move components to SDK dir

SDK/12.3.0_d7731ad/components/libraries/atomic_fifo/app_atfifo.c

@@ -0,0 +1,159 @@
+/**
+ * Copyright (c) 2011 - 2017, 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 "app_atfifo.h"
+#include "app_atfifo_internal.h"
+#include <string.h>
+#include "app_util.h"
+
+
+/* Unions testing */
+STATIC_ASSERT(sizeof(nrf_atfifo_postag_t) == sizeof(uint32_t));
+
+
+ret_code_t app_atfifo_init(app_atfifo_t * const p_fifo, void * p_buf, uint16_t buf_size, uint16_t item_size)
+{
+    if(NULL == p_buf)
+    {
+        return NRF_ERROR_NULL;
+    }
+    if(0 != (buf_size % 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;
+
+    return NRF_SUCCESS;
+}
+
+
+ret_code_t app_atfifo_clear(app_atfifo_t * const p_fifo)
+{
+    bool resleased = app_atfifo_space_clear(p_fifo);
+    return resleased ? NRF_SUCCESS : NRF_ERROR_BUSY;
+}
+
+
+ret_code_t app_atfifo_put(app_atfifo_t * const p_fifo, void const * p_var, size_t size, bool * const p_visible)
+{
+    app_atfifo_wcontext_t context;
+    bool visible;
+    void * p_d = app_atfifo_wopen(p_fifo, &context, size);
+    if(NULL == p_d)
+    {
+        return NRF_ERROR_NO_MEM;
+    }
+
+    memcpy(p_d, p_var, size);
+
+    visible = app_atfifo_wcommit(p_fifo, &context);
+    if(NULL != p_visible)
+    {
+        *p_visible = visible;
+    }
+    return NRF_SUCCESS;
+}
+
+
+void * app_atfifo_wopen_internal(app_atfifo_t * const p_fifo, app_atfifo_wcontext_t * p_context)
+{
+    if(app_atfifo_wspace_req(p_fifo, &(p_context->last_tail)))
+    {
+        return ((uint8_t*)(p_fifo->p_buf)) + p_context->last_tail.pos.wr;
+    }
+    return NULL;
+}
+
+
+bool app_atfifo_wcommit(app_atfifo_t * const p_fifo, app_atfifo_wcontext_t * p_context)
+{
+    if((p_context->last_tail.pos.wr) == (p_context->last_tail.pos.rd))
+    {
+        app_atfifo_wspace_close(p_fifo);
+        return true;
+    }
+    return false;
+}
+
+
+ret_code_t app_atfifo_get(app_atfifo_t * const p_fifo, void * const p_var, size_t size, bool * p_released)
+{
+    app_atfifo_rcontext_t context;
+    bool released;
+    void const * p_s = app_atfifo_ropen(p_fifo, &context, size);
+    if(NULL == p_s)
+    {
+        return NRF_ERROR_NOT_FOUND;
+    }
+
+    memcpy(p_var, p_s, size);
+
+    released = app_atfifo_rflush(p_fifo, &context);
+    if(NULL != p_released)
+    {
+        *p_released = released;
+    }
+    return NRF_SUCCESS;
+}
+
+
+void const * app_atfifo_ropen_internal(app_atfifo_t * const p_fifo, app_atfifo_rcontext_t * p_context)
+{
+    if(app_atfifo_rspace_req(p_fifo, &(p_context->last_head)))
+    {
+        return ((uint8_t*)(p_fifo->p_buf)) + p_context->last_head.pos.rd;
+    }
+    return NULL;
+}
+
+
+bool app_atfifo_rflush(app_atfifo_t * const p_fifo, app_atfifo_rcontext_t * p_context)
+{
+    if((p_context->last_head.pos.wr) == (p_context->last_head.pos.rd))
+    {
+        app_atfifo_rspace_close(p_fifo);
+        return true;
+    }
+    return false;
+}