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C2: Add LIN message support

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This commit is contained in:
David Rebbe
2026-04-15 15:50:33 -04:00
committed by Kyle Schwarz
parent 6dc005fcea
commit f5f6d0828b
11 changed files with 1199 additions and 12 deletions
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include/icsneo/communication/message/linmessage.h
+10 -8
View File
@@ -1,6 +1,8 @@
#ifndef __LINMESSAGE_H_
#define __LINMESSAGE_H_
#include "icsneo/icsneoc2messages.h"
#ifdef __cplusplus
#include "icsneo/communication/message/message.h"
@@ -36,14 +38,14 @@ struct LINStatusFlags {
class LINMessage : public Frame {
public:
enum class Type : uint8_t {
NOT_SET = 0,
LIN_COMMANDER_MSG,
LIN_HEADER_ONLY,
LIN_BREAK_ONLY,
LIN_SYNC_ONLY,
LIN_UPDATE_RESPONDER,
LIN_ERROR
enum class Type : icsneoc2_lin_msg_type_t {
NOT_SET = icsneoc2_lin_msg_type_not_set,
LIN_COMMANDER_MSG = icsneoc2_lin_msg_type_commander_msg,
LIN_HEADER_ONLY = icsneoc2_lin_msg_type_header_only,
LIN_BREAK_ONLY = icsneoc2_lin_msg_type_break_only,
LIN_SYNC_ONLY = icsneoc2_lin_msg_type_sync_only,
LIN_UPDATE_RESPONDER = icsneoc2_lin_msg_type_update_responder,
LIN_ERROR = icsneoc2_lin_msg_type_error
};
static void calcChecksum(LINMessage& message);
include/icsneo/icsneoc2messages.h
+133
View File
@@ -171,6 +171,139 @@ icsneoc2_error_t icsneoc2_message_is_frame(icsneoc2_message_t* message, bool* is
*/
icsneoc2_error_t icsneoc2_message_is_can(icsneoc2_message_t* message, bool* is_can);
/**
* Check if a message is a LIN message
*
* @param[in] message The message to check.
* @param[out] is_lin Pointer to a bool to copy the LIN status of the message into.
*
* @return icsneoc2_error_t icsneoc2_error_success if successful, icsneoc2_error_invalid_parameters otherwise.
*/
icsneoc2_error_t icsneoc2_message_is_lin(icsneoc2_message_t* message, bool* is_lin);
// ---- LIN Message Types ----
typedef enum _icsneoc2_lin_msg_type_t {
icsneoc2_lin_msg_type_not_set = 0,
icsneoc2_lin_msg_type_commander_msg = 1,
icsneoc2_lin_msg_type_header_only = 2,
icsneoc2_lin_msg_type_break_only = 3,
icsneoc2_lin_msg_type_sync_only = 4,
icsneoc2_lin_msg_type_update_responder = 5,
icsneoc2_lin_msg_type_error = 6,
} _icsneoc2_lin_msg_type_t;
typedef uint8_t icsneoc2_lin_msg_type_t;
// LIN error flags bitmask
#define ICSNEOC2_LIN_ERR_RX_BREAK_ONLY 0x0001
#define ICSNEOC2_LIN_ERR_RX_BREAK_SYNC_ONLY 0x0002
#define ICSNEOC2_LIN_ERR_TX_RX_MISMATCH 0x0004
#define ICSNEOC2_LIN_ERR_RX_BREAK_NOT_ZERO 0x0008
#define ICSNEOC2_LIN_ERR_RX_BREAK_TOO_SHORT 0x0010
#define ICSNEOC2_LIN_ERR_RX_SYNC_NOT_55 0x0020
#define ICSNEOC2_LIN_ERR_RX_DATA_LEN_OVER_8 0x0040
#define ICSNEOC2_LIN_ERR_FRAME_SYNC 0x0080
#define ICSNEOC2_LIN_ERR_FRAME_MESSAGE_ID 0x0100
#define ICSNEOC2_LIN_ERR_FRAME_RESPONDER_DATA 0x0200
#define ICSNEOC2_LIN_ERR_CHECKSUM_MATCH 0x0400
typedef uint32_t icsneoc2_lin_err_flags_t;
// LIN status flags bitmask
#define ICSNEOC2_LIN_STATUS_TX_CHECKSUM_ENHANCED 0x01
#define ICSNEOC2_LIN_STATUS_TX_COMMANDER 0x02
#define ICSNEOC2_LIN_STATUS_TX_RESPONDER 0x04
#define ICSNEOC2_LIN_STATUS_TX_ABORTED 0x08
#define ICSNEOC2_LIN_STATUS_UPDATE_RESPONDER_ONCE 0x10
#define ICSNEOC2_LIN_STATUS_HAS_UPDATED_RESPONDER_ONCE 0x20
#define ICSNEOC2_LIN_STATUS_BUS_RECOVERED 0x40
#define ICSNEOC2_LIN_STATUS_BREAK_ONLY 0x80
typedef uint32_t icsneoc2_lin_status_flags_t;
/**
* Create a LIN message.
