YuLin Jiang
BLE_API for nRF51
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Bluetooth Low Energy
Diff: ble/GapAdvertisingData.h
- Revision:
- 710:b2e1a2660ec2
- Child:
- 756:503c4bd89a3d
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ble/GapAdvertisingData.h Fri Jun 19 15:53:28 2015 +0100
@@ -0,0 +1,310 @@
+/* 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 __GAP_ADVERTISING_DATA_H__
+#define __GAP_ADVERTISING_DATA_H__
+
+#include <stdint.h>
+#include <string.h>
+
+#include "blecommon.h"
+
+#define GAP_ADVERTISING_DATA_MAX_PAYLOAD (31)
+
+/**************************************************************************/
+/*!
+ \brief
+ This class provides several helper functions to generate properly
+ formatted GAP Advertising and Scan Response data payloads
+
+ \note
+ See Bluetooth Specification 4.0 (Vol. 3), Part C, Section 11 and 18
+ for further information on Advertising and Scan Response data.
+
+ \par Advertising and Scan Response Payloads
+ Advertising data and Scan Response data are organized around a set of
+ data types called 'AD types' in Bluetooth 4.0 (see the Bluetooth Core
+ Specification v4.0, Vol. 3, Part C, Sections 11 and 18).
+
+ \par
+ Each AD type has it's own standardized 'assigned number', as defined
+ by the Bluetooth SIG:
+ https://www.bluetooth.org/en-us/specification/assigned-numbers/generic-access-profile
+
+ \par
+ For convenience sake, all appropriate AD types have been encapsulated
+ into GapAdvertisingData::DataType.
+
+ \par
+ Before the AD Types and their payload (if any) can be inserted into
+ the Advertising or Scan Response frames, they need to be formatted as
+ follows:
+
+ \li \c Record length (1 byte)
+ \li \c AD Type (1 byte)
+ \li \c AD payload (optional, only present if record length > 1)
+
+ \par
+ This class takes care of properly formatting the payload, performs
+ some basic checks on the payload length, and tries to avoid common
+ errors like adding an exclusive AD field twice in the Advertising
+ or Scan Response payload.
+
+ \par EXAMPLE
+
+ \code
+
+ // ToDo
+
+ \endcode
+*/
+/**************************************************************************/
+class GapAdvertisingData
+{
+public:
+ /**********************************************************************/
+ /*!
+ \brief
+ A list of Advertising Data types commonly used by peripherals.
+ These AD types are used to describe the capabilities of the
+ peripheral, and get 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 = 0x01, /**< \ref *Flags */
+ INCOMPLETE_LIST_16BIT_SERVICE_IDS = 0x02, /**< Incomplete list of 16-bit Service IDs */
+ COMPLETE_LIST_16BIT_SERVICE_IDS = 0x03, /**< Complete list of 16-bit Service IDs */
+ INCOMPLETE_LIST_32BIT_SERVICE_IDS = 0x04, /**< Incomplete list of 32-bit Service IDs (not relevant for Bluetooth 4.0) */
+ COMPLETE_LIST_32BIT_SERVICE_IDS = 0x05, /**< Complete list of 32-bit Service IDs (not relevant for Bluetooth 4.0) */
+ INCOMPLETE_LIST_128BIT_SERVICE_IDS = 0x06, /**< Incomplete list of 128-bit Service IDs */
+ COMPLETE_LIST_128BIT_SERVICE_IDS = 0x07, /**< Complete list of 128-bit Service IDs */
+ SHORTENED_LOCAL_NAME = 0x08, /**< Shortened Local Name */
+ COMPLETE_LOCAL_NAME = 0x09, /**< Complete Local Name */
+ TX_POWER_LEVEL = 0x0A, /**< TX Power Level (in dBm) */
+ DEVICE_ID = 0x10, /**< Device ID */
+ SLAVE_CONNECTION_INTERVAL_RANGE = 0x12, /**< Slave Connection Interval Range */
+ SERVICE_DATA = 0x16, /**< Service Data */
+ APPEARANCE = 0x19, /**< \ref Appearance */
+ ADVERTISING_INTERVAL = 0x1A, /**< Advertising Interval */
+ MANUFACTURER_SPECIFIC_DATA = 0xFF /**< Manufacturer Specific Data */
+ };
+
+ /**********************************************************************/
+ /*!
+ \brief
+ A list of values for the FLAGS AD Type
+
+ \note
+ You can use more than one value in the FLAGS AD Type (ex.
+ LE_GENERAL_DISCOVERABLE and BREDR_NOT_SUPPORTED).
