Lightly modified version of the BLE stack, that doesn't bring up a DFUService by default... as we have our own.

Fork of BLE_API by Bluetooth Low Energy

Revision:
260:ea7f9f14cc15
Parent:
253:097be53aea02
Child:
264:eea11cfb6753
diff -r a95264ad705c -r ea7f9f14cc15 public/GattCharacteristic.h
--- a/public/GattCharacteristic.h	Wed Jan 21 09:32:48 2015 +0000
+++ b/public/GattCharacteristic.h	Wed Jan 21 09:32:49 2015 +0000
@@ -1,434 +1,434 @@
-/* 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 __GATT_CHARACTERISTIC_H__
-#define __GATT_CHARACTERISTIC_H__
-
-#include "GattAttribute.h"
-#include "GattCharacteristicWriteCBParams.h"
-#include "FunctionPointerWithContext.h"
-
-class GattCharacteristic {
-public:
-    enum {
-        UUID_BATTERY_LEVEL_STATE_CHAR                     = 0x2A1B,
-        UUID_BATTERY_POWER_STATE_CHAR                     = 0x2A1A,
-        UUID_REMOVABLE_CHAR                               = 0x2A3A,
-        UUID_SERVICE_REQUIRED_CHAR                        = 0x2A3B,
-        UUID_ALERT_CATEGORY_ID_CHAR                       = 0x2A43,
-        UUID_ALERT_CATEGORY_ID_BIT_MASK_CHAR              = 0x2A42,
-        UUID_ALERT_LEVEL_CHAR                             = 0x2A06,
-        UUID_ALERT_NOTIFICATION_CONTROL_POINT_CHAR        = 0x2A44,
-        UUID_ALERT_STATUS_CHAR                            = 0x2A3F,
-        UUID_BATTERY_LEVEL_CHAR                           = 0x2A19,
-        UUID_BLOOD_PRESSURE_FEATURE_CHAR                  = 0x2A49,
-        UUID_BLOOD_PRESSURE_MEASUREMENT_CHAR              = 0x2A35,
-        UUID_BODY_SENSOR_LOCATION_CHAR                    = 0x2A38,
-        UUID_BOOT_KEYBOARD_INPUT_REPORT_CHAR              = 0x2A22,
-        UUID_BOOT_KEYBOARD_OUTPUT_REPORT_CHAR             = 0x2A32,
-        UUID_BOOT_MOUSE_INPUT_REPORT_CHAR                 = 0x2A33,
-        UUID_CURRENT_TIME_CHAR                            = 0x2A2B,
-        UUID_DATE_TIME_CHAR                               = 0x2A08,
-        UUID_DAY_DATE_TIME_CHAR                           = 0x2A0A,
-        UUID_DAY_OF_WEEK_CHAR                             = 0x2A09,
-        UUID_DST_OFFSET_CHAR                              = 0x2A0D,
-        UUID_EXACT_TIME_256_CHAR                          = 0x2A0C,
-        UUID_FIRMWARE_REVISION_STRING_CHAR                = 0x2A26,
-        UUID_GLUCOSE_FEATURE_CHAR                         = 0x2A51,
-        UUID_GLUCOSE_MEASUREMENT_CHAR                     = 0x2A18,
-        UUID_GLUCOSE_MEASUREMENT_CONTEXT_CHAR             = 0x2A34,
-        UUID_HARDWARE_REVISION_STRING_CHAR                = 0x2A27,
-        UUID_HEART_RATE_CONTROL_POINT_CHAR                = 0x2A39,
-        UUID_HEART_RATE_MEASUREMENT_CHAR                  = 0x2A37,
-        UUID_HID_CONTROL_POINT_CHAR                       = 0x2A4C,
-        UUID_HID_INFORMATION_CHAR                         = 0x2A4A,
-        UUID_IEEE_REGULATORY_CERTIFICATION_DATA_LIST_CHAR = 0x2A2A,
-        UUID_INTERMEDIATE_CUFF_PRESSURE_CHAR              = 0x2A36,
-        UUID_INTERMEDIATE_TEMPERATURE_CHAR                = 0x2A1E,
-        UUID_LOCAL_TIME_INFORMATION_CHAR                  = 0x2A0F,
-        UUID_MANUFACTURER_NAME_STRING_CHAR                = 0x2A29,
-        UUID_MEASUREMENT_INTERVAL_CHAR                    = 0x2A21,
-        UUID_MODEL_NUMBER_STRING_CHAR                     = 0x2A24,
-        UUID_UNREAD_ALERT_CHAR                            = 0x2A45,
-        UUID_NEW_ALERT_CHAR                               = 0x2A46,
-        UUID_PNP_ID_CHAR                                  = 0x2A50,
-        UUID_PROTOCOL_MODE_CHAR                           = 0x2A4E,
-        UUID_RECORD_ACCESS_CONTROL_POINT_CHAR             = 0x2A52,
-        UUID_REFERENCE_TIME_INFORMATION_CHAR              = 0x2A14,
-        UUID_REPORT_CHAR                                  = 0x2A4D,
-        UUID_REPORT_MAP_CHAR                              = 0x2A4B,
-        UUID_RINGER_CONTROL_POINT_CHAR                    = 0x2A40,
-        UUID_RINGER_SETTING_CHAR                          = 0x2A41,
-        UUID_SCAN_INTERVAL_WINDOW_CHAR                    = 0x2A4F,
-        UUID_SCAN_REFRESH_CHAR                            = 0x2A31,
-        UUID_SERIAL_NUMBER_STRING_CHAR                    = 0x2A25,
-        UUID_SOFTWARE_REVISION_STRING_CHAR                = 0x2A28,
-        UUID_SUPPORTED_NEW_ALERT_CATEGORY_CHAR            = 0x2A47,
-        UUID_SUPPORTED_UNREAD_ALERT_CATEGORY_CHAR         = 0x2A48,
-        UUID_SYSTEM_ID_CHAR                               = 0x2A23,
-        UUID_TEMPERATURE_MEASUREMENT_CHAR                 = 0x2A1C,
-        UUID_TEMPERATURE_TYPE_CHAR                        = 0x2A1D,
-        UUID_TIME_ACCURACY_CHAR                           = 0x2A12,
-        UUID_TIME_SOURCE_CHAR                             = 0x2A13,
-        UUID_TIME_UPDATE_CONTROL_POINT_CHAR               = 0x2A16,
-        UUID_TIME_UPDATE_STATE_CHAR                       = 0x2A17,
-        UUID_TIME_WITH_DST_CHAR                           = 0x2A11,
-        UUID_TIME_ZONE_CHAR                               = 0x2A0E,
-        UUID_TX_POWER_LEVEL_CHAR                          = 0x2A07,
-        UUID_CSC_FEATURE_CHAR                             = 0x2A5C,
-        UUID_CSC_MEASUREMENT_CHAR                         = 0x2A5B,
-        UUID_RSC_FEATURE_CHAR                             = 0x2A54,
-        UUID_RSC_MEASUREMENT_CHAR                         = 0x2A53,
-    };
-
-    /**************************************************************************/
-    /*!
-        \brief  Standard GATT characteristic presentation format unit types.
-                These unit types are used to describe what the raw numeric
-                data in a characteristic actually represents.
