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#ifndef __circular_buffer_h
#define __circular_buffer_h

#define BUFFER_OK       0
#define BUFFER_ERROR    -1
#define BUFFER_SIZE     256

typedef struct __BUFFER_DATA {
    unsigned char index_read;
    unsigned char index_write;
    unsigned char stored_length;
} BUFFER_DATA;

void buffer_init(BUFFER_DATA *);
char buffer_insert(unsigned char length, unsigned char *msg);
char buffer_read(unsigned char length, unsigned char *dest);

#endif