213 lines
9.5 KiB
C
213 lines
9.5 KiB
C
/**
|
|
* 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_bas Battery Service
|
|
* @{
|
|
* @ingroup ble_sdk_srv
|
|
* @brief Battery Service module.
|
|
*
|
|
* @details This module implements the Battery Service with the Battery Level characteristic.
|
|
* During initialization it adds the Battery Service and Battery Level characteristic
|
|
* to the BLE stack database. Optionally it can also add a Report Reference descriptor
|
|
* to the Battery Level characteristic (used when including the Battery Service in
|
|
* the HID service).
|
|
*
|
|
* If specified, the module will support notification of the Battery Level characteristic
|
|
* through the ble_bas_battery_level_update() function.
|
|
* If an event handler is supplied by the application, the Battery Service will
|
|
* generate Battery Service events to the application.
|
|
*
|
|
* @note The application must register this module as BLE event observer using the
|
|
* NRF_SDH_BLE_OBSERVER macro. Example:
|
|
* @code
|
|
* ble_bas_t instance;
|
|
* NRF_SDH_BLE_OBSERVER(anything, BLE_BAS_BLE_OBSERVER_PRIO,
|
|
* ble_bas_on_ble_evt, &instance);
|
|
* @endcode
|
|
*
|
|
* @note Attention!
|
|
* To maintain compliance with Nordic Semiconductor ASA Bluetooth profile
|
|
* qualification listings, this section of source code must not be modified.
|
|
*/
|
|
#ifndef BLE_BAS_H__
|
|
#define BLE_BAS_H__
|
|
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
#include "ble.h"
|
|
#include "ble_srv_common.h"
|
|
#include "nrf_sdh_ble.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**@brief Macro for defining a ble_bas instance.
|
|
*
|
|
* @param _name Name of the instance.
|
|
* @hideinitializer
|
|
*/
|
|
#define BLE_BAS_DEF(_name) \
|
|
static ble_bas_t _name; \
|
|
NRF_SDH_BLE_OBSERVER(_name ## _obs, \
|
|
BLE_BAS_BLE_OBSERVER_PRIO, \
|
|
ble_bas_on_ble_evt, \
|
|
&_name)
|
|
|
|
/**@brief Battery Service event type. */
|
|
typedef enum
|
|
{
|
|
BLE_BAS_EVT_NOTIFICATION_ENABLED, /**< Battery value notification enabled event. */
|
|
BLE_BAS_EVT_NOTIFICATION_DISABLED /**< Battery value notification disabled event. */
|
|
} ble_bas_evt_type_t;
|
|
|
|
/**@brief Battery Service event. */
|
|
typedef struct
|
|
{
|
|
ble_bas_evt_type_t evt_type; /**< Type of event. */
|
|
uint16_t conn_handle; /**< Connection handle. */
|
|
} ble_bas_evt_t;
|
|
|
|
// Forward declaration of the ble_bas_t type.
|
|
typedef struct ble_bas_s ble_bas_t;
|
|
|
|
/**@brief Battery Service event handler type. */
|
|
typedef void (* ble_bas_evt_handler_t) (ble_bas_t * p_bas, ble_bas_evt_t * p_evt);
|
|
|
|
/**@brief Battery Service init structure. This contains all options and data needed for
|
|
* initialization of the service.*/
|
|
typedef struct
|
|
{
|
|
ble_bas_evt_handler_t evt_handler; /**< Event handler to be called for handling events in the Battery Service. */
|
|
bool support_notification; /**< TRUE if notification of Battery Level measurement is supported. */
|
|
ble_srv_report_ref_t * p_report_ref; /**< If not NULL, a Report Reference descriptor with the specified value will be added to the Battery Level characteristic */
|
|
uint8_t initial_batt_level; /**< Initial battery level */
|
|
security_req_t bl_rd_sec; /**< Security requirement for reading the BL characteristic value. */
|
|
security_req_t bl_cccd_wr_sec; /**< Security requirement for writing the BL characteristic CCCD. */
|
|
security_req_t bl_report_rd_sec; /**< Security requirement for reading the BL characteristic descriptor. */
|
|
} ble_bas_init_t;
|
|
|
|
/**@brief Battery Service structure. This contains various status information for the service. */
|
|
struct ble_bas_s
|
|
{
|
|
ble_bas_evt_handler_t evt_handler; /**< Event handler to be called for handling events in the Battery Service. */
|
|
uint16_t service_handle; /**< Handle of Battery Service (as provided by the BLE stack). */
|
|
ble_gatts_char_handles_t battery_level_handles; /**< Handles related to the Battery Level characteristic. */
|
|
uint16_t report_ref_handle; /**< Handle of the Report Reference descriptor. */
|
|
uint8_t battery_level_last; /**< Last Battery Level measurement passed to the Battery Service. */
|
|
bool is_notification_supported; /**< TRUE if notification of Battery Level is supported. */
|
|
};
|
|
|
|
|
|
/**@brief Function for initializing the Battery Service.
