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xiaozhengsheng
2025-08-19 09:49:41 +08:00
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components/ble/ble_services/experimental_ble_ots/ble_ots.c Normal file
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/**
* Copyright (c) 2017 - 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.
*
*/
#include <stdint.h>
#include <string.h>
#include "ble_ots.h"
#include "ble_ots_object.h"
#include "ble_ots_oacp.h"
#include "fds.h"
#define BLE_OTS_MAX_OBJ_TYPE_SIZE 16
#define BLE_OTS_OBJ_CHANGED_SIZE 7
#define OTS_INVALID_ID 0xFF
#define SIZE_DATE_TIME 7
#define BLE_OTS_INVALID_OCTET_OFFSET BLE_GATT_STATUS_ATTERR_APP_BEGIN + 1
#define BLE_OTS_INVALID_METADATA BLE_GATT_STATUS_ATTERR_APP_BEGIN + 2
#define BLE_OTS_CONCURRENCY_LIMIT_EXCEEDED BLE_GATT_STATUS_ATTERR_APP_BEGIN + 3
#define BLE_OTS_OACP_SUPPORT_FEATURE_CREATE_bp 0
#define BLE_OTS_OACP_SUPPORT_FEATURE_DELETE_bp 1
#define BLE_OTS_OACP_SUPPORT_FEATURE_CALC_CHECKSUM_bp 2
#define BLE_OTS_OACP_SUPPORT_FEATURE_EXECUTE_bp 3
#define BLE_OTS_OACP_SUPPORT_FEATURE_READ_bp 4
#define BLE_OTS_OACP_SUPPORT_FEATURE_WRITE_bp 5
#define BLE_OTS_OACP_SUPPORT_FEATURE_APPEND_bp 6
#define BLE_OTS_OACP_SUPPORT_FEATURE_TRUNCATE_bp 7
#define BLE_OTS_OACP_SUPPORT_FEATURE_PATCH_bp 8
#define BLE_OTS_OACP_SUPPORT_FEATURE_ABORT_bp 9
#define BLE_OTS_OLCP_SUPPORT_FEATURE_GOTO_bp 0
#define BLE_OTS_OLCP_SUPPORT_FEATURE_ORDER_bp 1
#define BLE_OTS_OLCP_SUPPORT_FEATURE_REQ_NUM_OBJECTS_bp 2
#define BLE_OTS_OLCP_SUPPORT_FEATURE_CLEAR_MARKING_bp 3
/**@brief Function for adding the features characteristic.
*
* @param[in] p_ots Object Transfer Service structure.
* @param[in] read_access Read security level for the feature characteristic.
* @param[in] p_feature_char_handles Pointer to the handles for the feature characteristic.
*/
static uint32_t feature_char_add(ble_ots_t * const p_ots,
security_req_t read_access,
ble_gatts_char_handles_t * p_feature_char_handles)
{
ble_add_char_params_t add_char_params;
uint8_t feature[BLE_OTS_FEATURE_LEN];
uint32_t oacp_features;
uint32_t olcp_features;
oacp_features = 0;
oacp_features |= (1 << BLE_OTS_OACP_SUPPORT_FEATURE_READ_bp);
oacp_features |= (1 << BLE_OTS_OACP_SUPPORT_FEATURE_APPEND_bp);
oacp_features |= (1 << BLE_OTS_OACP_SUPPORT_FEATURE_TRUNCATE_bp);
oacp_features |= (1 << BLE_OTS_OACP_SUPPORT_FEATURE_PATCH_bp);
oacp_features |= (1 << BLE_OTS_OACP_SUPPORT_FEATURE_ABORT_bp);
olcp_features = 0;
uint32_t i = 0;
i += uint32_encode(oacp_features, &feature[i]);
i += uint32_encode(olcp_features, &feature[i]);
memset(&add_char_params, 0, sizeof(add_char_params));
add_char_params.uuid = BLE_UUID_OTS_FEATURES;
add_char_params.uuid_type = BLE_UUID_TYPE_BLE;
add_char_params.max_len = BLE_OTS_FEATURE_LEN;
add_char_params.init_len = BLE_OTS_FEATURE_LEN;
add_char_params.p_init_value = &feature[0];
add_char_params.char_props.read = 1;
add_char_params.read_access = read_access;
return characteristic_add(p_ots->service_handle,
&add_char_params,
p_feature_char_handles);
}
/**@brief Function for handling the Connect event.