-
-        \note   See https://developer.bluetooth.org/gatt/units/Pages/default.aspx
-    */
-    /**************************************************************************/
-    typedef enum ble_gatt_unit_e {
-        BLE_GATT_UNIT_NONE                                                   = 0x2700,      /**< No specified unit type */
-        BLE_GATT_UNIT_LENGTH_METRE                                           = 0x2701,      /**< Length, Metre */
-        BLE_GATT_UNIT_MASS_KILOGRAM                                          = 0x2702,      /**< Mass, Kilogram */
-        BLE_GATT_UNIT_TIME_SECOND                                            = 0x2703,      /**< Time, Second */
-        BLE_GATT_UNIT_ELECTRIC_CURRENT_AMPERE                                = 0x2704,      /**< Electric Current, Ampere */
-        BLE_GATT_UNIT_THERMODYNAMIC_TEMPERATURE_KELVIN                       = 0x2705,      /**< Thermodynamic Temperature, Kelvin */
-        BLE_GATT_UNIT_AMOUNT_OF_SUBSTANCE_MOLE                               = 0x2706,      /**< Amount of Substance, Mole */
-        BLE_GATT_UNIT_LUMINOUS_INTENSITY_CANDELA                             = 0x2707,      /**< Luminous Intensity, Candela */
-        BLE_GATT_UNIT_AREA_SQUARE_METRES                                     = 0x2710,      /**< Area, Square Metres */
-        BLE_GATT_UNIT_VOLUME_CUBIC_METRES                                    = 0x2711,      /**< Volume, Cubic Metres*/
-        BLE_GATT_UNIT_VELOCITY_METRES_PER_SECOND                             = 0x2712,      /**< Velocity, Metres per Second*/
-        BLE_GATT_UNIT_ACCELERATION_METRES_PER_SECOND_SQUARED                 = 0x2713,      /**< Acceleration, Metres per Second Squared */
-        BLE_GATT_UNIT_WAVENUMBER_RECIPROCAL_METRE                            = 0x2714,      /**< Wave Number Reciprocal, Metre */
-        BLE_GATT_UNIT_DENSITY_KILOGRAM_PER_CUBIC_METRE                       = 0x2715,      /**< Density, Kilogram per Cubic Metre */
-        BLE_GATT_UNIT_SURFACE_DENSITY_KILOGRAM_PER_SQUARE_METRE              = 0x2716,      /**<  */
-        BLE_GATT_UNIT_SPECIFIC_VOLUME_CUBIC_METRE_PER_KILOGRAM               = 0x2717,      /**<  */
-        BLE_GATT_UNIT_CURRENT_DENSITY_AMPERE_PER_SQUARE_METRE                = 0x2718,      /**<  */
-        BLE_GATT_UNIT_MAGNETIC_FIELD_STRENGTH_AMPERE_PER_METRE               = 0x2719,      /**< Magnetic Field Strength, Ampere per Metre */
-        BLE_GATT_UNIT_AMOUNT_CONCENTRATION_MOLE_PER_CUBIC_METRE              = 0x271A,      /**<  */
-        BLE_GATT_UNIT_MASS_CONCENTRATION_KILOGRAM_PER_CUBIC_METRE            = 0x271B,      /**<  */
-        BLE_GATT_UNIT_LUMINANCE_CANDELA_PER_SQUARE_METRE                     = 0x271C,      /**<  */
-        BLE_GATT_UNIT_REFRACTIVE_INDEX                                       = 0x271D,      /**<  */
-        BLE_GATT_UNIT_RELATIVE_PERMEABILITY                                  = 0x271E,      /**<  */
-        BLE_GATT_UNIT_PLANE_ANGLE_RADIAN                                     = 0x2720,      /**<  */
-        BLE_GATT_UNIT_SOLID_ANGLE_STERADIAN                                  = 0x2721,      /**<  */
-        BLE_GATT_UNIT_FREQUENCY_HERTZ                                        = 0x2722,      /**< Frequency, Hertz */
-        BLE_GATT_UNIT_FORCE_NEWTON                                           = 0x2723,      /**< Force, Newton */
-        BLE_GATT_UNIT_PRESSURE_PASCAL                                        = 0x2724,      /**< Pressure, Pascal */
-        BLE_GATT_UNIT_ENERGY_JOULE                                           = 0x2725,      /**< Energy, Joule */
-        BLE_GATT_UNIT_POWER_WATT                                             = 0x2726,      /**< Power, Watt */
-        BLE_GATT_UNIT_ELECTRIC_CHARGE_COULOMB                                = 0x2727,      /**< Electrical Charge, Coulomb */
-        BLE_GATT_UNIT_ELECTRIC_POTENTIAL_DIFFERENCE_VOLT                     = 0x2728,      /**< Electrical Potential Difference, Voltage */
-        BLE_GATT_UNIT_CAPACITANCE_FARAD                                      = 0x2729,      /**<  */
-        BLE_GATT_UNIT_ELECTRIC_RESISTANCE_OHM                                = 0x272A,      /**<  */
-        BLE_GATT_UNIT_ELECTRIC_CONDUCTANCE_SIEMENS                           = 0x272B,      /**<  */
-        BLE_GATT_UNIT_MAGNETIC_FLEX_WEBER                                    = 0x272C,      /**<  */
-        BLE_GATT_UNIT_MAGNETIC_FLEX_DENSITY_TESLA                            = 0x272D,      /**<  */
-        BLE_GATT_UNIT_INDUCTANCE_HENRY                                       = 0x272E,      /**<  */
-        BLE_GATT_UNIT_THERMODYNAMIC_TEMPERATURE_DEGREE_CELSIUS               = 0x272F,      /**<  */
-        BLE_GATT_UNIT_LUMINOUS_FLUX_LUMEN                                    = 0x2730,      /**<  */
-        BLE_GATT_UNIT_ILLUMINANCE_LUX                                        = 0x2731,      /**<  */
-        BLE_GATT_UNIT_ACTIVITY_REFERRED_TO_A_RADIONUCLIDE_BECQUEREL          = 0x2732,      /**<  */
-        BLE_GATT_UNIT_ABSORBED_DOSE_GRAY                                     = 0x2733,      /**<  */
-        BLE_GATT_UNIT_DOSE_EQUIVALENT_SIEVERT                                = 0x2734,      /**<  */
-        BLE_GATT_UNIT_CATALYTIC_ACTIVITY_KATAL                               = 0x2735,      /**<  */
-        BLE_GATT_UNIT_DYNAMIC_VISCOSITY_PASCAL_SECOND                        = 0x2740,      /**<  */
-        BLE_GATT_UNIT_MOMENT_OF_FORCE_NEWTON_METRE                           = 0x2741,      /**<  */
-        BLE_GATT_UNIT_SURFACE_TENSION_NEWTON_PER_METRE                       = 0x2742,      /**<  */
-        BLE_GATT_UNIT_ANGULAR_VELOCITY_RADIAN_PER_SECOND                     = 0x2743,      /**<  */
-        BLE_GATT_UNIT_ANGULAR_ACCELERATION_RADIAN_PER_SECOND_SQUARED         = 0x2744,      /**<  */
-        BLE_GATT_UNIT_HEAT_FLUX_DENSITY_WATT_PER_SQUARE_METRE                = 0x2745,      /**<  */
-        BLE_GATT_UNIT_HEAT_CAPACITY_JOULE_PER_KELVIN                         = 0x2746,      /**<  */
-        BLE_GATT_UNIT_SPECIFIC_HEAT_CAPACITY_JOULE_PER_KILOGRAM_KELVIN       = 0x2747,      /**<  */
-        BLE_GATT_UNIT_SPECIFIC_ENERGY_JOULE_PER_KILOGRAM                     = 0x2748,      /**<  */
-        BLE_GATT_UNIT_THERMAL_CONDUCTIVITY_WATT_PER_METRE_KELVIN             = 0x2749,      /**<  */
-        BLE_GATT_UNIT_ENERGY_DENSITY_JOULE_PER_CUBIC_METRE                   = 0x274A,      /**<  */
-        BLE_GATT_UNIT_ELECTRIC_FIELD_STRENGTH_VOLT_PER_METRE                 = 0x274B,      /**<  */
-        BLE_GATT_UNIT_ELECTRIC_CHARGE_DENSITY_COULOMB_PER_CUBIC_METRE        = 0x274C,      /**<  */
-        BLE_GATT_UNIT_SURFACE_CHARGE_DENSITY_COULOMB_PER_SQUARE_METRE        = 0x274D,      /**<  */
-        BLE_GATT_UNIT_ELECTRIC_FLUX_DENSITY_COULOMB_PER_SQUARE_METRE         = 0x274E,      /**<  */
-        BLE_GATT_UNIT_PERMITTIVITY_FARAD_PER_METRE                           = 0x274F,      /**<  */
-        BLE_GATT_UNIT_PERMEABILITY_HENRY_PER_METRE                           = 0x2750,      /**<  */
-        BLE_GATT_UNIT_MOLAR_ENERGY_JOULE_PER_MOLE                            = 0x2751,      /**<  */
-        BLE_GATT_UNIT_MOLAR_ENTROPY_JOULE_PER_MOLE_KELVIN                    = 0x2752,      /**<  */
-        BLE_GATT_UNIT_EXPOSURE_COULOMB_PER_KILOGRAM                          = 0x2753,      /**<  */
-        BLE_GATT_UNIT_ABSORBED_DOSE_RATE_GRAY_PER_SECOND                     = 0x2754,      /**<  */
