Lancaster University / BLE_API

Lancaster University's fork of the mbed BLE API. Lives on github, https://github.com/lancaster-university/BLE_API

Dependents:   microbit-dal microbit-dal microbit-ble-open microbit-dal ... more

Fork of BLE_API by Bluetooth Low Energy

ble/GapAdvertisingData.h@1140:dd2f69fad8c6, 2016-04-06 (annotated)

Committer:
LancasterUniversity
Date:
Wed Apr 06 18:40:40 2016 +0100
Revision:
1140:dd2f69fad8c6
Parent:
1137:290d499dd0e8 
Synchronized with git rev bbc2dc58

Author: Joe Finney

microbit: Additional callback to indicate to applications when System

Attributes require initialisation from persistent storage.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rgrover1 710:b2e1a2660ec2 1 /* mbed Microcontroller Library
rgrover1 710:b2e1a2660ec2 2 * Copyright (c) 2006-2013 ARM Limited
rgrover1 710:b2e1a2660ec2 3 *
rgrover1 710:b2e1a2660ec2 4 * Licensed under the Apache License, Version 2.0 (the "License");
rgrover1 710:b2e1a2660ec2 5 * you may not use this file except in compliance with the License.
rgrover1 710:b2e1a2660ec2 6 * You may obtain a copy of the License at
rgrover1 710:b2e1a2660ec2 7 *
rgrover1 710:b2e1a2660ec2 8 * http://www.apache.org/licenses/LICENSE-2.0
rgrover1 710:b2e1a2660ec2 9 *
rgrover1 710:b2e1a2660ec2 10 * Unless required by applicable law or agreed to in writing, software
rgrover1 710:b2e1a2660ec2 11 * distributed under the License is distributed on an "AS IS" BASIS,
rgrover1 710:b2e1a2660ec2 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
rgrover1 710:b2e1a2660ec2 13 * See the License for the specific language governing permissions and
rgrover1 710:b2e1a2660ec2 14 * limitations under the License.
rgrover1 710:b2e1a2660ec2 15 */
rgrover1 710:b2e1a2660ec2 16
rgrover1 710:b2e1a2660ec2 17 #ifndef __GAP_ADVERTISING_DATA_H__
rgrover1 710:b2e1a2660ec2 18 #define __GAP_ADVERTISING_DATA_H__
rgrover1 710:b2e1a2660ec2 19
rgrover1 710:b2e1a2660ec2 20 #include <stdint.h>
rgrover1 710:b2e1a2660ec2 21 #include <string.h>
rgrover1 710:b2e1a2660ec2 22
rgrover1 710:b2e1a2660ec2 23 #include "blecommon.h"
rgrover1 710:b2e1a2660ec2 24
rgrover1 710:b2e1a2660ec2 25 #define GAP_ADVERTISING_DATA_MAX_PAYLOAD (31)
rgrover1 710:b2e1a2660ec2 26
rgrover1 710:b2e1a2660ec2 27 /**************************************************************************/
rgrover1 710:b2e1a2660ec2 28 /*!
rgrover1 710:b2e1a2660ec2 29 \brief
rgrover1 710:b2e1a2660ec2 30 This class provides several helper functions to generate properly
vcoubard 1048:efb29faf12fc 31 formatted GAP Advertising and Scan Response data payloads.
rgrover1 710:b2e1a2660ec2 32
rgrover1 710:b2e1a2660ec2 33 \note
vcoubard 1048:efb29faf12fc 34 See Bluetooth Specification 4.0 (Vol. 3), Part C, Sections 11 and 18
rgrover1 710:b2e1a2660ec2 35 for further information on Advertising and Scan Response data.
rgrover1 710:b2e1a2660ec2 36
rgrover1 710:b2e1a2660ec2 37 \par Advertising and Scan Response Payloads
rgrover1 710:b2e1a2660ec2 38 Advertising data and Scan Response data are organized around a set of
rgrover1 710:b2e1a2660ec2 39 data types called 'AD types' in Bluetooth 4.0 (see the Bluetooth Core
rgrover1 710:b2e1a2660ec2 40 Specification v4.0, Vol. 3, Part C, Sections 11 and 18).
rgrover1 710:b2e1a2660ec2 41
rgrover1 710:b2e1a2660ec2 42 \par
vcoubard 1048:efb29faf12fc 43 Each AD type has its own standardized assigned number, as defined
rgrover1 710:b2e1a2660ec2 44 by the Bluetooth SIG:
rgrover1 710:b2e1a2660ec2 45 https://www.bluetooth.org/en-us/specification/assigned-numbers/generic-access-profile
rgrover1 710:b2e1a2660ec2 46
rgrover1 710:b2e1a2660ec2 47 \par
vcoubard 1048:efb29faf12fc 48 For convenience, all appropriate AD types are encapsulated
vcoubard 1048:efb29faf12fc 49 in GapAdvertisingData::DataType.
rgrover1 710:b2e1a2660ec2 50
rgrover1 710:b2e1a2660ec2 51 \par
rgrover1 710:b2e1a2660ec2 52 Before the AD Types and their payload (if any) can be inserted into
rgrover1 710:b2e1a2660ec2 53 the Advertising or Scan Response frames, they need to be formatted as
rgrover1 710:b2e1a2660ec2 54 follows:
rgrover1 710:b2e1a2660ec2 55
vcoubard 1048:efb29faf12fc 56 \li \c Record length (1 byte).
vcoubard 1048:efb29faf12fc 57 \li \c AD Type (1 byte).
vcoubard 1048:efb29faf12fc 58 \li \c AD payload (optional; only present if record length > 1).
rgrover1 710:b2e1a2660ec2 59
rgrover1 710:b2e1a2660ec2 60 \par
rgrover1 710:b2e1a2660ec2 61 This class takes care of properly formatting the payload, performs
rgrover1 710:b2e1a2660ec2 62 some basic checks on the payload length, and tries to avoid common
rgrover1 710:b2e1a2660ec2 63 errors like adding an exclusive AD field twice in the Advertising
rgrover1 710:b2e1a2660ec2 64 or Scan Response payload.
