ISO 15765-2 transport over classic CAN and CAN FD. More...

Data Structures
struct	CCX_ISOTP_Padding_t
	ISO-TP padding configuration. More...
struct	CCX_ISOTP_TX_Config_t
	ISO-TP TX configuration structure. More...
struct	CCX_ISOTP_RX_Config_t
	ISO-TP RX configuration structure. More...
struct	CCX_ISOTP_TX_t
	ISO-TP TX instance structure. More...
struct	CCX_ISOTP_RX_t
	ISO-TP RX instance structure. More...

Macros
#define	CCX_ISOTP_MAX_CLASSIC_DATA_SIZE 4095U
	Maximum ISO-TP payload for classic CAN instances.
#define	CCX_ISOTP_MAX_FD_DATA_SIZE UINT32_MAX
	Maximum ISO-TP payload for CAN FD instances.
#define	CCX_ISOTP_MAX_DATA_SIZE CCX_ISOTP_MAX_FD_DATA_SIZE
	Build-wide compatibility alias for the active default limit.
#define	CCX_ISOTP_NO_PADDING ((CCX_ISOTP_Padding_t){.Enable = CCX_ISOTP_PADDING_DISABLED, .PaddingByte = 0U})
#define	CCX_ISOTP_PADDING(byte)
#define	CCX_ISOTP_STMIN_100US 0xF1U
#define	CCX_ISOTP_STMIN_200US 0xF2U
#define	CCX_ISOTP_STMIN_300US 0xF3U
#define	CCX_ISOTP_STMIN_400US 0xF4U
#define	CCX_ISOTP_STMIN_500US 0xF5U
#define	CCX_ISOTP_STMIN_600US 0xF6U
#define	CCX_ISOTP_STMIN_700US 0xF7U
#define	CCX_ISOTP_STMIN_800US 0xF8U
#define	CCX_ISOTP_STMIN_900US 0xF9U
#define	CCX_ISOTP_RX_TABLE_ENTRY(isotp_rx_ptr, can_id, ide_flag)
	Macro to generate CAN CoreX RX table entry for ISO-TP RX instance.
#define	CCX_ISOTP_TX_FC_TABLE_ENTRY(isotp_tx_ptr, fc_can_id, ide_flag)
	Macro to generate CAN CoreX RX table entry for ISO-TP TX Flow Control.
#define	CCX_ISOTP_RX_TABLE_ENTRY_EX(isotp_rx_ptr, can_id, ide_flag, frame_format)
#define	CCX_ISOTP_TX_FC_TABLE_ENTRY_EX(isotp_tx_ptr, fc_can_id, ide_flag, frame_format)

Typedefs
typedef uint32_t	CCX_ISOTP_Length_t
typedef struct CCX_ISOTP_TX_t	CCX_ISOTP_TX_t
typedef struct CCX_ISOTP_RX_t	CCX_ISOTP_RX_t

