ERTMS/ETCS Level 2 Message-Level Codec Implementation (GP). More...

#include "ab_gp_ertms_train_message_codec.h"
#include "ab_gp_ertms_train_packet_codec.h"
#include "rte/oal/memory/rte_mem_util.h"

Include dependency graph for ab_gp_ertms_train_message_codec.c:

Functions
static void	write_track_to_train_header (uint8_t buf, size_t cap, size_t offset, const rbc_track_to_train_header_t *h)
bool	rbc_train_codec_encode_track_to_train (const rbc_train_outbound_msg_t msg, uint8_t out_buffer, size_t buffer_size, size_t *out_bytes_written)
	Encodes an outbound Track-to-Train message (Msg 2, 3, 6, 8, 9, 15, 16, 18, 24, 33, 34, 41) into wire bytes.
bool	rbc_train_codec_decode_train_to_track (const uint8_t in_buffer, size_t buffer_size, rbc_train_inbound_msg_t out_msg)
	Decodes an inbound Train-to-Track message (Msg 129, 130, 132, 136, 146, 147, 150, 155, 156, 159) from wire bytes.

Detailed Description

ERTMS/ETCS Level 2 Message-Level Codec Implementation (GP).

See ab_gp_ertms_train_message_codec.h for this file's role relative to ab_gp_ertms_train_packet_codec.c - this file owns message structure (which packets a NID_MESSAGE carries, in what order, any has_X optionality) and calls into that one for every packet's own wire layout, so a packet shared by more than one message (Packet 15/MA: Msg 3 and Msg 9) is encoded once.

Definition in file ab_gp_ertms_train_message_codec.c.

Function Documentation

◆ write_track_to_train_header()

void write_track_to_train_header	(	uint8_t *	buf,
		size_t	cap,
		size_t *	offset,
		const rbc_track_to_train_header_t *	h )

static

Writes the common Track-to-Train radio header (Subset-026 8.4.1) shared by every case in rbc_train_codec_encode_track_to_train()'s own switch.

Definition at line 19 of file ab_gp_ertms_train_message_codec.c.

◆ rbc_train_codec_encode_track_to_train()

bool rbc_train_codec_encode_track_to_train	(	const rbc_train_outbound_msg_t *	msg,
		uint8_t *	out_buffer,
		size_t	buffer_size,
		size_t *	out_bytes_written )

Encodes an outbound Track-to-Train message (Msg 2, 3, 6, 8, 9, 15, 16, 18, 24, 33, 34, 41) into wire bytes.

Parameters

[in]	msg	Structured message to encode.
[out]	out_buffer	Target buffer to receive encoded bytes.
[in]	buffer_size	Capacity of out_buffer (must be >= RBC_TRAIN_MAX_WIRE_MSG_SIZE).
[out]	out_bytes_written	Returns actual number of bytes written.

Returns: true on success, false if buffer too small or parameters invalid.

Definition at line 30 of file ab_gp_ertms_train_message_codec.c.

◆ rbc_train_codec_decode_train_to_track()

bool rbc_train_codec_decode_train_to_track	(	const uint8_t *	in_buffer,
		size_t	buffer_size,
		rbc_train_inbound_msg_t *	out_msg )

Decodes an inbound Train-to-Track message (Msg 129, 130, 132, 136, 146, 147, 150, 155, 156, 159) from wire bytes.