wanjun chen / Nucleo_BLE_API_IOTIO

IOTIO

Fork of Nucleo_BLE_API by ST Americas mbed Team

common/GapAdvertisingData.cpp@2:584d5bedac75, 2016-10-29 (annotated)

Committer:
16038618
Date:
Sat Oct 29 14:16:12 2016 +0000
Revision:
2:584d5bedac75
Parent:
0:289fd2dae405 
IOTIO

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sjallouli 0:289fd2dae405 1 /* mbed Microcontroller Library
sjallouli 0:289fd2dae405 2 * Copyright (c) 2006-2013 ARM Limited
sjallouli 0:289fd2dae405 3 *
sjallouli 0:289fd2dae405 4 * Licensed under the Apache License, Version 2.0 (the "License");
sjallouli 0:289fd2dae405 5 * you may not use this file except in compliance with the License.
sjallouli 0:289fd2dae405 6 * You may obtain a copy of the License at
sjallouli 0:289fd2dae405 7 *
sjallouli 0:289fd2dae405 8 * http://www.apache.org/licenses/LICENSE-2.0
sjallouli 0:289fd2dae405 9 *
sjallouli 0:289fd2dae405 10 * Unless required by applicable law or agreed to in writing, software
sjallouli 0:289fd2dae405 11 * distributed under the License is distributed on an "AS IS" BASIS,
sjallouli 0:289fd2dae405 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
sjallouli 0:289fd2dae405 13 * See the License for the specific language governing permissions and
sjallouli 0:289fd2dae405 14 * limitations under the License.
sjallouli 0:289fd2dae405 15 */
sjallouli 0:289fd2dae405 16
sjallouli 0:289fd2dae405 17 #include <stdio.h>
sjallouli 0:289fd2dae405 18 #include <string.h>
sjallouli 0:289fd2dae405 19
sjallouli 0:289fd2dae405 20 #include "GapAdvertisingData.h"
sjallouli 0:289fd2dae405 21
sjallouli 0:289fd2dae405 22 /**************************************************************************/
sjallouli 0:289fd2dae405 23 /*!
sjallouli 0:289fd2dae405 24 \brief Creates a new GapAdvertisingData instance
sjallouli 0:289fd2dae405 25
sjallouli 0:289fd2dae405 26 \par EXAMPLE
sjallouli 0:289fd2dae405 27
sjallouli 0:289fd2dae405 28 \code
sjallouli 0:289fd2dae405 29
sjallouli 0:289fd2dae405 30 \endcode
sjallouli 0:289fd2dae405 31 */
sjallouli 0:289fd2dae405 32 /**************************************************************************/
sjallouli 0:289fd2dae405 33 GapAdvertisingData::GapAdvertisingData(void) : _payload(), _payloadLen(0), _appearance(GENERIC_TAG) {
sjallouli 0:289fd2dae405 34 /* empty */
sjallouli 0:289fd2dae405 35 }
sjallouli 0:289fd2dae405 36
sjallouli 0:289fd2dae405 37 /**************************************************************************/
sjallouli 0:289fd2dae405 38 /*!
sjallouli 0:289fd2dae405 39 Destructor
sjallouli 0:289fd2dae405 40 */
sjallouli 0:289fd2dae405 41 /**************************************************************************/
sjallouli 0:289fd2dae405 42 GapAdvertisingData::~GapAdvertisingData(void)
sjallouli 0:289fd2dae405 43 {
sjallouli 0:289fd2dae405 44 }
sjallouli 0:289fd2dae405 45
sjallouli 0:289fd2dae405 46 /**************************************************************************/
sjallouli 0:289fd2dae405 47 /*!