|
|
*
|
|
* @param[out] p_bas Battery Service structure. This structure will have to be supplied by
|
|
* the application. It will be initialized by this function, and will later
|
|
* be used to identify this particular service instance.
|
|
* @param[in] p_bas_init Information needed to initialize the service.
|
|
*
|
|
* @return NRF_SUCCESS on successful initialization of service, otherwise an error code.
|
|
*/
|
|
ret_code_t ble_bas_init(ble_bas_t * p_bas, const ble_bas_init_t * p_bas_init);
|
|
|
|
|
|
/**@brief Function for handling the Application's BLE Stack events.
|
|
*
|
|
* @details Handles all events from the BLE stack of interest to the Battery Service.
|
|
*
|
|
* @note For the requirements in the BAS specification to be fulfilled,
|
|
* ble_bas_battery_level_update() must be called upon reconnection if the
|
|
* battery level has changed while the service has been disconnected from a bonded
|
|
* client.
|
|
*
|
|
* @param[in] p_ble_evt Event received from the BLE stack.
|
|
* @param[in] p_context Battery Service structure.
|
|
*/
|
|
void ble_bas_on_ble_evt(ble_evt_t const * p_ble_evt, void * p_context);
|
|
|
|
|
|
/**@brief Function for updating the battery level.
|
|
*
|
|
* @details The application calls this function after having performed a battery measurement.
|
|
* The battery level characteristic will only be sent to the clients which have
|
|
* enabled notifications. \ref BLE_CONN_HANDLE_ALL can be used as a connection handle
|
|
* to send notifications to all connected devices.
|
|
*
|
|
* @param[in] p_bas Battery Service structure.
|
|
* @param[in] battery_level New battery measurement value (in percent of full capacity).
|
|
* @param[in] conn_handle Connection handle.
|
|
*
|
|
* @return NRF_SUCCESS on success, otherwise an error code.
|
|
*/
|
|
ret_code_t ble_bas_battery_level_update(ble_bas_t * p_bas,
|
|
uint8_t battery_level,
|
|
uint16_t conn_handle);
|
|
|
|
|
|
/**@brief Function for sending the last battery level when bonded client reconnects.
|
|
*
|
|
* @details The application calls this function, in the case of a reconnection of
|
|
* a bonded client if the value of the battery has changed since
|
|
* its disconnection.
|
|
*
|
|
* @note For the requirements in the BAS specification to be fulfilled,
|
|
* this function must be called upon reconnection if the battery level has changed
|
|
* while the service has been disconnected from a bonded client.
|
|
*
|
|
* @param[in] p_bas Battery Service structure.
|
|
* @param[in] conn_handle Connection handle.
|
|
*
|
|
* @return NRF_SUCCESS on success,
|
|
* NRF_ERROR_INVALID_STATE when notification is not supported,
|
|
* otherwise an error code returned by @ref sd_ble_gatts_hvx.
|
|
*/
|
|
ret_code_t ble_bas_battery_lvl_on_reconnection_update(ble_bas_t * p_bas,
|
|
uint16_t conn_handle);
|
|
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif // BLE_BAS_H__
|
|
|
|
/** @} */
|