diff options
Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/atomic_fifo/nrf_atfifo.c')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/atomic_fifo/nrf_atfifo.c | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/atomic_fifo/nrf_atfifo.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/atomic_fifo/nrf_atfifo.c new file mode 100644 index 0000000..5d7a8ff --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/atomic_fifo/nrf_atfifo.c @@ -0,0 +1,189 @@ +/** + * Copyright (c) 2011 - 2018, 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; +} |