31 lines
938 B
C
31 lines
938 B
C
/* ================================================================
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* jb_ringbuffer.h — 环形缓冲区（UART 接收）
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* ================================================================
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*/
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#ifndef _JB_RINGBUFFER_H
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#define _JB_RINGBUFFER_H
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#include <stdint.h>
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#include <stddef.h>
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/* 缓冲区配置 */
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#define JB_RB_CAPACITY 256 /* 缓冲区容量（2 的幂可优化取模运算）*/
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/* 环形缓冲区实例 */
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typedef struct
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{
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uint8_t buf[JB_RB_CAPACITY];
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uint16_t write; /* 写索引 */
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uint16_t read; /* 读索引 */
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uint16_t count; /* 已用字节数 */
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} jb_ringbuffer_t;
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void jbRbInit(jb_ringbuffer_t *rb);
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void jbRbPush(jb_ringbuffer_t *rb, uint8_t byte);
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uint8_t jbRbPop(jb_ringbuffer_t *rb);
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uint8_t jbRbPeek(const jb_ringbuffer_t *rb, uint16_t offset);
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uint16_t jbRbAvailable(const jb_ringbuffer_t *rb);
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void jbRbClear(jb_ringbuffer_t *rb);
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#endif /* _JB_RINGBUFFER_H */
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