Marco Ferreira / BLE_API

just a fork

Fork of BLE_API by Bluetooth Low Energy

ble/GapAdvertisingData.h@1052:b55e1ad3e1b3, 2016-01-11 (annotated)

Committer:
vcoubard
Date:
Mon Jan 11 08:51:31 2016 +0000
Revision:
1052:b55e1ad3e1b3
Parent:
1048:efb29faf12fc
Child:
1093:88e7e17f8609
Synchronized with git rev 9f31f380

Author: Vincent Coubard

Merge remote-tracking branch 'origin/develop' into descriptorDiscovery

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. */
vcoubard 1048:efb29faf12fc 190 OUTDOOR_GENERIC = 5184, /**< Generic Outdoor. */
vcoubard 1048:efb29faf12fc 191 OUTDOOR_LOCATION_DISPLAY_DEVICE = 5185, /**< Outdoor Location Display Device. */
vcoubard 1048:efb29faf12fc 192 OUTDOOR_LOCATION_AND_NAVIGATION_DISPLAY_DEVICE = 5186, /**< Outdoor Location and Navigation Display Device. */
vcoubard 1048:efb29faf12fc 193 OUTDOOR_LOCATION_POD = 5187, /**< Outdoor Location Pod. */
vcoubard 1048:efb29faf12fc 194 OUTDOOR_LOCATION_AND_NAVIGATION_POD = 5188 /**< Outdoor Location and Navigation Pod. */
rgrover1 710:b2e1a2660ec2 195 };
rgrover1 756:503c4bd89a3d 196 typedef enum Appearance_t Appearance; /* Deprecated type alias. This may be dropped in a future release. */
rgrover1 710:b2e1a2660ec2 197
rgrover1 710:b2e1a2660ec2 198 GapAdvertisingData(void) : _payload(), _payloadLen(0), _appearance(GENERIC_TAG) {
rgrover1 710:b2e1a2660ec2 199 /* empty */
rgrover1 710:b2e1a2660ec2 200 }
rgrover1 710:b2e1a2660ec2 201
rgrover1 710:b2e1a2660ec2 202 /**
vcoubard 1048:efb29faf12fc 203 * Adds advertising data based on the specified AD type (see DataType).
rgrover1 710:b2e1a2660ec2 204 *
vcoubard 1048:efb29faf12fc 205 * @param advDataType The Advertising 'DataType' to add.
vcoubard 1048:efb29faf12fc 206 * @param payload Pointer to the payload contents.
vcoubard 1048:efb29faf12fc 207 * @param len Size of the payload in bytes.
rgrover1 710:b2e1a2660ec2 208 *
rgrover1 710:b2e1a2660ec2 209 * @return BLE_ERROR_BUFFER_OVERFLOW if the specified data would cause the
rgrover1 710:b2e1a2660ec2 210 * advertising buffer to overflow, else BLE_ERROR_NONE.
rgrover1 710:b2e1a2660ec2 211 */
rgrover1 710:b2e1a2660ec2 212 ble_error_t addData(DataType advDataType, const uint8_t *payload, uint8_t len)
rgrover1 765:4cd91998cd48 213 {
vcoubard 1052:b55e1ad3e1b3 214 ble_error_t result = BLE_ERROR_BUFFER_OVERFLOW;
vcoubard 1052:b55e1ad3e1b3 215
vcoubard 1052:b55e1ad3e1b3 216 // find field
vcoubard 1052:b55e1ad3e1b3 217 uint8_t* field = findField(advDataType);
vcoubard 1052:b55e1ad3e1b3 218
vcoubard 1052:b55e1ad3e1b3 219 // Field type already exist, either add to field or replace
vcoubard 1052:b55e1ad3e1b3 220 if (field) {
vcoubard 1052:b55e1ad3e1b3 221 switch(advDataType) {
vcoubard 1052:b55e1ad3e1b3 222 // These fields will be overwritten with the new value
vcoubard 1052:b55e1ad3e1b3 223 case FLAGS:
vcoubard 1052:b55e1ad3e1b3 224 case SHORTENED_LOCAL_NAME:
