157 lines
8.3 KiB
C
157 lines
8.3 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_conn_params Connection Parameters Negotiation
|
|
* @{
|
|
* @ingroup ble_sdk_lib
|
|
* @brief Module for initiating and executing a connection parameters negotiation procedure.
|
|
*/
|
|
|
|
#ifndef BLE_CONN_PARAMS_H__
|
|
#define BLE_CONN_PARAMS_H__
|
|
|
|
#include <stdint.h>
|
|
#include "ble.h"
|
|
#include "ble_srv_common.h"
|
|
#include "sdk_errors.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**@brief Connection Parameters Module event type. */
|
|
typedef enum
|
|
{
|
|
BLE_CONN_PARAMS_EVT_FAILED, //!< Negotiation procedure failed.
|
|
BLE_CONN_PARAMS_EVT_SUCCEEDED //!< Negotiation procedure succeeded.
|
|
} ble_conn_params_evt_type_t;
|
|
|
|
/**@brief Connection Parameters Module event. */
|
|
typedef struct
|
|
{
|
|
ble_conn_params_evt_type_t evt_type; //!< Type of event.
|
|
uint16_t conn_handle; //!< Connection the event refers to.
|
|
} ble_conn_params_evt_t;
|
|
|
|
/**@brief Connection Parameters Module event handler type. */
|
|
typedef void (*ble_conn_params_evt_handler_t) (ble_conn_params_evt_t * p_evt);
|
|
|
|
/**@brief Connection Parameters Module init structure. This contains all options and data needed for
|
|
* initialization of the connection parameters negotiation module. */
|
|
typedef struct
|
|
{
|
|
ble_gap_conn_params_t * p_conn_params; //!< Pointer to the connection parameters desired by the application. When calling ble_conn_params_init, if this parameter is set to NULL, the connection parameters will be fetched from host.
|
|
uint32_t first_conn_params_update_delay; //!< Time from initiating event (connect or start of notification) to first time sd_ble_gap_conn_param_update is called (in number of timer ticks).
|
|
uint32_t next_conn_params_update_delay; //!< Time between each call to sd_ble_gap_conn_param_update after the first (in number of timer ticks). Recommended value 30 seconds as per BLUETOOTH SPECIFICATION Version 4.0.
|
|
uint8_t max_conn_params_update_count; //!< Number of attempts before giving up the negotiation.
|
|
uint16_t start_on_notify_cccd_handle; //!< If procedure is to be started when notification is started, set this to the handle of the corresponding CCCD. Set to BLE_GATT_HANDLE_INVALID if procedure is to be started on connect event.
|
|
bool disconnect_on_fail; //!< Set to TRUE if a failed connection parameters update shall cause an automatic disconnection, set to FALSE otherwise.
|
|
ble_conn_params_evt_handler_t evt_handler; //!< Event handler to be called for handling events in the Connection Parameters.
|
|
ble_srv_error_handler_t error_handler; //!< Function to be called in case of an error.
|
|
} ble_conn_params_init_t;
|
|
|
|
|
|
/**@brief Function for initializing the Connection Parameters module.
|
|
*
|
|
* @note If the negotiation procedure should be triggered when notification/indication of
|
|
* any characteristic is enabled by the peer, then this function must be called after
|
|
* having initialized the services.
|
|
*
|
|
* @param[in] p_init This contains information needed to initialize this module.
|
|
*
|
|
* @retval NRF_SUCCESS Successful initialization.
|
|
* @retval NRF_ERROR_INVALID_ADDR The provided Connection Parameters pointer is invalid.
|
|
* @retval NRF_ERROR_INVALID_PARAM The provided Connection Parameters are not valid.
|
|
* @retval NRF_ERROR_NULL @p p_init was NULL.
|
|
* @retval NRF_ERROR_INTERNAL An unexpected error occurred.
|
|
*/
|
|
ret_code_t ble_conn_params_init(const ble_conn_params_init_t * p_init);
|
|
|
|
/**@brief Function for stopping the Connection Parameters module.
|
|
*
|
|
* @details This function is intended to be used by the application to clean up the connection
|
|
* parameters update module. This will stop the connection parameters update timer if
|
|
* running, thereby preventing any impending connection parameters update procedure. This
|
|
* function must be called by the application when it needs to clean itself up (for
|
|
* example, before disabling the bluetooth SoftDevice) so that an unwanted timer expiry
|
|
* event can be avoided.
|
|
*
|
|
* @retval NRF_SUCCESS Successfully stopped module.
|
|
* @retval NRF_ERROR_BUSY Could not complete operation at this time. Try again later.
|
|
Note that some timers may have been disabled.
|
|
* @retval NRF_ERROR_INTERNAL An unexpected error occurred.
|
|
*/
|
|
ret_code_t ble_conn_params_stop(void);
|
|
|
|
/**@brief Function for changing the current connection parameters to a new set.
|
|
*
|
|
* @details Use this function to change the connection parameters to a new set of parameter
|
|
* (ie different from the ones given at init of the module).
|
|
* This function is useful for scenario where most of the time the application
|
|
* needs a relatively big connection interval, and just sometimes, for a temporary
|
|
* period requires shorter connection interval, for example to transfer a higher
|
|
* amount of data.
|
|
* If the given parameters does not match the current connection's parameters
|
|
* this function initiates a new negotiation.
|
|
*
|
|
* @param[in] conn_handle The connection to change connection parameters on.
|
|
* @param[in] p_new_params This contains the new connections parameters to setup.
|
|
*
|
|
* @retval NRF_SUCCESS Successfully started Connection Parameter update procedure.
|
|
* @retval NRF_ERROR_INVALID_ADDR The provided Connection Parameters pointer is invalid.
|
|
* @retval NRF_ERROR_INVALID_PARAM The provided Connection Parameters are not valid.
|
|
* @retval BLE_ERROR_INVALID_CONN_HANDLE The provided connection handle is invalid.
|
|
* @retval NRF_ERROR_INVALID_STATE The connection is not in a state where this operation can
|
|
* performed.
|
|
* @retval NRF_ERROR_BUSY Could not start operation at this time. Try again later.
|
|
* @retval NRF_ERROR_NO_MEM The SoftDevice lacks the memory to perform the action.
|
|
*/
|
|
ret_code_t ble_conn_params_change_conn_params(uint16_t conn_handle,
|
|
ble_gap_conn_params_t * p_new_params);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif // BLE_CONN_PARAMS_H__
|
|
|
|
/** @} */
|