+
+ \par Source
+ \li \c Bluetooth Core Specification 4.0 (Vol. 3), Part C, Section 18.1
+ */
+ /**********************************************************************/
+ enum Flags {
+ LE_LIMITED_DISCOVERABLE = 0x01, /**< *Peripheral device is discoverable for a limited period of time */
+ LE_GENERAL_DISCOVERABLE = 0x02, /**< Peripheral device is discoverable at any moment */
+ BREDR_NOT_SUPPORTED = 0x04, /**< Peripheral device is LE only */
+ SIMULTANEOUS_LE_BREDR_C = 0x08, /**< Not relevant - central mode only */
+ SIMULTANEOUS_LE_BREDR_H = 0x10 /**< Not relevant - central mode only */
+ };
+
+ /**********************************************************************/
+ /*!
+ \brief
+ A list of values for the APPEARANCE AD Type, which describes 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 = 0, /**< Unknown of unspecified appearance type */
+ GENERIC_PHONE = 64, /**< Generic Phone */
+ GENERIC_COMPUTER = 128, /**< Generic Computer */
+ GENERIC_WATCH = 192, /**< Generic Watch */
+ WATCH_SPORTS_WATCH = 193, /**< Sports Watch */
+ GENERIC_CLOCK = 256, /**< Generic Clock */
+ GENERIC_DISPLAY = 320, /**< Generic Display */
+ GENERIC_REMOTE_CONTROL = 384, /**< Generic Remote Control */
+ GENERIC_EYE_GLASSES = 448, /**< Generic Eye Glasses */
+ GENERIC_TAG = 512, /**< Generic Tag */
+ GENERIC_KEYRING = 576, /**< Generic Keyring */
+ GENERIC_MEDIA_PLAYER = 640, /**< Generic Media Player */
+ GENERIC_BARCODE_SCANNER = 704, /**< Generic Barcode Scanner */
+ GENERIC_THERMOMETER = 768, /**< Generic Thermometer */
+ THERMOMETER_EAR = 769, /**< Ear Thermometer */
+ GENERIC_HEART_RATE_SENSOR = 832, /**< Generic Heart Rate Sensor */
+ HEART_RATE_SENSOR_HEART_RATE_BELT = 833, /**< Belt Heart Rate Sensor */
+ GENERIC_BLOOD_PRESSURE = 896, /**< Generic Blood Pressure */
+ BLOOD_PRESSURE_ARM = 897, /**< Arm Blood Pressure */
+ BLOOD_PRESSURE_WRIST = 898, /**< Wrist Blood Pressure */
+ HUMAN_INTERFACE_DEVICE_HID = 960, /**< Human Interface Device (HID) */
+ KEYBOARD = 961, /**< Keyboard */
+ MOUSE = 962, /**< Mouse */
+ JOYSTICK = 963, /**< Joystick */
+ GAMEPAD = 964, /**< Gamepad */
+ DIGITIZER_TABLET = 965, /**< Digitizer Tablet */
+ CARD_READER = 966, /**< Card Read */
+ DIGITAL_PEN = 967, /**< Digital Pen */
+ BARCODE_SCANNER = 968, /**< Barcode Scanner */
+ GENERIC_GLUCOSE_METER = 1024, /**< Generic Glucose Meter */
+ GENERIC_RUNNING_WALKING_SENSOR = 1088, /**< Generic Running/Walking Sensor */
+ RUNNING_WALKING_SENSOR_IN_SHOE = 1089, /**< In Shoe Running/Walking Sensor */
+ RUNNING_WALKING_SENSOR_ON_SHOE = 1090, /**< On Shoe Running/Walking Sensor */
+ RUNNING_WALKING_SENSOR_ON_HIP = 1091, /**< On Hip Running/Walking Sensor */
+ GENERIC_CYCLING = 1152, /**< Generic Cycling */
+ CYCLING_CYCLING_COMPUTER = 1153, /**< Cycling Computer */
+ CYCLING_SPEED_SENSOR = 1154, /**< Cycling Speed Senspr */
+ CYCLING_CADENCE_SENSOR = 1155, /**< Cycling Cadence Sensor */
+ CYCLING_POWER_SENSOR = 1156, /**< Cycling Power Sensor */
+ CYCLING_SPEED_AND_CADENCE_SENSOR = 1157, /**< Cycling Speed and Cadence Sensor */
+ PULSE_OXIMETER_GENERIC = 3136, /**< Generic Pulse Oximeter */
+ PULSE_OXIMETER_FINGERTIP = 3137, /**< Fingertip Pulse Oximeter */
+ PULSE_OXIMETER_WRIST_WORN = 3138, /**< Wrist Worn Pulse Oximeter */
+ OUTDOOR_GENERIC = 5184, /**< Generic Outdoor */
+ OUTDOOR_LOCATION_DISPLAY_DEVICE = 5185, /**< Outdoor Location Display Device */
+ OUTDOOR_LOCATION_AND_NAVIGATION_DISPLAY_DEVICE = 5186, /**< Outdoor Location and Navigation Display Device */
+ OUTDOOR_LOCATION_POD = 5187, /**< Outdoor Location Pod */
+ OUTDOOR_LOCATION_AND_NAVIGATION_POD = 5188 /**< Outdoor Location and Navigation Pod */
+ };
+
+ GapAdvertisingData(void) : _payload(), _payloadLen(0), _appearance(GENERIC_TAG) {
+ /* empty */
+ }
+
+ /**
+ * Adds advertising data based on the specified AD type (see DataType)
+ *
+ * @param advDataType The Advertising 'DataType' to add
+ * @param payload Pointer to the payload contents
+ * @param len Size of the payload in bytes
+ *
+ * @return BLE_ERROR_BUFFER_OVERFLOW if the specified data would cause the
+ * advertising buffer to overflow, else BLE_ERROR_NONE.