vcoubard 1052:b55e1ad3e1b3 225 case COMPLETE_LOCAL_NAME:
vcoubard 1052:b55e1ad3e1b3 226 case TX_POWER_LEVEL:
vcoubard 1052:b55e1ad3e1b3 227 case DEVICE_ID:
vcoubard 1052:b55e1ad3e1b3 228 case SLAVE_CONNECTION_INTERVAL_RANGE:
vcoubard 1052:b55e1ad3e1b3 229 case SERVICE_DATA:
vcoubard 1052:b55e1ad3e1b3 230 case APPEARANCE:
vcoubard 1052:b55e1ad3e1b3 231 case ADVERTISING_INTERVAL:
vcoubard 1052:b55e1ad3e1b3 232 case MANUFACTURER_SPECIFIC_DATA: {
vcoubard 1052:b55e1ad3e1b3 233 // current field length, with the type subtracted
vcoubard 1052:b55e1ad3e1b3 234 uint8_t dataLength = field[0] - 1;
vcoubard 1052:b55e1ad3e1b3 235
vcoubard 1052:b55e1ad3e1b3 236 // new data has same length, do in-order replacement
vcoubard 1052:b55e1ad3e1b3 237 if (len == dataLength) {
vcoubard 1052:b55e1ad3e1b3 238 for (uint8_t idx = 0; idx < dataLength; idx++) {
vcoubard 1052:b55e1ad3e1b3 239 field[2 + idx] = payload[idx];
vcoubard 1052:b55e1ad3e1b3 240 }
vcoubard 1052:b55e1ad3e1b3 241 } else {
vcoubard 1052:b55e1ad3e1b3 242 // check if data fits
vcoubard 1052:b55e1ad3e1b3 243 if ((_payloadLen - dataLength + len) <= GAP_ADVERTISING_DATA_MAX_PAYLOAD) {
vcoubard 1052:b55e1ad3e1b3 244
vcoubard 1052:b55e1ad3e1b3 245 // remove old field
vcoubard 1052:b55e1ad3e1b3 246 while ((field + dataLength + 2) < &_payload[_payloadLen]) {
vcoubard 1052:b55e1ad3e1b3 247 *field = field[dataLength + 2];
vcoubard 1052:b55e1ad3e1b3 248 field++;
vcoubard 1052:b55e1ad3e1b3 249 }
vcoubard 1052:b55e1ad3e1b3 250
vcoubard 1052:b55e1ad3e1b3 251 // reduce length
vcoubard 1052:b55e1ad3e1b3 252 _payloadLen -= dataLength + 2;
vcoubard 1052:b55e1ad3e1b3 253
vcoubard 1052:b55e1ad3e1b3 254 // add new field
vcoubard 1052:b55e1ad3e1b3 255 result = appendField(advDataType, payload, len);
vcoubard 1052:b55e1ad3e1b3 256 }
vcoubard 1052:b55e1ad3e1b3 257 }
rgrover1 710:b2e1a2660ec2 258
vcoubard 1052:b55e1ad3e1b3 259 break;
vcoubard 1052:b55e1ad3e1b3 260 }
vcoubard 1052:b55e1ad3e1b3 261 // These fields will have the new data appended if there is sufficient space
vcoubard 1052:b55e1ad3e1b3 262 case INCOMPLETE_LIST_16BIT_SERVICE_IDS:
vcoubard 1052:b55e1ad3e1b3 263 case COMPLETE_LIST_16BIT_SERVICE_IDS:
vcoubard 1052:b55e1ad3e1b3 264 case INCOMPLETE_LIST_32BIT_SERVICE_IDS:
vcoubard 1052:b55e1ad3e1b3 265 case COMPLETE_LIST_32BIT_SERVICE_IDS:
vcoubard 1052:b55e1ad3e1b3 266 case INCOMPLETE_LIST_128BIT_SERVICE_IDS:
vcoubard 1052:b55e1ad3e1b3 267 case COMPLETE_LIST_128BIT_SERVICE_IDS:
vcoubard 1052:b55e1ad3e1b3 268 case LIST_128BIT_SOLICITATION_IDS: {
vcoubard 1052:b55e1ad3e1b3 269 // check if data fits
vcoubard 1052:b55e1ad3e1b3 270 if ((_payloadLen + len) <= GAP_ADVERTISING_DATA_MAX_PAYLOAD) {
vcoubard 1052:b55e1ad3e1b3 271 // make room for new field by moving the remainder of the
vcoubard 1052:b55e1ad3e1b3 272 // advertisement payload "to the right" starting after the
vcoubard 1052:b55e1ad3e1b3 273 // TYPE field.
