ble_advdata.h

00001 /*
00002  * Copyright (c) Nordic Semiconductor ASA
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without modification,
00006  * are permitted provided that the following conditions are met:
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00010  *
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00012  *   list of conditions and the following disclaimer in the documentation and/or
00013  *   other materials provided with the distribution.
00014  *
00015  *   3. Neither the name of Nordic Semiconductor ASA nor the names of other
00016  *   contributors to this software may be used to endorse or promote products
00017  *   derived from this software without specific prior written permission.
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00019  *
00020  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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00022  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
00023  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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00032 
00033 /** @file
00034  *
00035  * @defgroup ble_sdk_lib_advdata Advertising and Scan Response Data Encoder
00036  * @{
00037  * @ingroup ble_sdk_lib
00038  * @brief Functions for encoding data in the Advertising and Scan Response Data format,
00039  *        and for passing the data to the stack.
00040  */
00041 
00042 #ifndef BLE_ADVDATA_H__
00043 #define BLE_ADVDATA_H__
00044 
00045 #include <stdint.h>
00046 #include <stdbool.h>
00047 #include <string.h>
00048 #include "ble.h"
00049 #include "app_util.h "
00050 
00051 
00052 #define ADV_LENGTH_FIELD_SIZE              1UL                                 /**< Advertising Data and Scan Response format contains 1 octet for the length. */
00053 #define ADV_AD_TYPE_FIELD_SIZE             1UL                                 /**< Advertising Data and Scan Response format contains 1 octet for the AD type. */
00054 #define ADV_AD_DATA_OFFSET                 (ADV_LENGTH_FIELD_SIZE + \
00055                                             ADV_AD_TYPE_FIELD_SIZE)            /**< Offset for the AD data field of the Advertising Data and Scan Response format. */
00056 #define AD_TYPE_TK_VALUE_DATA_SIZE         (sizeof(ble_advdata_tk_value_t))    /**< Data size (in octets) of the Security Manager TK value AD type. */
00057 #define AD_TYPE_TK_VALUE_SIZE              (ADV_AD_DATA_OFFSET + \
00058                                             AD_TYPE_TK_VALUE_DATA_SIZE)        /**< Size (in octets) of the Security Manager TK value AD type. */
00059 #define AD_TYPE_LE_ROLE_DATA_SIZE          1UL                                 /**< Data size (in octets) of the LE Bluetooth Device Address AD type. */
00060 #define AD_TYPE_LE_ROLE_SIZE               (ADV_AD_DATA_OFFSET + \
00061                                             AD_TYPE_LE_ROLE_DATA_SIZE)         /**< Size (in octets) of the LE Bluetooth Device Address AD type. */
00062 #define AD_TYPE_BLE_DEVICE_ADDR_TYPE_SIZE  1UL                                 /**< Data size (in octets) of the Address type of the LE Bluetooth Device Address AD type. */
00063 #define AD_TYPE_BLE_DEVICE_ADDR_DATA_SIZE  (BLE_GAP_ADDR_LEN + \
00064                                             AD_TYPE_BLE_DEVICE_ADDR_TYPE_SIZE) /**< Data size (in octets) of the LE Bluetooth Device Address AD type. */
00065 #define AD_TYPE_BLE_DEVICE_ADDR_SIZE       (ADV_AD_DATA_OFFSET + \
00066                                             AD_TYPE_BLE_DEVICE_ADDR_DATA_SIZE) /**< Size (in octets) of the LE Bluetooth Device Address AD type. */
00067 #define AD_TYPE_APPEARANCE_DATA_SIZE       2UL                                 /**< Data size (in octets) of the Appearance AD type. */
00068 #define AD_TYPE_APPEARANCE_SIZE            (ADV_AD_DATA_OFFSET + \
00069                                             AD_TYPE_APPEARANCE_DATA_SIZE)      /**< Size (in octets) of the Appearance AD type. */
00070 #define AD_TYPE_FLAGS_DATA_SIZE            1UL                                 /**< Data size (in octets) of the Flags AD type. */
00071 #define AD_TYPE_FLAGS_SIZE                 (ADV_AD_DATA_OFFSET + \
00072                                             AD_TYPE_FLAGS_DATA_SIZE)           /**< Size (in octets) of the Flags AD type. */