+ */
+ ble_error_t addData(DataType advDataType, const uint8_t *payload, uint8_t len)
+ {
+ /* ToDo: Check if an AD type already exists and if the existing */
+ /* value is exclusive or not (flags, etc.) */
+
+ /* Make sure we don't exceed the 31 byte payload limit */
+ if (_payloadLen + len + 2 > GAP_ADVERTISING_DATA_MAX_PAYLOAD) {
+ return BLE_ERROR_BUFFER_OVERFLOW;
+ }
+
+ /* Field length */
+ memset(&_payload[_payloadLen], len + 1, 1);
+ _payloadLen++;
+
+ /* Field ID */
+ memset(&_payload[_payloadLen], (uint8_t)advDataType, 1);
+ _payloadLen++;
+
+ /* Payload */
+ memcpy(&_payload[_payloadLen], payload, len);
+ _payloadLen += len;
+
+ return BLE_ERROR_NONE;
+ }
+
+ /**
+ * Helper function to add APPEARANCE data to the advertising payload
+ *
+ * @param appearance
+ * The APPEARANCE value to add
+ *
+ * @return BLE_ERROR_BUFFER_OVERFLOW if the specified data would cause the
+ * advertising buffer to overflow, else BLE_ERROR_NONE.
+ */
+ ble_error_t addAppearance(Appearance appearance = GENERIC_TAG) {
+ _appearance = appearance;
+ return addData(GapAdvertisingData::APPEARANCE, (uint8_t *)&appearance, 2);
+ }
+
+ /**
+ * Helper function to add FLAGS data to the advertising payload.
+ * @param flags
+ * LE_LIMITED_DISCOVERABLE
+ * The peripheral is discoverable for a limited period of time.
+ * LE_GENERAL_DISCOVERABLE
+ * The peripheral is permanently discoverable.
+ * BREDR_NOT_SUPPORTED
+ * This peripheral is a Bluetooth Low Energy only device (no EDR support).
+ *
+ * @return BLE_ERROR_BUFFER_OVERFLOW if the specified data would cause the
+ * advertising buffer to overflow, else BLE_ERROR_NONE.
+ */
+ ble_error_t addFlags(uint8_t flags = LE_GENERAL_DISCOVERABLE) {
+ return addData(GapAdvertisingData::FLAGS, &flags, 1);
+ }
+
+ /**
+ * Helper function to add TX_POWER_LEVEL data to the advertising payload
+ *
+ * @return BLE_ERROR_BUFFER_OVERFLOW if the specified data would cause the
+ * advertising buffer to overflow, else BLE_ERROR_NONE.
+ */
+ ble_error_t addTxPower(int8_t txPower) {
+ /* ToDo: Basic error checking to make sure txPower is in range */
+ return addData(GapAdvertisingData::TX_POWER_LEVEL, (uint8_t *)&txPower, 1);
+ }
+
+ /**
+ * Clears the payload and resets the payload length counter
+ */
+ void clear(void) {
+ memset(&_payload, 0, GAP_ADVERTISING_DATA_MAX_PAYLOAD);
+ _payloadLen = 0;
+ }
+
+ /**
+ * Returns a pointer to the the current payload
+ */
+ const uint8_t *getPayload(void) const {
+ return (_payloadLen > 0) ? _payload : NULL;
+ }
+
+ /**
+ * Returns the current payload length (0..31 bytes)
+ */
+ uint8_t getPayloadLen(void) const {
+ return _payloadLen;
+ }
+
+ /**
+ * Returns the 16-bit appearance value for this device
+ */
+ uint16_t getAppearance(void) const {
+ return (uint16_t)_appearance;
+ }
+
+private:
+ uint8_t _payload[GAP_ADVERTISING_DATA_MAX_PAYLOAD];
+ uint8_t _payloadLen;
+ uint16_t _appearance;
+};
+
+#endif // ifndef __GAP_ADVERTISING_DATA_H__
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