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COMPONENTS/softdevice/s132/headers/ble_l2cap.h
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COMPONENTS/softdevice/s132/headers/ble_l2cap.h
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/*
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* Copyright (c) Nordic Semiconductor ASA
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice, this
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* list of conditions and the following disclaimer in the documentation and/or
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* other materials provided with the distribution.
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*
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* 3. Neither the name of Nordic Semiconductor ASA nor the names of other
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* contributors to this software may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* 4. This software must only be used in a processor manufactured by Nordic
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* Semiconductor ASA, or in a processor manufactured by a third party that
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* is used in combination with a processor manufactured by Nordic Semiconductor.
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*
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/**
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@addtogroup BLE_L2CAP Logical Link Control and Adaptation Protocol (L2CAP)
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@{
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@brief Definitions and prototypes for the L2CAP interface.
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*/
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#ifndef BLE_L2CAP_H__
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#define BLE_L2CAP_H__
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#include "ble_types.h"
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#include "ble_ranges.h"
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#include "ble_err.h"
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#include "nrf_svc.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**@addtogroup BLE_L2CAP_ENUMERATIONS Enumerations
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* @{ */
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/**@brief L2CAP API SVC numbers. */
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enum BLE_L2CAP_SVCS
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{
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SD_BLE_L2CAP_CID_REGISTER = BLE_L2CAP_SVC_BASE, /**< Register a CID. */
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SD_BLE_L2CAP_CID_UNREGISTER, /**< Unregister a CID. */
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SD_BLE_L2CAP_TX /**< Transmit a packet. */
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};
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/**@brief L2CAP Event IDs. */
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enum BLE_L2CAP_EVTS
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{
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BLE_L2CAP_EVT_RX = BLE_L2CAP_EVT_BASE /**< L2CAP packet received. */
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};
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/** @} */
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/**@addtogroup BLE_L2CAP_DEFINES Defines
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* @{ */
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/**@defgroup BLE_ERRORS_L2CAP SVC return values specific to L2CAP
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* @{ */
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#define BLE_ERROR_L2CAP_CID_IN_USE (NRF_L2CAP_ERR_BASE + 0x000) /**< CID already in use. */
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/** @} */
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/**@brief Default L2CAP MTU. */
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#define BLE_L2CAP_MTU_DEF (23)
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/**@brief Invalid Channel Identifier. */
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#define BLE_L2CAP_CID_INVALID (0x0000)
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/**@brief Dynamic Channel Identifier base. */
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#define BLE_L2CAP_CID_DYN_BASE (0x0040)
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/**@brief Maximum amount of dynamic CIDs. */
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#define BLE_L2CAP_CID_DYN_MAX (8)
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/** @} */
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/**@addtogroup BLE_L2CAP_STRUCTURES Structures
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* @{ */
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/**@brief Packet header format for L2CAP transmission. */
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typedef struct
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{
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uint16_t len; /**< Length of valid info in data member. */
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uint16_t cid; /**< Channel ID on which packet is transmitted. */
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} ble_l2cap_header_t;
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/**@brief L2CAP Received packet event report. */
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typedef struct
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{
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ble_l2cap_header_t header; /**< L2CAP packet header. */
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uint8_t data[1]; /**< Packet data. @note This is a variable length array. The size of 1 indicated is only a placeholder for compilation.
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See @ref sd_ble_evt_get for more information on how to use event structures with variable length array members. */
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} ble_l2cap_evt_rx_t;
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/**@brief L2CAP event callback event structure. */
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typedef struct
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{
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uint16_t conn_handle; /**< Connection Handle on which event occured. */
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union
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{
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ble_l2cap_evt_rx_t rx; /**< RX Event parameters. */
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} params; /**< Event Parameters. */
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} ble_l2cap_evt_t;
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/** @} */
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/**@addtogroup BLE_L2CAP_FUNCTIONS Functions
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* @{ */
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/**@brief Register a CID with L2CAP.
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*
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* @details This registers a higher protocol layer with the L2CAP multiplexer, and is requried prior to all operations on the CID.
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*
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* @mscs
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* @mmsc{@ref BLE_L2CAP_API_MSC}
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* @endmscs
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*
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* @param[in] cid L2CAP CID.
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*
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* @retval ::NRF_SUCCESS Successfully registered a CID with the L2CAP layer.
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* @retval ::NRF_ERROR_INVALID_PARAM Invalid parameter(s) supplied, CID must be above @ref BLE_L2CAP_CID_DYN_BASE.
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* @retval ::BLE_ERROR_L2CAP_CID_IN_USE L2CAP CID already in use.
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* @retval ::NRF_ERROR_NO_MEM Not enough memory to complete operation.
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*/
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SVCALL(SD_BLE_L2CAP_CID_REGISTER, uint32_t, sd_ble_l2cap_cid_register(uint16_t cid));
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/**@brief Unregister a CID with L2CAP.
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*
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* @details This unregisters a previously registerd higher protocol layer with the L2CAP multiplexer.
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*
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* @mscs
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* @mmsc{@ref BLE_L2CAP_API_MSC}
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* @endmscs
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*
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* @param[in] cid L2CAP CID.
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*
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* @retval ::NRF_SUCCESS Successfully unregistered the CID.
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* @retval ::NRF_ERROR_INVALID_PARAM Invalid parameter(s) supplied.
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* @retval ::NRF_ERROR_NOT_FOUND CID not previously registered.
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*/
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SVCALL(SD_BLE_L2CAP_CID_UNREGISTER, uint32_t, sd_ble_l2cap_cid_unregister(uint16_t cid));
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/**@brief Transmit an L2CAP packet.
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*
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* @note It is important to note that a call to this function will <b>consume an application packet</b>, and will therefore
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* generate a @ref BLE_EVT_TX_COMPLETE event when the packet has been transmitted.
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* Please see the documentation of @ref sd_ble_tx_packet_count_get for more details.
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*
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* @events
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* @event{@ref BLE_EVT_TX_COMPLETE}
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* @event{@ref BLE_L2CAP_EVT_RX}
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* @endevents
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*
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* @mscs
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* @mmsc{@ref BLE_L2CAP_API_MSC}
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* @endmscs
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*
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* @param[in] conn_handle Connection Handle.
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* @param[in] p_header Pointer to a packet header containing length and CID.
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* @param[in] p_data Pointer to the data to be transmitted.
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*
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* @retval ::NRF_SUCCESS Successfully queued an L2CAP packet for transmission.
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* @retval ::NRF_ERROR_INVALID_ADDR Invalid pointer supplied.
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* @retval ::NRF_ERROR_INVALID_PARAM Invalid parameter(s) supplied, CIDs must be registered beforehand with @ref sd_ble_l2cap_cid_register.
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* @retval ::NRF_ERROR_NOT_FOUND CID not found.
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* @retval ::NRF_ERROR_NO_MEM Not enough memory to complete operation.
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* @retval ::BLE_ERROR_NO_TX_PACKETS Not enough application packets available.
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* @retval ::NRF_ERROR_DATA_SIZE Invalid data size(s) supplied, see @ref BLE_L2CAP_MTU_DEF.
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*/
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SVCALL(SD_BLE_L2CAP_TX, uint32_t, sd_ble_l2cap_tx(uint16_t conn_handle, ble_l2cap_header_t const *p_header, uint8_t const *p_data));
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/** @} */
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#ifdef __cplusplus
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}
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#endif
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#endif // BLE_L2CAP_H__
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/**
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@}
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*/
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