318 lines
12 KiB
C
318 lines
12 KiB
C
/**
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* Copyright (c) 2016 - 2020, Nordic Semiconductor ASA
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*
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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, except as embedded into a Nordic
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* Semiconductor ASA integrated circuit in a product or a software update for
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* such product, must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other
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* 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 its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* 4. This software, with or without modification, must only be used with a
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* Nordic Semiconductor ASA integrated circuit.
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*
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* 5. Any software provided in binary form under this license must not be reverse
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* engineered, decompiled, modified and/or disassembled.
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*
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* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include "sdk_common.h"
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#if NRF_MODULE_ENABLED(NRF_CLI_BLE_UART)
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#include "nrf_cli_ble_uart.h"
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#include "ble_nus.h"
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#include "nrf_ringbuf.h"
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#include "app_timer.h"
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#include "nrf_assert.h"
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#include "nrf_ble_gatt.h"
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#define NRF_LOG_MODULE_NAME cli_ble
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#if NRF_CLI_BLE_UART_CONFIG_LOG_ENABLED
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#define NRF_LOG_LEVEL NRF_CLI_BLE_UART_CONFIG_LOG_LEVEL
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#define NRF_LOG_INFO_COLOR NRF_CLI_BLE_UART_CONFIG_INFO_COLOR
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#define NRF_LOG_DEBUG_COLOR NRF_CLI_BLE_UART_CONFIG_DEBUG_COLOR
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#else //NRF_CLI_BLE_UART_CONFIG_LOG_ENABLED
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#define NRF_LOG_LEVEL 0
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#endif //NRF_CLI_BLE_UART_CONFIG_LOG_ENABLED
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#include "nrf_log.h"
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NRF_LOG_MODULE_REGISTER();
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#if NRF_CLI_BLE_UART_MAX_CLIENTS > NRF_SDH_BLE_TOTAL_LINK_COUNT
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#error "Too few BLE peripheral links are supported by the BLE SDH module for the maximal number \
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of BLE transport instances"
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#endif
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#define NRF_CLI_BLE_UART_TIMEOUT_MS 50
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#define OVERHEAD_LENGTH (OPCODE_LENGTH + HANDLE_LENGTH)
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BLE_NUS_DEF(m_nus, NRF_CLI_BLE_UART_MAX_CLIENTS);
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BLE_LINK_CTX_MANAGER_DEF(m_link_ctx_storage,
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NRF_CLI_BLE_UART_MAX_CLIENTS,
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sizeof(nrf_cli_ble_uart_internal_t *));
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static void tx_try(nrf_cli_ble_uart_internal_t * p_instance, uint32_t threshold)
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{
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uint8_t * p_out_data;
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size_t out_data_len =
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nrf_ble_gatt_eff_mtu_get(p_instance->p_gatt, p_instance->p_cb->conn_handle) -
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OVERHEAD_LENGTH;
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ret_code_t err_code = nrf_ringbuf_get(p_instance->p_tx_ringbuf,
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&p_out_data,
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&out_data_len,
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true);
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if (err_code == NRF_SUCCESS)
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{
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if (out_data_len >= threshold)
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{
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size_t req_data_len = out_data_len;
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err_code = ble_nus_data_send(&m_nus,
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p_out_data,
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(uint16_t*)&out_data_len,
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p_instance->p_cb->conn_handle);
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if ((err_code == NRF_ERROR_BUSY) || (err_code == NRF_ERROR_RESOURCES))
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{
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out_data_len = 0;
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}
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NRF_LOG_INFO("Conn_handle:%d TX req_len: %d, len: %d",
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p_instance->p_cb->conn_handle, req_data_len, out_data_len);
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NRF_LOG_HEXDUMP_DEBUG(p_out_data, out_data_len);
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err_code = nrf_ringbuf_free(p_instance->p_tx_ringbuf, out_data_len);
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ASSERT(err_code == NRF_SUCCESS);
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}
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else
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{
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err_code = nrf_ringbuf_free(p_instance->p_tx_ringbuf, 0);
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ASSERT(err_code == NRF_SUCCESS);
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}
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}
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}
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static void nus_data_handler(ble_nus_evt_t * p_nus_evt)
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{
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ret_code_t err_code = NRF_SUCCESS;
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nrf_cli_ble_uart_internal_t * p_instance;
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nrf_cli_ble_uart_internal_t ** pp_instance;