sjallouli 0:289fd2dae405 48 \brief Adds advertising data based on the specified AD type (see
sjallouli 0:289fd2dae405 49 DataType)
sjallouli 0:289fd2dae405 50
sjallouli 0:289fd2dae405 51 \args[in] advDataType The Advertising 'DataType' to add
sjallouli 0:289fd2dae405 52 \args[in] payload Pointer to the payload contents
sjallouli 0:289fd2dae405 53 \args[in] len Size of the payload in bytes
sjallouli 0:289fd2dae405 54
sjallouli 0:289fd2dae405 55 \returns ble_error_t
sjallouli 0:289fd2dae405 56
sjallouli 0:289fd2dae405 57 \retval BLE_ERROR_NONE
sjallouli 0:289fd2dae405 58 Everything executed properly
sjallouli 0:289fd2dae405 59
sjallouli 0:289fd2dae405 60 \retval BLE_ERROR_BUFFER_OVERFLOW
sjallouli 0:289fd2dae405 61 The specified data would cause the advertising buffer
sjallouli 0:289fd2dae405 62 to overflow
sjallouli 0:289fd2dae405 63
sjallouli 0:289fd2dae405 64 \par EXAMPLE
sjallouli 0:289fd2dae405 65
sjallouli 0:289fd2dae405 66 \code
sjallouli 0:289fd2dae405 67
sjallouli 0:289fd2dae405 68 \endcode
sjallouli 0:289fd2dae405 69 */
sjallouli 0:289fd2dae405 70 /**************************************************************************/
sjallouli 0:289fd2dae405 71 ble_error_t GapAdvertisingData::addData(DataType advDataType, const uint8_t *payload, uint8_t len)
sjallouli 0:289fd2dae405 72 {
sjallouli 0:289fd2dae405 73 /* ToDo: Check if an AD type already exists and if the existing */
sjallouli 0:289fd2dae405 74 /* value is exclusive or not (flags, etc.) */
sjallouli 0:289fd2dae405 75
sjallouli 0:289fd2dae405 76 /* Make sure we don't exceed the 31 byte payload limit */
sjallouli 0:289fd2dae405 77 if (_payloadLen + len + 2 > GAP_ADVERTISING_DATA_MAX_PAYLOAD) {
sjallouli 0:289fd2dae405 78 return BLE_ERROR_BUFFER_OVERFLOW;
sjallouli 0:289fd2dae405 79 }
sjallouli 0:289fd2dae405 80
sjallouli 0:289fd2dae405 81 /* Field length */
sjallouli 0:289fd2dae405 82 memset(&_payload[_payloadLen], len + 1, 1);
sjallouli 0:289fd2dae405 83 _payloadLen++;
sjallouli 0:289fd2dae405 84
sjallouli 0:289fd2dae405 85 /* Field ID */
sjallouli 0:289fd2dae405 86 memset(&_payload[_payloadLen], (uint8_t)advDataType, 1);
sjallouli 0:289fd2dae405 87 _payloadLen++;
sjallouli 0:289fd2dae405 88
sjallouli 0:289fd2dae405 89 /* Payload */
sjallouli 0:289fd2dae405 90 memcpy(&_payload[_payloadLen], payload, len);
sjallouli 0:289fd2dae405 91 _payloadLen += len;
sjallouli 0:289fd2dae405 92
sjallouli 0:289fd2dae405 93 return BLE_ERROR_NONE;
sjallouli 0:289fd2dae405 94 }
sjallouli 0:289fd2dae405 95
sjallouli 0:289fd2dae405 96 /**************************************************************************/
sjallouli 0:289fd2dae405 97 /*!
sjallouli 0:289fd2dae405 98 \brief Helper function to add APPEARANCE data to the advertising
sjallouli 0:289fd2dae405 99 payload
sjallouli 0:289fd2dae405 100
sjallouli 0:289fd2dae405 101 \args[in] appearance The APPEARANCE value to add
sjallouli 0:289fd2dae405 102
sjallouli 0:289fd2dae405 103 \returns ble_error_t
sjallouli 0:289fd2dae405 104
sjallouli 0:289fd2dae405 105 \retval BLE_ERROR_NONE
sjallouli 0:289fd2dae405 106 Everything executed properly
sjallouli 0:289fd2dae405 107
sjallouli 0:289fd2dae405 108 \retval BLE_ERROR_BUFFER_OVERFLOW
sjallouli 0:289fd2dae405 109 The specified data would cause the advertising buffer
sjallouli 0:289fd2dae405 110 to overflow
sjallouli 0:289fd2dae405 111
sjallouli 0:289fd2dae405 112 \par EXAMPLE
sjallouli 0:289fd2dae405 113
sjallouli 0:289fd2dae405 114 \code
sjallouli 0:289fd2dae405 115
sjallouli 0:289fd2dae405 116 \endcode
sjallouli 0:289fd2dae405 117 */
sjallouli 0:289fd2dae405 118 /**************************************************************************/
sjallouli 0:289fd2dae405 119 ble_error_t GapAdvertisingData::addAppearance(Appearance appearance)
sjallouli 0:289fd2dae405 120 {
sjallouli 0:289fd2dae405 121 _appearance = appearance;
sjallouli 0:289fd2dae405 122 return addData(GapAdvertisingData::APPEARANCE, (uint8_t *)&appearance, 2);
sjallouli 0:289fd2dae405 123 }
sjallouli 0:289fd2dae405 124
sjallouli 0:289fd2dae405 125 /**************************************************************************/
sjallouli 0:289fd2dae405 126 /*!