-        BLE_GATT_UNIT_RADIANT_INTENSITY_WATT_PER_STERADIAN                   = 0x2755,      /**<  */
-        BLE_GATT_UNIT_RADIANCE_WATT_PER_SQUARE_METRE_STERADIAN               = 0x2756,      /**<  */
-        BLE_GATT_UNIT_CATALYTIC_ACTIVITY_CONCENTRATION_KATAL_PER_CUBIC_METRE = 0x2757,      /**<  */
-        BLE_GATT_UNIT_TIME_MINUTE                                            = 0x2760,      /**< Time, Minute */
-        BLE_GATT_UNIT_TIME_HOUR                                              = 0x2761,      /**< Time, Hour */
-        BLE_GATT_UNIT_TIME_DAY                                               = 0x2762,      /**< Time, Day */
-        BLE_GATT_UNIT_PLANE_ANGLE_DEGREE                                     = 0x2763,      /**<  */
-        BLE_GATT_UNIT_PLANE_ANGLE_MINUTE                                     = 0x2764,      /**<  */
-        BLE_GATT_UNIT_PLANE_ANGLE_SECOND                                     = 0x2765,      /**<  */
-        BLE_GATT_UNIT_AREA_HECTARE                                           = 0x2766,      /**<  */
-        BLE_GATT_UNIT_VOLUME_LITRE                                           = 0x2767,      /**<  */
-        BLE_GATT_UNIT_MASS_TONNE                                             = 0x2768,      /**<  */
-        BLE_GATT_UNIT_PRESSURE_BAR                                           = 0x2780,      /**< Pressure, Bar */
-        BLE_GATT_UNIT_PRESSURE_MILLIMETRE_OF_MERCURY                         = 0x2781,      /**< Pressure, Millimetre of Mercury */
-        BLE_GATT_UNIT_LENGTH_ANGSTROM                                        = 0x2782,      /**<  */
-        BLE_GATT_UNIT_LENGTH_NAUTICAL_MILE                                   = 0x2783,      /**<  */
-        BLE_GATT_UNIT_AREA_BARN                                              = 0x2784,      /**<  */
-        BLE_GATT_UNIT_VELOCITY_KNOT                                          = 0x2785,      /**<  */
-        BLE_GATT_UNIT_LOGARITHMIC_RADIO_QUANTITY_NEPER                       = 0x2786,      /**<  */
-        BLE_GATT_UNIT_LOGARITHMIC_RADIO_QUANTITY_BEL                         = 0x2787,      /**<  */
-        BLE_GATT_UNIT_LENGTH_YARD                                            = 0x27A0,      /**< Length, Yard */
-        BLE_GATT_UNIT_LENGTH_PARSEC                                          = 0x27A1,      /**< Length, Parsec */
-        BLE_GATT_UNIT_LENGTH_INCH                                            = 0x27A2,      /**< Length, Inch */
-        BLE_GATT_UNIT_LENGTH_FOOT                                            = 0x27A3,      /**< Length, Foot */
-        BLE_GATT_UNIT_LENGTH_MILE                                            = 0x27A4,      /**< Length, Mile */
-        BLE_GATT_UNIT_PRESSURE_POUND_FORCE_PER_SQUARE_INCH                   = 0x27A5,      /**<  */
-        BLE_GATT_UNIT_VELOCITY_KILOMETRE_PER_HOUR                            = 0x27A6,      /**< Velocity, Kilometre per Hour */
-        BLE_GATT_UNIT_VELOCITY_MILE_PER_HOUR                                 = 0x27A7,      /**< Velocity, Mile per Hour */
-        BLE_GATT_UNIT_ANGULAR_VELOCITY_REVOLUTION_PER_MINUTE                 = 0x27A8,      /**< Angular Velocity, Revolution per Minute */
-        BLE_GATT_UNIT_ENERGY_GRAM_CALORIE                                    = 0x27A9,      /**< Energy, Gram Calorie */
-        BLE_GATT_UNIT_ENERGY_KILOGRAM_CALORIE                                = 0x27AA,      /**< Energy, Kilogram Calorie */
-        BLE_GATT_UNIT_ENERGY_KILOWATT_HOUR                                   = 0x27AB,      /**< Energy, Killowatt Hour */
-        BLE_GATT_UNIT_THERMODYNAMIC_TEMPERATURE_DEGREE_FAHRENHEIT            = 0x27AC,      /**<  */
-        BLE_GATT_UNIT_PERCENTAGE                                             = 0x27AD,      /**< Percentage */
-        BLE_GATT_UNIT_PER_MILLE                                              = 0x27AE,      /**<  */
-        BLE_GATT_UNIT_PERIOD_BEATS_PER_MINUTE                                = 0x27AF,      /**<  */
-        BLE_GATT_UNIT_ELECTRIC_CHARGE_AMPERE_HOURS                           = 0x27B0,      /**<  */
-        BLE_GATT_UNIT_MASS_DENSITY_MILLIGRAM_PER_DECILITRE                   = 0x27B1,      /**<  */
-        BLE_GATT_UNIT_MASS_DENSITY_MILLIMOLE_PER_LITRE                       = 0x27B2,      /**<  */
-        BLE_GATT_UNIT_TIME_YEAR                                              = 0x27B3,      /**< Time, Year */
-        BLE_GATT_UNIT_TIME_MONTH                                             = 0x27B4,      /**< Time, Month */
-        BLE_GATT_UNIT_CONCENTRATION_COUNT_PER_CUBIC_METRE                    = 0x27B5,      /**<  */
-        BLE_GATT_UNIT_IRRADIANCE_WATT_PER_SQUARE_METRE                       = 0x27B6       /**<  */
-    } ble_gatt_unit_t;
-
-    /**************************************************************************/
-    /*!
-        \brief  Standard GATT number types
-
-        \note   See Bluetooth Specification 4.0 (Vol. 3), Part G, Section 3.3.3.5.2
-        \note   See http://developer.bluetooth.org/gatt/descriptors/Pages/DescriptorViewer.aspx?u=org.bluetooth.descriptor.gatt.characteristic_presentation_format.xml
-    */
-    /**************************************************************************/
-    typedef enum ble_gatt_format_e {
-        BLE_GATT_FORMAT_RFU     = 0x00, /**< Reserved For Future Use. */
-        BLE_GATT_FORMAT_BOOLEAN = 0x01, /**< Boolean. */
-        BLE_GATT_FORMAT_2BIT    = 0x02, /**< Unsigned 2-bit integer. */
-        BLE_GATT_FORMAT_NIBBLE  = 0x03, /**< Unsigned 4-bit integer. */
-        BLE_GATT_FORMAT_UINT8   = 0x04, /**< Unsigned 8-bit integer. */
-        BLE_GATT_FORMAT_UINT12  = 0x05, /**< Unsigned 12-bit integer. */
-        BLE_GATT_FORMAT_UINT16  = 0x06, /**< Unsigned 16-bit integer. */
-        BLE_GATT_FORMAT_UINT24  = 0x07, /**< Unsigned 24-bit integer. */
-        BLE_GATT_FORMAT_UINT32  = 0x08, /**< Unsigned 32-bit integer. */
-        BLE_GATT_FORMAT_UINT48  = 0x09, /**< Unsigned 48-bit integer. */
-        BLE_GATT_FORMAT_UINT64  = 0x0A, /**< Unsigned 64-bit integer. */
-        BLE_GATT_FORMAT_UINT128 = 0x0B, /**< Unsigned 128-bit integer. */
-        BLE_GATT_FORMAT_SINT8   = 0x0C, /**< Signed 2-bit integer. */
-        BLE_GATT_FORMAT_SINT12  = 0x0D, /**< Signed 12-bit integer. */
-        BLE_GATT_FORMAT_SINT16  = 0x0E, /**< Signed 16-bit integer. */
-        BLE_GATT_FORMAT_SINT24  = 0x0F, /**< Signed 24-bit integer. */
-        BLE_GATT_FORMAT_SINT32  = 0x10, /**< Signed 32-bit integer. */
-        BLE_GATT_FORMAT_SINT48  = 0x11, /**< Signed 48-bit integer. */
-        BLE_GATT_FORMAT_SINT64  = 0x12, /**< Signed 64-bit integer. */
-        BLE_GATT_FORMAT_SINT128 = 0x13, /**< Signed 128-bit integer. */
-        BLE_GATT_FORMAT_FLOAT32 = 0x14, /**< IEEE-754 32-bit floating point. */
-        BLE_GATT_FORMAT_FLOAT64 = 0x15, /**< IEEE-754 64-bit floating point. */
-        BLE_GATT_FORMAT_SFLOAT  = 0x16, /**< IEEE-11073 16-bit SFLOAT. */
-        BLE_GATT_FORMAT_FLOAT   = 0x17, /**< IEEE-11073 32-bit FLOAT. */
-        BLE_GATT_FORMAT_DUINT16 = 0x18, /**< IEEE-20601 format. */
-        BLE_GATT_FORMAT_UTF8S   = 0x19, /**< UTF-8 string. */
-        BLE_GATT_FORMAT_UTF16S  = 0x1A, /**< UTF-16 string. */
-        BLE_GATT_FORMAT_STRUCT  = 0x1B  /**< Opaque Structure. */
-    } ble_gatt_format_t;
-
-    /**************************************************************************/
-    /*!