vcoubard 1052:b55e1ad3e1b3 274 uint8_t* end = &_payload[_payloadLen];
vcoubard 1052:b55e1ad3e1b3 275
vcoubard 1052:b55e1ad3e1b3 276 while (&field[1] < end) {
vcoubard 1052:b55e1ad3e1b3 277 end[len] = *end;
vcoubard 1052:b55e1ad3e1b3 278 end--;
vcoubard 1052:b55e1ad3e1b3 279 }
vcoubard 1052:b55e1ad3e1b3 280
vcoubard 1052:b55e1ad3e1b3 281 // insert new data
vcoubard 1052:b55e1ad3e1b3 282 for (uint8_t idx = 0; idx < len; idx++) {
vcoubard 1052:b55e1ad3e1b3 283 field[2 + idx] = payload[idx];
vcoubard 1052:b55e1ad3e1b3 284 }
vcoubard 1052:b55e1ad3e1b3 285
vcoubard 1052:b55e1ad3e1b3 286 // increment lengths
vcoubard 1052:b55e1ad3e1b3 287 field[0] += len;
vcoubard 1052:b55e1ad3e1b3 288 _payloadLen += len;
vcoubard 1052:b55e1ad3e1b3 289
vcoubard 1052:b55e1ad3e1b3 290 result = BLE_ERROR_NONE;
vcoubard 1052:b55e1ad3e1b3 291 }
vcoubard 1052:b55e1ad3e1b3 292
vcoubard 1052:b55e1ad3e1b3 293 break;
vcoubard 1052:b55e1ad3e1b3 294 }
vcoubard 1052:b55e1ad3e1b3 295 // Field exists but updating it is not supported. Abort operation.
vcoubard 1052:b55e1ad3e1b3 296 default:
vcoubard 1052:b55e1ad3e1b3 297 result = BLE_ERROR_NOT_IMPLEMENTED;
vcoubard 1052:b55e1ad3e1b3 298 break;
vcoubard 1052:b55e1ad3e1b3 299 }
vcoubard 1052:b55e1ad3e1b3 300 } else {
vcoubard 1052:b55e1ad3e1b3 301 // field doesn't exists, insert new
vcoubard 1052:b55e1ad3e1b3 302 result = appendField(advDataType, payload, len);
rgrover1 710:b2e1a2660ec2 303 }
rgrover1 710:b2e1a2660ec2 304
vcoubard 1052:b55e1ad3e1b3 305 return result;
rgrover1 710:b2e1a2660ec2 306 }
rgrover1 710:b2e1a2660ec2 307
rgrover1 710:b2e1a2660ec2 308 /**
rgrover1 765:4cd91998cd48 309 * Update a particular ADV field in the advertising payload (based on
rgrover1 765:4cd91998cd48 310 * matching type and length). Note: the length of the new data must be the
rgrover1 765:4cd91998cd48 311 * same as the old one.
rgrover1 763:36c3e2b1f1ae 312 *
rgrover1 765:4cd91998cd48 313 * @param[in] advDataType The Advertising 'DataType' to add.
rgrover1 765:4cd91998cd48 314 * @param[in] payload Pointer to the payload contents.
rgrover1 765:4cd91998cd48 315 * @param[in] len Size of the payload in bytes.
rgrover1 763:36c3e2b1f1ae 316 *
rgrover1 763:36c3e2b1f1ae 317 * @return BLE_ERROR_UNSPECIFIED if the specified field is not found, else
rgrover1 763:36c3e2b1f1ae 318 * BLE_ERROR_NONE.