sjallouli 0:289fd2dae405 127 \brief Helper function to add FLAGS data to the advertising
sjallouli 0:289fd2dae405 128 payload
sjallouli 0:289fd2dae405 129
sjallouli 0:289fd2dae405 130 \args[in] flag The FLAGS value to add
sjallouli 0:289fd2dae405 131
sjallouli 0:289fd2dae405 132 \par LE_LIMITED_DISCOVERABLE
sjallouli 0:289fd2dae405 133 The peripheral is discoverable for a limited period of
sjallouli 0:289fd2dae405 134 time
sjallouli 0:289fd2dae405 135
sjallouli 0:289fd2dae405 136 \par LE_GENERAL_DISCOVERABLE
sjallouli 0:289fd2dae405 137 The peripheral is permanently discoverable
sjallouli 0:289fd2dae405 138
sjallouli 0:289fd2dae405 139 \par BREDR_NOT_SUPPORTED
sjallouli 0:289fd2dae405 140 This peripheral is a Bluetooth Low Energy only device
sjallouli 0:289fd2dae405 141 (no EDR support)
sjallouli 0:289fd2dae405 142
sjallouli 0:289fd2dae405 143 \returns ble_error_t
sjallouli 0:289fd2dae405 144
sjallouli 0:289fd2dae405 145 \retval BLE_ERROR_NONE
sjallouli 0:289fd2dae405 146 Everything executed properly
sjallouli 0:289fd2dae405 147
sjallouli 0:289fd2dae405 148 \retval BLE_ERROR_BUFFER_OVERFLOW
sjallouli 0:289fd2dae405 149 The specified data would cause the advertising buffer
sjallouli 0:289fd2dae405 150 to overflow
sjallouli 0:289fd2dae405 151
sjallouli 0:289fd2dae405 152 \par EXAMPLE
sjallouli 0:289fd2dae405 153
sjallouli 0:289fd2dae405 154 \code
sjallouli 0:289fd2dae405 155
sjallouli 0:289fd2dae405 156 \endcode
sjallouli 0:289fd2dae405 157 */
sjallouli 0:289fd2dae405 158 /**************************************************************************/
sjallouli 0:289fd2dae405 159 ble_error_t GapAdvertisingData::addFlags(uint8_t flags)
sjallouli 0:289fd2dae405 160 {
sjallouli 0:289fd2dae405 161 return addData(GapAdvertisingData::FLAGS, &flags, 1);
sjallouli 0:289fd2dae405 162 }
sjallouli 0:289fd2dae405 163
sjallouli 0:289fd2dae405 164 /**************************************************************************/
sjallouli 0:289fd2dae405 165 /*!
