26 lines
768 B
C
26 lines
768 B
C
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#ifndef __RINGBUFFER_H
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#define __RINGBUFFER_H
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#include <rtthread.h>
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#include <string.h>
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struct rt_ringbuffer
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{
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rt_uint8_t *buffer_ptr;
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rt_uint16_t read_mirror : 1;
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rt_uint16_t read_index : 15;
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rt_uint16_t write_mirror : 1;
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rt_uint16_t write_index : 15;
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rt_int16_t buffer_size;
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};
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rt_inline enum rt_ringbuffer_state rt_ringbuffer_status(struct rt_ringbuffer *rb);
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rt_size_t rt_ringbuffer_data_len(struct rt_ringbuffer *rb);
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void rt_ringbuffer_init(struct rt_ringbuffer *rb,
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rt_uint8_t *pool,
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rt_int16_t size);
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rt_size_t rt_ringbuffer_putchar(struct rt_ringbuffer *rb, const rt_uint8_t ch);
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rt_size_t rt_ringbuffer_getchar(struct rt_ringbuffer *rb, rt_uint8_t *ch);
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#endif
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