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err_code = blcm_link_ctx_get(&m_link_ctx_storage, p_nus_evt->conn_handle, (void *) &pp_instance);
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ASSERT(err_code == NRF_SUCCESS);
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p_instance = *pp_instance;
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switch (p_nus_evt->type)
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{
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case BLE_NUS_EVT_RX_DATA:
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{
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NRF_LOG_INFO("Conn_handle:%d, Received: %d",
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p_instance->p_cb->conn_handle, p_nus_evt->params.rx_data.length);
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NRF_LOG_HEXDUMP_DEBUG(p_nus_evt->params.rx_data.p_data, p_nus_evt->params.rx_data.length);
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size_t len = ((size_t) p_nus_evt->params.rx_data.length) & 0x0000FFFF;
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err_code = nrf_ringbuf_cpy_put(p_instance->p_rx_ringbuf,
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p_nus_evt->params.rx_data.p_data,
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(size_t *)&len);
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ASSERT(err_code == NRF_SUCCESS);
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p_instance->p_cb->handler(NRF_CLI_TRANSPORT_EVT_RX_RDY, p_instance->p_cb->p_context);
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break;
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}
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case BLE_NUS_EVT_TX_RDY:
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{
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//TX_Complete
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uint32_t max_tx_len = nrf_ble_gatt_eff_mtu_get(p_instance->p_gatt,
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p_instance->p_cb->conn_handle) -
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OVERHEAD_LENGTH;
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tx_try(p_instance, max_tx_len);
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p_instance->p_cb->handler(NRF_CLI_TRANSPORT_EVT_TX_RDY, p_instance->p_cb->p_context);
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break;
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}
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case BLE_NUS_EVT_COMM_STARTED:
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p_instance->p_cb->service_started = true;
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err_code = app_timer_start(*p_instance->p_timer,
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APP_TIMER_TICKS(NRF_CLI_BLE_UART_TIMEOUT_MS),
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p_instance);
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ASSERT(err_code == NRF_SUCCESS);
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NRF_LOG_INFO("Conn_handle:%d, communication started", p_instance->p_cb->conn_handle);
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break;
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case BLE_NUS_EVT_COMM_STOPPED:
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(void)app_timer_stop(*p_instance->p_timer);
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p_instance->p_cb->service_started = false;
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NRF_LOG_INFO("Conn_handle:%d, communication stopped", p_instance->p_cb->conn_handle);
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break;
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default:
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break;
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}
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}
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static void timer_handler(void * p_context)
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{
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nrf_cli_ble_uart_internal_t * p_instance = (nrf_cli_ble_uart_internal_t *) p_context;
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tx_try(p_instance, 1);
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ret_code_t err_code = app_timer_start(*p_instance->p_timer,
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APP_TIMER_TICKS(NRF_CLI_BLE_UART_TIMEOUT_MS), (void *)p_instance);
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ASSERT(err_code == NRF_SUCCESS);
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UNUSED_VARIABLE(err_code);
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UNUSED_PARAMETER(p_context);
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}
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ret_code_t nrf_cli_ble_uart_service_init(void)
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{
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ble_nus_init_t nus_init;
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memset(&nus_init, 0, sizeof(nus_init));
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nus_init.data_handler = nus_data_handler;
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return ble_nus_init(&m_nus, &nus_init);
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}
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static ret_code_t cli_ble_uart_init(nrf_cli_transport_t const * p_transport,
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void const * p_config,
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nrf_cli_transport_handler_t evt_handler,
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void * p_context)
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{
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ret_code_t err_code;
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nrf_cli_ble_uart_internal_t ** pp_instance;
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nrf_cli_ble_uart_internal_t * p_instance =
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CONTAINER_OF(p_transport, nrf_cli_ble_uart_internal_t, transport);
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nrf_cli_ble_uart_config_t * p_ble_uart_config = (nrf_cli_ble_uart_config_t *)p_config;
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p_instance->p_cb->handler = evt_handler;
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p_instance->p_cb->p_context = p_context;
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p_instance->p_cb->service_started = false;
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p_instance->p_cb->conn_handle = p_ble_uart_config->conn_handle;
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NRF_LOG_INFO("Conn_handle:%d init.", p_ble_uart_config->conn_handle);
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nrf_ringbuf_init(p_instance->p_rx_ringbuf);
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nrf_ringbuf_init(p_instance->p_tx_ringbuf);
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err_code = blcm_link_ctx_get(&m_link_ctx_storage,
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p_ble_uart_config->conn_handle,
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(void *) &pp_instance);
