Diff: TARGET_VBLUNO51/TOOLCHAIN_IAR/ble_db_discovery.h

Revision:

171:3a7713b1edbc

Parent:

169:a7c7b631e539

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+++ b/TARGET_VBLUNO51/TOOLCHAIN_IAR/ble_db_discovery.h	Thu Nov 08 11:45:42 2018 +0000
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+/* 
+ * Copyright (c) 2013 Nordic Semiconductor ASA
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 
+ *   1. Redistributions of source code must retain the above copyright notice, this list 
+ *      of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form, except as embedded into a Nordic Semiconductor ASA 
+ *      integrated circuit in a product or a software update for such product, must reproduce 
+ *      the above copyright notice, this list of conditions and the following disclaimer in 
+ *      the documentation and/or other materials provided with the distribution.
+ *
+ *   3. Neither the name of Nordic Semiconductor ASA nor the names of its contributors may be 
+ *      used to endorse or promote products derived from this software without specific prior 
+ *      written permission.
+ *
+ *   4. This software, with or without modification, must only be used with a 
+ *      Nordic Semiconductor ASA integrated circuit.
+ *
+ *   5. Any software provided in binary or object form under this license must not be reverse 
+ *      engineered, decompiled, modified and/or disassembled. 
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ */
+
+
+
+/**@file
+ *
+ * @defgroup ble_sdk_lib_db_discovery Database Discovery
+ * @{
+ * @ingroup  ble_sdk_lib
+ * @brief    Database discovery module.
+ *
+ * @details  This module contains the APIs and types exposed by the DB Discovery module. These APIs
+ *           and types can be used by the application to perform discovery of a service and its
+ *           characteristics at the peer server. This module can also be used to discover the
+ *           desired services in multiple remote devices.
+ *
+ * @warning  The maximum number of characteristics per service that can be discovered by this module
+ *           is determined by the number of characteristics in the service structure defined in
+ *           db_disc_config.h. If the peer has more than the supported number of characteristics, then
+ *           the first found will be discovered and any further characteristics will be ignored. No
+ *           descriptors other than Client Characteristic Configuration Descriptors will be searched
+ *           for at the peer.
+ *
+ * @note     Presently only one instance of a Primary Service can be discovered by this module. If
+ *           there are multiple instances of the service at the peer, only the first instance
+ *           of it at the peer is fetched and returned to the application.
+ *
+ * @note     The application must propagate BLE stack events to this module by calling
+ *           ble_db_discovery_on_ble_evt().
+ *
+ */
+
+#ifndef BLE_DB_DISCOVERY_H__
+#define BLE_DB_DISCOVERY_H__
+
+#include <stdint.h>
+#include "nrf_ble_gattc.h"
+#include "nrf_ble.h"
+#include "nrf_error.h"
+#include "ble_srv_common.h"
+#include "ble_gatt_db.h"
+
+
+#define BLE_DB_DISCOVERY_MAX_SRV          6  /**< Maximum number of services supported by this module. This also indicates the maximum number of users allowed to be registered to this module. (one user per service). */
+
+
+/**@brief   Type of the DB Discovery event.
+ */
+typedef enum
+{
+    BLE_DB_DISCOVERY_COMPLETE,      /**< Event indicating that the GATT Database discovery is complete. */
+    BLE_DB_DISCOVERY_ERROR,         /**< Event indicating that an internal error has occurred in the DB Discovery module. This could typically be because of the SoftDevice API returning an error code during the DB discover.*/
+    BLE_DB_DISCOVERY_SRV_NOT_FOUND, /**< Event indicating that the service was not found at the peer.*/
+    BLE_DB_DISCOVERY_AVAILABLE      /**< Event indicating that the DB discovery module is available.*/
+} ble_db_discovery_evt_type_t;
+
+
+
+/**@brief   Structure for holding the information related to the GATT database at the server.
+ *
+ * @details This module identifies a remote database. Use one instance of this structure per
+ *          connection.
+ *
+ * @warning This structure must be zero-initialized.
+ */
+typedef struct
+{
+    ble_gatt_db_srv_t   services[BLE_DB_DISCOVERY_MAX_SRV];  /**< Information related to the current service being discovered. This is intended for internal use during service discovery.*/
+    uint8_t             srv_count;                           /**< Number of services at the peers GATT database.*/
+    uint8_t             curr_char_ind;                       /**< Index of the current characteristic being discovered. This is intended for internal use during service discovery.*/
+    uint8_t             curr_srv_ind;                        /**< Index of the current service being discovered. This is intended for internal use during service discovery.*/