*
* @param[out] message Pointer to receive the new LIN message handle.
* @param[in] id The LIN frame ID (0-63). Bits above 0x3F are masked off.
*
* @return icsneoc2_error_t icsneoc2_error_success if successful.
*
* @see icsneoc2_message_free
*/
icsneoc2_error_t icsneoc2_message_lin_create(icsneoc2_message_t** message, uint8_t id);
/**
* Get the LIN-specific properties of a message.
*
* Any output pointer may be NULL to skip that field.
*
* @param[in] message The message to query (must be a LIN message).
* @param[out] id Pointer to receive the LIN frame ID.
* @param[out] protected_id Pointer to receive the protected ID (ID with parity bits).
* @param[out] checksum Pointer to receive the checksum byte.
* @param[out] msg_type Pointer to receive the LIN message type.
* @param[out] is_enhanced_checksum Pointer to receive whether enhanced checksum is used.
*
* @return icsneoc2_error_t icsneoc2_error_success if successful, icsneoc2_error_invalid_type if not a LIN message.
*/
icsneoc2_error_t icsneoc2_message_lin_props_get(const icsneoc2_message_t* message,
uint8_t* id, uint8_t* protected_id, uint8_t* checksum,
icsneoc2_lin_msg_type_t* msg_type, bool* is_enhanced_checksum);
/**
* Set the LIN-specific properties of a message.
*
* Any input pointer may be NULL to skip that field. Setting the ID also recalculates the protected ID.
*
* @param[in] message The message to modify (must be a LIN message).
* @param[in] id Pointer to the LIN frame ID to set (0-63). NULL to skip.
* @param[in] checksum Pointer to the checksum byte to set. NULL to skip.
* @param[in] msg_type Pointer to the LIN message type to set. NULL to skip.
* @param[in] is_enhanced_checksum Pointer to set enhanced checksum mode. NULL to skip.
*
* @return icsneoc2_error_t icsneoc2_error_success if successful, icsneoc2_error_invalid_type if not a LIN message.
*/
icsneoc2_error_t icsneoc2_message_lin_props_set(icsneoc2_message_t* message,
const uint8_t* id, const uint8_t* checksum,
const icsneoc2_lin_msg_type_t* msg_type, const bool* is_enhanced_checksum);
/**
* Get the LIN error flags of a message.
*
* @param[in] message The message to query (must be a LIN message).
* @param[out] err_flags Pointer to receive the error flags bitmask.
*
* @return icsneoc2_error_t icsneoc2_error_success if successful, icsneoc2_error_invalid_type if not a LIN message.
*
* @see ICSNEOC2_LIN_ERR_*
*/
icsneoc2_error_t icsneoc2_message_lin_err_flags_get(const icsneoc2_message_t* message, icsneoc2_lin_err_flags_t* err_flags);
/**
* Get the LIN status flags of a message.
*
* @param[in] message The message to query (must be a LIN message).
* @param[out] status_flags Pointer to receive the status flags bitmask.
*
* @return icsneoc2_error_t icsneoc2_error_success if successful, icsneoc2_error_invalid_type if not a LIN message.
*
* @see ICSNEOC2_LIN_STATUS_*
*/
icsneoc2_error_t icsneoc2_message_lin_status_flags_get(const icsneoc2_message_t* message, icsneoc2_lin_status_flags_t* status_flags);
/**
* Calculate and set the checksum on a LIN message.
*
* Uses enhanced or classic checksum based on the isEnhancedChecksum property.
*
* @param[in] message The LIN message to calculate the checksum for.
*
* @return icsneoc2_error_t icsneoc2_error_success if successful, icsneoc2_error_invalid_type if not a LIN message.
*/
icsneoc2_error_t icsneoc2_message_lin_calc_checksum(icsneoc2_message_t* message);
/**
* Get the network type of a message
*