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VERIFY_SUCCESS(err_code);
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*pp_instance = p_instance;
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return NRF_SUCCESS;
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}
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static ret_code_t cli_ble_uart_uninit(nrf_cli_transport_t const * p_transport)
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{
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nrf_cli_ble_uart_internal_t * p_instance =
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CONTAINER_OF(p_transport, nrf_cli_ble_uart_internal_t, transport);
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NRF_LOG_INFO("Conn_handle:%d uninit.", p_instance->p_cb->conn_handle);
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ret_code_t ret = app_timer_stop(*p_instance->p_timer);
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return ret;
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}
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static ret_code_t cli_ble_uart_enable(nrf_cli_transport_t const * p_transport, bool blocking)
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{
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nrf_cli_ble_uart_internal_t * p_instance =
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CONTAINER_OF(p_transport, nrf_cli_ble_uart_internal_t, transport);
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NRF_LOG_INFO("Conn_handle:%d, enable blocking:%d", blocking, p_instance->p_cb->conn_handle);
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if (blocking)
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{
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return NRF_ERROR_NOT_SUPPORTED;
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}
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else
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{
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ret_code_t err_code = NRF_SUCCESS;
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if (!p_instance->p_cb->timer_created)
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{
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err_code = app_timer_create(p_instance->p_timer,
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APP_TIMER_MODE_SINGLE_SHOT,
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timer_handler);
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p_instance->p_cb->timer_created = true;
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}
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return err_code;
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}
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}
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static ret_code_t cli_ble_uart_read(nrf_cli_transport_t const * p_transport,
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void * p_data,
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size_t length,
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size_t * p_cnt)
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{
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ASSERT(p_cnt);
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nrf_cli_ble_uart_internal_t * p_instance =
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CONTAINER_OF(p_transport, nrf_cli_ble_uart_internal_t, transport);
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*p_cnt = length;
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ret_code_t err_code = nrf_ringbuf_cpy_get(p_instance->p_rx_ringbuf, p_data, p_cnt);
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if (*p_cnt)
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{
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NRF_LOG_INFO("Conn_handle:%d, read req_len:%d read_len: %d",
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p_instance->p_cb->conn_handle,
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length,
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*p_cnt);
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NRF_LOG_HEXDUMP_DEBUG(p_data, *p_cnt);
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}
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return err_code;
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}
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static ret_code_t cli_ble_uart_write(nrf_cli_transport_t const * p_transport,
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const void * p_data,
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size_t length,
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size_t * p_cnt)
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{
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ASSERT(p_cnt);
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nrf_cli_ble_uart_internal_t * p_instance =
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CONTAINER_OF(p_transport, nrf_cli_ble_uart_internal_t, transport);
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ret_code_t err_code = NRF_SUCCESS;
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if (p_instance->p_cb->service_started)
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{
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*p_cnt = length;
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err_code = nrf_ringbuf_cpy_put(p_instance->p_tx_ringbuf, p_data, p_cnt);
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NRF_LOG_INFO("Conn_handle:%d, write req:%d, buffered:%d",
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p_instance->p_cb->conn_handle, length, *p_cnt);
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NRF_LOG_HEXDUMP_DEBUG(p_data, *p_cnt);
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}
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else
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{
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NRF_LOG_INFO("Conn_handle:%d, write req:%d. Notifications not enabled",
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p_instance->p_cb->conn_handle, length);
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*p_cnt = length;
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p_instance->p_cb->handler(NRF_CLI_TRANSPORT_EVT_TX_RDY, p_instance->p_cb->p_context);
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}
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return err_code;
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}
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const nrf_cli_transport_api_t nrf_cli_ble_uart_transport_api = {
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.init = cli_ble_uart_init,
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.uninit = cli_ble_uart_uninit,
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.enable = cli_ble_uart_enable,
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.read = cli_ble_uart_read,
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.write = cli_ble_uart_write,
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};
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#endif //NRF_MODULE_ENABLED(NRF_CLI_BLE_UART)
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