+    bool                discovery_in_progress;               /**< Variable to indicate if there is a service discovery in progress. */
+    uint8_t             discoveries_count;                   /**< Number of service discoveries made, both successful and unsuccessful. */
+    uint16_t            conn_handle;                         /**< Connection handle on which the discovery is started*/
+} ble_db_discovery_t;
+
+
+/**@brief   Structure containing the event from the DB discovery module to the application.
+ */
+typedef struct
+{
+    ble_db_discovery_evt_type_t evt_type;     /**< Type of event. */
+    uint16_t                    conn_handle;  /**< Handle of the connection for which this event has occurred. */
+    union
+    {
+        ble_gatt_db_srv_t discovered_db;  /**< Structure containing the information about the GATT Database at the server. This will be filled when the event type is @ref BLE_DB_DISCOVERY_COMPLETE.*/
+        uint32_t               err_code;       /**< nRF Error code indicating the type of error which occurred in the DB Discovery module. This will be filled when the event type is @ref BLE_DB_DISCOVERY_ERROR. */
+    } params;
+} ble_db_discovery_evt_t;
+
+
+/**@brief   DB Discovery event handler type. */
+typedef void (* ble_db_discovery_evt_handler_t)(ble_db_discovery_evt_t * p_evt);
+
+
+/**@brief     Function for initializing the DB Discovery module.
+ *
+ * @param[in] evt_handler        Event handler to be called by the DB discovery module when any event
+ *                               related to discovery of the registered service occurs.
+ *
+ * @retval  NRF_SUCCESS    On successful initialization.
+ * @retval  NRF_ERROR_NULL If the handler was NULL.
+ */
+uint32_t ble_db_discovery_init(ble_db_discovery_evt_handler_t evt_handler);
+
+
+/**@brief Function for closing the DB Discovery module.
+ *
+ * @details This function will clear up any internal variables and states maintained by the
+ *          module. To re-use the module after calling this function, the function @ref
+ *          ble_db_discovery_init must be called again.
+ *
+ * @retval  NRF_SUCCESS    Operation success.
+ */
+uint32_t ble_db_discovery_close(void);
+
+
+/**@brief Function for registering with the DB Discovery module.
+ *
+ * @details   The application can use this function to inform which service it is interested in
+ *            discovering at the server.
+ *
+ * @param[in] p_uuid             Pointer to the UUID of the service to be discovered at the server.
+ *
+ * @note      The total number of services that can be discovered by this module is @ref
+ *            BLE_DB_DISCOVERY_MAX_SRV. This effectively means that the maximum number of
+ *            registrations possible is equal to the @ref BLE_DB_DISCOVERY_MAX_SRV.
+ *
+ * @retval    NRF_SUCCESS               Operation success.
+ * @retval    NRF_ERROR_NULL            When a NULL pointer is passed as input.
+ * @retval    NRF_ERROR_INVALID_STATE   If this function is called without calling the
+ *                                      @ref ble_db_discovery_init.
+ * @retval    NRF_ERROR_NO_MEM          The maximum number of registrations allowed by this module
+ *                                      has been reached.
+ */
+uint32_t ble_db_discovery_evt_register(const ble_uuid_t * const             p_uuid);
+
+
+/**@brief Function for starting the discovery of the GATT database at the server.
+ *
+ * @warning p_db_discovery structure must be zero-initialized.
+ *
+ * @param[out] p_db_discovery    Pointer to the DB Discovery structure.
+ * @param[in]  conn_handle       The handle of the connection for which the discovery should be
+ *                               started.
+ *
+ * @retval    NRF_SUCCESS               Operation success.
+ * @retval    NRF_ERROR_NULL            When a NULL pointer is passed as input.
+ * @retval    NRF_ERROR_INVALID_STATE   If this function is called without calling the
+ *                                      @ref ble_db_discovery_init, or without calling
+ *                                      @ref ble_db_discovery_evt_register.
+ * @retval    NRF_ERROR_BUSY            If a discovery is already in progress for the current
+ *                                      connection.
+ *
+ * @return                              This API propagates the error code returned by the
+ *                                      SoftDevice API @ref sd_ble_gattc_primary_services_discover.
+ */
+uint32_t ble_db_discovery_start(ble_db_discovery_t * const p_db_discovery,
+                                uint16_t                   conn_handle);
+
+
+/**@brief Function for handling the Application's BLE Stack events.
+ *
+ * @param[in,out] p_db_discovery Pointer to the DB Discovery structure.
+ * @param[in]     p_ble_evt      Pointer to the BLE event received.
+ */
+void ble_db_discovery_on_ble_evt(ble_db_discovery_t * const p_db_discovery,
+                                 const ble_evt_t * const    p_ble_evt);
+
+#endif // BLE_DB_DISCOVERY_H__
+
+/** @} */