rgrover1 763:36c3e2b1f1ae 319 */
rgrover1 765:4cd91998cd48 320 ble_error_t updateData(DataType_t advDataType, const uint8_t *payload, uint8_t len)
rgrover1 765:4cd91998cd48 321 {
rgrover1 765:4cd91998cd48 322 if ((payload == NULL) || (len == 0)) {
rgrover1 765:4cd91998cd48 323 return BLE_ERROR_INVALID_PARAM;
rgrover1 765:4cd91998cd48 324 }
rgrover1 765:4cd91998cd48 325
rgrover1 765:4cd91998cd48 326 /* A local struct to describe an ADV field. This definition comes from the Bluetooth Core Spec. (v4.2) Part C, Section 11. */
rgrover1 765:4cd91998cd48 327 struct ADVField_t {
vcoubard 1048:efb29faf12fc 328 uint8_t len; /* Describes the length (in bytes) of the following type and bytes. */
rgrover1 765:4cd91998cd48 329 uint8_t type; /* Should have the same representation of DataType_t (above). */
rgrover1 765:4cd91998cd48 330 uint8_t bytes[0]; /* A placeholder for variable length data. */
rgrover1 765:4cd91998cd48 331 };
rgrover1 765:4cd91998cd48 332
rgrover1 765:4cd91998cd48 333 /* Iterate over the adv fields looking for the first match. */
rgrover1 763:36c3e2b1f1ae 334 uint8_t byteIndex = 0;
rgrover1 763:36c3e2b1f1ae 335 while (byteIndex < _payloadLen) {
rgrover1 765:4cd91998cd48 336 ADVField_t *currentADV = (ADVField_t *)&_payload[byteIndex];
vcoubard 1048:efb29faf12fc 337 if ((currentADV->len == (len + 1)) && /* Incoming len only describes the payload, whereas ADV->len describes [type + payload]. */
rgrover1 765:4cd91998cd48 338 (currentADV->type == advDataType)) {
rgrover1 765:4cd91998cd48 339 memcpy(currentADV->bytes, payload, len);
rgrover1 763:36c3e2b1f1ae 340 return BLE_ERROR_NONE;
rgrover1 763:36c3e2b1f1ae 341 }
rgrover1 765:4cd91998cd48 342
vcoubard 1048:efb29faf12fc 343 byteIndex += (currentADV->len + 1); /* Advance by len+1; '+1' is needed to span the len field itself. */
rgrover1 763:36c3e2b1f1ae 344 }
rgrover1 763:36c3e2b1f1ae 345
rgrover1 763:36c3e2b1f1ae 346 return BLE_ERROR_UNSPECIFIED;
rgrover1 763:36c3e2b1f1ae 347 }
rgrover1 763:36c3e2b1f1ae 348
rgrover1 763:36c3e2b1f1ae 349 /**
vcoubard 1048:efb29faf12fc 350 * Helper function to add APPEARANCE data to the advertising payload.
rgrover1 710:b2e1a2660ec2 351 *
rgrover1 710:b2e1a2660ec2 352 * @param appearance
vcoubard 1048:efb29faf12fc 353 * The APPEARANCE value to add.
rgrover1 710:b2e1a2660ec2 354 *
rgrover1 710:b2e1a2660ec2 355 * @return BLE_ERROR_BUFFER_OVERFLOW if the specified data would cause the
rgrover1 710:b2e1a2660ec2 356 * advertising buffer to overflow, else BLE_ERROR_NONE.
rgrover1 710:b2e1a2660ec2 357 */
rgrover1 710:b2e1a2660ec2 358 ble_error_t addAppearance(Appearance appearance = GENERIC_TAG) {
rgrover1 710:b2e1a2660ec2 359 _appearance = appearance;
rgrover1 710:b2e1a2660ec2 360 return addData(GapAdvertisingData::APPEARANCE, (uint8_t *)&appearance, 2);
rgrover1 710:b2e1a2660ec2 361 }
rgrover1 710:b2e1a2660ec2 362
rgrover1 710:b2e1a2660ec2 363 /**
rgrover1 710:b2e1a2660ec2 364 * Helper function to add FLAGS data to the advertising payload.
rgrover1 710:b2e1a2660ec2 365 * @param flags
rgrover1 710:b2e1a2660ec2 366 * LE_LIMITED_DISCOVERABLE
rgrover1 710:b2e1a2660ec2 367 * The peripheral is discoverable for a limited period of time.
rgrover1 710:b2e1a2660ec2 368 * LE_GENERAL_DISCOVERABLE
rgrover1 710:b2e1a2660ec2 369 * The peripheral is permanently discoverable.
rgrover1 710:b2e1a2660ec2 370 * BREDR_NOT_SUPPORTED
rgrover1 710:b2e1a2660ec2 371 * This peripheral is a Bluetooth Low Energy only device (no EDR support).
rgrover1 710:b2e1a2660ec2 372 *
rgrover1 710:b2e1a2660ec2 373 * @return BLE_ERROR_BUFFER_OVERFLOW if the specified data would cause the
rgrover1 710:b2e1a2660ec2 374 * advertising buffer to overflow, else BLE_ERROR_NONE.