rgrover1 710:b2e1a2660ec2 65
rgrover1 710:b2e1a2660ec2 66 \par EXAMPLE
rgrover1 710:b2e1a2660ec2 67
rgrover1 710:b2e1a2660ec2 68 \code
rgrover1 710:b2e1a2660ec2 69
rgrover1 710:b2e1a2660ec2 70 // ToDo
rgrover1 710:b2e1a2660ec2 71
rgrover1 710:b2e1a2660ec2 72 \endcode
rgrover1 710:b2e1a2660ec2 73 */
rgrover1 710:b2e1a2660ec2 74 /**************************************************************************/
rgrover1 710:b2e1a2660ec2 75 class GapAdvertisingData
rgrover1 710:b2e1a2660ec2 76 {
rgrover1 710:b2e1a2660ec2 77 public:
rgrover1 710:b2e1a2660ec2 78 /**********************************************************************/
rgrover1 710:b2e1a2660ec2 79 /*!
rgrover1 710:b2e1a2660ec2 80 \brief
rgrover1 710:b2e1a2660ec2 81 A list of Advertising Data types commonly used by peripherals.
rgrover1 710:b2e1a2660ec2 82 These AD types are used to describe the capabilities of the
vcoubard 1048:efb29faf12fc 83 peripheral, and are inserted inside the advertising or scan
rgrover1 710:b2e1a2660ec2 84 response payloads.
rgrover1 710:b2e1a2660ec2 85
rgrover1 710:b2e1a2660ec2 86 \par Source
rgrover1 710:b2e1a2660ec2 87 \li \c Bluetooth Core Specification 4.0 (Vol. 3), Part C, Section 11, 18
rgrover1 710:b2e1a2660ec2 88 \li \c https://www.bluetooth.org/en-us/specification/assigned-numbers/generic-access-profile
rgrover1 710:b2e1a2660ec2 89 */
rgrover1 710:b2e1a2660ec2 90 /**********************************************************************/
rgrover1 756:503c4bd89a3d 91 enum DataType_t {
vcoubard 1052:b55e1ad3e1b3 92 FLAGS = 0x01, /**< \ref *Flags */
vcoubard 1052:b55e1ad3e1b3 93 INCOMPLETE_LIST_16BIT_SERVICE_IDS = 0x02, /**< Incomplete list of 16-bit Service IDs */
vcoubard 1052:b55e1ad3e1b3 94 COMPLETE_LIST_16BIT_SERVICE_IDS = 0x03, /**< Complete list of 16-bit Service IDs */
vcoubard 1052:b55e1ad3e1b3 95 INCOMPLETE_LIST_32BIT_SERVICE_IDS = 0x04, /**< Incomplete list of 32-bit Service IDs (not relevant for Bluetooth 4.0) */
vcoubard 1052:b55e1ad3e1b3 96 COMPLETE_LIST_32BIT_SERVICE_IDS = 0x05, /**< Complete list of 32-bit Service IDs (not relevant for Bluetooth 4.0) */
vcoubard 1052:b55e1ad3e1b3 97 INCOMPLETE_LIST_128BIT_SERVICE_IDS = 0x06, /**< Incomplete list of 128-bit Service IDs */
vcoubard 1052:b55e1ad3e1b3 98 COMPLETE_LIST_128BIT_SERVICE_IDS = 0x07, /**< Complete list of 128-bit Service IDs */
vcoubard 1052:b55e1ad3e1b3 99 SHORTENED_LOCAL_NAME = 0x08, /**< Shortened Local Name */
vcoubard 1052:b55e1ad3e1b3 100 COMPLETE_LOCAL_NAME = 0x09, /**< Complete Local Name */
vcoubard 1052:b55e1ad3e1b3 101 TX_POWER_LEVEL = 0x0A, /**< TX Power Level (in dBm) */
vcoubard 1052:b55e1ad3e1b3 102 DEVICE_ID = 0x10, /**< Device ID */
vcoubard 1052:b55e1ad3e1b3 103 SLAVE_CONNECTION_INTERVAL_RANGE = 0x12, /**< Slave Connection Interval Range */
vcoubard 1052:b55e1ad3e1b3 104 LIST_128BIT_SOLICITATION_IDS = 0x15, /**< List of 128 bit service UUIDs the device is looking for */
vcoubard 1052:b55e1ad3e1b3 105 SERVICE_DATA = 0x16, /**< Service Data */
vcoubard 1052:b55e1ad3e1b3 106 APPEARANCE = 0x19, /**< \ref Appearance */
vcoubard 1052:b55e1ad3e1b3 107 ADVERTISING_INTERVAL = 0x1A, /**< Advertising Interval */
vcoubard 1052:b55e1ad3e1b3 108 MANUFACTURER_SPECIFIC_DATA = 0xFF /**< Manufacturer Specific Data */
rgrover1 710:b2e1a2660ec2 109 };
rgrover1 756:503c4bd89a3d 110 typedef enum DataType_t DataType; /* Deprecated type alias. This may be dropped in a future release. */
rgrover1 710:b2e1a2660ec2 111
rgrover1 710:b2e1a2660ec2 112 /**********************************************************************/
rgrover1 710:b2e1a2660ec2 113 /*!
rgrover1 710:b2e1a2660ec2 114 \brief
vcoubard 1048:efb29faf12fc 115 A list of values for the FLAGS AD Type.
rgrover1 710:b2e1a2660ec2 116
rgrover1 710:b2e1a2660ec2 117 \note
rgrover1 710:b2e1a2660ec2 118 You can use more than one value in the FLAGS AD Type (ex.
rgrover1 710:b2e1a2660ec2 119 LE_GENERAL_DISCOVERABLE and BREDR_NOT_SUPPORTED).
