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mbed-os/features/FEATURE_BLE/ble/gap/AdvertisingDataBuilder.h

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/* mbed Microcontroller Library
* Copyright (c) 2006-2013 ARM Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef MBED_GAP_ADVERTISING_DATA_H__
#define MBED_GAP_ADVERTISING_DATA_H__
#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include "blecommon.h"
#include "platform/Span.h"
#include "NonCopyable.h"
/**
* @addtogroup ble
* @{
* @addtogroup gap
* @{
*/
struct GapAdvertisingConstant {
/*!
* List of standard Advertising Data types.
*
* These AD types are used to describe the capabilities of the peripheral
* and are inserted inside the advertising or scan response payloads.
*
* @par Source
*
* @li @c Bluetooth Core Specification 4.0 (Vol. 3), Part C, Section 11, 18.
* @li @c https://www.bluetooth.org/en-us/specification/assigned-numbers/generic-access-profile.
*/
enum DataType {
/**
* Flags, refer to AdvertisingData::Flags_t.
*/
FLAGS = 0x01,
/**
* Incomplete list of 16-bit Service IDs.
*/
INCOMPLETE_LIST_16BIT_SERVICE_IDS = 0x02,
/**
* Complete list of 16-bit Service IDs.
*/
COMPLETE_LIST_16BIT_SERVICE_IDS = 0x03,
/**
* Incomplete list of 32-bit Service IDs (not relevant for Bluetooth 4.0).
*/
INCOMPLETE_LIST_32BIT_SERVICE_IDS = 0x04,
/**
* Complete list of 32-bit Service IDs (not relevant for Bluetooth 4.0).
*/
COMPLETE_LIST_32BIT_SERVICE_IDS = 0x05,
/**
* Incomplete list of 128-bit Service IDs.
*/
INCOMPLETE_LIST_128BIT_SERVICE_IDS = 0x06,
/**
* Complete list of 128-bit Service IDs.
*/
COMPLETE_LIST_128BIT_SERVICE_IDS = 0x07,
/**
* Shortened Local Name.
*/
SHORTENED_LOCAL_NAME = 0x08,
/**
* Complete Local Name.
*/
COMPLETE_LOCAL_NAME = 0x09,
/**
* TX Power Level (in dBm).
*/
TX_POWER_LEVEL = 0x0A,
/**
* Device ID.
*/
DEVICE_ID = 0x10,
/**
* Slave Connection Interval Range.
*/
SLAVE_CONNECTION_INTERVAL_RANGE = 0x12,
/**
* List of 128-bit service UUIDs the device is looking for.
*/
LIST_128BIT_SOLICITATION_IDS = 0x15,
/**
* Service Data.
*/
SERVICE_DATA = 0x16,
/**
* Appearance, refer to AdvertisingData::Appearance_t.
*/
APPEARANCE = 0x19,
/**
* Advertising Interval.
*/
ADVERTISING_INTERVAL = 0x1A,
/**
* Manufacturer Specific Data.
*/
MANUFACTURER_SPECIFIC_DATA = 0xFF
};
/**
* Enumeration of allowed flags for DataType_t::FLAGS.
*
* @note DataType_t::FLAGS may contain several flags that the bitwise
* and operator (ex.LE_GENERAL_DISCOVERABLE & BREDR_NOT_SUPPORTED) assembled.
*
* @par Source
*
* @li @c Bluetooth Core Specification 4.0 (Vol. 3), Part C, Section 18.1.
*/
enum Flags {
/**
* Peripheral device is discoverable for a limited period of time.
*/
LE_LIMITED_DISCOVERABLE = 0x01,
/**
* Peripheral device is discoverable at any moment.
*/
LE_GENERAL_DISCOVERABLE = 0x02,
/**
* Peripheral device is LE only and does not support Bluetooth Enhanced
* DataRate.
*/
BREDR_NOT_SUPPORTED = 0x04,
/**
* Not relevant - dual mode only.
*/
SIMULTANEOUS_LE_BREDR_C = 0x08,
/**
* Not relevant - dual mode only.
*/
SIMULTANEOUS_LE_BREDR_H = 0x10
};
/**
* Enumeration of values for the DataType_t::APPEARANCE.
*
* These values describe the physical shape or appearance of the device.
*
* @par Source
*
* @li @c Bluetooth Core Specification Supplement, Part A, Section 1.12.
* @li @c Bluetooth Core Specification 4.0 (Vol. 3), Part C, Section 12.2.