rgrover1 710:b2e1a2660ec2 375 */
rgrover1 710:b2e1a2660ec2 376 ble_error_t addFlags(uint8_t flags = LE_GENERAL_DISCOVERABLE) {
rgrover1 710:b2e1a2660ec2 377 return addData(GapAdvertisingData::FLAGS, &flags, 1);
rgrover1 710:b2e1a2660ec2 378 }
rgrover1 710:b2e1a2660ec2 379
rgrover1 710:b2e1a2660ec2 380 /**
vcoubard 1048:efb29faf12fc 381 * Helper function to add TX_POWER_LEVEL data to the advertising payload.
rgrover1 710:b2e1a2660ec2 382 *
rgrover1 710:b2e1a2660ec2 383 * @return BLE_ERROR_BUFFER_OVERFLOW if the specified data would cause the
rgrover1 710:b2e1a2660ec2 384 * advertising buffer to overflow, else BLE_ERROR_NONE.
rgrover1 710:b2e1a2660ec2 385 */
rgrover1 710:b2e1a2660ec2 386 ble_error_t addTxPower(int8_t txPower) {
vcoubard 1048:efb29faf12fc 387 /* To Do: Basic error checking to make sure txPower is in range. */
rgrover1 710:b2e1a2660ec2 388 return addData(GapAdvertisingData::TX_POWER_LEVEL, (uint8_t *)&txPower, 1);
rgrover1 710:b2e1a2660ec2 389 }
rgrover1 710:b2e1a2660ec2 390
rgrover1 710:b2e1a2660ec2 391 /**
vcoubard 1048:efb29faf12fc 392 * Clears the payload and resets the payload length counter.
rgrover1 710:b2e1a2660ec2 393 */
rgrover1 710:b2e1a2660ec2 394 void clear(void) {
rgrover1 710:b2e1a2660ec2 395 memset(&_payload, 0, GAP_ADVERTISING_DATA_MAX_PAYLOAD);
rgrover1 710:b2e1a2660ec2 396 _payloadLen = 0;
rgrover1 710:b2e1a2660ec2 397 }
rgrover1 710:b2e1a2660ec2 398
rgrover1 710:b2e1a2660ec2 399 /**
vcoubard 1048:efb29faf12fc 400 * Returns a pointer to the current payload.
rgrover1 710:b2e1a2660ec2 401 */
rgrover1 710:b2e1a2660ec2 402 const uint8_t *getPayload(void) const {
rgrover1 769:2d236d9afa9e 403 return _payload;
rgrover1 710:b2e1a2660ec2 404 }
rgrover1 710:b2e1a2660ec2 405
rgrover1 710:b2e1a2660ec2 406 /**
vcoubard 1048:efb29faf12fc 407 * Returns the current payload length (0..31 bytes).
rgrover1 710:b2e1a2660ec2 408 */
rgrover1 710:b2e1a2660ec2 409 uint8_t getPayloadLen(void) const {
rgrover1 710:b2e1a2660ec2 410 return _payloadLen;
rgrover1 710:b2e1a2660ec2 411 }
rgrover1 710:b2e1a2660ec2 412
rgrover1 710:b2e1a2660ec2 413 /**
vcoubard 1048:efb29faf12fc 414 * Returns the 16-bit appearance value for this device.
rgrover1 710:b2e1a2660ec2 415 */
rgrover1 710:b2e1a2660ec2 416 uint16_t getAppearance(void) const {
rgrover1 710:b2e1a2660ec2 417 return (uint16_t)_appearance;
rgrover1 710:b2e1a2660ec2 418 }
rgrover1 710:b2e1a2660ec2 419
vcoubard 1052:b55e1ad3e1b3 420 /**
vcoubard 1052:b55e1ad3e1b3 421 * Search advertisement data for field.
vcoubard 1052:b55e1ad3e1b3 422 * Returns pointer to the first element in the field if found, NULL otherwise.
vcoubard 1052:b55e1ad3e1b3 423 * Where the first element is the length of the field.