-        \brief  Standard GATT characteristic properties
-
-        \note   See Bluetooth Specification 4.0 (Vol. 3), Part G, Section 3.3.1.1
-                and Section 3.3.3.1 for Extended Properties
-    */
-    /**************************************************************************/
-    typedef enum ble_gatt_char_properties_e {
-        BLE_GATT_CHAR_PROPERTIES_NONE                        = 0x00,
-        BLE_GATT_CHAR_PROPERTIES_BROADCAST                   = 0x01, /**< Permits broadcasts of the Characteristic Value using Server Characteristic Configuration Descriptor. */
-        BLE_GATT_CHAR_PROPERTIES_READ                        = 0x02, /**< Permits reads of the Characteristic Value. */
-        BLE_GATT_CHAR_PROPERTIES_WRITE_WITHOUT_RESPONSE      = 0x04, /**< Permits writes of the Characteristic Value without response. */
-        BLE_GATT_CHAR_PROPERTIES_WRITE                       = 0x08, /**< Permits writes of the Characteristic Value with response. */
-        BLE_GATT_CHAR_PROPERTIES_NOTIFY                      = 0x10, /**< Permits notifications of a Characteristic Value without acknowledgment. */
-        BLE_GATT_CHAR_PROPERTIES_INDICATE                    = 0x20, /**< Permits indications of a Characteristic Value with acknowledgment. */
-        BLE_GATT_CHAR_PROPERTIES_AUTHENTICATED_SIGNED_WRITES = 0x40, /**< Permits signed writes to the Characteristic Value. */
-        BLE_GATT_CHAR_PROPERTIES_EXTENDED_PROPERTIES         = 0x80  /**< Additional characteristic properties are defined in the Characteristic Extended Properties Descriptor */
-    } ble_gatt_char_properties_t;
-
-    /**************************************************************************/
-    /*!
-        \brief  GATT presentation format wrapper
-
-        \note   See Bluetooth Specification 4.0 (Vol. 3), Part G, Section 3.3.3.5
-        \note   See https://developer.bluetooth.org/gatt/descriptors/Pages/DescriptorViewer.aspx?u=org.bluetooth.descriptor.gatt.characteristic_presentation_format.xml
-    */
-    /**************************************************************************/
-    typedef struct PresentationFormat {
-        uint8_t  gatt_format;    /**< Format of the value, see @ref ble_gatt_format_t. */
-        int8_t   exponent;       /**< Exponent for integer data types. Ex. if Exponent = -3 and the char value is 3892, the actual value is 3.892 */
-        uint16_t gatt_unit;      /**< UUID from Bluetooth Assigned Numbers, see @ref ble_gatt_unit_t. */
-        uint8_t  gatt_namespace; /**< Namespace from Bluetooth Assigned Numbers, normally '1',  see @ref BLE_GATT_CPF_NAMESPACES. */
-        uint16_t gatt_nsdesc;    /**< Namespace description from Bluetooth Assigned Numbers, normally '0', see @ref BLE_GATT_CPF_NAMESPACES. */
-    } presentation_format_t;
-
-    /**
-     *  @brief  Creates a new GattCharacteristic using the specified 16-bit
-     *          UUID, value length, and properties
-     *
-     *  @note   The UUID value must be unique in the service and is normally >1
-     *
-     *  @param[in]  uuid
-     *              The UUID to use for this characteristic
-     *  @param[in]  valuePtr
-     *              The memory holding the initial value. The value is copied
-     *              into the stack when the enclosing service is added; and
-     *              thereafter maintained internally by the stack.
-     *  @param[in]  initialLen
-     *              The min length in bytes of this characteristic's value
-     *  @param[in]  maxLen
-     *              The max length in bytes of this characteristic's value
-     *  @param[in]  props
-     *              The 8-bit bit field containing the characteristic's properties
-     *  @param[in]  descriptors
-     *              A pointer to an array of descriptors to be included within this characteristic
-     *  @param[in]  numDescriptors
-     *              The number of descriptors
-     *  @param[in]  writeAuthorizationIn
-     *              Do the attribute(s) of this characteristic have write
-     *              authorization enabled? if so, Write Authorization will be
-     *              requested from the application on every write request
-     *              operation (but not write command).
-     *
-     * @NOTE: If valuePtr == NULL, initialLength == 0, and properties == READ
-     *        for the value attribute of a characteristic, then that particular
-     *        characteristic may be considered optional and dropped while
-     *        instantiating the service with the underlying BLE stack.
-     */
-    GattCharacteristic(const UUID    &uuid,
-                       uint8_t       *valuePtr            = NULL,
-                       uint16_t       initialLen          = 0,
-                       uint16_t       maxLen              = 0,
-                       uint8_t        props               = BLE_GATT_CHAR_PROPERTIES_NONE,
-                       GattAttribute *descriptors[]       = NULL,
-                       unsigned       numDescriptors      = 0) :
-        _valueAttribute(uuid, valuePtr, initialLen, maxLen),
-        _properties(props),
-        _descriptors(descriptors),
-        _descriptorCount(numDescriptors),
-        enabledReadAuthorization(false),
-        enabledWriteAuthorization(false),
-        readAuthorizationCallback(),
-        writeAuthorizationCallback() {
-        /* empty */
-    }
-
-    /**
-     * Authorization.
-     */
-public:
-    void setWriteAuthorizationCallback(void (*callback)(GattCharacteristicWriteAuthCBParams *)) {
-        writeAuthorizationCallback.attach(callback);
-        enabledWriteAuthorization = true;
-    }
-    template <typename T>
-    void setWriteAuthorizationCallback(T *object, void (T::*member)(GattCharacteristicWriteAuthCBParams *)) {
-        writeAuthorizationCallback.attach(object, member);
-        enabledWriteAuthorization = true;
-    }
-    void setReadAuthorizationCallback(void (*callback)(GattCharacteristicReadAuthCBParams *)) {
-        readAuthorizationCallback.attach(callback);
-        enabledReadAuthorization = true;
-    }
-    template <typename T>
-    void setReadAuthorizationCallback(T *object, void (T::*member)(GattCharacteristicReadAuthCBParams *)) {
-        readAuthorizationCallback.attach(object, member);
-        enabledReadAuthorization = true;
-    }
-
-    /**
-     * Helper function meant to be called from the guts of the BLE stack to
-     * determine the authorization reply for a write request.
-     * @param  params to capture the context of the write-auth request; and also contains an out-parameter for reply.
-     * @return        true if the write is authorized to proceed.
-     */
-    bool authorizeWrite(GattCharacteristicWriteAuthCBParams *params) {
-        if (!isWriteAuthorizationEnabled()) {
-            return true;
-        }
-
-        params->authorizationReply = true; /* initialized to true by default */
-        writeAuthorizationCallback.call(params);
-        return params->authorizationReply;
-    }
-
-    /**
-     * Helper function meant to be called from the guts of the BLE stack to
-     * determine the authorization reply for a read request.
-     * @param  params to capture the context of the read-auth request; and also contains an out-parameter for reply.
-     * @return        true if the read is authorized to proceed.