rgrover1 710:b2e1a2660ec2 120
rgrover1 710:b2e1a2660ec2 121 \par Source
rgrover1 710:b2e1a2660ec2 122 \li \c Bluetooth Core Specification 4.0 (Vol. 3), Part C, Section 18.1
rgrover1 710:b2e1a2660ec2 123 */
rgrover1 710:b2e1a2660ec2 124 /**********************************************************************/
rgrover1 756:503c4bd89a3d 125 enum Flags_t {
vcoubard 1048:efb29faf12fc 126 LE_LIMITED_DISCOVERABLE = 0x01, /**< *Peripheral device is discoverable for a limited period of time. */
vcoubard 1048:efb29faf12fc 127 LE_GENERAL_DISCOVERABLE = 0x02, /**< Peripheral device is discoverable at any moment. */
vcoubard 1048:efb29faf12fc 128 BREDR_NOT_SUPPORTED = 0x04, /**< Peripheral device is LE only. */
vcoubard 1048:efb29faf12fc 129 SIMULTANEOUS_LE_BREDR_C = 0x08, /**< Not relevant - central mode only. */
vcoubard 1048:efb29faf12fc 130 SIMULTANEOUS_LE_BREDR_H = 0x10 /**< Not relevant - central mode only. */
rgrover1 710:b2e1a2660ec2 131 };
rgrover1 756:503c4bd89a3d 132 typedef enum Flags_t Flags; /* Deprecated type alias. This may be dropped in a future release. */
rgrover1 710:b2e1a2660ec2 133
rgrover1 710:b2e1a2660ec2 134 /**********************************************************************/
rgrover1 710:b2e1a2660ec2 135 /*!
rgrover1 710:b2e1a2660ec2 136 \brief
rgrover1 710:b2e1a2660ec2 137 A list of values for the APPEARANCE AD Type, which describes the
vcoubard 1048:efb29faf12fc 138 physical shape or appearance of the device.
rgrover1 710:b2e1a2660ec2 139
rgrover1 710:b2e1a2660ec2 140 \par Source
rgrover1 710:b2e1a2660ec2 141 \li \c Bluetooth Core Specification Supplement, Part A, Section 1.12
rgrover1 710:b2e1a2660ec2 142 \li \c Bluetooth Core Specification 4.0 (Vol. 3), Part C, Section 12.2
rgrover1 710:b2e1a2660ec2 143 \li \c https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.gap.appearance.xml
rgrover1 710:b2e1a2660ec2 144 */
rgrover1 710:b2e1a2660ec2 145 /**********************************************************************/
rgrover1 756:503c4bd89a3d 146 enum Appearance_t {
vcoubard 1048:efb29faf12fc 147 UNKNOWN = 0, /**< Unknown or unspecified appearance type. */
vcoubard 1048:efb29faf12fc 148 GENERIC_PHONE = 64, /**< Generic Phone. */
vcoubard 1048:efb29faf12fc 149 GENERIC_COMPUTER = 128, /**< Generic Computer. */
vcoubard 1048:efb29faf12fc 150 GENERIC_WATCH = 192, /**< Generic Watch. */
vcoubard 1048:efb29faf12fc 151 WATCH_SPORTS_WATCH = 193, /**< Sports Watch. */
vcoubard 1048:efb29faf12fc 152 GENERIC_CLOCK = 256, /**< Generic Clock. */
vcoubard 1048:efb29faf12fc 153 GENERIC_DISPLAY = 320, /**< Generic Display. */
vcoubard 1048:efb29faf12fc 154 GENERIC_REMOTE_CONTROL = 384, /**< Generic Remote Control. */
vcoubard 1048:efb29faf12fc 155 GENERIC_EYE_GLASSES = 448, /**< Generic Eye Glasses. */
vcoubard 1048:efb29faf12fc 156 GENERIC_TAG = 512, /**< Generic Tag. */
vcoubard 1048:efb29faf12fc 157 GENERIC_KEYRING = 576, /**< Generic Keyring. */
vcoubard 1048:efb29faf12fc 158 GENERIC_MEDIA_PLAYER = 640, /**< Generic Media Player. */
vcoubard 1048:efb29faf12fc 159 GENERIC_BARCODE_SCANNER = 704, /**< Generic Barcode Scanner. */
vcoubard 1048:efb29faf12fc 160 GENERIC_THERMOMETER = 768, /**< Generic Thermometer. */
vcoubard 1048:efb29faf12fc 161 THERMOMETER_EAR = 769, /**< Ear Thermometer. */
vcoubard 1048:efb29faf12fc 162 GENERIC_HEART_RATE_SENSOR = 832, /**< Generic Heart Rate Sensor. */
vcoubard 1048:efb29faf12fc 163 HEART_RATE_SENSOR_HEART_RATE_BELT = 833, /**< Belt Heart Rate Sensor. */
vcoubard 1048:efb29faf12fc 164 GENERIC_BLOOD_PRESSURE = 896, /**< Generic Blood Pressure. */
vcoubard 1048:efb29faf12fc 165 BLOOD_PRESSURE_ARM = 897, /**< Arm Blood Pressure. */
vcoubard 1048:efb29faf12fc 166 BLOOD_PRESSURE_WRIST = 898, /**< Wrist Blood Pressure. */
vcoubard 1048:efb29faf12fc 167 HUMAN_INTERFACE_DEVICE_HID = 960, /**< Human Interface Device (HID). */
vcoubard 1048:efb29faf12fc 168 KEYBOARD = 961, /**< Keyboard. */
vcoubard 1048:efb29faf12fc 169 MOUSE = 962, /**< Mouse. */
vcoubard 1048:efb29faf12fc 170 JOYSTICK = 963, /**< Joystick. */
vcoubard 1048:efb29faf12fc 171 GAMEPAD = 964, /**< Gamepad. */
vcoubard 1048:efb29faf12fc 172 DIGITIZER_TABLET = 965, /**< Digitizer Tablet. */
