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18 lines
536 B
18 lines
536 B
9 years ago
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#ifndef _RING_BUF_H_
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#define _RING_BUF_H_
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#include <esp8266.h>
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typedef struct {
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uint8_t* p_o; /**< Original pointer */
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uint8_t* volatile p_r; /**< Read pointer */
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uint8_t* volatile p_w; /**< Write pointer */
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volatile int32_t fill_cnt; /**< Number of filled slots */
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int32_t size; /**< Buffer size */
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} RINGBUF;
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int16_t ICACHE_FLASH_ATTR RINGBUF_Init(RINGBUF* r, uint8_t* buf, int32_t size);
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int16_t ICACHE_FLASH_ATTR RINGBUF_Put(RINGBUF* r, uint8_t c);
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int16_t ICACHE_FLASH_ATTR RINGBUF_Get(RINGBUF* r, uint8_t* c);
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#endif
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