ringbuffer.h

#ifndef RINGBUFFER_H
#define RINGBUFFER_H
#include "stdint.h"
typedef struct ringbuffer {
  char                  buf[1024];
  uint16_t              readptr;
  uint16_t volatile     writeptr;       // point to next position to write
  uint32_t volatile     bytes;          // number of bytes readable
} _ringbuffer;
 
/* \brief add a byte to the ringbuffer, if buffer is full, overwrites oldest byte */
void ringbuffer_add_byte(struct ringbuffer *r, uint8_t b);
 
/* \brief return a byte. if return value is >255, no value is available */
uint16_t ringbuffer_get_byte(struct ringbuffer *r);
 
void ringbuffer_init(struct ringbuffer *r);
/*
 *\brief get upto a delimiter, return number of chars.
 */
int ringbuffer_get_to_delimiter(struct ringbuffer *r, char delimiter, char *outbuf, int outbufsize);
 
#endif