vcoubard 1048:efb29faf12fc 173 CARD_READER = 966, /**< Card Reader. */
vcoubard 1048:efb29faf12fc 174 DIGITAL_PEN = 967, /**< Digital Pen. */
vcoubard 1048:efb29faf12fc 175 BARCODE_SCANNER = 968, /**< Barcode Scanner. */
vcoubard 1048:efb29faf12fc 176 GENERIC_GLUCOSE_METER = 1024, /**< Generic Glucose Meter. */
vcoubard 1048:efb29faf12fc 177 GENERIC_RUNNING_WALKING_SENSOR = 1088, /**< Generic Running/Walking Sensor. */
vcoubard 1048:efb29faf12fc 178 RUNNING_WALKING_SENSOR_IN_SHOE = 1089, /**< In Shoe Running/Walking Sensor. */
vcoubard 1048:efb29faf12fc 179 RUNNING_WALKING_SENSOR_ON_SHOE = 1090, /**< On Shoe Running/Walking Sensor. */
vcoubard 1048:efb29faf12fc 180 RUNNING_WALKING_SENSOR_ON_HIP = 1091, /**< On Hip Running/Walking Sensor. */
vcoubard 1048:efb29faf12fc 181 GENERIC_CYCLING = 1152, /**< Generic Cycling. */
vcoubard 1048:efb29faf12fc 182 CYCLING_CYCLING_COMPUTER = 1153, /**< Cycling Computer. */
vcoubard 1048:efb29faf12fc 183 CYCLING_SPEED_SENSOR = 1154, /**< Cycling Speed Sensor. */
vcoubard 1048:efb29faf12fc 184 CYCLING_CADENCE_SENSOR = 1155, /**< Cycling Cadence Sensor. */
vcoubard 1048:efb29faf12fc 185 CYCLING_POWER_SENSOR = 1156, /**< Cycling Power Sensor. */
vcoubard 1048:efb29faf12fc 186 CYCLING_SPEED_AND_CADENCE_SENSOR = 1157, /**< Cycling Speed and Cadence Sensor. */
vcoubard 1048:efb29faf12fc 187 PULSE_OXIMETER_GENERIC = 3136, /**< Generic Pulse Oximeter. */
vcoubard 1048:efb29faf12fc 188 PULSE_OXIMETER_FINGERTIP = 3137, /**< Fingertip Pulse Oximeter. */
vcoubard 1048:efb29faf12fc 189 PULSE_OXIMETER_WRIST_WORN = 3138, /**< Wrist Worn Pulse Oximeter. */
LancasterUniversity 1137:290d499dd0e8 190 GENERIC_WEIGHT_SCALE = 3200, /**< Generic Weight Scale. */
vcoubard 1048:efb29faf12fc 191 OUTDOOR_GENERIC = 5184, /**< Generic Outdoor. */
vcoubard 1048:efb29faf12fc 192 OUTDOOR_LOCATION_DISPLAY_DEVICE = 5185, /**< Outdoor Location Display Device. */
vcoubard 1048:efb29faf12fc 193 OUTDOOR_LOCATION_AND_NAVIGATION_DISPLAY_DEVICE = 5186, /**< Outdoor Location and Navigation Display Device. */
vcoubard 1048:efb29faf12fc 194 OUTDOOR_LOCATION_POD = 5187, /**< Outdoor Location Pod. */
vcoubard 1048:efb29faf12fc 195 OUTDOOR_LOCATION_AND_NAVIGATION_POD = 5188 /**< Outdoor Location and Navigation Pod. */
rgrover1 710:b2e1a2660ec2 196 };
rgrover1 756:503c4bd89a3d 197 typedef enum Appearance_t Appearance; /* Deprecated type alias. This may be dropped in a future release. */
rgrover1 710:b2e1a2660ec2 198
rgrover1 710:b2e1a2660ec2 199 GapAdvertisingData(void) : _payload(), _payloadLen(0), _appearance(GENERIC_TAG) {
rgrover1 710:b2e1a2660ec2 200 /* empty */
rgrover1 710:b2e1a2660ec2 201 }
rgrover1 710:b2e1a2660ec2 202
rgrover1 710:b2e1a2660ec2 203 /**
vcoubard 1048:efb29faf12fc 204 * Adds advertising data based on the specified AD type (see DataType).
LancasterUniversity 1137:290d499dd0e8 205 * If the supplied AD type is already present in the advertising
LancasterUniversity 1137:290d499dd0e8 206 * payload, then the value is updated.
rgrover1 763:36c3e2b1f1ae 207 *
rgrover1 765:4cd91998cd48 208 * @param[in] advDataType The Advertising 'DataType' to add.
rgrover1 765:4cd91998cd48 209 * @param[in] payload Pointer to the payload contents.
rgrover1 765:4cd91998cd48 210 * @param[in] len Size of the payload in bytes.
rgrover1 763:36c3e2b1f1ae 211 *
LancasterUniversity 1137:290d499dd0e8 212 * @return BLE_ERROR_BUFFER_OVERFLOW if the new value causes the
LancasterUniversity 1137:290d499dd0e8 213 * advertising buffer to overflow. BLE_ERROR_NONE is returned
LancasterUniversity 1137:290d499dd0e8 214 * on success.
LancasterUniversity 1137:290d499dd0e8 215 *
LancasterUniversity 1137:290d499dd0e8 216 * @note When the specified AD type is INCOMPLETE_LIST_16BIT_SERVICE_IDS,
LancasterUniversity 1137:290d499dd0e8 217 * COMPLETE_LIST_16BIT_SERVICE_IDS, INCOMPLETE_LIST_32BIT_SERVICE_IDS,
LancasterUniversity 1137:290d499dd0e8 218 * COMPLETE_LIST_32BIT_SERVICE_IDS, INCOMPLETE_LIST_128BIT_SERVICE_IDS,
LancasterUniversity 1137:290d499dd0e8 219 * COMPLETE_LIST_128BIT_SERVICE_IDS or LIST_128BIT_SOLICITATION_IDS the
LancasterUniversity 1137:290d499dd0e8 220 * supplied value is appended to the values previously added to the
LancasterUniversity 1137:290d499dd0e8 221 * payload.