00073 #define AD_TYPE_TX_POWER_LEVEL_DATA_SIZE   1UL                                 /**< Data size (in octets) of the TX Power Level AD type. */
00074 #define AD_TYPE_TX_POWER_LEVEL_SIZE        (ADV_AD_DATA_OFFSET + \
00075                                             AD_TYPE_TX_POWER_LEVEL_DATA_SIZE)  /**< Size (in octets) of the TX Power Level AD type. */
00076 #define AD_TYPE_CONN_INT_DATA_SIZE         4UL                                 /**< Data size (in octets) of the Slave Connection Interval Range AD type. */
00077 #define AD_TYPE_CONN_INT_SIZE              (ADV_AD_DATA_OFFSET + \
00078                                             AD_TYPE_CONN_INT_DATA_SIZE)        /**< Data size (in octets) of the Slave Connection Interval Range AD type. */
00079 #define AD_TYPE_MANUF_SPEC_DATA_ID_SIZE    2UL                                 /**< Size (in octets) of the Company Identifier Code, which is a part of the Manufacturer Specific Data AD type. */
00080 #define AD_TYPE_SERV_DATA_16BIT_UUID_SIZE  2UL                                 /**< Size (in octets) of the 16-bit UUID, which is a part of the Service Data AD type. */
00081 #define AD_TYPE_OOB_FLAGS_DATA_SIZE        1UL                                 /**< Data size (in octets) of the Security Manager OOB Flags AD type. */
00082 #define AD_TYPE_OOB_FLAGS_SIZE             (ADV_AD_DATA_OFFSET + \
00083                                             AD_TYPE_OOB_FLAGS_DATA_SIZE)       /**< Size (in octets) of the Security Manager OOB Flags AD type. */
00084 
00085 #define AD_TYPE_SEC_MGR_OOB_FLAG_SET                   1U                      /**< Security Manager OOB Flag set. Flag selection is done using _POS defines */
00086 #define AD_TYPE_SEC_MGR_OOB_FLAG_CLEAR                 0U                      /**< Security Manager OOB Flag clear. Flag selection is done using _POS defines */
00087 #define AD_TYPE_SEC_MGR_OOB_FLAG_OOB_DATA_PRESENT_POS  0UL                     /**< Security Manager OOB Data Present Flag position. */
00088 #define AD_TYPE_SEC_MGR_OOB_FLAG_OOB_LE_SUPPORTED_POS  1UL                     /**< Security Manager OOB Low Energy Supported Flag position. */
00089 #define AD_TYPE_SEC_MGR_OOB_FLAG_SIM_LE_AND_EP_POS     2UL                     /**< Security Manager OOB Simultaneous LE and BR/EDR to Same Device Capable Flag position. */
00090 #define AD_TYPE_SEC_MGR_OOB_ADDRESS_TYPE_PUBLIC        0UL                     /**< Security Manager OOB Public Address type. */
00091 #define AD_TYPE_SEC_MGR_OOB_ADDRESS_TYPE_RANDOM        1UL                     /**< Security Manager OOB Random Address type. */
00092 #define AD_TYPE_SEC_MGR_OOB_FLAG_ADDRESS_TYPE_POS      3UL                     /**< Security Manager OOB Address type Flag (0 = Public Address, 1 = Random Address) position. */
00093 
00094 
00095 /**@brief Security Manager TK value. */
00096 typedef struct
00097 {
00098   uint8_t tk[BLE_GAP_SEC_KEY_LEN];   /**< Array containing TK value. */
00099 } ble_advdata_tk_value_t;
00100 
00101 /**@brief Advertising data LE Role types. This enumeration contains the options available for the LE role inside
00102  *        the advertising data. */
00103 typedef enum
00104 {
00105     BLE_ADVDATA_ROLE_NOT_PRESENT = 0,                                 /**< LE Role AD structure not present. */
00106     BLE_ADVDATA_ROLE_ONLY_PERIPH,                                     /**< Only Peripheral Role supported. */
00107     BLE_ADVDATA_ROLE_ONLY_CENTRAL,                                    /**< Only Central Role supported. */
00108     BLE_ADVDATA_ROLE_BOTH_PERIPH_PREFERRED,                           /**< Peripheral and Central Role supported. Peripheral Role preferred for connection establishment. */
00109     BLE_ADVDATA_ROLE_BOTH_CENTRAL_PREFERRED                           /**< Peripheral and Central Role supported. Central Role preferred for connection establishment */
00110 } ble_advdata_le_role_t;
00111 
00112 /**@brief Advertising data name type. This enumeration contains the options available for the device name inside
00113  *        the advertising data. */
00114 typedef enum
00115 {
00116     BLE_ADVDATA_NO_NAME,                                              /**< Include no device name in advertising data. */