* @li @c https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.gap.appearance.xml.
*/
enum Appearance {
/**
* Unknown or unspecified appearance type.
*/
UNKNOWN = 0,
/**
* Generic Phone.
*/
GENERIC_PHONE = 64,
/**
* Generic Computer.
*/
GENERIC_COMPUTER = 128,
/**
* Generic Watch.
*/
GENERIC_WATCH = 192,
/**
* Sports Watch.
*/
WATCH_SPORTS_WATCH = 193,
/**
* Generic Clock.
*/
GENERIC_CLOCK = 256,
/**
* Generic Display.
*/
GENERIC_DISPLAY = 320,
/**
* Generic Remote Control.
*/
GENERIC_REMOTE_CONTROL = 384,
/**
* Generic Eye Glasses.
*/
GENERIC_EYE_GLASSES = 448,
/**
* Generic Tag.
*/
GENERIC_TAG = 512,
/**
* Generic Keyring.
*/
GENERIC_KEYRING = 576,
/**
* Generic Media Player.
*/
GENERIC_MEDIA_PLAYER = 640,
/**
* Generic Bar Code Scanner.
*/
GENERIC_BARCODE_SCANNER = 704,
/**
* Generic Thermometer.
*/
GENERIC_THERMOMETER = 768,
/**
* Ear Thermometer.
*/
THERMOMETER_EAR = 769,
/**
* Generic Heart Rate Sensor.
*/
GENERIC_HEART_RATE_SENSOR = 832,
/**
* Belt Heart Rate Sensor.
*/
HEART_RATE_SENSOR_HEART_RATE_BELT = 833,
/**
* Generic Blood Pressure.
*/
GENERIC_BLOOD_PRESSURE = 896,
/**
* Arm Blood Pressure.
*/
BLOOD_PRESSURE_ARM = 897,
/**
* Wrist Blood Pressure.
*/
BLOOD_PRESSURE_WRIST = 898,
/**
* Human Interface Device (HID).
*/
HUMAN_INTERFACE_DEVICE_HID = 960,
/**
* Keyboard.
*/
KEYBOARD = 961,
/**
* Mouse.
*/
MOUSE = 962,
/**
* Joystick.
*/
JOYSTICK = 963,
/**
* Gamepad.
*/
GAMEPAD = 964,
/**
* Digitizer Tablet.
*/
DIGITIZER_TABLET = 965,
/**
* Card Reader.
*/
CARD_READER = 966,
/**
* Digital Pen.
*/
DIGITAL_PEN = 967,
/**
* Bar Code Scanner.
*/
BARCODE_SCANNER = 968,
/**
* Generic Glucose Meter.
*/
GENERIC_GLUCOSE_METER = 1024,
/**
* Generic Running/Walking Sensor.
*/
GENERIC_RUNNING_WALKING_SENSOR = 1088,
/**
* In Shoe Running/Walking Sensor.
*/
RUNNING_WALKING_SENSOR_IN_SHOE = 1089,
/**
* On Shoe Running/Walking Sensor.
*/
RUNNING_WALKING_SENSOR_ON_SHOE = 1090,
/**
* On Hip Running/Walking Sensor.
*/
RUNNING_WALKING_SENSOR_ON_HIP = 1091,
/**
* Generic Cycling.
*/
GENERIC_CYCLING = 1152,
/**
* Cycling Computer.
*/
CYCLING_CYCLING_COMPUTER = 1153,
/**
* Cycling Speed Sensor.
*/
CYCLING_SPEED_SENSOR = 1154,
/**
* Cycling Cadence Sensor.
*/
CYCLING_CADENCE_SENSOR = 1155,
/**
* Cycling Power Sensor.
*/
CYCLING_POWER_SENSOR = 1156,
/**
* Cycling Speed and Cadence Sensor.
*/
CYCLING_SPEED_AND_CADENCE_SENSOR = 1157,
/**
* Generic Pulse Oximeter.
*/
PULSE_OXIMETER_GENERIC = 3136,
/**
* Fingertip Pulse Oximeter.
*/
PULSE_OXIMETER_FINGERTIP = 3137,
/**
* Wrist Worn Pulse Oximeter.
*/
PULSE_OXIMETER_WRIST_WORN = 3138,
/**
* Generic Weight Scale.
*/
GENERIC_WEIGHT_SCALE = 3200,
/**
* Generic Outdoor.
