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- /**
- * Copyright (c) 2012 - 2020, 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 form under this license must not be reverse
- * engineered, decompiled, modified and/or disassembled.
- *
- * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
- * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA 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_hrs_c Heart Rate Service Client
- * @{
- * @ingroup ble_sdk_srv
- * @brief Heart Rate Service Client module.
- *
- * @details This module contains the APIs and types exposed by the Heart Rate Service Client
- * module. The application can use these APIs and types to perform the discovery of
- * Heart Rate Service at the peer and to interact with it.
- *
- * @warning Currently, this module only supports the Heart Rate Measurement characteristic. This
- * means that it is able to enable notification of the characteristic at the peer and
- * is able to receive Heart Rate Measurement notifications from the peer. It does not
- * support the Body Sensor Location and the Heart Rate Control Point characteristics.
- * When a Heart Rate Measurement is received, this module decodes only the
- * Heart Rate Measurement value field (both 8-bit and 16-bit) and provides it to
- * the application.
- *
- * @note The application must register this module as the BLE event observer by using the
- * NRF_SDH_BLE_OBSERVER macro. Example:
- * @code
- * ble_hrs_c_t instance;
- * NRF_SDH_BLE_OBSERVER(anything, BLE_HRS_C_BLE_OBSERVER_PRIO,
- * ble_hrs_c_on_ble_evt, &instance);
- * @endcode
- */
- #ifndef BLE_HRS_C_H__
- #define BLE_HRS_C_H__
- #include <stdint.h>
- #include "ble.h"
- #include "ble_db_discovery.h"
- #include "ble_srv_common.h"
- #include "sdk_config.h"
- #include "nrf_ble_gq.h"
- #include "nrf_sdh_ble.h"
- #ifdef __cplusplus
- extern "C" {
- #endif
- /**@brief Macro for defining a ble_hrs_c instance.
- *
- * @param _name Name of the instance.
- * @hideinitializer
- */
- #define BLE_HRS_C_DEF(_name) \
- static ble_hrs_c_t _name; \
- NRF_SDH_BLE_OBSERVER(_name ## _obs, \
- BLE_HRS_C_BLE_OBSERVER_PRIO, \
- ble_hrs_c_on_ble_evt, &_name)
- /** @brief Macro for defining multiple ble_hrs_c instances.
- *
- * @param _name Name of the array of instances.
- * @param _cnt Number of instances to define.
- * @hideinitializer
- */
- #define BLE_HRS_C_ARRAY_DEF(_name, _cnt) \
- static ble_hrs_c_t _name[_cnt]; \
- NRF_SDH_BLE_OBSERVERS(_name ## _obs, \
- BLE_HRS_C_BLE_OBSERVER_PRIO, \
- ble_hrs_c_on_ble_evt, &_name, _cnt)
- /** @brief Maximum number of RR intervals to be decoded for each HRM notifications (any extra RR intervals are ignored).
- *
- * This define should be defined in the sdk_config.h file to override the default.
- */
- #ifndef BLE_HRS_C_RR_INTERVALS_MAX_CNT
- #define BLE_HRS_C_RR_INTERVALS_MAX_CNT 20
- #endif
- /**
- * @defgroup hrs_c_enums Enumerations
- * @{
- */
- /**@brief HRS Client event type. */
- typedef enum
- {
- BLE_HRS_C_EVT_DISCOVERY_COMPLETE = 1, /**< Event indicating that the Heart Rate Service was discovered at the peer. */
- BLE_HRS_C_EVT_HRM_NOTIFICATION /**< Event indicating that a notification of the Heart Rate Measurement characteristic was received from the peer. */
- } ble_hrs_c_evt_type_t;
- /** @} */
- /**
- * @defgroup hrs_c_structs Structures
- * @{
- */
- /**@brief Structure containing the Heart Rate Measurement received from the peer. */
- typedef struct
- {
- uint16_t hr_value; /**< Heart Rate Value. */
- uint8_t rr_intervals_cnt; /**< Number of RR intervals. */
- uint16_t rr_intervals[BLE_HRS_C_RR_INTERVALS_MAX_CNT]; /**< RR intervals. */
- } ble_hrm_t;
- /**@brief Structure containing the handles related to the Heart Rate Service found on the peer. */
- typedef struct
- {
- uint16_t hrm_cccd_handle; /**< Handle of the CCCD of the Heart Rate Measurement characteristic. */
- uint16_t hrm_handle; /**< Handle of the Heart Rate Measurement characteristic, as provided by the SoftDevice. */
- } hrs_db_t;
- /**@brief Heart Rate Event structure. */
- typedef struct
- {
- ble_hrs_c_evt_type_t evt_type; /**< Type of the event. */
- uint16_t conn_handle; /**< Connection handle on which the Heart Rate service was discovered on the peer device..*/
- union
- {
- hrs_db_t peer_db; /**< Handles related to the Heart Rate, found on the peer device. This is filled if the evt_type is @ref BLE_HRS_C_EVT_DISCOVERY_COMPLETE.*/
- ble_hrm_t hrm; /**< Heart Rate Measurement received. This is filled if the evt_type is @ref BLE_HRS_C_EVT_HRM_NOTIFICATION. */
- } params;
- } ble_hrs_c_evt_t;
- /** @} */
- /**
- * @defgroup hrs_c_types Types
- * @{
- */
- // Forward declaration of the ble_bas_t type.
- typedef struct ble_hrs_c_s ble_hrs_c_t;
- /**@brief Event handler type.
