#if !defined __RINGBUFFER_H
#define __RINGBUFFER_H

#include <inttypes.h>

typedef struct {
  uint8_t size;
  volatile uint8_t free;
  volatile uint8_t write_idx;
  volatile uint8_t read_idx;
  
  void (*idle_func)(void);
  
  uint8_t buffer[];
} ringbuffer_t;


#define RB_BUFSIZE(queue_len) (sizeof(ringbuffer_t)+(queue_len))

void ringbuf_init(void *ringbuffer, uint8_t buf_size, void (*IdleFunc)(void));
int8_t ringbuf_get(void *ringbuffer, uint8_t *ch);
int8_t ringbuf_get_nb(void *ringbuffer, uint8_t *ch);
int8_t ringbuf_put_nb(void *ringbuffer, uint8_t ch);
int8_t ringbuf_get_num_waiting(void * ringbuffer);

#endif