LancasterUniversity 1137:290d499dd0e8 222 */
LancasterUniversity 1137:290d499dd0e8 223 ble_error_t addData(DataType_t advDataType, const uint8_t *payload, uint8_t len)
LancasterUniversity 1137:290d499dd0e8 224 {
LancasterUniversity 1137:290d499dd0e8 225 // find field
LancasterUniversity 1137:290d499dd0e8 226 uint8_t* field = findField(advDataType);
LancasterUniversity 1137:290d499dd0e8 227
LancasterUniversity 1137:290d499dd0e8 228 if (field) {
LancasterUniversity 1137:290d499dd0e8 229 // Field type already exist, either add to field or replace
LancasterUniversity 1137:290d499dd0e8 230 return addField(advDataType, payload, len, field);
LancasterUniversity 1137:290d499dd0e8 231 } else {
LancasterUniversity 1137:290d499dd0e8 232 // field doesn't exists, insert new
LancasterUniversity 1137:290d499dd0e8 233 return appendField(advDataType, payload, len);
LancasterUniversity 1137:290d499dd0e8 234 }
LancasterUniversity 1137:290d499dd0e8 235 }
LancasterUniversity 1137:290d499dd0e8 236
LancasterUniversity 1137:290d499dd0e8 237 /**
LancasterUniversity 1137:290d499dd0e8 238 * Update a particular ADV field in the advertising payload (based on
LancasterUniversity 1137:290d499dd0e8 239 * matching type).
LancasterUniversity 1137:290d499dd0e8 240 *
LancasterUniversity 1137:290d499dd0e8 241 * @param[in] advDataType The Advertising 'DataType' to add.
LancasterUniversity 1137:290d499dd0e8 242 * @param[in] payload Pointer to the payload contents.
LancasterUniversity 1137:290d499dd0e8 243 * @param[in] len Size of the payload in bytes.
LancasterUniversity 1137:290d499dd0e8 244 *
LancasterUniversity 1137:290d499dd0e8 245 * @return BLE_ERROR_UNSPECIFIED if the specified field is not found,
LancasterUniversity 1137:290d499dd0e8 246 * BLE_ERROR_BUFFER_OVERFLOW if the new value causes the
LancasterUniversity 1137:290d499dd0e8 247 * advertising buffer to overflow. BLE_ERROR_NONE is returned
LancasterUniversity 1137:290d499dd0e8 248 * on success.
rgrover1 763:36c3e2b1f1ae 249 */
rgrover1 765:4cd91998cd48 250 ble_error_t updateData(DataType_t advDataType, const uint8_t *payload, uint8_t len)
rgrover1 765:4cd91998cd48 251 {
LancasterUniversity 1137:290d499dd0e8 252 // find field
LancasterUniversity 1137:290d499dd0e8 253 uint8_t* field = findField(advDataType);
rgrover1 765:4cd91998cd48 254
LancasterUniversity 1137:290d499dd0e8 255 if (field) {
LancasterUniversity 1137:290d499dd0e8 256 // Field type already exist, replace field contents
LancasterUniversity 1137:290d499dd0e8 257 return updateField(advDataType, payload, len, field);
LancasterUniversity 1137:290d499dd0e8 258 } else {
LancasterUniversity 1137:290d499dd0e8 259 // field doesn't exists, return an error
LancasterUniversity 1137:290d499dd0e8 260 return BLE_ERROR_UNSPECIFIED;
rgrover1 763:36c3e2b1f1ae 261 }
rgrover1 763:36c3e2b1f1ae 262 }
rgrover1 763:36c3e2b1f1ae 263
rgrover1 763:36c3e2b1f1ae 264 /**
vcoubard 1048:efb29faf12fc 265 * Helper function to add APPEARANCE data to the advertising payload.
rgrover1 710:b2e1a2660ec2 266 *
rgrover1 710:b2e1a2660ec2 267 * @param appearance
vcoubard 1048:efb29faf12fc 268 * The APPEARANCE value to add.
rgrover1 710:b2e1a2660ec2 269 *
rgrover1 710:b2e1a2660ec2 270 * @return BLE_ERROR_BUFFER_OVERFLOW if the specified data would cause the
rgrover1 710:b2e1a2660ec2 271 * advertising buffer to overflow, else BLE_ERROR_NONE.
rgrover1 710:b2e1a2660ec2 272 */
rgrover1 710:b2e1a2660ec2 273 ble_error_t addAppearance(Appearance appearance = GENERIC_TAG) {
rgrover1 710:b2e1a2660ec2 274 _appearance = appearance;
rgrover1 710:b2e1a2660ec2 275 return addData(GapAdvertisingData::APPEARANCE, (uint8_t *)&appearance, 2);
rgrover1 710:b2e1a2660ec2 276 }
rgrover1 710:b2e1a2660ec2 277
rgrover1 710:b2e1a2660ec2 278 /**
rgrover1 710:b2e1a2660ec2 279 * Helper function to add FLAGS data to the advertising payload.
rgrover1 710:b2e1a2660ec2 280 * @param flags
rgrover1 710:b2e1a2660ec2 281 * LE_LIMITED_DISCOVERABLE
rgrover1 710:b2e1a2660ec2 282 * The peripheral is discoverable for a limited period of time.
rgrover1 710:b2e1a2660ec2 283 * LE_GENERAL_DISCOVERABLE
rgrover1 710:b2e1a2660ec2 284 * The peripheral is permanently discoverable.
rgrover1 710:b2e1a2660ec2 285 * BREDR_NOT_SUPPORTED
rgrover1 710:b2e1a2660ec2 286 * This peripheral is a Bluetooth Low Energy only device (no EDR support).
rgrover1 710:b2e1a2660ec2 287 *
rgrover1 710:b2e1a2660ec2 288 * @return BLE_ERROR_BUFFER_OVERFLOW if the specified data would cause the
rgrover1 710:b2e1a2660ec2 289 * advertising buffer to overflow, else BLE_ERROR_NONE.