00117     BLE_ADVDATA_SHORT_NAME,                                           /**< Include short device name in advertising data. */
00118     BLE_ADVDATA_FULL_NAME                                             /**< Include full device name in advertising data. */
00119 } ble_advdata_name_type_t;
00120 
00121 /**@brief UUID list type. */
00122 typedef struct
00123 {
00124     uint16_t                     uuid_cnt;                            /**< Number of UUID entries. */
00125     ble_uuid_t *                 p_uuids;                             /**< Pointer to UUID array entries. */
00126 } ble_advdata_uuid_list_t;
00127 
00128 /**@brief Connection interval range structure. */
00129 typedef struct
00130 {
00131     uint16_t                     min_conn_interval;                   /**< Minimum connection interval, in units of 1.25 ms, range 6 to 3200 (7.5 ms to 4 s). */
00132     uint16_t                     max_conn_interval;                   /**< Maximum connection interval, in units of 1.25 ms, range 6 to 3200 (7.5 ms to 4 s). The value 0xFFFF indicates no specific maximum. */
00133 } ble_advdata_conn_int_t;
00134 
00135 /**@brief Manufacturer specific data structure. */
00136 typedef struct
00137 {
00138     uint16_t                     company_identifier;                  /**< Company identifier code. */
00139     uint8_array_t                data;                                /**< Additional manufacturer specific data. */
00140 } ble_advdata_manuf_data_t;
00141 
00142 /**@brief Service data structure. */
00143 typedef struct
00144 {
00145     uint16_t                     service_uuid;                        /**< Service UUID. */
00146     uint8_array_t                data;                                /**< Additional service data. */
00147 } ble_advdata_service_data_t;
00148 
00149 /**@brief Advertising data structure. This structure contains all options and data needed for encoding and
00150  *        setting the advertising data. */
00151 typedef struct
00152 {
00153     ble_advdata_name_type_t      name_type;                           /**< Type of device name. */
00154     uint8_t                      short_name_len;                      /**< Length of short device name (if short type is specified). */
00155     bool                         include_appearance;                  /**< Determines if Appearance shall be included. */
00156     uint8_t                      flags;                               /**< Advertising data Flags field. */
00157     int8_t *                     p_tx_power_level;                    /**< TX Power Level field. */
00158     ble_advdata_uuid_list_t      uuids_more_available;                /**< List of UUIDs in the 'More Available' list. */
00159     ble_advdata_uuid_list_t      uuids_complete;                      /**< List of UUIDs in the 'Complete' list. */
00160     ble_advdata_uuid_list_t      uuids_solicited;                     /**< List of solicited UUIDs. */
00161     ble_advdata_conn_int_t *     p_slave_conn_int;                    /**< Slave Connection Interval Range. */
00162     ble_advdata_manuf_data_t *   p_manuf_specific_data;               /**< Manufacturer specific data. */
00163     ble_advdata_service_data_t * p_service_data_array;                /**< Array of Service data structures. */
00164     uint8_t                      service_data_count;                  /**< Number of Service data structures. */
00165     bool                         include_ble_device_addr;             /**< Determines if LE Bluetooth Device Address shall be included. */
00166     ble_advdata_le_role_t        le_role;                             /**< LE Role field. Included when different from @ref BLE_ADVDATA_ROLE_NOT_PRESENT.*/
00167     ble_advdata_tk_value_t *     p_tk_value;                          /**< Security Manager TK value field. Included when different from NULL.*/
00168     uint8_t *                    p_sec_mgr_oob_flags;                 /**< Security Manager Out Of Band Flags field. Included when different from NULL.*/
00169 } ble_advdata_t;
00170 
00171 /**@brief Function for encoding data in the Advertising and Scan Response data format
00172  *        (AD structures).