-     */
-    bool authorizeRead(GattCharacteristicReadAuthCBParams *params) {
-        if (!isReadAuthorizationEnabled()) {
-            return true;
-        }
-
-        params->authorizationReply = true; /* initialized to true by default */
-        readAuthorizationCallback.call(params);
-        return params->authorizationReply;
-    }
-
-    /* accessors */
-public:
-    GattAttribute&          getValueAttribute()                 {return _valueAttribute;                }
-    const GattAttribute&    getValueAttribute()           const {return _valueAttribute;                }
-    GattAttribute::Handle_t getValueHandle(void)          const {return getValueAttribute().getHandle();}
-    uint8_t                 getProperties(void)           const {return _properties;                    }
-    uint8_t                 getDescriptorCount(void)      const {return _descriptorCount;               }
-    bool                    isReadAuthorizationEnabled()  const {return enabledReadAuthorization;       }
-    bool                    isWriteAuthorizationEnabled() const {return enabledWriteAuthorization;      }
-
-    GattAttribute *getDescriptor(uint8_t index) {
-        if (index >= _descriptorCount) {
-            return NULL;
-        }
-
-        return _descriptors[index];
-    }
-
-private:
-    GattAttribute   _valueAttribute;
-    uint8_t         _properties;
-    GattAttribute **_descriptors;
-    uint8_t         _descriptorCount;
-
-    bool            enabledReadAuthorization;
-    bool            enabledWriteAuthorization;
-    FunctionPointerWithContext<GattCharacteristicReadAuthCBParams *>  readAuthorizationCallback;
-    FunctionPointerWithContext<GattCharacteristicWriteAuthCBParams *> writeAuthorizationCallback;
-
-private:
-    /* disallow copy and assignment */
-    GattCharacteristic(const GattCharacteristic &);
-    GattCharacteristic& operator=(const GattCharacteristic &);
-};
-
-#endif // ifndef __GATT_CHARACTERISTIC_H__
\ No newline at end of file
+/* 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 __GATT_CHARACTERISTIC_H__
+#define __GATT_CHARACTERISTIC_H__
+
+#include "GattAttribute.h"
+#include "GattCharacteristicWriteCBParams.h"
+#include "FunctionPointerWithContext.h"
+
+class GattCharacteristic {
+public:
+    enum {
+        UUID_BATTERY_LEVEL_STATE_CHAR                     = 0x2A1B,
+        UUID_BATTERY_POWER_STATE_CHAR                     = 0x2A1A,
+        UUID_REMOVABLE_CHAR                               = 0x2A3A,
+        UUID_SERVICE_REQUIRED_CHAR                        = 0x2A3B,
+        UUID_ALERT_CATEGORY_ID_CHAR                       = 0x2A43,
+        UUID_ALERT_CATEGORY_ID_BIT_MASK_CHAR              = 0x2A42,
+        UUID_ALERT_LEVEL_CHAR                             = 0x2A06,
+        UUID_ALERT_NOTIFICATION_CONTROL_POINT_CHAR        = 0x2A44,
+        UUID_ALERT_STATUS_CHAR                            = 0x2A3F,
+        UUID_BATTERY_LEVEL_CHAR                           = 0x2A19,
+        UUID_BLOOD_PRESSURE_FEATURE_CHAR                  = 0x2A49,
+        UUID_BLOOD_PRESSURE_MEASUREMENT_CHAR              = 0x2A35,
+        UUID_BODY_SENSOR_LOCATION_CHAR                    = 0x2A38,
+        UUID_BOOT_KEYBOARD_INPUT_REPORT_CHAR              = 0x2A22,
+        UUID_BOOT_KEYBOARD_OUTPUT_REPORT_CHAR             = 0x2A32,
+        UUID_BOOT_MOUSE_INPUT_REPORT_CHAR                 = 0x2A33,
+        UUID_CURRENT_TIME_CHAR                            = 0x2A2B,
+        UUID_DATE_TIME_CHAR                               = 0x2A08,
+        UUID_DAY_DATE_TIME_CHAR                           = 0x2A0A,
+        UUID_DAY_OF_WEEK_CHAR                             = 0x2A09,
+        UUID_DST_OFFSET_CHAR                              = 0x2A0D,
+        UUID_EXACT_TIME_256_CHAR                          = 0x2A0C,
+        UUID_FIRMWARE_REVISION_STRING_CHAR                = 0x2A26,
+        UUID_GLUCOSE_FEATURE_CHAR                         = 0x2A51,
+        UUID_GLUCOSE_MEASUREMENT_CHAR                     = 0x2A18,
+        UUID_GLUCOSE_MEASUREMENT_CONTEXT_CHAR             = 0x2A34,
+        UUID_HARDWARE_REVISION_STRING_CHAR                = 0x2A27,
+        UUID_HEART_RATE_CONTROL_POINT_CHAR                = 0x2A39,
+        UUID_HEART_RATE_MEASUREMENT_CHAR                  = 0x2A37,
+        UUID_HID_CONTROL_POINT_CHAR                       = 0x2A4C,
+        UUID_HID_INFORMATION_CHAR                         = 0x2A4A,
+        UUID_IEEE_REGULATORY_CERTIFICATION_DATA_LIST_CHAR = 0x2A2A,
+        UUID_INTERMEDIATE_CUFF_PRESSURE_CHAR              = 0x2A36,
+        UUID_INTERMEDIATE_TEMPERATURE_CHAR                = 0x2A1E,
+        UUID_LOCAL_TIME_INFORMATION_CHAR                  = 0x2A0F,
+        UUID_MANUFACTURER_NAME_STRING_CHAR                = 0x2A29,
+        UUID_MEASUREMENT_INTERVAL_CHAR                    = 0x2A21,
+        UUID_MODEL_NUMBER_STRING_CHAR                     = 0x2A24,
+        UUID_UNREAD_ALERT_CHAR                            = 0x2A45,
+        UUID_NEW_ALERT_CHAR                               = 0x2A46,
+        UUID_PNP_ID_CHAR                                  = 0x2A50,
+        UUID_PROTOCOL_MODE_CHAR                           = 0x2A4E,
+        UUID_RECORD_ACCESS_CONTROL_POINT_CHAR             = 0x2A52,
+        UUID_REFERENCE_TIME_INFORMATION_CHAR              = 0x2A14,
+        UUID_REPORT_CHAR                                  = 0x2A4D,
+        UUID_REPORT_MAP_CHAR                              = 0x2A4B,
+        UUID_RINGER_CONTROL_POINT_CHAR                    = 0x2A40,
+        UUID_RINGER_SETTING_CHAR                          = 0x2A41,
+        UUID_SCAN_INTERVAL_WINDOW_CHAR                    = 0x2A4F,
+        UUID_SCAN_REFRESH_CHAR                            = 0x2A31,
+        UUID_SERIAL_NUMBER_STRING_CHAR                    = 0x2A25,
+        UUID_SOFTWARE_REVISION_STRING_CHAR                = 0x2A28,
+        UUID_SUPPORTED_NEW_ALERT_CATEGORY_CHAR            = 0x2A47,
+        UUID_SUPPORTED_UNREAD_ALERT_CATEGORY_CHAR         = 0x2A48,
+        UUID_SYSTEM_ID_CHAR                               = 0x2A23,
+        UUID_TEMPERATURE_MEASUREMENT_CHAR                 = 0x2A1C,
+        UUID_TEMPERATURE_TYPE_CHAR                        = 0x2A1D,
+        UUID_TIME_ACCURACY_CHAR                           = 0x2A12,
+        UUID_TIME_SOURCE_CHAR                             = 0x2A13,
+        UUID_TIME_UPDATE_CONTROL_POINT_CHAR               = 0x2A16,
+        UUID_TIME_UPDATE_STATE_CHAR                       = 0x2A17,
+        UUID_TIME_WITH_DST_CHAR                           = 0x2A11,
+        UUID_TIME_ZONE_CHAR                               = 0x2A0E,
+        UUID_TX_POWER_LEVEL_CHAR                          = 0x2A07,
+        UUID_CSC_FEATURE_CHAR                             = 0x2A5C,
+        UUID_CSC_MEASUREMENT_CHAR                         = 0x2A5B,
+        UUID_RSC_FEATURE_CHAR                             = 0x2A54,
+        UUID_RSC_MEASUREMENT_CHAR                         = 0x2A53,
+    };
+
+    /**************************************************************************/
+    /*!
+        \brief  Standard GATT characteristic presentation format unit types.
+                These unit types are used to describe what the raw numeric
+                data in a characteristic actually represents.