Enumerations
enum	CCX_ISOTP_PCI_t { CCX_ISOTP_PCI_SF = 0x00 , CCX_ISOTP_PCI_FF = 0x10 , CCX_ISOTP_PCI_CF = 0x20 , CCX_ISOTP_PCI_FC = 0x30 }
	ISO-TP length type. More...
enum	CCX_ISOTP_LengthFormat_t { CCX_ISOTP_LENGTH_FORMAT_STANDARD = 0 , CCX_ISOTP_LENGTH_FORMAT_EXTENDED }
enum	CCX_ISOTP_TxDL_t { CCX_ISOTP_TX_DL_8 = 8 , CCX_ISOTP_TX_DL_12 = 12 , CCX_ISOTP_TX_DL_16 = 16 , CCX_ISOTP_TX_DL_20 = 20 , CCX_ISOTP_TX_DL_24 = 24 , CCX_ISOTP_TX_DL_32 = 32 , CCX_ISOTP_TX_DL_48 = 48 , CCX_ISOTP_TX_DL_64 = 64 }
enum	CCX_ISOTP_FC_FS_t { CCX_ISOTP_FC_CTS = 0x00 , CCX_ISOTP_FC_WAIT = 0x01 , CCX_ISOTP_FC_OVFLW = 0x02 }
	Legal CAN FD link-layer payload sizes for ISO-TP sessions. More...
enum	CCX_ISOTP_Status_t { CCX_ISOTP_OK = 0 , CCX_ISOTP_ERROR_NULL_PTR , CCX_ISOTP_ERROR_INVALID_ARG , CCX_ISOTP_ERROR_TIMEOUT_FC , CCX_ISOTP_ERROR_TIMEOUT = CCX_ISOTP_ERROR_TIMEOUT_FC , CCX_ISOTP_ERROR_OVERFLOW , CCX_ISOTP_ERROR_BUSY , CCX_ISOTP_ERROR_SEQUENCE , CCX_ISOTP_ERROR_BUFFER_TOO_SMALL , CCX_ISOTP_ERROR_ABORTED , CCX_ISOTP_ERROR_WAIT_EXCEEDED , CCX_ISOTP_ERROR_TIMEOUT_CF_TX , CCX_ISOTP_ERROR_TIMEOUT_CF_RX , CCX_ISOTP_ERROR_MISSING_TIMEBASE , CCX_ISOTP_ERROR_FD_NOT_SUPPORTED }
	ISO-TP error codes.
enum	CCX_ISOTP_TX_State_t { CCX_ISOTP_TX_STATE_IDLE = 0 , CCX_ISOTP_TX_STATE_WAIT_FC , CCX_ISOTP_TX_STATE_SENDING_CF }
	ISO-TP TX state machine states.
enum	CCX_ISOTP_RX_State_t { CCX_ISOTP_RX_STATE_IDLE = 0 , CCX_ISOTP_RX_STATE_RECEIVING_CF }
	ISO-TP RX state machine states.
enum	CCX_ISOTP_PaddingEnable_t { CCX_ISOTP_PADDING_DISABLED = 0 , CCX_ISOTP_PADDING_ENABLED = 1 }