*
* @param[in] p_ots Object Transfer Service structure.
* @param[in] p_ble_evt Event received from the BLE stack.
*/
static void on_connect(ble_ots_t * p_ots, ble_evt_t const * p_ble_evt)
{
ret_code_t err_code;
p_ots->conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
err_code = nrf_ble_gq_conn_handle_register(p_ots->p_gatt_queue,
p_ble_evt->evt.gap_evt.conn_handle);
if ((p_ots->error_handler != NULL) &&
(err_code != NRF_SUCCESS))
{
p_ots->error_handler(err_code);
}
}
/**@brief Function for handling the BLE_GAP_EVT_DISCONNECTED event.
*
* @param[in] p_ots OTS Service Structure.
* @param[in] p_ble_evt Pointer to the event received from BLE stack.
*/
static void on_disconnect(ble_ots_t * p_ots, ble_evt_t const * p_ble_evt)
{
p_ots->conn_handle = BLE_CONN_HANDLE_INVALID;
}
uint32_t ble_ots_init(ble_ots_t * p_ots, ble_ots_init_t * p_ots_init)
{
if ((p_ots == NULL) || (p_ots_init == NULL))
{
return NRF_ERROR_NULL;
}
if (p_ots_init->p_object == NULL)
{
return NRF_ERROR_NULL;
}
if (p_ots_init->p_gatt_queue == NULL)
{
return NRF_ERROR_NULL;
}
p_ots->conn_handle = BLE_CONN_HANDLE_INVALID;
p_ots->error_handler = p_ots_init->error_handler;
p_ots->evt_handler = p_ots_init->evt_handler;
p_ots->p_current_object = p_ots_init->p_object;
p_ots->error_handler = p_ots_init->error_handler;
p_ots->evt_handler = p_ots_init->evt_handler;
p_ots->p_current_object = p_ots_init->p_object;
p_ots->p_gatt_queue = p_ots_init->p_gatt_queue;
ble_uuid_t service_uuid =
{
.uuid = BLE_UUID_OTS_SERVICE,
.type = BLE_UUID_TYPE_BLE
};
uint32_t err_code;
err_code = fds_init();
if (err_code != NRF_SUCCESS)
{
return err_code;
}
err_code = sd_ble_gatts_service_add(BLE_GATTS_SRVC_TYPE_PRIMARY,
&service_uuid,
&(p_ots->service_handle));
if (err_code != NRF_SUCCESS)
{
return err_code;
}
err_code = feature_char_add(p_ots, p_ots_init->feature_char_read_access, &p_ots->feature_handles);
if (err_code != NRF_SUCCESS)
{
return err_code;
}
err_code = ble_ots_object_representation_init(&p_ots->object_chars, &p_ots_init->object_chars_init);
if (err_code != NRF_SUCCESS)
{
return err_code;
}
err_code = ble_ots_oacp_init(&p_ots->oacp_chars, &p_ots_init->oacp_init);
if (err_code != NRF_SUCCESS)
{
return err_code;
}
p_ots->oacp_chars.ots_l2cap.conn_mps = p_ots_init->rx_mps;
p_ots->oacp_chars.ots_l2cap.conn_mtu = p_ots_init->rx_mtu;
return NRF_SUCCESS;
}
void ble_ots_on_ble_evt(ble_evt_t const * p_ble_evt, void * p_context)
{
ble_ots_t * p_ots;
p_ots = (ble_ots_t*) p_context;
if ((p_ots == NULL) || (p_ble_evt == NULL))
{
return;
}
ble_ots_oacp_on_ble_evt(&p_ots->oacp_chars, p_ble_evt);
ble_ots_object_on_ble_evt(&p_ots->object_chars, p_ble_evt);
switch (p_ble_evt->header.evt_id)
{
case BLE_GAP_EVT_CONNECTED:
on_connect(p_ots, p_ble_evt);
break;
case BLE_GAP_EVT_DISCONNECTED:
on_disconnect(p_ots, p_ble_evt);
break;
default:
// No implementation needed.
break;
}
}