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Diff: ble/GattCharacteristic.h
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/ble/GattCharacteristic.h Fri Jun 19 15:53:28 2015 +0100 @@ -0,0 +1,515 @@ +/* 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 "Gap.h" +#include "SecurityManager.h" +#include "GattAttribute.h" +#include "GattCallbackParamTypes.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 + */ + /**************************************************************************/ + enum { + 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 /**< */ + }; + + /**************************************************************************/ + /*! + \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 + */ + /**************************************************************************/ + enum { + 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. */ + }; + + /**************************************************************************/ + /*! + \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. The memory for the descriptor array is + * owned by the caller, and should remain valid at least until + * the enclosing service is added to the GATT table. + * @param[in] numDescriptors + * The number of descriptors in the previous array. + * + * @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), + _requiredSecurity(SecurityManager::SECURITY_MODE_ENCRYPTION_OPEN_LINK), + _descriptors(descriptors), + _descriptorCount(numDescriptors), + enabledReadAuthorization(false), + enabledWriteAuthorization(false), + readAuthorizationCallback(), + writeAuthorizationCallback() { + /* empty */ + } + +public: + /** + * Setup the minimum security (mode and level) requirements for access to the characteristic's value attribute. + * + * @param securityMode Can be one of encryption or signing, with or without protection for MITM (man in the middle attacks). + */ + void requireSecurity(SecurityManager::SecurityMode_t securityMode) { + _requiredSecurity = securityMode; + } + +public: + /** + * Authorization. + */ + void setWriteAuthorizationCallback(void (*callback)(GattWriteAuthCallbackParams *)) { + writeAuthorizationCallback.attach(callback); + enabledWriteAuthorization = true; + } + template <typename T> + void setWriteAuthorizationCallback(T *object, void (T::*member)(GattWriteAuthCallbackParams *)) { + writeAuthorizationCallback.attach(object, member); + enabledWriteAuthorization = true; + } + void setReadAuthorizationCallback(void (*callback)(GattReadAuthCallbackParams *)) { + readAuthorizationCallback.attach(callback); + enabledReadAuthorization = true; + } + template <typename T> + void setReadAuthorizationCallback(T *object, void (T::*member)(GattReadAuthCallbackParams *)) { + 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. + */ + GattAuthCallbackReply_t authorizeWrite(GattWriteAuthCallbackParams *params) { + if (!isWriteAuthorizationEnabled()) { + return AUTH_CALLBACK_REPLY_SUCCESS; + } + + params->authorizationReply = AUTH_CALLBACK_REPLY_SUCCESS; /* initialized to no-error 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. + * + * @NOTE: To authorize/deny the read the params->authorizationReply field + * should be set to true/false. + * + * If the read is approved and params->data is unchanged (NULL), + * the current characteristic value will be used. + * + * If the read is approved, a new value can be provided by setting + * the params->data pointer and params->len fields. + * + * @return true if the read is authorized to proceed. + */ + GattAuthCallbackReply_t authorizeRead(GattReadAuthCallbackParams *params) { + if (!isReadAuthorizationEnabled()) { + return AUTH_CALLBACK_REPLY_SUCCESS; + } + + params->authorizationReply = AUTH_CALLBACK_REPLY_SUCCESS; /* initialized to no-error 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; } + SecurityManager::SecurityMode_t getRequiredSecurity() const {return _requiredSecurity; } + 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; + SecurityManager::SecurityMode_t _requiredSecurity; + GattAttribute **_descriptors; + uint8_t _descriptorCount; + + bool enabledReadAuthorization; + bool enabledWriteAuthorization; + FunctionPointerWithContext<GattReadAuthCallbackParams *> readAuthorizationCallback; + FunctionPointerWithContext<GattWriteAuthCallbackParams *> writeAuthorizationCallback; + +private: + /* disallow copy and assignment */ + GattCharacteristic(const GattCharacteristic &); + GattCharacteristic& operator=(const GattCharacteristic &); +}; + +template <typename T> +class ReadOnlyGattCharacteristic : public GattCharacteristic { +public: + ReadOnlyGattCharacteristic<T>(const UUID &uuid, T *valuePtr, uint8_t additionalProperties = BLE_GATT_CHAR_PROPERTIES_NONE) : + GattCharacteristic(uuid, reinterpret_cast<uint8_t *>(valuePtr), sizeof(T), sizeof(T), GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | additionalProperties) { + /* empty */ + } +}; + +template <typename T> +class WriteOnlyGattCharacteristic : public GattCharacteristic { +public: + WriteOnlyGattCharacteristic<T>(const UUID &uuid, T *valuePtr, uint8_t additionalProperties = BLE_GATT_CHAR_PROPERTIES_NONE) : + GattCharacteristic(uuid, reinterpret_cast<uint8_t *>(valuePtr), sizeof(T), sizeof(T), GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE | additionalProperties) { + /* empty */ + } +}; + +template <typename T> +class ReadWriteGattCharacteristic : public GattCharacteristic { +public: + ReadWriteGattCharacteristic<T>(const UUID &uuid, T *valuePtr, uint8_t additionalProperties = BLE_GATT_CHAR_PROPERTIES_NONE) : + GattCharacteristic(uuid, reinterpret_cast<uint8_t *>(valuePtr), sizeof(T), sizeof(T), + GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE | additionalProperties) { + /* empty */ + } +}; + +template <typename T, unsigned NUM_ELEMENTS> +class WriteOnlyArrayGattCharacteristic : public GattCharacteristic { +public: + WriteOnlyArrayGattCharacteristic<T, NUM_ELEMENTS>(const UUID &uuid, T valuePtr[NUM_ELEMENTS], uint8_t additionalProperties = BLE_GATT_CHAR_PROPERTIES_NONE) : + GattCharacteristic(uuid, reinterpret_cast<uint8_t *>(valuePtr), sizeof(T) * NUM_ELEMENTS, sizeof(T) * NUM_ELEMENTS, + GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE | additionalProperties) { + /* empty */ + } +}; + +template <typename T, unsigned NUM_ELEMENTS> +class ReadOnlyArrayGattCharacteristic : public GattCharacteristic { +public: + ReadOnlyArrayGattCharacteristic<T, NUM_ELEMENTS>(const UUID &uuid, T valuePtr[NUM_ELEMENTS], uint8_t additionalProperties = BLE_GATT_CHAR_PROPERTIES_NONE) : + GattCharacteristic(uuid, reinterpret_cast<uint8_t *>(valuePtr), sizeof(T) * NUM_ELEMENTS, sizeof(T) * NUM_ELEMENTS, + GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | additionalProperties) { + /* empty */ + } +}; + +template <typename T, unsigned NUM_ELEMENTS> +class ReadWriteArrayGattCharacteristic : public GattCharacteristic { +public: + ReadWriteArrayGattCharacteristic<T, NUM_ELEMENTS>(const UUID &uuid, T valuePtr[NUM_ELEMENTS], uint8_t additionalProperties = BLE_GATT_CHAR_PROPERTIES_NONE) : + GattCharacteristic(uuid, reinterpret_cast<uint8_t *>(valuePtr), sizeof(T) * NUM_ELEMENTS, sizeof(T) * NUM_ELEMENTS, + GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE | additionalProperties) { + /* empty */ + } +}; + +#endif // ifndef __GATT_CHARACTERISTIC_H__ \ No newline at end of file