+
+        \note   See https://developer.bluetooth.org/gatt/units/Pages/default.aspx
+    */
+    /**************************************************************************/
+    typedef enum ble_gatt_unit_e {
+        BLE_GATT_UNIT_NONE                                                   = 0x2700,      /**< No specified unit type */
+        BLE_GATT_UNIT_LENGTH_METRE                                           = 0x2701,      /**< Length, Metre */
+        BLE_GATT_UNIT_MASS_KILOGRAM                                          = 0x2702,      /**< Mass, Kilogram */
+        BLE_GATT_UNIT_TIME_SECOND                                            = 0x2703,      /**< Time, Second */
+        BLE_GATT_UNIT_ELECTRIC_CURRENT_AMPERE                                = 0x2704,      /**< Electric Current, Ampere */
+        BLE_GATT_UNIT_THERMODYNAMIC_TEMPERATURE_KELVIN                       = 0x2705,      /**< Thermodynamic Temperature, Kelvin */
+        BLE_GATT_UNIT_AMOUNT_OF_SUBSTANCE_MOLE                               = 0x2706,      /**< Amount of Substance, Mole */
+        BLE_GATT_UNIT_LUMINOUS_INTENSITY_CANDELA                             = 0x2707,      /**< Luminous Intensity, Candela */
+        BLE_GATT_UNIT_AREA_SQUARE_METRES                                     = 0x2710,      /**< Area, Square Metres */
+        BLE_GATT_UNIT_VOLUME_CUBIC_METRES                                    = 0x2711,      /**< Volume, Cubic Metres*/
+        BLE_GATT_UNIT_VELOCITY_METRES_PER_SECOND                             = 0x2712,      /**< Velocity, Metres per Second*/
+        BLE_GATT_UNIT_ACCELERATION_METRES_PER_SECOND_SQUARED                 = 0x2713,      /**< Acceleration, Metres per Second Squared */
+        BLE_GATT_UNIT_WAVENUMBER_RECIPROCAL_METRE                            = 0x2714,      /**< Wave Number Reciprocal, Metre */
+        BLE_GATT_UNIT_DENSITY_KILOGRAM_PER_CUBIC_METRE                       = 0x2715,      /**< Density, Kilogram per Cubic Metre */
+        BLE_GATT_UNIT_SURFACE_DENSITY_KILOGRAM_PER_SQUARE_METRE              = 0x2716,      /**<  */
+        BLE_GATT_UNIT_SPECIFIC_VOLUME_CUBIC_METRE_PER_KILOGRAM               = 0x2717,      /**<  */
+        BLE_GATT_UNIT_CURRENT_DENSITY_AMPERE_PER_SQUARE_METRE                = 0x2718,      /**<  */
+        BLE_GATT_UNIT_MAGNETIC_FIELD_STRENGTH_AMPERE_PER_METRE               = 0x2719,      /**< Magnetic Field Strength, Ampere per Metre */
+        BLE_GATT_UNIT_AMOUNT_CONCENTRATION_MOLE_PER_CUBIC_METRE              = 0x271A,      /**<  */
+        BLE_GATT_UNIT_MASS_CONCENTRATION_KILOGRAM_PER_CUBIC_METRE            = 0x271B,      /**<  */
+        BLE_GATT_UNIT_LUMINANCE_CANDELA_PER_SQUARE_METRE                     = 0x271C,      /**<  */
+        BLE_GATT_UNIT_REFRACTIVE_INDEX                                       = 0x271D,      /**<  */
+        BLE_GATT_UNIT_RELATIVE_PERMEABILITY                                  = 0x271E,      /**<  */
+        BLE_GATT_UNIT_PLANE_ANGLE_RADIAN                                     = 0x2720,      /**<  */
+        BLE_GATT_UNIT_SOLID_ANGLE_STERADIAN                                  = 0x2721,      /**<  */
+        BLE_GATT_UNIT_FREQUENCY_HERTZ                                        = 0x2722,      /**< Frequency, Hertz */
+        BLE_GATT_UNIT_FORCE_NEWTON                                           = 0x2723,      /**< Force, Newton */
+        BLE_GATT_UNIT_PRESSURE_PASCAL                                        = 0x2724,      /**< Pressure, Pascal */
+        BLE_GATT_UNIT_ENERGY_JOULE                                           = 0x2725,      /**< Energy, Joule */
+        BLE_GATT_UNIT_POWER_WATT                                             = 0x2726,      /**< Power, Watt */
+        BLE_GATT_UNIT_ELECTRIC_CHARGE_COULOMB                                = 0x2727,      /**< Electrical Charge, Coulomb */
+        BLE_GATT_UNIT_ELECTRIC_POTENTIAL_DIFFERENCE_VOLT                     = 0x2728,      /**< Electrical Potential Difference, Voltage */
+        BLE_GATT_UNIT_CAPACITANCE_FARAD                                      = 0x2729,      /**<  */
+        BLE_GATT_UNIT_ELECTRIC_RESISTANCE_OHM                                = 0x272A,      /**<  */
+        BLE_GATT_UNIT_ELECTRIC_CONDUCTANCE_SIEMENS                           = 0x272B,      /**<  */
+        BLE_GATT_UNIT_MAGNETIC_FLEX_WEBER                                    = 0x272C,      /**<  */
+        BLE_GATT_UNIT_MAGNETIC_FLEX_DENSITY_TESLA                            = 0x272D,      /**<  */
+        BLE_GATT_UNIT_INDUCTANCE_HENRY                                       = 0x272E,      /**<  */
+        BLE_GATT_UNIT_THERMODYNAMIC_TEMPERATURE_DEGREE_CELSIUS               = 0x272F,      /**<  */
+        BLE_GATT_UNIT_LUMINOUS_FLUX_LUMEN                                    = 0x2730,      /**<  */
+        BLE_GATT_UNIT_ILLUMINANCE_LUX                                        = 0x2731,      /**<  */
+        BLE_GATT_UNIT_ACTIVITY_REFERRED_TO_A_RADIONUCLIDE_BECQUEREL          = 0x2732,      /**<  */
+        BLE_GATT_UNIT_ABSORBED_DOSE_GRAY                                     = 0x2733,      /**<  */
+        BLE_GATT_UNIT_DOSE_EQUIVALENT_SIEVERT                                = 0x2734,      /**<  */
+        BLE_GATT_UNIT_CATALYTIC_ACTIVITY_KATAL                               = 0x2735,      /**<  */
+        BLE_GATT_UNIT_DYNAMIC_VISCOSITY_PASCAL_SECOND                        = 0x2740,      /**<  */
+        BLE_GATT_UNIT_MOMENT_OF_FORCE_NEWTON_METRE                           = 0x2741,      /**<  */
+        BLE_GATT_UNIT_SURFACE_TENSION_NEWTON_PER_METRE                       = 0x2742,      /**<  */
+        BLE_GATT_UNIT_ANGULAR_VELOCITY_RADIAN_PER_SECOND                     = 0x2743,      /**<  */
+        BLE_GATT_UNIT_ANGULAR_ACCELERATION_RADIAN_PER_SECOND_SQUARED         = 0x2744,      /**<  */
+        BLE_GATT_UNIT_HEAT_FLUX_DENSITY_WATT_PER_SQUARE_METRE                = 0x2745,      /**<  */
+        BLE_GATT_UNIT_HEAT_CAPACITY_JOULE_PER_KELVIN                         = 0x2746,      /**<  */
+        BLE_GATT_UNIT_SPECIFIC_HEAT_CAPACITY_JOULE_PER_KILOGRAM_KELVIN       = 0x2747,      /**<  */
+        BLE_GATT_UNIT_SPECIFIC_ENERGY_JOULE_PER_KILOGRAM                     = 0x2748,      /**<  */
+        BLE_GATT_UNIT_THERMAL_CONDUCTIVITY_WATT_PER_METRE_KELVIN             = 0x2749,      /**<  */
+        BLE_GATT_UNIT_ENERGY_DENSITY_JOULE_PER_CUBIC_METRE                   = 0x274A,      /**<  */
+        BLE_GATT_UNIT_ELECTRIC_FIELD_STRENGTH_VOLT_PER_METRE                 = 0x274B,      /**<  */
+        BLE_GATT_UNIT_ELECTRIC_CHARGE_DENSITY_COULOMB_PER_CUBIC_METRE        = 0x274C,      /**<  */
+        BLE_GATT_UNIT_SURFACE_CHARGE_DENSITY_COULOMB_PER_SQUARE_METRE        = 0x274D,      /**<  */
+        BLE_GATT_UNIT_ELECTRIC_FLUX_DENSITY_COULOMB_PER_SQUARE_METRE         = 0x274E,      /**<  */
+        BLE_GATT_UNIT_PERMITTIVITY_FARAD_PER_METRE                           = 0x274F,      /**<  */
+        BLE_GATT_UNIT_PERMEABILITY_HENRY_PER_METRE                           = 0x2750,      /**<  */
+        BLE_GATT_UNIT_MOLAR_ENERGY_JOULE_PER_MOLE                            = 0x2751,      /**<  */
+        BLE_GATT_UNIT_MOLAR_ENTROPY_JOULE_PER_MOLE_KELVIN                    = 0x2752,      /**<  */
+        BLE_GATT_UNIT_EXPOSURE_COULOMB_PER_KILOGRAM                          = 0x2753,      /**<  */
+        BLE_GATT_UNIT_ABSORBED_DOSE_RATE_GRAY_PER_SECOND                     = 0x2754,      /**<  */
