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#ifndef __circular_buffer_h
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#define __circular_buffer_h
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#define BUFFER_OK 0
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#define BUFFER_ERROR -1
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#define BUFFER_SIZE 256
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typedef struct __BUFFER_DATA {
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unsigned char index_read;
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unsigned char index_write;
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unsigned char stored_length;
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} BUFFER_DATA;
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void buffer_init(BUFFER_DATA *);
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char buffer_insert(unsigned char length, unsigned char *msg);
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char buffer_read(unsigned char length, unsigned char *dest);
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#endif
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