Functions
void	CCX_ISOTP_TX_Config_Init (CCX_ISOTP_TX_Config_t Config, uint32_t TxID, uint8_t IDE_TxID, CCX_TIME_t N_Bs, CCX_TIME_t N_Cs, CCX_ISOTP_Padding_t Padding, void UserData, void(OnTransmitComplete)(CCX_ISOTP_TX_t Instance, void UserData), void(OnError)(CCX_ISOTP_TX_t Instance, CCX_ISOTP_Status_t Error, void UserData))
	Initialize ISO-TP TX configuration with defaults.
void	CCX_ISOTP_TX_Config_InitFD (CCX_ISOTP_TX_Config_t Config, uint32_t TxID, uint8_t IDE_TxID, CCX_frame_format_t FrameFormat, uint8_t TxDL, CCX_TIME_t N_Bs, CCX_TIME_t N_Cs, CCX_ISOTP_Padding_t Padding, void UserData, void(OnTransmitComplete)(CCX_ISOTP_TX_t Instance, void UserData), void(OnError)(CCX_ISOTP_TX_t Instance, CCX_ISOTP_Status_t Error, void UserData))
	Initialize ISO-TP TX FD configuration with defaults.
CCX_ISOTP_Status_t	CCX_ISOTP_TX_Init (CCX_ISOTP_TX_t Instance, CCX_instance_t CanInstance, const CCX_ISOTP_TX_Config_t *Config)
	Initialize ISO-TP TX instance.
CCX_ISOTP_Status_t	CCX_ISOTP_TX_Abort (CCX_ISOTP_TX_t *Instance)
	Abort an active ISO-TP TX transfer.
CCX_ISOTP_Status_t	CCX_ISOTP_Transmit (CCX_ISOTP_TX_t Instance, const uint8_t Data, CCX_ISOTP_Length_t Length)
	Transmit data using ISO-TP.
void	CCX_ISOTP_TX_Poll (CCX_ISOTP_TX_t *Instance)
	Poll ISO-TP TX instance (call periodically from main loop).
void	CCX_ISOTP_TX_FC_Parser (const CCX_instance_t CanInstance, CCX_message_t Msg, uint16_t Slot, void *UserData)
	Parser function for Flow Control frames (for TX side).
void	CCX_ISOTP_RX_Config_Init (CCX_ISOTP_RX_Config_t Config, uint32_t TxID, uint8_t IDE_TxID, uint8_t BS, uint8_t STmin, CCX_TIME_t N_Cr, uint8_t RxBuffer, CCX_ISOTP_Length_t RxBufferSize, CCX_ISOTP_Padding_t Padding, CCX_ISOTP_Length_t ProgressCallbackInterval, void UserData, void(OnReceiveStart)(CCX_ISOTP_RX_t Instance, CCX_ISOTP_Length_t TotalLength, void UserData), void(OnReceiveComplete)(CCX_ISOTP_RX_t Instance, const uint8_t Data, CCX_ISOTP_Length_t Length, void UserData), void(OnReceiveProgress)(CCX_ISOTP_RX_t Instance, CCX_ISOTP_Length_t BytesReceived, CCX_ISOTP_Length_t TotalLength, void UserData), void(OnError)(CCX_ISOTP_RX_t Instance, CCX_ISOTP_Status_t Error, void UserData))
	Initialize ISO-TP RX configuration with defaults.
void	CCX_ISOTP_RX_Config_InitFD (CCX_ISOTP_RX_Config_t Config, uint32_t TxID, uint8_t IDE_TxID, CCX_frame_format_t FrameFormat, uint8_t FC_TxDL, uint8_t BS, uint8_t STmin, CCX_TIME_t N_Cr, uint8_t RxBuffer, CCX_ISOTP_Length_t RxBufferSize, CCX_ISOTP_Padding_t Padding, CCX_ISOTP_Length_t ProgressCallbackInterval, void UserData, void(OnReceiveStart)(CCX_ISOTP_RX_t Instance, CCX_ISOTP_Length_t TotalLength, void UserData), void(OnReceiveComplete)(CCX_ISOTP_RX_t Instance, const uint8_t Data, CCX_ISOTP_Length_t Length, void UserData), void(OnReceiveProgress)(CCX_ISOTP_RX_t Instance, CCX_ISOTP_Length_t BytesReceived, CCX_ISOTP_Length_t TotalLength, void UserData), void(OnError)(CCX_ISOTP_RX_t Instance, CCX_ISOTP_Status_t Error, void UserData))
	Initialize ISO-TP RX FD configuration with defaults.
CCX_ISOTP_Status_t	CCX_ISOTP_RX_Init (CCX_ISOTP_RX_t Instance, CCX_instance_t CanInstance, const CCX_ISOTP_RX_Config_t *Config)
	Initialize ISO-TP RX instance.
CCX_ISOTP_Status_t	CCX_ISOTP_RX_Abort (CCX_ISOTP_RX_t *Instance)
	Abort an active ISO-TP RX transfer.
void	CCX_ISOTP_RX_Parser (const CCX_instance_t CanInstance, CCX_message_t Msg, uint16_t Slot, void *UserData)
	Parser function for CAN CoreX RX table.
void	CCX_ISOTP_RX_Poll (CCX_ISOTP_RX_t *Instance)
	Poll ISO-TP RX instance (call periodically from main loop).

Detailed Description

ISO 15765-2 transport over classic CAN and CAN FD.

Macro Definition Documentation

◆ CCX_ISOTP_MAX_CLASSIC_DATA_SIZE

#define CCX_ISOTP_MAX_CLASSIC_DATA_SIZE 4095U

Maximum ISO-TP payload for classic CAN instances.

