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diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/experimental_ble_ots/ble_ots_l2cap.h b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/experimental_ble_ots/ble_ots_l2cap.h
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+/**
+ * Copyright (c) 2017 - 2018, 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_sdk_srv_ots_l2cap Object Transfer Service, l2cap channel handling
+ * @{
+ * @ingroup  ble_ots
+ * @brief    Object Transfer Service module
+ *
+ * @details  This module is responsible for handling the l2cap connection oriented channels.
+ */
+
+#ifndef BLE_OTS_L2CAP_H__
+#define BLE_OTS_L2CAP_H__
+
+#include <stdint.h>
+#include "ble_ots.h"
+
+/**@brief Function for initializing the Object Transfer Service l2cap module.
+ *
+ * @param[out]  p_ots_l2cap         Object Transfer Service l2cap 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 instance.
+ * @param[in]   p_ots_l2cap_init    Information needed to initialize the service.
+ *
+ * @return      NRF_SUCCESS on successful initialization, otherwise an error code.
+ */
+uint32_t ble_ots_l2cap_init(ble_ots_l2cap_t * p_ots_l2cap, ble_ots_l2cap_init_t * p_ots_l2cap_init);
+
+/**@brief Function for handling the Application's BLE Stack events.
+ *
+ * @details Handles all events from the BLE stack of interest to the l2cap module.
+ *
+ * @param[in]   p_ots_l2cap Object transfer service l2cap module structure.
+ * @param[in]   p_ble_evt   Event received from the BLE stack.
+ */
+void ble_ots_l2cap_on_ble_evt(ble_ots_l2cap_t * p_ots_l2cap, ble_evt_t const * p_ble_evt);
+
+/**@brief Function starting to send the data in the transfer buffer.
+ *
+ * @param[in]   p_ots_l2cap Object transfer service l2cap module structure.
+ * @param[in]   p_data      Pointer to the data to be sent.
+ * @param[in]   data_len    The length of the data to be sent.
+ *
+ * @return      NRF_SUCCESS             If the transmission was started.
+ * @return      NRF_ERROR_INVALID_STATE When in an invalid state. Otherwise an other error code.
+ */
+uint32_t ble_ots_l2cap_start_send(ble_ots_l2cap_t * p_ots_l2cap, uint8_t * p_data, uint16_t data_len);
+
+/**@brief Function starting to receive data to the transfer buffer.
+ *
+ * @param[in]   p_ots_l2cap     Object transfer service l2cap module structure.
+ * @param[in]   len             The length of the data to be received.
+ *
+ * @return      NRF_SUCCESS             If the transmission was started.
+ * @return      NRF_ERROR_INVALID_STATE When in an invalid state. Otherwise an other error code.
+ */
+uint32_t ble_ots_l2cap_start_recv(ble_ots_l2cap_t * p_ots_l2cap, uint16_t len);
+
+/**@brief Function that checks if the channel is available for transmission.
+ *
+ * @param[in]   p_ots_l2cap     Object transfer service l2cap module structure.
+ *
+ * @return      true if the channel is available.
+ */
+bool ble_ots_l2cap_is_channel_available(ble_ots_l2cap_t * p_ots_l2cap);
+
+/**@brief Function starting to abort the current transmission.
+ *
+ * @param[in]   p_ots_l2cap     Object transfer service l2cap module structure.
+ *
+ * @return      NRF_SUCCESS             If the transmission was aborted.
+ * @return      NRF_ERROR_INVALID_STATE When in an invalid state. Otherwise an other error code.
+ */
+uint32_t ble_ots_l2cap_abort_transmission(ble_ots_l2cap_t * p_ots_l2cap);
+
+#endif // BLE_OTS_L2CAP_H__
+
+/** @} */ // End tag for the file.
+