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- /**
- * 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)
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