vcoubard 1052:b55e1ad3e1b3 424 */
vcoubard 1052:b55e1ad3e1b3 425 const uint8_t* findField(DataType_t type) const {
vcoubard 1052:b55e1ad3e1b3 426 return findField(type);
vcoubard 1052:b55e1ad3e1b3 427 }
vcoubard 1052:b55e1ad3e1b3 428
rgrover1 710:b2e1a2660ec2 429 private:
vcoubard 1052:b55e1ad3e1b3 430 /**
vcoubard 1052:b55e1ad3e1b3 431 * Append advertising data based on the specified AD type (see DataType)
vcoubard 1052:b55e1ad3e1b3 432 */
vcoubard 1052:b55e1ad3e1b3 433 ble_error_t appendField(DataType advDataType, const uint8_t *payload, uint8_t len)
vcoubard 1052:b55e1ad3e1b3 434 {
vcoubard 1052:b55e1ad3e1b3 435 /* Make sure we don't exceed the 31 byte payload limit */
vcoubard 1052:b55e1ad3e1b3 436 if (_payloadLen + len + 2 > GAP_ADVERTISING_DATA_MAX_PAYLOAD) {
vcoubard 1052:b55e1ad3e1b3 437 return BLE_ERROR_BUFFER_OVERFLOW;
vcoubard 1052:b55e1ad3e1b3 438 }
vcoubard 1052:b55e1ad3e1b3 439
vcoubard 1052:b55e1ad3e1b3 440 /* Field length. */
vcoubard 1052:b55e1ad3e1b3 441 memset(&_payload[_payloadLen], len + 1, 1);
vcoubard 1052:b55e1ad3e1b3 442 _payloadLen++;
vcoubard 1052:b55e1ad3e1b3 443
vcoubard 1052:b55e1ad3e1b3 444 /* Field ID. */
vcoubard 1052:b55e1ad3e1b3 445 memset(&_payload[_payloadLen], (uint8_t)advDataType, 1);
vcoubard 1052:b55e1ad3e1b3 446 _payloadLen++;
vcoubard 1052:b55e1ad3e1b3 447
vcoubard 1052:b55e1ad3e1b3 448 /* Payload. */
vcoubard 1052:b55e1ad3e1b3 449 memcpy(&_payload[_payloadLen], payload, len);
vcoubard 1052:b55e1ad3e1b3 450 _payloadLen += len;
vcoubard 1052:b55e1ad3e1b3 451
vcoubard 1052:b55e1ad3e1b3 452 return BLE_ERROR_NONE;
vcoubard 1052:b55e1ad3e1b3 453 }
vcoubard 1052:b55e1ad3e1b3 454
vcoubard 1052:b55e1ad3e1b3 455 /**
vcoubard 1052:b55e1ad3e1b3 456 * Search advertisement data for field.
vcoubard 1052:b55e1ad3e1b3 457 * Returns pointer to the first element in the field if found, NULL otherwise.
vcoubard 1052:b55e1ad3e1b3 458 * Where the first element is the length of the field.
vcoubard 1052:b55e1ad3e1b3 459 */
vcoubard 1052:b55e1ad3e1b3 460 uint8_t* findField(DataType_t type) {
vcoubard 1052:b55e1ad3e1b3 461 // scan through advertisement data
vcoubard 1052:b55e1ad3e1b3 462 for (uint8_t idx = 0; idx < _payloadLen; ) {
vcoubard 1052:b55e1ad3e1b3 463 uint8_t fieldType = _payload[idx + 1];
vcoubard 1052:b55e1ad3e1b3 464
vcoubard 1052:b55e1ad3e1b3 465 if (fieldType == type) {
vcoubard 1052:b55e1ad3e1b3 466 return &_payload[idx];
vcoubard 1052:b55e1ad3e1b3 467 }
vcoubard 1052:b55e1ad3e1b3 468
vcoubard 1052:b55e1ad3e1b3 469 // advance to next field
vcoubard 1052:b55e1ad3e1b3 470 idx += _payload[idx] + 1;
vcoubard 1052:b55e1ad3e1b3 471 }
vcoubard 1052:b55e1ad3e1b3 472
vcoubard 1052:b55e1ad3e1b3 473 // field not found
vcoubard 1052:b55e1ad3e1b3 474 return NULL;
vcoubard 1052:b55e1ad3e1b3 475 }
vcoubard 1052:b55e1ad3e1b3 476
rgrover1 710:b2e1a2660ec2 477 uint8_t _payload[GAP_ADVERTISING_DATA_MAX_PAYLOAD];
rgrover1 710:b2e1a2660ec2 478 uint8_t _payloadLen;
rgrover1 710:b2e1a2660ec2 479 uint16_t _appearance;
rgrover1 710:b2e1a2660ec2 480 };
rgrover1 710:b2e1a2660ec2 481
rgrover1 710:b2e1a2660ec2 482 #endif // ifndef __GAP_ADVERTISING_DATA_H__