- *
- * @details This is the type of the event handler that is to be provided by the application
- * of this module to receive events.
- */
- typedef void (* ble_hrs_c_evt_handler_t) (ble_hrs_c_t * p_ble_hrs_c, ble_hrs_c_evt_t * p_evt);
- /** @} */
- /**
- * @addtogroup hrs_c_structs
- * @{
- */
- /**@brief Heart Rate Client structure.
- */
- struct ble_hrs_c_s
- {
- uint16_t conn_handle; /**< Connection handle, as provided by the SoftDevice. */
- hrs_db_t peer_hrs_db; /**< Handles related to HRS on the peer. */
- ble_hrs_c_evt_handler_t evt_handler; /**< Application event handler to be called when there is an event related to the Heart Rate Service. */
- ble_srv_error_handler_t error_handler; /**< Function to be called in case of an error. */
- nrf_ble_gq_t * p_gatt_queue; /**< Pointer to the BLE GATT Queue instance. */
- };
- /**@brief Heart Rate Client initialization structure.
- */
- typedef struct
- {
- ble_hrs_c_evt_handler_t evt_handler; /**< Event handler to be called by the Heart Rate Client module when there is an event related to the Heart Rate Service. */
- ble_srv_error_handler_t error_handler; /**< Function to be called in case of an error. */
- nrf_ble_gq_t * p_gatt_queue; /**< Pointer to the BLE GATT Queue instance. */
- } ble_hrs_c_init_t;
- /** @} */
- /**
- * @defgroup hrs_c_functions Functions
- * @{
- */
- /**@brief Function for initializing the Heart Rate Client module.
- *
- * @details This function registers with the Database Discovery module for the Heart Rate Service.
- * The module looks for the presence of a Heart Rate Service instance at the peer
- * when a discovery is started.
- *
- * @param[in] p_ble_hrs_c Pointer to the Heart Rate Client structure.
- * @param[in] p_ble_hrs_c_init Pointer to the Heart Rate initialization structure that contains
- * the initialization information.
- *
- * @retval NRF_SUCCESS On successful initialization.
- * @retval err_code Otherwise, this function propagates the error code returned by the Database Discovery module API
- * @ref ble_db_discovery_evt_register.
- */
- uint32_t ble_hrs_c_init(ble_hrs_c_t * p_ble_hrs_c, ble_hrs_c_init_t * p_ble_hrs_c_init);
- /**@brief Function for handling BLE events from the SoftDevice.
- *
- * @details This function handles the BLE events received from the SoftDevice. If a BLE
- * event is relevant to the Heart Rate Client module, the function uses the event's data to update
- * interval variables and, if necessary, send events to the application.
- *
- * @param[in] p_ble_evt Pointer to the BLE event.
- * @param[in] p_context Pointer to the Heart Rate Client structure.
- */
- void ble_hrs_c_on_ble_evt(ble_evt_t const * p_ble_evt, void * p_context);
- /**@brief Function for requesting the peer to start sending notification of Heart Rate
- * Measurement.
- *
- * @details This function enables notification of the Heart Rate Measurement at the peer
- * by writing to the CCCD of the Heart Rate Measurement characteristic.
- *
- * @param p_ble_hrs_c Pointer to the Heart Rate Client structure.
- *
- * @retval NRF_SUCCESS If the SoftDevice is requested to write to the CCCD of the peer.
- * @retval err_code Otherwise, this function propagates the error code returned
- * by the SoftDevice API @ref sd_ble_gattc_write.
- */
- uint32_t ble_hrs_c_hrm_notif_enable(ble_hrs_c_t * p_ble_hrs_c);
- /**@brief Function for handling events from the Database Discovery module.
- *
- * @details Call this function when you get a callback event from the Database Discovery module.
- * This function handles an event from the Database Discovery module and determines
- * whether it relates to the discovery of Heart Rate Service at the peer. If it does, the function
- * calls the application's event handler to indicate that the Heart Rate Service was
- * discovered at the peer. The function also populates the event with service-related
- * information before providing it to the application.
- *
- * @param[in] p_ble_hrs_c Pointer to the Heart Rate Client structure instance for associating the link.
- * @param[in] p_evt Pointer to the event received from the Database Discovery module.
- *
- */
- void ble_hrs_on_db_disc_evt(ble_hrs_c_t * p_ble_hrs_c, const ble_db_discovery_evt_t * p_evt);
- /**@brief Function for assigning handles to an instance of hrs_c.
- *
- * @details Call this function when a link has been established with a peer to
- * associate the link to this instance of the module. This association makes it
- * possible to handle several links and associate each link to a particular
- * instance of this module. The connection handle and attribute handles are
- * provided from the discovery event @ref BLE_HRS_C_EVT_DISCOVERY_COMPLETE.
- *
- * @param[in] p_ble_hrs_c Pointer to the Heart Rate Client structure instance for associating the link.
- * @param[in] conn_handle Connection handle to associate with the given Heart Rate Client Instance.
- * @param[in] p_peer_hrs_handles Attribute handles for the HRS server you want this HRS_C client to
- * interact with.
- */
- uint32_t ble_hrs_c_handles_assign(ble_hrs_c_t * p_ble_hrs_c,
- uint16_t conn_handle,
- const hrs_db_t * p_peer_hrs_handles);
- /** @} */ // End tag for Function group.
- #ifdef __cplusplus
- }
- #endif
- #endif // BLE_HRS_C_H__
- /** @} */ // End tag for the file.
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