45 lines
745 B
C
45 lines
745 B
C
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#ifndef KIMODEM_TLV_H
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#define KIMODEM_TLV_H
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#include <cstdint>
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#include "Arena.h"
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#ifndef TLV_MAX_LEN
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#define TLV_MAX_LEN 253
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#endif
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#define TAG_EMPTY 0
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namespace TLV {
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struct Record {
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uint8_t Tag;
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uint8_t Len;
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char Val[TLV_MAX_LEN];
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};
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uint8_t *write_to_memory(Arena &, uint8_t *, Record &);
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void read_from_memory(Record &, uint8_t *);
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void set_record(Record &, uint8_t, uint8_t, const char *);
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void delete_record(Arena &, uint8_t *);
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/*
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* returns a pointer to memory where the record was found,
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* e.g. find_tag(...)[0] is the tag of the found record.
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*/
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uint8_t *find_tag(Arena &, uint8_t *, Record &);
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uint8_t *find_empty(Arena &, uint8_t *);
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uint8_t *skip_record(Record &, uint8_t *);
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} // namespace TLV
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#endif
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