rgrover1 710:b2e1a2660ec2 290 */
rgrover1 710:b2e1a2660ec2 291 ble_error_t addFlags(uint8_t flags = LE_GENERAL_DISCOVERABLE) {
rgrover1 710:b2e1a2660ec2 292 return addData(GapAdvertisingData::FLAGS, &flags, 1);
rgrover1 710:b2e1a2660ec2 293 }
rgrover1 710:b2e1a2660ec2 294
rgrover1 710:b2e1a2660ec2 295 /**
vcoubard 1048:efb29faf12fc 296 * Helper function to add TX_POWER_LEVEL data to the advertising payload.
rgrover1 710:b2e1a2660ec2 297 *
rgrover1 710:b2e1a2660ec2 298 * @return BLE_ERROR_BUFFER_OVERFLOW if the specified data would cause the
rgrover1 710:b2e1a2660ec2 299 * advertising buffer to overflow, else BLE_ERROR_NONE.
rgrover1 710:b2e1a2660ec2 300 */
rgrover1 710:b2e1a2660ec2 301 ble_error_t addTxPower(int8_t txPower) {
vcoubard 1048:efb29faf12fc 302 /* To Do: Basic error checking to make sure txPower is in range. */
rgrover1 710:b2e1a2660ec2 303 return addData(GapAdvertisingData::TX_POWER_LEVEL, (uint8_t *)&txPower, 1);
rgrover1 710:b2e1a2660ec2 304 }
rgrover1 710:b2e1a2660ec2 305
rgrover1 710:b2e1a2660ec2 306 /**
vcoubard 1048:efb29faf12fc 307 * Clears the payload and resets the payload length counter.
rgrover1 710:b2e1a2660ec2 308 */
rgrover1 710:b2e1a2660ec2 309 void clear(void) {
rgrover1 710:b2e1a2660ec2 310 memset(&_payload, 0, GAP_ADVERTISING_DATA_MAX_PAYLOAD);
rgrover1 710:b2e1a2660ec2 311 _payloadLen = 0;
rgrover1 710:b2e1a2660ec2 312 }
rgrover1 710:b2e1a2660ec2 313
rgrover1 710:b2e1a2660ec2 314 /**
vcoubard 1048:efb29faf12fc 315 * Returns a pointer to the current payload.
rgrover1 710:b2e1a2660ec2 316 */
rgrover1 710:b2e1a2660ec2 317 const uint8_t *getPayload(void) const {
rgrover1 769:2d236d9afa9e 318 return _payload;
rgrover1 710:b2e1a2660ec2 319 }
rgrover1 710:b2e1a2660ec2 320
rgrover1 710:b2e1a2660ec2 321 /**
vcoubard 1048:efb29faf12fc 322 * Returns the current payload length (0..31 bytes).
rgrover1 710:b2e1a2660ec2 323 */
rgrover1 710:b2e1a2660ec2 324 uint8_t getPayloadLen(void) const {
rgrover1 710:b2e1a2660ec2 325 return _payloadLen;
rgrover1 710:b2e1a2660ec2 326 }
rgrover1 710:b2e1a2660ec2 327
rgrover1 710:b2e1a2660ec2 328 /**
vcoubard 1048:efb29faf12fc 329 * Returns the 16-bit appearance value for this device.
rgrover1 710:b2e1a2660ec2 330 */
rgrover1 710:b2e1a2660ec2 331 uint16_t getAppearance(void) const {
rgrover1 710:b2e1a2660ec2 332 return (uint16_t)_appearance;
rgrover1 710:b2e1a2660ec2 333 }
rgrover1 710:b2e1a2660ec2 334
vcoubard 1052:b55e1ad3e1b3 335 /**
vcoubard 1052:b55e1ad3e1b3 336 * Search advertisement data for field.
vcoubard 1052:b55e1ad3e1b3 337 * Returns pointer to the first element in the field if found, NULL otherwise.
vcoubard 1052:b55e1ad3e1b3 338 * Where the first element is the length of the field.
vcoubard 1052:b55e1ad3e1b3 339 */
vcoubard 1052:b55e1ad3e1b3 340 const uint8_t* findField(DataType_t type) const {
vcoubard 1052:b55e1ad3e1b3 341 return findField(type);
vcoubard 1052:b55e1ad3e1b3 342 }
vcoubard 1052:b55e1ad3e1b3 343
rgrover1 710:b2e1a2660ec2 344 private:
vcoubard 1052:b55e1ad3e1b3 345 /**
vcoubard 1052:b55e1ad3e1b3 346 * Append advertising data based on the specified AD type (see DataType)
vcoubard 1052:b55e1ad3e1b3 347 */
vcoubard 1052:b55e1ad3e1b3 348 ble_error_t appendField(DataType advDataType, const uint8_t *payload, uint8_t len)
vcoubard 1052:b55e1ad3e1b3 349 {
vcoubard 1052:b55e1ad3e1b3 350 /* Make sure we don't exceed the 31 byte payload limit */
vcoubard 1052:b55e1ad3e1b3 351 if (_payloadLen + len + 2 > GAP_ADVERTISING_DATA_MAX_PAYLOAD) {
vcoubard 1052:b55e1ad3e1b3 352 return BLE_ERROR_BUFFER_OVERFLOW;
vcoubard 1052:b55e1ad3e1b3 353 }
vcoubard 1052:b55e1ad3e1b3 354
vcoubard 1052:b55e1ad3e1b3 355 /* Field length. */
vcoubard 1052:b55e1ad3e1b3 356 memset(&_payload[_payloadLen], len + 1, 1);
vcoubard 1052:b55e1ad3e1b3 357 _payloadLen++;
vcoubard 1052:b55e1ad3e1b3 358
vcoubard 1052:b55e1ad3e1b3 359 /* Field ID. */
vcoubard 1052:b55e1ad3e1b3 360 memset(&_payload[_payloadLen], (uint8_t)advDataType, 1);
vcoubard 1052:b55e1ad3e1b3 361 _payloadLen++;
vcoubard 1052:b55e1ad3e1b3 362
vcoubard 1052:b55e1ad3e1b3 363 /* Payload. */
vcoubard 1052:b55e1ad3e1b3 364 memcpy(&_payload[_payloadLen], payload, len);
vcoubard 1052:b55e1ad3e1b3 365 _payloadLen += len;
vcoubard 1052:b55e1ad3e1b3 366
vcoubard 1052:b55e1ad3e1b3 367 return BLE_ERROR_NONE;
vcoubard 1052:b55e1ad3e1b3 368 }
vcoubard 1052:b55e1ad3e1b3 369
vcoubard 1052:b55e1ad3e1b3 370 /**
vcoubard 1052:b55e1ad3e1b3 371 * Search advertisement data for field.
