hdlc_common.h File Reference

#include <stddef.h>
#include <stdint.h>

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Data Structures
struct	HDLC_FRAME_T
	Generic HDLC frame buffer descriptor. More...

Macros
HDLC Constants
#define	HDLC_FLAG_BYTE   0x7E
#define	HDLC_ESCAPE_BYTE   0x7D
#define	HDLC_ESCAPE_XOR   0x20

Functions
uint16_t	hdlc_crc16 (const uint8_t *payload, size_t num_bytes)
	Compute HDLC CRC16 (FCS) over a payload.

Macro Definition Documentation

HDLC_ESCAPE_BYTE

#define HDLC_ESCAPE_BYTE   0x7D

Definition at line 30 of file hdlc_common.h.

HDLC_ESCAPE_XOR

#define HDLC_ESCAPE_XOR   0x20

Definition at line 31 of file hdlc_common.h.

HDLC_FLAG_BYTE

#define HDLC_FLAG_BYTE   0x7E

Definition at line 29 of file hdlc_common.h.

Function Documentation

hdlc_crc16()

uint16_t hdlc_crc16	(	const uint8_t *	payload,
		size_t	num_bytes
	)

Compute HDLC CRC16 (FCS) over a payload.

Parameters

payload	Input data bytes.
num_bytes	Number of bytes in payload.

Returns

Computed CRC16 value.

Definition at line 45 of file hdlc_common.c.

References crc16_ccitt_false().

Referenced by hdlc_decode(), hdlc_decode_byte(), hdlc_encode(), and hdlc_encode_byte().

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