/** * 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_LOG) && NRF_MODULE_ENABLED(NRF_LOG_BACKEND_UART) #include "nrf_log_backend_uart.h" #include "nrf_log_backend_serial.h" #include "nrf_log_internal.h" #include "nrf_drv_uart.h" #include "app_error.h" nrf_drv_uart_t m_uart = NRF_DRV_UART_INSTANCE(0); static uint8_t m_string_buff[NRF_LOG_BACKEND_UART_TEMP_BUFFER_SIZE]; static volatile bool m_xfer_done; static bool m_async_mode; static void uart_evt_handler(nrf_drv_uart_event_t * p_event, void * p_context) { m_xfer_done = true; } static void uart_init(bool async_mode) { nrf_drv_uart_config_t config = NRF_DRV_UART_DEFAULT_CONFIG; config.pseltxd = NRF_LOG_BACKEND_UART_TX_PIN; config.pselrxd = NRF_UART_PSEL_DISCONNECTED; config.pselcts = NRF_UART_PSEL_DISCONNECTED; config.pselrts = NRF_UART_PSEL_DISCONNECTED; config.baudrate = (nrf_uart_baudrate_t)NRF_LOG_BACKEND_UART_BAUDRATE; ret_code_t err_code = nrf_drv_uart_init(&m_uart, &config, async_mode ? uart_evt_handler : NULL); APP_ERROR_CHECK(err_code); m_async_mode = async_mode; } void nrf_log_backend_uart_init(void) { bool async_mode = NRF_LOG_DEFERRED ? true : false; uart_init(async_mode); } static void serial_tx(void const * p_context, char const * p_buffer, size_t len) { uint8_t len8 = (uint8_t)(len & 0x000000FF); m_xfer_done = false; ret_code_t err_code = nrf_drv_uart_tx(&m_uart, (uint8_t *)p_buffer, len8); APP_ERROR_CHECK(err_code); /* wait for completion since buffer is reused*/ while (m_async_mode && (m_xfer_done == false)) { } } static void nrf_log_backend_uart_put(nrf_log_backend_t const * p_backend, nrf_log_entry_t * p_msg) { nrf_log_backend_serial_put(p_backend, p_msg, m_string_buff, NRF_LOG_BACKEND_UART_TEMP_BUFFER_SIZE, serial_tx); } static void nrf_log_backend_uart_flush(nrf_log_backend_t const * p_backend) { } static void nrf_log_backend_uart_panic_set(nrf_log_backend_t const * p_backend) { nrf_drv_uart_uninit(&m_uart); uart_init(false); } const nrf_log_backend_api_t nrf_log_backend_uart_api = { .put = nrf_log_backend_uart_put, .flush = nrf_log_backend_uart_flush, .panic_set = nrf_log_backend_uart_panic_set, }; #endif //NRF_MODULE_ENABLED(NRF_LOG) && NRF_MODULE_ENABLED(NRF_LOG_BACKEND_UART)