vcoubard 1052:b55e1ad3e1b3 372 * Returns pointer to the first element in the field if found, NULL otherwise.
vcoubard 1052:b55e1ad3e1b3 373 * Where the first element is the length of the field.
vcoubard 1052:b55e1ad3e1b3 374 */
vcoubard 1052:b55e1ad3e1b3 375 uint8_t* findField(DataType_t type) {
vcoubard 1052:b55e1ad3e1b3 376 // scan through advertisement data
vcoubard 1052:b55e1ad3e1b3 377 for (uint8_t idx = 0; idx < _payloadLen; ) {
vcoubard 1052:b55e1ad3e1b3 378 uint8_t fieldType = _payload[idx + 1];
vcoubard 1052:b55e1ad3e1b3 379
vcoubard 1052:b55e1ad3e1b3 380 if (fieldType == type) {
vcoubard 1052:b55e1ad3e1b3 381 return &_payload[idx];
vcoubard 1052:b55e1ad3e1b3 382 }
vcoubard 1052:b55e1ad3e1b3 383
vcoubard 1052:b55e1ad3e1b3 384 // advance to next field
vcoubard 1052:b55e1ad3e1b3 385 idx += _payload[idx] + 1;
vcoubard 1052:b55e1ad3e1b3 386 }
vcoubard 1052:b55e1ad3e1b3 387
vcoubard 1052:b55e1ad3e1b3 388 // field not found
vcoubard 1052:b55e1ad3e1b3 389 return NULL;
vcoubard 1052:b55e1ad3e1b3 390 }
vcoubard 1052:b55e1ad3e1b3 391
LancasterUniversity 1137:290d499dd0e8 392 /**
LancasterUniversity 1137:290d499dd0e8 393 * Given the a pointer to a field in the advertising payload it replaces
LancasterUniversity 1137:290d499dd0e8 394 * the existing data in the field with the supplied data.
LancasterUniversity 1137:290d499dd0e8 395 *
LancasterUniversity 1137:290d499dd0e8 396 * When the specified AD type is INCOMPLETE_LIST_16BIT_SERVICE_IDS,
LancasterUniversity 1137:290d499dd0e8 397 * COMPLETE_LIST_16BIT_SERVICE_IDS, INCOMPLETE_LIST_32BIT_SERVICE_IDS,
LancasterUniversity 1137:290d499dd0e8 398 * COMPLETE_LIST_32BIT_SERVICE_IDS, INCOMPLETE_LIST_128BIT_SERVICE_IDS,
LancasterUniversity 1137:290d499dd0e8 399 * COMPLETE_LIST_128BIT_SERVICE_IDS or LIST_128BIT_SOLICITATION_IDS the
LancasterUniversity 1137:290d499dd0e8 400 * supplied value is appended to the values previously added to the
LancasterUniversity 1137:290d499dd0e8 401 * payload.
LancasterUniversity 1137:290d499dd0e8 402 *
LancasterUniversity 1137:290d499dd0e8 403 * Returns BLE_ERROR_NONE on success.
LancasterUniversity 1137:290d499dd0e8 404 */
LancasterUniversity 1137:290d499dd0e8 405 ble_error_t addField(DataType_t advDataType, const uint8_t *payload, uint8_t len, uint8_t* field)
LancasterUniversity 1137:290d499dd0e8 406 {
LancasterUniversity 1137:290d499dd0e8 407 ble_error_t result = BLE_ERROR_BUFFER_OVERFLOW;
LancasterUniversity 1137:290d499dd0e8 408
LancasterUniversity 1137:290d499dd0e8 409 switch(advDataType) {
LancasterUniversity 1137:290d499dd0e8 410 // These fields will have the new data appended if there is sufficient space
LancasterUniversity 1137:290d499dd0e8 411 case INCOMPLETE_LIST_16BIT_SERVICE_IDS:
LancasterUniversity 1137:290d499dd0e8 412 case COMPLETE_LIST_16BIT_SERVICE_IDS:
LancasterUniversity 1137:290d499dd0e8 413 case INCOMPLETE_LIST_32BIT_SERVICE_IDS:
LancasterUniversity 1137:290d499dd0e8 414 case COMPLETE_LIST_32BIT_SERVICE_IDS:
LancasterUniversity 1137:290d499dd0e8 415 case INCOMPLETE_LIST_128BIT_SERVICE_IDS:
LancasterUniversity 1137:290d499dd0e8 416 case COMPLETE_LIST_128BIT_SERVICE_IDS:
LancasterUniversity 1137:290d499dd0e8 417 case LIST_128BIT_SOLICITATION_IDS: {
LancasterUniversity 1137:290d499dd0e8 418 // check if data fits
LancasterUniversity 1137:290d499dd0e8 419 if ((_payloadLen + len) <= GAP_ADVERTISING_DATA_MAX_PAYLOAD) {
LancasterUniversity 1137:290d499dd0e8 420 // make room for new field by moving the remainder of the
LancasterUniversity 1137:290d499dd0e8 421 // advertisement payload "to the right" starting after the
LancasterUniversity 1137:290d499dd0e8 422 // TYPE field.