Applies to sessions configured with FrameFormat = CCX_FRAME_FORMAT_CLASSIC, even in builds where CCX_ENABLE_CANFD=1.

◆ CCX_ISOTP_MAX_FD_DATA_SIZE

#define CCX_ISOTP_MAX_FD_DATA_SIZE UINT32_MAX

Maximum ISO-TP payload for CAN FD instances.

This limit applies only to ISO-TP sessions configured for FrameFormat = CCX_FRAME_FORMAT_FD or CCX_FRAME_FORMAT_FD_BRS. Override it if the application wants to cap FD transfers below the protocol's 32-bit length field.

◆ CCX_ISOTP_PADDING

#define CCX_ISOTP_PADDING ( byte )

Value:

((CCX_ISOTP_Padding_t){.Enable = CCX_ISOTP_PADDING_ENABLED, .PaddingByte = (uint8_t)(byte)})

CCX_ISOTP_Padding_t

ISO-TP padding configuration.

Definition can_corex_isotp.h:189

◆ CCX_ISOTP_RX_TABLE_ENTRY

#define CCX_ISOTP_RX_TABLE_ENTRY	(	isotp_rx_ptr,
		can_id,
		ide_flag )

Value:

{                                                                                                                  \
    .ID = (can_id), .DLC = CCX_DLC_ANY, .IDE_flag = (ide_flag), .FrameFormat = CCX_FRAME_FORMAT_CLASSIC,           \
    .UserData = (isotp_rx_ptr), .TimeOut = 0, .Parser = CCX_ISOTP_RX_Parser, .TimeoutCallback = NULL,              \
    .LastTick = 0                                                                                                  \
}

Macro to generate CAN CoreX RX table entry for ISO-TP RX instance.

Parameters

isotp_rx_ptr	Pointer to CCX_ISOTP_RX_t instance
can_id	CAN ID for receiving ISO-TP data frames
ide_flag	0 = Standard ID (11-bit), 1 = Extended ID (29-bit)

Note: Uses CCX_DLC_ANY to accept any DLC (wildcard matching in CAN CoreX) and defaults to classic frame format in FD-capable builds.

Usage example: CCX_ISOTP_RX_t isotp_rx; CCX_RX_table_t rx_table[] = { CCX_ISOTP_RX_TABLE_ENTRY(&isotp_rx, 0x123, 0), // Standard ID CCX_ISOTP_RX_TABLE_ENTRY(&isotp_rx, 0x18DA00F1, 1) // Extended ID };

◆ CCX_ISOTP_RX_TABLE_ENTRY_EX

#define CCX_ISOTP_RX_TABLE_ENTRY_EX	(	isotp_rx_ptr,
		can_id,
		ide_flag,
		frame_format )

Value:

{                                                                                                                  \
    .ID = (can_id), .DLC = CCX_DLC_ANY, .IDE_flag = (ide_flag), .FrameFormat = (frame_format),                     \
    .UserData = (isotp_rx_ptr), .TimeOut = 0, .Parser = CCX_ISOTP_RX_Parser, .TimeoutCallback = NULL,              \
    .LastTick = 0                                                                                                  \
}

◆ CCX_ISOTP_TX_FC_TABLE_ENTRY

#define CCX_ISOTP_TX_FC_TABLE_ENTRY	(	isotp_tx_ptr,
		fc_can_id,
		ide_flag )

Value:

{                                                                                                                  \
    .ID = (fc_can_id), .DLC = CCX_DLC_ANY, .IDE_flag = (ide_flag), .FrameFormat = CCX_FRAME_FORMAT_CLASSIC,        \
    .UserData = (isotp_tx_ptr), .TimeOut = 0, .Parser = CCX_ISOTP_TX_FC_Parser, .TimeoutCallback = NULL,           \
    .LastTick = 0                                                                                                  \
}

Macro to generate CAN CoreX RX table entry for ISO-TP TX Flow Control.

