hdlc_common.h

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/*
 * ether2ser — Ethernet <-> synchronous V.24 (RS-232/V.28) bridge
 *
 * File:    src/protocol/hdlc_common.h
 * Purpose: HDLC common utilities API (CRC and shared helpers).
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Copyright (c) 2026 Florian <f.leuze@outlook.de>
 */
 
#ifndef HDLC_COMMON_H
#define HDLC_COMMON_H
 
// Related headers
 
// Standard library headers
#include <stddef.h>
#include <stdint.h>
 
// Project Headers
 
// Generated headers
 
#define HDLC_FLAG_BYTE 0x7E
#define HDLC_ESCAPE_BYTE 0x7D
#define HDLC_ESCAPE_XOR 0x20
typedef struct
{
    uint8_t* payload;
    size_t   length;
    size_t   capacity;
} HDLC_FRAME_T;
 
uint16_t hdlc_crc16(const uint8_t* payload, size_t num_bytes);
 
#endif /* HDLC_COMMON_H */