+        BLE_GATT_UNIT_RADIANT_INTENSITY_WATT_PER_STERADIAN                   = 0x2755,      /**<  */
+        BLE_GATT_UNIT_RADIANCE_WATT_PER_SQUARE_METRE_STERADIAN               = 0x2756,      /**<  */
+        BLE_GATT_UNIT_CATALYTIC_ACTIVITY_CONCENTRATION_KATAL_PER_CUBIC_METRE = 0x2757,      /**<  */
+        BLE_GATT_UNIT_TIME_MINUTE                                            = 0x2760,      /**< Time, Minute */
+        BLE_GATT_UNIT_TIME_HOUR                                              = 0x2761,      /**< Time, Hour */
+        BLE_GATT_UNIT_TIME_DAY                                               = 0x2762,      /**< Time, Day */
+        BLE_GATT_UNIT_PLANE_ANGLE_DEGREE                                     = 0x2763,      /**<  */
+        BLE_GATT_UNIT_PLANE_ANGLE_MINUTE                                     = 0x2764,      /**<  */
+        BLE_GATT_UNIT_PLANE_ANGLE_SECOND                                     = 0x2765,      /**<  */
+        BLE_GATT_UNIT_AREA_HECTARE                                           = 0x2766,      /**<  */
+        BLE_GATT_UNIT_VOLUME_LITRE                                           = 0x2767,      /**<  */
+        BLE_GATT_UNIT_MASS_TONNE                                             = 0x2768,      /**<  */
+        BLE_GATT_UNIT_PRESSURE_BAR                                           = 0x2780,      /**< Pressure, Bar */
+        BLE_GATT_UNIT_PRESSURE_MILLIMETRE_OF_MERCURY                         = 0x2781,      /**< Pressure, Millimetre of Mercury */
+        BLE_GATT_UNIT_LENGTH_ANGSTROM                                        = 0x2782,      /**<  */
+        BLE_GATT_UNIT_LENGTH_NAUTICAL_MILE                                   = 0x2783,      /**<  */
+        BLE_GATT_UNIT_AREA_BARN                                              = 0x2784,      /**<  */
+        BLE_GATT_UNIT_VELOCITY_KNOT                                          = 0x2785,      /**<  */
+        BLE_GATT_UNIT_LOGARITHMIC_RADIO_QUANTITY_NEPER                       = 0x2786,      /**<  */
+        BLE_GATT_UNIT_LOGARITHMIC_RADIO_QUANTITY_BEL                         = 0x2787,      /**<  */
+        BLE_GATT_UNIT_LENGTH_YARD                                            = 0x27A0,      /**< Length, Yard */
+        BLE_GATT_UNIT_LENGTH_PARSEC                                          = 0x27A1,      /**< Length, Parsec */
+        BLE_GATT_UNIT_LENGTH_INCH                                            = 0x27A2,      /**< Length, Inch */
+        BLE_GATT_UNIT_LENGTH_FOOT                                            = 0x27A3,      /**< Length, Foot */
+        BLE_GATT_UNIT_LENGTH_MILE                                            = 0x27A4,      /**< Length, Mile */
+        BLE_GATT_UNIT_PRESSURE_POUND_FORCE_PER_SQUARE_INCH                   = 0x27A5,      /**<  */
+        BLE_GATT_UNIT_VELOCITY_KILOMETRE_PER_HOUR                            = 0x27A6,      /**< Velocity, Kilometre per Hour */
+        BLE_GATT_UNIT_VELOCITY_MILE_PER_HOUR                                 = 0x27A7,      /**< Velocity, Mile per Hour */
+        BLE_GATT_UNIT_ANGULAR_VELOCITY_REVOLUTION_PER_MINUTE                 = 0x27A8,      /**< Angular Velocity, Revolution per Minute */
+        BLE_GATT_UNIT_ENERGY_GRAM_CALORIE                                    = 0x27A9,      /**< Energy, Gram Calorie */
+        BLE_GATT_UNIT_ENERGY_KILOGRAM_CALORIE                                = 0x27AA,      /**< Energy, Kilogram Calorie */
+        BLE_GATT_UNIT_ENERGY_KILOWATT_HOUR                                   = 0x27AB,      /**< Energy, Killowatt Hour */
+        BLE_GATT_UNIT_THERMODYNAMIC_TEMPERATURE_DEGREE_FAHRENHEIT            = 0x27AC,      /**<  */
+        BLE_GATT_UNIT_PERCENTAGE                                             = 0x27AD,      /**< Percentage */
+        BLE_GATT_UNIT_PER_MILLE                                              = 0x27AE,      /**<  */
+        BLE_GATT_UNIT_PERIOD_BEATS_PER_MINUTE                                = 0x27AF,      /**<  */
+        BLE_GATT_UNIT_ELECTRIC_CHARGE_AMPERE_HOURS                           = 0x27B0,      /**<  */
+        BLE_GATT_UNIT_MASS_DENSITY_MILLIGRAM_PER_DECILITRE                   = 0x27B1,      /**<  */
+        BLE_GATT_UNIT_MASS_DENSITY_MILLIMOLE_PER_LITRE                       = 0x27B2,      /**<  */
+        BLE_GATT_UNIT_TIME_YEAR                                              = 0x27B3,      /**< Time, Year */
+        BLE_GATT_UNIT_TIME_MONTH                                             = 0x27B4,      /**< Time, Month */
+        BLE_GATT_UNIT_CONCENTRATION_COUNT_PER_CUBIC_METRE                    = 0x27B5,      /**<  */
+        BLE_GATT_UNIT_IRRADIANCE_WATT_PER_SQUARE_METRE                       = 0x27B6       /**<  */
+    } ble_gatt_unit_t;
+
+    /**************************************************************************/
+    /*!
+        \brief  Standard GATT number types
+
+        \note   See Bluetooth Specification 4.0 (Vol. 3), Part G, Section 3.3.3.5.2
+        \note   See http://developer.bluetooth.org/gatt/descriptors/Pages/DescriptorViewer.aspx?u=org.bluetooth.descriptor.gatt.characteristic_presentation_format.xml
+    */
+    /**************************************************************************/
+    typedef enum ble_gatt_format_e {
+        BLE_GATT_FORMAT_RFU     = 0x00, /**< Reserved For Future Use. */
+        BLE_GATT_FORMAT_BOOLEAN = 0x01, /**< Boolean. */
+        BLE_GATT_FORMAT_2BIT    = 0x02, /**< Unsigned 2-bit integer. */
+        BLE_GATT_FORMAT_NIBBLE  = 0x03, /**< Unsigned 4-bit integer. */
+        BLE_GATT_FORMAT_UINT8   = 0x04, /**< Unsigned 8-bit integer. */
+        BLE_GATT_FORMAT_UINT12  = 0x05, /**< Unsigned 12-bit integer. */
+        BLE_GATT_FORMAT_UINT16  = 0x06, /**< Unsigned 16-bit integer. */
+        BLE_GATT_FORMAT_UINT24  = 0x07, /**< Unsigned 24-bit integer. */
+        BLE_GATT_FORMAT_UINT32  = 0x08, /**< Unsigned 32-bit integer. */
+        BLE_GATT_FORMAT_UINT48  = 0x09, /**< Unsigned 48-bit integer. */
+        BLE_GATT_FORMAT_UINT64  = 0x0A, /**< Unsigned 64-bit integer. */
+        BLE_GATT_FORMAT_UINT128 = 0x0B, /**< Unsigned 128-bit integer. */
+        BLE_GATT_FORMAT_SINT8   = 0x0C, /**< Signed 2-bit integer. */
+        BLE_GATT_FORMAT_SINT12  = 0x0D, /**< Signed 12-bit integer. */
+        BLE_GATT_FORMAT_SINT16  = 0x0E, /**< Signed 16-bit integer. */
+        BLE_GATT_FORMAT_SINT24  = 0x0F, /**< Signed 24-bit integer. */
+        BLE_GATT_FORMAT_SINT32  = 0x10, /**< Signed 32-bit integer. */
+        BLE_GATT_FORMAT_SINT48  = 0x11, /**< Signed 48-bit integer. */
+        BLE_GATT_FORMAT_SINT64  = 0x12, /**< Signed 64-bit integer. */
+        BLE_GATT_FORMAT_SINT128 = 0x13, /**< Signed 128-bit integer. */
+        BLE_GATT_FORMAT_FLOAT32 = 0x14, /**< IEEE-754 32-bit floating point. */
+        BLE_GATT_FORMAT_FLOAT64 = 0x15, /**< IEEE-754 64-bit floating point. */
+        BLE_GATT_FORMAT_SFLOAT  = 0x16, /**< IEEE-11073 16-bit SFLOAT. */
+        BLE_GATT_FORMAT_FLOAT   = 0x17, /**< IEEE-11073 32-bit FLOAT. */
+        BLE_GATT_FORMAT_DUINT16 = 0x18, /**< IEEE-20601 format. */
+        BLE_GATT_FORMAT_UTF8S   = 0x19, /**< UTF-8 string. */
+        BLE_GATT_FORMAT_UTF16S  = 0x1A, /**< UTF-16 string. */
+        BLE_GATT_FORMAT_STRUCT  = 0x1B  /**< Opaque Structure. */
+    } ble_gatt_format_t;
+
+    /**************************************************************************/
+    /*!
