mirror of
https://github.com/sakumisu/CherryUSB.git
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57 lines
2.2 KiB
C
57 lines
2.2 KiB
C
/*
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* Copyright (c) 2022, Egahp
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef CHRY_RINGBUFFER_H
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#define CHRY_RINGBUFFER_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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#include <stdbool.h>
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typedef struct {
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uint32_t in; /*!< Define the write pointer. */
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uint32_t out; /*!< Define the read pointer. */
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uint32_t mask; /*!< Define the write and read pointer mask. */
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void *pool; /*!< Define the memory pointer. */
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} chry_ringbuffer_t;
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extern int chry_ringbuffer_init(chry_ringbuffer_t *rb, void *pool, uint32_t size);
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extern void chry_ringbuffer_reset(chry_ringbuffer_t *rb);
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extern void chry_ringbuffer_reset_read(chry_ringbuffer_t *rb);
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extern uint32_t chry_ringbuffer_get_size(chry_ringbuffer_t *rb);
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extern uint32_t chry_ringbuffer_get_used(chry_ringbuffer_t *rb);
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extern uint32_t chry_ringbuffer_get_free(chry_ringbuffer_t *rb);
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extern bool chry_ringbuffer_check_full(chry_ringbuffer_t *rb);
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extern bool chry_ringbuffer_check_empty(chry_ringbuffer_t *rb);
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extern bool chry_ringbuffer_write_byte(chry_ringbuffer_t *rb, uint8_t byte);
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extern bool chry_ringbuffer_overwrite_byte(chry_ringbuffer_t *rb, uint8_t byte);
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extern bool chry_ringbuffer_peek_byte(chry_ringbuffer_t *rb, uint8_t *byte);
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extern bool chry_ringbuffer_read_byte(chry_ringbuffer_t *rb, uint8_t *byte);
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extern bool chry_ringbuffer_drop_byte(chry_ringbuffer_t *rb);
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extern uint32_t chry_ringbuffer_write(chry_ringbuffer_t *rb, void *data, uint32_t size);
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extern uint32_t chry_ringbuffer_overwrite(chry_ringbuffer_t *rb, void *data, uint32_t size);
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extern uint32_t chry_ringbuffer_peek(chry_ringbuffer_t *rb, void *data, uint32_t size);
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extern uint32_t chry_ringbuffer_read(chry_ringbuffer_t *rb, void *data, uint32_t size);
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extern uint32_t chry_ringbuffer_drop(chry_ringbuffer_t *rb, uint32_t size);
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extern void *chry_ringbuffer_linear_write_setup(chry_ringbuffer_t *rb, uint32_t *size);
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extern void *chry_ringbuffer_linear_read_setup(chry_ringbuffer_t *rb, uint32_t *size);
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extern uint32_t chry_ringbuffer_linear_write_done(chry_ringbuffer_t *rb, uint32_t size);
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extern uint32_t chry_ringbuffer_linear_read_done(chry_ringbuffer_t *rb, uint32_t size);
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#ifdef __cplusplus
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}
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#endif
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#endif
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