sjallouli 0:289fd2dae405 166 \brief Helper function to add TX_POWER_LEVEL data to the
sjallouli 0:289fd2dae405 167 advertising payload
sjallouli 0:289fd2dae405 168
sjallouli 0:289fd2dae405 169 \args[in] flag The TX_POWER_LEVEL value to add
sjallouli 0:289fd2dae405 170
sjallouli 0:289fd2dae405 171 \returns ble_error_t
sjallouli 0:289fd2dae405 172
sjallouli 0:289fd2dae405 173 \retval BLE_ERROR_NONE
sjallouli 0:289fd2dae405 174 Everything executed properly
sjallouli 0:289fd2dae405 175
sjallouli 0:289fd2dae405 176 \retval BLE_ERROR_BUFFER_OVERFLOW
sjallouli 0:289fd2dae405 177 The specified data would cause the advertising buffer
sjallouli 0:289fd2dae405 178 to overflow
sjallouli 0:289fd2dae405 179
sjallouli 0:289fd2dae405 180 \par EXAMPLE
sjallouli 0:289fd2dae405 181
sjallouli 0:289fd2dae405 182 \code
sjallouli 0:289fd2dae405 183
sjallouli 0:289fd2dae405 184 \endcode
sjallouli 0:289fd2dae405 185 */
sjallouli 0:289fd2dae405 186 /**************************************************************************/
sjallouli 0:289fd2dae405 187 ble_error_t GapAdvertisingData::addTxPower(int8_t txPower)
sjallouli 0:289fd2dae405 188 {
sjallouli 0:289fd2dae405 189 /* ToDo: Basic error checking to make sure txPower is in range */
sjallouli 0:289fd2dae405 190 return addData(GapAdvertisingData::TX_POWER_LEVEL, (uint8_t *)&txPower, 1);
sjallouli 0:289fd2dae405 191 }
sjallouli 0:289fd2dae405 192
sjallouli 0:289fd2dae405 193 /**************************************************************************/
sjallouli 0:289fd2dae405 194 /*!
sjallouli 0:289fd2dae405 195 \brief Clears the payload and resets the payload length counter
sjallouli 0:289fd2dae405 196 */
sjallouli 0:289fd2dae405 197 /**************************************************************************/
sjallouli 0:289fd2dae405 198 void GapAdvertisingData::clear(void)
sjallouli 0:289fd2dae405 199 {
sjallouli 0:289fd2dae405 200 memset(&_payload, 0, GAP_ADVERTISING_DATA_MAX_PAYLOAD);
sjallouli 0:289fd2dae405 201 _payloadLen = 0;
sjallouli 0:289fd2dae405 202 }
sjallouli 0:289fd2dae405 203
sjallouli 0:289fd2dae405 204 /**************************************************************************/
sjallouli 0:289fd2dae405 205 /*!
sjallouli 0:289fd2dae405 206 \brief Returns a pointer to the the current payload
sjallouli 0:289fd2dae405 207
sjallouli 0:289fd2dae405 208 \returns A pointer to the payload
sjallouli 0:289fd2dae405 209 */
sjallouli 0:289fd2dae405 210 /**************************************************************************/
sjallouli 0:289fd2dae405 211 const uint8_t *GapAdvertisingData::getPayload(void) const
sjallouli 0:289fd2dae405 212 {
sjallouli 0:289fd2dae405 213 return (_payloadLen > 0) ? _payload : NULL;
sjallouli 0:289fd2dae405 214 }
sjallouli 0:289fd2dae405 215
sjallouli 0:289fd2dae405 216 /**************************************************************************/
sjallouli 0:289fd2dae405 217 /*!
sjallouli 0:289fd2dae405 218 \brief Returns the current payload length (0..31 bytes)
sjallouli 0:289fd2dae405 219
sjallouli 0:289fd2dae405 220 \returns The payload length in bytes
sjallouli 0:289fd2dae405 221 */
sjallouli 0:289fd2dae405 222 /**************************************************************************/
sjallouli 0:289fd2dae405 223 uint8_t GapAdvertisingData::getPayloadLen(void) const
sjallouli 0:289fd2dae405 224 {
sjallouli 0:289fd2dae405 225 return _payloadLen;
sjallouli 0:289fd2dae405 226 }
sjallouli 0:289fd2dae405 227
sjallouli 0:289fd2dae405 228 /**************************************************************************/
sjallouli 0:289fd2dae405 229 /*!
sjallouli 0:289fd2dae405 230 \brief Returns the 16-bit appearance value for this device
sjallouli 0:289fd2dae405 231
sjallouli 0:289fd2dae405 232 \returns The 16-bit appearance value
sjallouli 0:289fd2dae405 233 */
sjallouli 0:289fd2dae405 234 /**************************************************************************/
sjallouli 0:289fd2dae405 235 uint16_t GapAdvertisingData::getAppearance(void) const
sjallouli 0:289fd2dae405 236 {
sjallouli 0:289fd2dae405 237 return (uint16_t)_appearance;
sjallouli 0:289fd2dae405 238 }