00173  *
00174  * @details This function encodes data into the Advertising and Scan Response data format
00175  *          (AD structures) based on the selections in the supplied structures. This function can be used to
00176  *          create a payload of Advertising packet or Scan Response packet, or a payload of NFC
00177  *          message intended for initiating the Out-of-Band pairing.
00178  *
00179  * @param[in]      p_advdata       Pointer to the structure for specifying the content of encoded data.
00180  * @param[out]     p_encoded_data  Pointer to the buffer where encoded data will be returned.
00181  * @param[in,out]  p_len           \c in: Size of \p p_encoded_data buffer.
00182  *                                 \c out: Length of encoded data.
00183  *
00184  * @retval NRF_SUCCESS             If the operation was successful.
00185  * @retval NRF_ERROR_INVALID_PARAM If the operation failed because a wrong parameter was provided in \p p_advdata.
00186  * @retval NRF_ERROR_DATA_SIZE     If the operation failed because not all the requested data could fit into the
00187  *                                 provided buffer or some encoded AD structure is too long and its
00188  *                                 length cannot be encoded with one octet.
00189  *
00190  * @warning This API may override the application's request to use the long name and use a short name
00191  * instead. This truncation will occur in case the long name does not fit the provided buffer size.
00192  * The application can specify a preferred short name length if truncation is required.
00193  * For example, if the complete device name is ABCD_HRMonitor, the application can specify the short name
00194  * length to be 8, so that the short device name appears as ABCD_HRM instead of ABCD_HRMo or ABCD_HRMoni
00195  * if the available size for the short name is 9 or 12 respectively, to have a more appropriate short name.
00196  * However, it should be noted that this is just a preference that the application can specify, and
00197  * if the preference is too large to fit in the provided buffer, the name can be truncated further.
00198  */
00199 uint32_t adv_data_encode(ble_advdata_t const * const p_advdata,
00200                          uint8_t             * const p_encoded_data,
00201                          uint16_t            * const p_len);
00202 
00203 /**@brief Function for encoding and setting the advertising data and/or scan response data.
00204  *
00205  * @details This function encodes advertising data and/or scan response data based on the selections
00206  *          in the supplied structures, and passes the encoded data to the stack.
00207  *
00208  * @param[in]   p_advdata   Structure for specifying the content of the advertising data.
00209  *                          Set to NULL if advertising data is not to be set.
00210  * @param[in]   p_srdata    Structure for specifying the content of the scan response data.
00211  *                          Set to NULL if scan response data is not to be set.
00212  *
00213  * @retval NRF_SUCCESS             If the operation was successful.
00214  * @retval NRF_ERROR_INVALID_PARAM If the operation failed because a wrong parameter was provided in \p p_advdata.
00215  * @retval NRF_ERROR_DATA_SIZE     If the operation failed because not all the requested data could fit into the
00216  *                                 advertising packet. The maximum size of the advertisement packet
00217  *                                 is @ref BLE_GAP_ADV_MAX_SIZE.
00218  *
00219  * @warning This API may override the application's request to use the long name and use a short name
00220  * instead. This truncation will occur in case the long name does not fit the provided buffer size.
00221  * The application can specify a preferred short name length if truncation is required.
00222  * For example, if the complete device name is ABCD_HRMonitor, the application can specify the short name
00223  * length to be 8, so that the short device name appears as ABCD_HRM instead of ABCD_HRMo or ABCD_HRMoni
00224  * if the available size for the short name is 9 or 12 respectively, to have a more appropriate short name.
00225  * However, it should be noted that this is just a preference that the application can specify, and
00226  * if the preference is too large to fit in the provided buffer, the name can be truncated further.
00227  */
00228 uint32_t ble_advdata_set(const ble_advdata_t * p_advdata, const ble_advdata_t * p_srdata);
00229 
00230 #endif // BLE_ADVDATA_H__
00231 
00232 /** @} */