/** * Copyright (c) 2016 - 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 "sdk_common.h" #if NRF_MODULE_ENABLED(NRF_CLI_BLE_UART) #include "nrf_cli_ble_uart.h" #include "ble_nus.h" #include "nrf_ringbuf.h" #include "app_timer.h" #include "nrf_assert.h" #include "nrf_ble_gatt.h" #define NRF_LOG_MODULE_NAME cli_ble #if NRF_CLI_BLE_UART_CONFIG_LOG_ENABLED #define NRF_LOG_LEVEL NRF_CLI_BLE_UART_CONFIG_LOG_LEVEL #define NRF_LOG_INFO_COLOR NRF_CLI_BLE_UART_CONFIG_INFO_COLOR #define NRF_LOG_DEBUG_COLOR NRF_CLI_BLE_UART_CONFIG_DEBUG_COLOR #else //NRF_CLI_BLE_UART_CONFIG_LOG_ENABLED #define NRF_LOG_LEVEL 0 #endif //NRF_CLI_BLE_UART_CONFIG_LOG_ENABLED #include "nrf_log.h" NRF_LOG_MODULE_REGISTER(); #if NRF_CLI_BLE_UART_MAX_CLIENTS > NRF_SDH_BLE_TOTAL_LINK_COUNT #error "Too few BLE peripheral links are supported by the BLE SDH module for the maximal number \ of BLE transport instances" #endif #define NRF_CLI_BLE_UART_TIMEOUT_MS 50 #define OVERHEAD_LENGTH (OPCODE_LENGTH + HANDLE_LENGTH) BLE_NUS_DEF(m_nus, NRF_CLI_BLE_UART_MAX_CLIENTS); BLE_LINK_CTX_MANAGER_DEF(m_link_ctx_storage, NRF_CLI_BLE_UART_MAX_CLIENTS, sizeof(nrf_cli_ble_uart_internal_t *)); static void tx_try(nrf_cli_ble_uart_internal_t * p_instance, uint32_t threshold) { uint8_t * p_out_data; size_t out_data_len = nrf_ble_gatt_eff_mtu_get(p_instance->p_gatt, p_instance->p_cb->conn_handle) - OVERHEAD_LENGTH; ret_code_t err_code = nrf_ringbuf_get(p_instance->p_tx_ringbuf, &p_out_data, &out_data_len, true); if (err_code == NRF_SUCCESS) { if (out_data_len >= threshold) { size_t req_data_len = out_data_len; err_code = ble_nus_data_send(&m_nus, p_out_data, (uint16_t*)&out_data_len, p_instance->p_cb->conn_handle); if ((err_code == NRF_ERROR_BUSY) || (err_code == NRF_ERROR_RESOURCES)) { out_data_len = 0; } NRF_LOG_INFO("Conn_handle:%d TX req_len: %d, len: %d", p_instance->p_cb->conn_handle, req_data_len, out_data_len); NRF_LOG_HEXDUMP_DEBUG(p_out_data, out_data_len); err_code = nrf_ringbuf_free(p_instance->p_tx_ringbuf, out_data_len); ASSERT(err_code == NRF_SUCCESS); } else { err_code = nrf_ringbuf_free(p_instance->p_tx_ringbuf, 0); ASSERT(err_code == NRF_SUCCESS); } } } static void nus_data_handler(ble_nus_evt_t * p_nus_evt) { ret_code_t err_code = NRF_SUCCESS; nrf_cli_ble_uart_internal_t * p_instance; nrf_cli_ble_uart_internal_t ** pp_instance; err_code = blcm_link_ctx_get(&m_link_ctx_storage, p_nus_evt->conn_handle, (void *) &pp_instance); ASSERT(err_code == NRF_SUCCESS); p_instance = *pp_instance; switch (p_nus_evt->type) { case BLE_NUS_EVT_RX_DATA: { NRF_LOG_INFO("Conn_handle:%d, Received: %d", p_instance->p_cb->conn_handle, p_nus_evt->params.rx_data.length); NRF_LOG_HEXDUMP_DEBUG(p_nus_evt->params.rx_data.p_data, p_nus_evt->params.rx_data.length); size_t len = ((size_t) p_nus_evt->params.rx_data.length) & 0x0000FFFF; err_code = nrf_ringbuf_cpy_put(p_instance->p_rx_ringbuf, p_nus_evt->params.rx_data.p_data, (size_t *)&len); ASSERT(err_code == NRF_SUCCESS); p_instance->p_cb->handler(NRF_CLI_TRANSPORT_EVT_RX_RDY, p_instance->p_cb->p_context); break; } case BLE_NUS_EVT_TX_RDY: { //TX_Complete uint32_t max_tx_len = nrf_ble_gatt_eff_mtu_get(p_instance->p_gatt, p_instance->p_cb->conn_handle) - OVERHEAD_LENGTH; tx_try(p_instance, max_tx_len); p_instance->p_cb->handler(NRF_CLI_TRANSPORT_EVT_TX_RDY, p_instance->p_cb->p_context); break; } case BLE_NUS_EVT_COMM_STARTED: p_instance->p_cb->service_started = true; err_code = app_timer_start(*p_instance->p_timer, APP_TIMER_TICKS(NRF_CLI_BLE_UART_TIMEOUT_MS), p_instance); ASSERT(err_code == NRF_SUCCESS); NRF_LOG_INFO("Conn_handle:%d, communication started", p_instance->p_cb->conn_handle); break; case BLE_NUS_EVT_COMM_STOPPED: (void)app_timer_stop(*p_instance->p_timer); p_instance->p_cb->service_started = false; NRF_LOG_INFO("Conn_handle:%d, communication stopped", p_instance->p_cb->conn_handle); break; default: break; } } static void timer_handler(void * p_context) { nrf_cli_ble_uart_internal_t * p_instance = (nrf_cli_ble_uart_internal_t *) p_context; tx_try(p_instance, 1); ret_code_t err_code = app_timer_start(*p_instance->p_timer, APP_TIMER_TICKS(NRF_CLI_BLE_UART_TIMEOUT_MS), (void *)p_instance); ASSERT(err_code == NRF_SUCCESS); UNUSED_VARIABLE(err_code); UNUSED_PARAMETER(p_context); } ret_code_t nrf_cli_ble_uart_service_init(void) { ble_nus_init_t nus_init; memset(&nus_init, 0, sizeof(nus_init)); nus_init.data_handler = nus_data_handler; return ble_nus_init(&m_nus, &nus_init); } static ret_code_t cli_ble_uart_init(nrf_cli_transport_t const * p_transport, void const * p_config, nrf_cli_transport_handler_t evt_handler, void * p_context) { ret_code_t err_code; nrf_cli_ble_uart_internal_t ** pp_instance; nrf_cli_ble_uart_internal_t * p_instance = CONTAINER_OF(p_transport, nrf_cli_ble_uart_internal_t, transport); nrf_cli_ble_uart_config_t * p_ble_uart_config = (nrf_cli_ble_uart_config_t *)p_config; p_instance->p_cb->handler = evt_handler; p_instance->p_cb->p_context = p_context; p_instance->p_cb->service_started = false; p_instance->p_cb->conn_handle = p_ble_uart_config->conn_handle; NRF_LOG_INFO("Conn_handle:%d init.", p_ble_uart_config->conn_handle); nrf_ringbuf_init(p_instance->p_rx_ringbuf); nrf_ringbuf_init(p_instance->p_tx_ringbuf); err_code = blcm_link_ctx_get(&m_link_ctx_storage, p_ble_uart_config->conn_handle, (void *) &pp_instance); VERIFY_SUCCESS(err_code); *pp_instance = p_instance; return NRF_SUCCESS; } static ret_code_t cli_ble_uart_uninit(nrf_cli_transport_t const * p_transport) { nrf_cli_ble_uart_internal_t * p_instance = CONTAINER_OF(p_transport, nrf_cli_ble_uart_internal_t, transport); NRF_LOG_INFO("Conn_handle:%d uninit.", p_instance->p_cb->conn_handle); ret_code_t ret = app_timer_stop(*p_instance->p_timer); return ret; } static ret_code_t cli_ble_uart_enable(nrf_cli_transport_t const * p_transport, bool blocking) { nrf_cli_ble_uart_internal_t * p_instance = CONTAINER_OF(p_transport, nrf_cli_ble_uart_internal_t, transport); NRF_LOG_INFO("Conn_handle:%d, enable blocking:%d", blocking, p_instance->p_cb->conn_handle); if (blocking) { return NRF_ERROR_NOT_SUPPORTED; } else { ret_code_t err_code = NRF_SUCCESS; if (!p_instance->p_cb->timer_created) { err_code = app_timer_create(p_instance->p_timer, APP_TIMER_MODE_SINGLE_SHOT, timer_handler); p_instance->p_cb->timer_created = true; } return err_code; } } static ret_code_t cli_ble_uart_read(nrf_cli_transport_t const * p_transport, void * p_data, size_t length, size_t * p_cnt) { ASSERT(p_cnt); nrf_cli_ble_uart_internal_t * p_instance = CONTAINER_OF(p_transport, nrf_cli_ble_uart_internal_t, transport); *p_cnt = length; ret_code_t err_code = nrf_ringbuf_cpy_get(p_instance->p_rx_ringbuf, p_data, p_cnt); if (*p_cnt) { NRF_LOG_INFO("Conn_handle:%d, read req_len:%d read_len: %d", p_instance->p_cb->conn_handle, length, *p_cnt); NRF_LOG_HEXDUMP_DEBUG(p_data, *p_cnt); } return err_code; } static ret_code_t cli_ble_uart_write(nrf_cli_transport_t const * p_transport, const void * p_data, size_t length, size_t * p_cnt) { ASSERT(p_cnt); nrf_cli_ble_uart_internal_t * p_instance = CONTAINER_OF(p_transport, nrf_cli_ble_uart_internal_t, transport); ret_code_t err_code = NRF_SUCCESS; if (p_instance->p_cb->service_started) { *p_cnt = length; err_code = nrf_ringbuf_cpy_put(p_instance->p_tx_ringbuf, p_data, p_cnt); NRF_LOG_INFO("Conn_handle:%d, write req:%d, buffered:%d", p_instance->p_cb->conn_handle, length, *p_cnt); NRF_LOG_HEXDUMP_DEBUG(p_data, *p_cnt); } else { NRF_LOG_INFO("Conn_handle:%d, write req:%d. Notifications not enabled", p_instance->p_cb->conn_handle, length); *p_cnt = length; p_instance->p_cb->handler(NRF_CLI_TRANSPORT_EVT_TX_RDY, p_instance->p_cb->p_context); } return err_code; } const nrf_cli_transport_api_t nrf_cli_ble_uart_transport_api = { .init = cli_ble_uart_init, .uninit = cli_ble_uart_uninit, .enable = cli_ble_uart_enable, .read = cli_ble_uart_read, .write = cli_ble_uart_write, }; #endif //NRF_MODULE_ENABLED(NRF_CLI_BLE_UART)