+        \brief  Standard GATT characteristic properties
+
+        \note   See Bluetooth Specification 4.0 (Vol. 3), Part G, Section 3.3.1.1
+                and Section 3.3.3.1 for Extended Properties
+    */
+    /**************************************************************************/
+    typedef enum ble_gatt_char_properties_e {
+        BLE_GATT_CHAR_PROPERTIES_NONE                        = 0x00,
+        BLE_GATT_CHAR_PROPERTIES_BROADCAST                   = 0x01, /**< Permits broadcasts of the Characteristic Value using Server Characteristic Configuration Descriptor. */
+        BLE_GATT_CHAR_PROPERTIES_READ                        = 0x02, /**< Permits reads of the Characteristic Value. */
+        BLE_GATT_CHAR_PROPERTIES_WRITE_WITHOUT_RESPONSE      = 0x04, /**< Permits writes of the Characteristic Value without response. */
+        BLE_GATT_CHAR_PROPERTIES_WRITE                       = 0x08, /**< Permits writes of the Characteristic Value with response. */
+        BLE_GATT_CHAR_PROPERTIES_NOTIFY                      = 0x10, /**< Permits notifications of a Characteristic Value without acknowledgment. */
+        BLE_GATT_CHAR_PROPERTIES_INDICATE                    = 0x20, /**< Permits indications of a Characteristic Value with acknowledgment. */
+        BLE_GATT_CHAR_PROPERTIES_AUTHENTICATED_SIGNED_WRITES = 0x40, /**< Permits signed writes to the Characteristic Value. */
+        BLE_GATT_CHAR_PROPERTIES_EXTENDED_PROPERTIES         = 0x80  /**< Additional characteristic properties are defined in the Characteristic Extended Properties Descriptor */
+    } ble_gatt_char_properties_t;
+
+    /**************************************************************************/
+    /*!
+        \brief  GATT presentation format wrapper
+
+        \note   See Bluetooth Specification 4.0 (Vol. 3), Part G, Section 3.3.3.5
+        \note   See https://developer.bluetooth.org/gatt/descriptors/Pages/DescriptorViewer.aspx?u=org.bluetooth.descriptor.gatt.characteristic_presentation_format.xml
+    */
+    /**************************************************************************/
+    typedef struct PresentationFormat {
+        uint8_t  gatt_format;    /**< Format of the value, see @ref ble_gatt_format_t. */
+        int8_t   exponent;       /**< Exponent for integer data types. Ex. if Exponent = -3 and the char value is 3892, the actual value is 3.892 */
+        uint16_t gatt_unit;      /**< UUID from Bluetooth Assigned Numbers, see @ref ble_gatt_unit_t. */
+        uint8_t  gatt_namespace; /**< Namespace from Bluetooth Assigned Numbers, normally '1',  see @ref BLE_GATT_CPF_NAMESPACES. */
+        uint16_t gatt_nsdesc;    /**< Namespace description from Bluetooth Assigned Numbers, normally '0', see @ref BLE_GATT_CPF_NAMESPACES. */
+    } presentation_format_t;
+
+    /**
+     *  @brief  Creates a new GattCharacteristic using the specified 16-bit
+     *          UUID, value length, and properties
+     *
+     *  @note   The UUID value must be unique in the service and is normally >1
+     *
+     *  @param[in]  uuid
+     *              The UUID to use for this characteristic
+     *  @param[in]  valuePtr
+     *              The memory holding the initial value. The value is copied
+     *              into the stack when the enclosing service is added; and
+     *              thereafter maintained internally by the stack.
+     *  @param[in]  initialLen
+     *              The min length in bytes of this characteristic's value
+     *  @param[in]  maxLen
+     *              The max length in bytes of this characteristic's value
+     *  @param[in]  props
+     *              The 8-bit bit field containing the characteristic's properties
+     *  @param[in]  descriptors
+     *              A pointer to an array of descriptors to be included within this characteristic
+     *  @param[in]  numDescriptors
+     *              The number of descriptors
+     *  @param[in]  writeAuthorizationIn
+     *              Do the attribute(s) of this characteristic have write
+     *              authorization enabled? if so, Write Authorization will be
+     *              requested from the application on every write request
+     *              operation (but not write command).
+     *
+     * @NOTE: If valuePtr == NULL, initialLength == 0, and properties == READ
+     *        for the value attribute of a characteristic, then that particular
+     *        characteristic may be considered optional and dropped while
+     *        instantiating the service with the underlying BLE stack.
+     */
+    GattCharacteristic(const UUID    &uuid,
+                       uint8_t       *valuePtr            = NULL,
+                       uint16_t       initialLen          = 0,
+                       uint16_t       maxLen              = 0,
+                       uint8_t        props               = BLE_GATT_CHAR_PROPERTIES_NONE,
+                       GattAttribute *descriptors[]       = NULL,
+                       unsigned       numDescriptors      = 0) :
+        _valueAttribute(uuid, valuePtr, initialLen, maxLen),
+        _properties(props),
+        _descriptors(descriptors),
+        _descriptorCount(numDescriptors),
+        enabledReadAuthorization(false),
+        enabledWriteAuthorization(false),
+        readAuthorizationCallback(),
+        writeAuthorizationCallback() {
+        /* empty */
+    }
+
+    /**
+     * Authorization.
+     */
+public:
+    void setWriteAuthorizationCallback(void (*callback)(GattCharacteristicWriteAuthCBParams *)) {
+        writeAuthorizationCallback.attach(callback);
+        enabledWriteAuthorization = true;
+    }
+    template <typename T>
+    void setWriteAuthorizationCallback(T *object, void (T::*member)(GattCharacteristicWriteAuthCBParams *)) {
+        writeAuthorizationCallback.attach(object, member);
+        enabledWriteAuthorization = true;
+    }
+    void setReadAuthorizationCallback(void (*callback)(GattCharacteristicReadAuthCBParams *)) {
+        readAuthorizationCallback.attach(callback);
+        enabledReadAuthorization = true;
+    }
+    template <typename T>
+    void setReadAuthorizationCallback(T *object, void (T::*member)(GattCharacteristicReadAuthCBParams *)) {
+        readAuthorizationCallback.attach(object, member);
+        enabledReadAuthorization = true;
+    }
+
+    /**
+     * Helper function meant to be called from the guts of the BLE stack to
+     * determine the authorization reply for a write request.
+     * @param  params to capture the context of the write-auth request; and also contains an out-parameter for reply.
+     * @return        true if the write is authorized to proceed.
+     */
+    bool authorizeWrite(GattCharacteristicWriteAuthCBParams *params) {
+        if (!isWriteAuthorizationEnabled()) {
+            return true;
+        }
+
+        params->authorizationReply = true; /* initialized to true by default */
+        writeAuthorizationCallback.call(params);
+        return params->authorizationReply;
+    }
+
+    /**
+     * Helper function meant to be called from the guts of the BLE stack to
+     * determine the authorization reply for a read request.
+     * @param  params to capture the context of the read-auth request; and also contains an out-parameter for reply.
+     * @return        true if the read is authorized to proceed.
+     */
+    bool authorizeRead(GattCharacteristicReadAuthCBParams *params) {
+        if (!isReadAuthorizationEnabled()) {
+            return true;
+        }
+
+        params->authorizationReply = true; /* initialized to true by default */
+        readAuthorizationCallback.call(params);
+        return params->authorizationReply;
+    }
+
+    /* accessors */
+public:
+    GattAttribute&          getValueAttribute()                 {return _valueAttribute;                }
+    const GattAttribute&    getValueAttribute()           const {return _valueAttribute;                }
+    GattAttribute::Handle_t getValueHandle(void)          const {return getValueAttribute().getHandle();}
+    uint8_t                 getProperties(void)           const {return _properties;                    }
+    uint8_t                 getDescriptorCount(void)      const {return _descriptorCount;               }
+    bool                    isReadAuthorizationEnabled()  const {return enabledReadAuthorization;       }
+    bool                    isWriteAuthorizationEnabled() const {return enabledWriteAuthorization;      }
+
+    GattAttribute *getDescriptor(uint8_t index) {
+        if (index >= _descriptorCount) {
+            return NULL;
+        }
+
+        return _descriptors[index];
+    }
+
+private:
+    GattAttribute   _valueAttribute;
+    uint8_t         _properties;
+    GattAttribute **_descriptors;
+    uint8_t         _descriptorCount;
+
+    bool            enabledReadAuthorization;
+    bool            enabledWriteAuthorization;
+    FunctionPointerWithContext<GattCharacteristicReadAuthCBParams *>  readAuthorizationCallback;
+    FunctionPointerWithContext<GattCharacteristicWriteAuthCBParams *> writeAuthorizationCallback;
+
+private:
+    /* disallow copy and assignment */
+    GattCharacteristic(const GattCharacteristic &);
+    GattCharacteristic& operator=(const GattCharacteristic &);
+};
+
+#endif // ifndef __GATT_CHARACTERISTIC_H__
\ No newline at end of file