LancasterUniversity 1137:290d499dd0e8 423 uint8_t* end = &_payload[_payloadLen];
LancasterUniversity 1137:290d499dd0e8 424
LancasterUniversity 1137:290d499dd0e8 425 while (&field[1] < end) {
LancasterUniversity 1137:290d499dd0e8 426 end[len] = *end;
LancasterUniversity 1137:290d499dd0e8 427 end--;
LancasterUniversity 1137:290d499dd0e8 428 }
LancasterUniversity 1137:290d499dd0e8 429
LancasterUniversity 1137:290d499dd0e8 430 // insert new data
LancasterUniversity 1137:290d499dd0e8 431 for (uint8_t idx = 0; idx < len; idx++) {
LancasterUniversity 1137:290d499dd0e8 432 field[2 + idx] = payload[idx];
LancasterUniversity 1137:290d499dd0e8 433 }
LancasterUniversity 1137:290d499dd0e8 434
LancasterUniversity 1137:290d499dd0e8 435 // increment lengths
LancasterUniversity 1137:290d499dd0e8 436 field[0] += len;
LancasterUniversity 1137:290d499dd0e8 437 _payloadLen += len;
LancasterUniversity 1137:290d499dd0e8 438
LancasterUniversity 1137:290d499dd0e8 439 result = BLE_ERROR_NONE;
LancasterUniversity 1137:290d499dd0e8 440 }
LancasterUniversity 1137:290d499dd0e8 441
LancasterUniversity 1137:290d499dd0e8 442 break;
LancasterUniversity 1137:290d499dd0e8 443 }
LancasterUniversity 1137:290d499dd0e8 444 // These fields will be overwritten with the new value
LancasterUniversity 1137:290d499dd0e8 445 default: {
LancasterUniversity 1137:290d499dd0e8 446 result = updateField(advDataType, payload, len, field);
LancasterUniversity 1137:290d499dd0e8 447
LancasterUniversity 1137:290d499dd0e8 448 break;
LancasterUniversity 1137:290d499dd0e8 449 }
LancasterUniversity 1137:290d499dd0e8 450 }
LancasterUniversity 1137:290d499dd0e8 451
LancasterUniversity 1137:290d499dd0e8 452 return result;
LancasterUniversity 1137:290d499dd0e8 453 }
LancasterUniversity 1137:290d499dd0e8 454
LancasterUniversity 1137:290d499dd0e8 455 /**
LancasterUniversity 1137:290d499dd0e8 456 * Given the a pointer to a field in the advertising payload it replaces
LancasterUniversity 1137:290d499dd0e8 457 * the existing data in the field with the supplied data.
LancasterUniversity 1137:290d499dd0e8 458 * Returns BLE_ERROR_NONE on success.
LancasterUniversity 1137:290d499dd0e8 459 */
LancasterUniversity 1137:290d499dd0e8 460 ble_error_t updateField(DataType_t advDataType, const uint8_t *payload, uint8_t len, uint8_t* field)
LancasterUniversity 1137:290d499dd0e8 461 {
LancasterUniversity 1137:290d499dd0e8 462 ble_error_t result = BLE_ERROR_BUFFER_OVERFLOW;
LancasterUniversity 1137:290d499dd0e8 463 uint8_t dataLength = field[0] - 1;
LancasterUniversity 1137:290d499dd0e8 464
LancasterUniversity 1137:290d499dd0e8 465 // new data has same length, do in-order replacement
LancasterUniversity 1137:290d499dd0e8 466 if (len == dataLength) {
LancasterUniversity 1137:290d499dd0e8 467 for (uint8_t idx = 0; idx < dataLength; idx++) {
LancasterUniversity 1137:290d499dd0e8 468 field[2 + idx] = payload[idx];
LancasterUniversity 1137:290d499dd0e8 469 }
LancasterUniversity 1137:290d499dd0e8 470
LancasterUniversity 1137:290d499dd0e8 471 result = BLE_ERROR_NONE;
LancasterUniversity 1137:290d499dd0e8 472 } else {
LancasterUniversity 1137:290d499dd0e8 473 // check if data fits
LancasterUniversity 1137:290d499dd0e8 474 if ((_payloadLen - dataLength + len) <= GAP_ADVERTISING_DATA_MAX_PAYLOAD) {
LancasterUniversity 1137:290d499dd0e8 475
LancasterUniversity 1137:290d499dd0e8 476 // remove old field
LancasterUniversity 1137:290d499dd0e8 477 while ((field + dataLength + 2) < &_payload[_payloadLen]) {
LancasterUniversity 1137:290d499dd0e8 478 *field = field[dataLength + 2];
LancasterUniversity 1137:290d499dd0e8 479 field++;
LancasterUniversity 1137:290d499dd0e8 480 }
LancasterUniversity 1137:290d499dd0e8 481
LancasterUniversity 1137:290d499dd0e8 482 // reduce length
LancasterUniversity 1137:290d499dd0e8 483 _payloadLen -= dataLength + 2;
LancasterUniversity 1137:290d499dd0e8 484
LancasterUniversity 1137:290d499dd0e8 485 // add new field
LancasterUniversity 1137:290d499dd0e8 486 result = appendField(advDataType, payload, len);
LancasterUniversity 1137:290d499dd0e8 487 }
LancasterUniversity 1137:290d499dd0e8 488 }
LancasterUniversity 1137:290d499dd0e8 489
LancasterUniversity 1137:290d499dd0e8 490 return result;
LancasterUniversity 1137:290d499dd0e8 491 }
LancasterUniversity 1137:290d499dd0e8 492
rgrover1 710:b2e1a2660ec2 493 uint8_t _payload[GAP_ADVERTISING_DATA_MAX_PAYLOAD];
rgrover1 710:b2e1a2660ec2 494 uint8_t _payloadLen;
rgrover1 710:b2e1a2660ec2 495 uint16_t _appearance;
rgrover1 710:b2e1a2660ec2 496 };
rgrover1 710:b2e1a2660ec2 497
rgrover1 710:b2e1a2660ec2 498 #endif // ifndef __GAP_ADVERTISING_DATA_H__