid.value = 0x3322
jksoft 0:76dfa9657d9d 62 // custom_uuid.base = 00 11 22 33 44 55 66 77 88 99 AA BB CC DD EE FF
jksoft 0:76dfa9657d9d 63
jksoft 0:76dfa9657d9d 64 @endcode
jksoft 0:76dfa9657d9d 65 */
jksoft 0:76dfa9657d9d 66 /**************************************************************************/
jksoft 0:76dfa9657d9d 67 UUID::UUID(const LongUUIDBytes_t longUUID) : type(UUID_TYPE_SHORT), baseUUID(), shortUUID(0)
jksoft 0:76dfa9657d9d 68 {
jksoft 0:76dfa9657d9d 69 memcpy(baseUUID, longUUID, LENGTH_OF_LONG_UUID);
jksoft 0:76dfa9657d9d 70 shortUUID = (uint16_t)((longUUID[2] << 8) | (longUUID[3]));
jksoft 0:76dfa9657d9d 71
jksoft 0:76dfa9657d9d 72 /* Check if this is a short of a long UUID */
jksoft 0:76dfa9657d9d 73 unsigned index;
jksoft 0:76dfa9657d9d 74 for (index = 0; index < LENGTH_OF_LONG_UUID; index++) {
jksoft 0:76dfa9657d9d 75 if ((index == 2) || (index == 3)) {
jksoft 0:76dfa9657d9d 76 continue; /* we should not consider bytes 2 and 3 because that's
jksoft 0:76dfa9657d9d 77 * where the 16-bit relative UUID is placed. */
jksoft 0:76dfa9657d9d 78 }
jksoft 0:76dfa9657d9d 79
jksoft 0:76dfa9657d9d 80 if (baseUUID[index] != 0) {
jksoft 0:76dfa9657d9d 81 type = UUID_TYPE_LONG;
jksoft 0:76dfa9657d9d 82
jksoft 0:76dfa9657d9d 83 /* zero out the 16-bit part in the base; this will help equate long
jksoft 0:76dfa9657d9d 84 * UUIDs when they differ only in this 16-bit relative part.*/
jksoft 0:76dfa9657d9d 85 baseUUID[2] = 0;
jksoft 0:76dfa9657d9d 86 baseUUID[3] = 0;
jksoft 0:76dfa9657d9d 87
jksoft 0:76dfa9657d9d 88 return;
jksoft 0:76dfa9657d9d 89 }
jksoft 0:76dfa9657d9d 90 }
jksoft 0:76dfa9657d9d 91 }
jksoft 0:76dfa9657d9d 92
jksoft 0:76dfa9657d9d 93 /**************************************************************************/
jksoft 0:76dfa9657d9d 94 /*!
jksoft 0:76dfa9657d9d 95 @brief Creates a short (16-bit) UUID
jksoft 0:76dfa9657d9d 96
jksoft 0:76dfa9657d9d 97 @param[in] ble_uuid
jksoft 0:76dfa9657d9d 98 The 16-bit BLE UUID value.
jksoft 0:76dfa9657d9d 99 */
jksoft 0:76dfa9657d9d 100 /**************************************************************************/
jksoft 0:76dfa9657d9d 101 UUID::UUID(ShortUUIDBytes_t shortUUID) : type(UUID_TYPE_SHORT), baseUUID(), shortUUID(shortUUID)
jksoft 0:76dfa9657d9d 102 {
jksoft 0:76dfa9657d9d 103 /* empty */
jksoft 0:76dfa9657d9d 104 }
jksoft 0:76dfa9657d9d 105
jksoft 0:76dfa9657d9d 106 /**************************************************************************/
jksoft 0:76dfa9657d9d 107 /*!
jksoft 0:76dfa9657d9d 108 @brief UUID destructor
jksoft 0:76dfa9657d9d 109 */
jksoft 0:76dfa9657d9d 110 /**************************************************************************/
jksoft 0:76dfa9657d9d 111 UUID::~UUID(void)
jksoft 0:76dfa9657d9d 112 {
jksoft 0:76dfa9657d9d 113 }