/** * 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 #include #include #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; }