| /** |
| * Copyright (c) 2011 - 2019, 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 <string.h> |
| #include <stdint.h> |
| #include <stdbool.h> |
| #include "app_util.h" |
| #include "nrf_atfifo.h" |
| #include "nrf_atfifo_internal.h" |
| |
| #if NRF_ATFIFO_CONFIG_LOG_ENABLED |
| #define NRF_LOG_LEVEL NRF_ATFIFO_CONFIG_LOG_LEVEL |
| #define NRF_LOG_INIT_FILTER_LEVEL NRF_ATFIFO_CONFIG_LOG_INIT_FILTER_LEVEL |
| #define NRF_LOG_INFO_COLOR NRF_ATFIFO_CONFIG_INFO_COLOR |
| #define NRF_LOG_DEBUG_COLOR NRF_ATFIFO_CONFIG_DEBUG_COLOR |
| #else |
| #define NRF_LOG_LEVEL 0 |
| #endif // NRF_ATFIFO_CONFIG_LOG_ENABLED |
| #include "nrf_log.h" |
| |
| /* Unions testing */ |
| STATIC_ASSERT(sizeof(nrf_atfifo_postag_t) == sizeof(uint32_t)); |
| |
| |
| ret_code_t nrf_atfifo_init(nrf_atfifo_t * const p_fifo, void * p_buf, uint16_t buf_size, uint16_t item_size) |
| { |
| if (NULL == p_buf) |
| { |
| NRF_LOG_INST_ERROR(p_fifo->p_log, "Initialization failed. p_buf == NULL"); |
| return NRF_ERROR_NULL; |
| } |
| if (0 != (buf_size % item_size)) |
| { |
| NRF_LOG_INST_ERROR(p_fifo->p_log, "Initialization failed. Buf_size not multiple of item_size"); |
| return NRF_ERROR_INVALID_LENGTH; |
| } |
| |
| p_fifo->p_buf = p_buf; |
| p_fifo->tail.tag = 0; |
| p_fifo->head.tag = 0; |
| p_fifo->buf_size = buf_size; |
| p_fifo->item_size = item_size; |
| |
| NRF_LOG_INST_INFO(p_fifo->p_log, "Initialized."); |
| return NRF_SUCCESS; |
| } |
| |
| |
| ret_code_t nrf_atfifo_clear(nrf_atfifo_t * const p_fifo) |
| { |
| bool released = nrf_atfifo_space_clear(p_fifo); |
| NRF_LOG_INST_INFO(p_fifo->p_log, "Cleared result:%s", released ? "success" : "busy"); |
| return released ? NRF_SUCCESS : NRF_ERROR_BUSY; |
| } |
| |
| |
| ret_code_t nrf_atfifo_alloc_put(nrf_atfifo_t * const p_fifo, void const * p_var, size_t size, bool * const p_visible) |
| { |
| nrf_atfifo_item_put_t context; |
| bool visible; |
| void * p_data = nrf_atfifo_item_alloc(p_fifo, &context); |
| if (NULL == p_data) |
| { |
| NRF_LOG_INST_WARNING(p_fifo->p_log, "Copying in element (0x%08X) failed - no space.", p_var); |
| return NRF_ERROR_NO_MEM; |
| } |
| |
| memcpy(p_data, p_var, size); |
| |
| visible = nrf_atfifo_item_put(p_fifo, &context); |
| if (NULL != p_visible) |
| { |
| *p_visible = visible; |
| } |
| NRF_LOG_INST_DEBUG(p_fifo->p_log, "Element (0x%08X) copied in.", p_var); |
| return NRF_SUCCESS; |
| } |
| |
| |
| void * nrf_atfifo_item_alloc(nrf_atfifo_t * const p_fifo, nrf_atfifo_item_put_t * p_context) |
| { |
| if (nrf_atfifo_wspace_req(p_fifo, &(p_context->last_tail))) |
| { |
| void * p_item = ((uint8_t*)(p_fifo->p_buf)) + p_context->last_tail.pos.wr; |
| NRF_LOG_INST_DEBUG(p_fifo->p_log, "Allocated element (0x%08X).", p_item); |
| return p_item; |
| } |
| NRF_LOG_INST_WARNING(p_fifo->p_log, "Allocation failed - no space."); |
| return NULL; |
| } |
| |
| |
| bool nrf_atfifo_item_put(nrf_atfifo_t * const p_fifo, nrf_atfifo_item_put_t * p_context) |
| { |
| if ((p_context->last_tail.pos.wr) == (p_context->last_tail.pos.rd)) |
| { |
| NRF_LOG_INST_DEBUG(p_fifo->p_log, "Put (uninterrupted)"); |
| nrf_atfifo_wspace_close(p_fifo); |
| return true; |
| } |
| NRF_LOG_INST_DEBUG(p_fifo->p_log, "Put (interrupted!)"); |
| return false; |
| } |
| |
| |
| ret_code_t nrf_atfifo_get_free(nrf_atfifo_t * const p_fifo, void * const p_var, size_t size, bool * p_released) |
| { |
| nrf_atfifo_item_get_t context; |
| bool released; |
| void const * p_s = nrf_atfifo_item_get(p_fifo, &context); |
| if (NULL == p_s) |
| { |
| NRF_LOG_INST_WARNING(p_fifo->p_log, "Copying out failed - no item in the FIFO."); |
| return NRF_ERROR_NOT_FOUND; |
| } |
| |
| memcpy(p_var, p_s, size); |
| |
| released = nrf_atfifo_item_free(p_fifo, &context); |
| if (NULL != p_released) |
| { |
| *p_released = released; |
| } |
| NRF_LOG_INST_DEBUG(p_fifo->p_log, "Element (0x%08X) copied out.", p_var); |
| return NRF_SUCCESS; |
| } |
| |
| |
| void * nrf_atfifo_item_get(nrf_atfifo_t * const p_fifo, nrf_atfifo_item_get_t * p_context) |
| { |
| if (nrf_atfifo_rspace_req(p_fifo, &(p_context->last_head))) |
| { |
| void * p_item = ((uint8_t*)(p_fifo->p_buf)) + p_context->last_head.pos.rd; |
| NRF_LOG_INST_DEBUG(p_fifo->p_log, "Get element: 0x%08X", p_item); |
| return p_item; |
| } |
| NRF_LOG_INST_WARNING(p_fifo->p_log, "Get failed - no item in the FIFO."); |
| return NULL; |
| } |
| |
| |
| bool nrf_atfifo_item_free(nrf_atfifo_t * const p_fifo, nrf_atfifo_item_get_t * p_context) |
| { |
| if ((p_context->last_head.pos.wr) == (p_context->last_head.pos.rd)) |
| { |
| NRF_LOG_INST_DEBUG(p_fifo->p_log, "Free (uninterrupted)"); |
| nrf_atfifo_rspace_close(p_fifo); |
| return true; |
| } |
| NRF_LOG_INST_DEBUG(p_fifo->p_log, "Free (interrupted)"); |
| return false; |
| } |