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46 lines
1.8 KiB
46 lines
1.8 KiB
5 months ago
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/******************************************************************************
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* Copyright (c) 2015-2023 jiangxiaogang<kerndev@foxmail.com>
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*
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* This file is part of KLite distribution.
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*
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* KLite is free software, you can redistribute it and/or modify it under
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* the MIT Licence.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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******************************************************************************/
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#ifndef __FIFO_H
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#define __FIFO_H
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typedef struct
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{
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uint8_t *buf;
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uint32_t size;
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uint32_t wp;
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uint32_t rp;
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}fifo_t;
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void fifo_init(fifo_t *fifo, void *buf, uint32_t size);
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uint32_t fifo_read(fifo_t *fifo, void *buf, uint32_t size);
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uint32_t fifo_write(fifo_t *fifo, void *buf, uint32_t size);
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void fifo_clear(fifo_t *fifo);
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uint32_t fifo_get_used(fifo_t *fifo);
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uint32_t fifo_get_free(fifo_t *fifo);
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#endif
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