*/
OUTDOOR_GENERIC = 5184,
/**
* Outdoor Location Display Device.
*/
OUTDOOR_LOCATION_DISPLAY_DEVICE = 5185,
/**
* Outdoor Location and Navigation Display Device.
*/
OUTDOOR_LOCATION_AND_NAVIGATION_DISPLAY_DEVICE = 5186,
/**
* Outdoor Location Pod.
*/
OUTDOOR_LOCATION_POD = 5187,
/**
* Outdoor Location and Navigation Pod.
*/
OUTDOOR_LOCATION_AND_NAVIGATION_POD = 5188
};
};
class AdvertisingDataBuilder
{
public:
/** Advertising data needs a user provided buffer to store the data.
*
* @param buffer Buffer used to store the data.
* @note Use Gap::getMaxAdvertisingDataLength() to find out how much can be accepted.
*/
AdvertisingDataBuilder(mbed::Span<uint8_t> buffer) :
_buffer(buffer),
_payloadLen(0) {
}
/** Advertising data needs a user provided buffer to store the data.
*
* @param buffer Pointer to buffer to be used for storing advertising data.
* @param buffer_size Size of the buffer.
* @note Use Gap::getMaxAdvertisingDataLength() to find out how much can be accepted.
*/
AdvertisingDataBuilder(uint8_t* buffer, size_t buffer_size) :
_buffer(buffer, buffer_size),
_payloadLen(0) {
}
/**
* Get the subspan of the buffer containing valid data.
*
* @return A Span containing the payload.
*/
mbed::Span<uint8_t> getAdvertisingData() const {
return _buffer.first(_payloadLen);
}
/**
* Adds a new field into the payload.
*
* If the supplied advertising data type is already present in the
* advertising payload, then the value is updated.
*
* @param[in] advDataType The type of the field to add.
* @param[in] payload Pointer to the value of the field to add.
* @param[in] len Size in bytes of the value to add.
*
* @return BLE_ERROR_NONE on success.
* @return BLE_ERROR_BUFFER_OVERFLOW if the new value causes the advertising
* buffer to overflow.
*
* @note When the specified data type is INCOMPLETE_LIST_16BIT_SERVICE_IDS,
* COMPLETE_LIST_16BIT_SERVICE_IDS, INCOMPLETE_LIST_32BIT_SERVICE_IDS,
* COMPLETE_LIST_32BIT_SERVICE_IDS, INCOMPLETE_LIST_128BIT_SERVICE_IDS,
* COMPLETE_LIST_128BIT_SERVICE_IDS or LIST_128BIT_SOLICITATION_IDS, the
* supplied value is appended to the values present in the payload.
*/
ble_error_t addData(GapAdvertisingConstant::DataType advDataType, const uint8_t *payload, uint8_t len)
{
return appendField(advDataType, payload, len);
}
/**
* Clears the advertising data payload.
*
* @post getPayloadLen() returns 0.
*/
void clear(void)
{
memset(_buffer.data(), 0, _buffer.size());
_payloadLen = 0;
}
private:
/**
* Append advertising data based on the specified type.
*
* @param[in] advDataType Type of the new data.
* @param[in] payload Pointer to the data to be appended to the advertising
* payload.
* @param[in] len Length of the data pointed to by @p payload.
*
* @return BLE_ERROR_NONE on success.
* @return BLE_ERROR_BUFFER_OVERFLOW if the specified data would cause the
* advertising buffer to overflow.
*/
ble_error_t appendField(GapAdvertisingConstant::DataType advDataType, const uint8_t *payload, uint8_t len)
{
/* Make sure we don't exceed the buffer size */
if (_payloadLen + len + 2 > _buffer.size()) {
return BLE_ERROR_BUFFER_OVERFLOW;
}
/* Field length. */
memset(_buffer.data() + _payloadLen, len + 1, 1);
_payloadLen++;
/* Field ID. */
memset(_buffer.data() + _payloadLen, (uint8_t)advDataType, 1);
_payloadLen++;
/* Payload. */
memcpy(_buffer.data() + _payloadLen, payload, len);
_payloadLen += len;
return BLE_ERROR_NONE;
}
protected:
/** The memory backing the the data provided by the user. */
mbed::Span<uint8_t> _buffer;
/** Length of the data added to the advertising buffer. */
uint8_t _payloadLen;
};
/**
* @}
* @}
*/
#endif /* ifndef MBED_GAP_ADVERTISING_DATA_H__ */
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