Parameters

isotp_tx_ptr	Pointer to CCX_ISOTP_TX_t instance
fc_can_id	CAN ID for receiving Flow Control frames
ide_flag	0 = Standard ID (11-bit), 1 = Extended ID (29-bit)

Note: Uses CCX_DLC_ANY - FC can be sent with or without padding. In FD-capable builds this macro defaults to classic frame format.

Usage example: CCX_ISOTP_TX_t isotp_tx; CCX_ISOTP_RX_t isotp_rx; CCX_RX_table_t rx_table[] = {

CCX_ISOTP_RX_TABLE_ENTRY(&isotp_rx, 0x123, 0), // Standard ID CCX_ISOTP_TX_FC_TABLE_ENTRY(&isotp_tx, 0x321, 0) // Standard ID for FC };

◆ CCX_ISOTP_TX_FC_TABLE_ENTRY_EX

#define CCX_ISOTP_TX_FC_TABLE_ENTRY_EX	(	isotp_tx_ptr,
		fc_can_id,
		ide_flag,
		frame_format )

Value:

{                                                                                                                  \
    .ID = (fc_can_id), .DLC = CCX_DLC_ANY, .IDE_flag = (ide_flag), .FrameFormat = (frame_format),                  \
    .UserData = (isotp_tx_ptr), .TimeOut = 0, .Parser = CCX_ISOTP_TX_FC_Parser, .TimeoutCallback = NULL,           \
    .LastTick = 0                                                                                                  \
}

Enumeration Type Documentation

◆ CCX_ISOTP_FC_FS_t

enum CCX_ISOTP_FC_FS_t

Legal CAN FD link-layer payload sizes for ISO-TP sessions.

TxDL is used only for FD ISO-TP sessions. Classic ISO-TP sessions always use 8 bytes as the link-layer payload.

ISO-TP Flow Control Flow Status values

◆ CCX_ISOTP_PCI_t

enum CCX_ISOTP_PCI_t

ISO-TP length type.

In classic-only builds this stays uint16_t. In FD builds it becomes uint32_t, allowing payload lengths above 4095 on FD-configured ISO-TP instances.

ISO-TP frame types (PCI - Protocol Control Information)

Function Documentation

◆ CCX_ISOTP_RX_Abort()

CCX_ISOTP_Status_t CCX_ISOTP_RX_Abort ( CCX_ISOTP_RX_t * Instance )

Abort an active ISO-TP RX transfer.

Resets the RX instance back to IDLE. If a transfer was active, OnError(..., CCX_ISOTP_ERROR_ABORTED, ...) is emitted.

Parameters

Instance Pointer to RX instance

Returns: CCX_ISOTP_OK on success, error code otherwise

◆ CCX_ISOTP_RX_Config_Init()

void CCX_ISOTP_RX_Config_Init	(	CCX_ISOTP_RX_Config_t *	Config,
		uint32_t	TxID,
		uint8_t	IDE_TxID,
		uint8_t	BS,
		uint8_t	STmin,
		CCX_TIME_t	N_Cr,
		uint8_t *	RxBuffer,
		CCX_ISOTP_Length_t	RxBufferSize,
		CCX_ISOTP_Padding_t	Padding,
		CCX_ISOTP_Length_t	ProgressCallbackInterval,
		void *	UserData,
		void(*	OnReceiveStart )(CCX_ISOTP_RX_t Instance, CCX_ISOTP_Length_t TotalLength, void UserData),
		void(*	OnReceiveComplete )(CCX_ISOTP_RX_t Instance, const uint8_t Data, CCX_ISOTP_Length_t Length, void *UserData),
		void(*	OnReceiveProgress )(CCX_ISOTP_RX_t Instance, CCX_ISOTP_Length_t BytesReceived, CCX_ISOTP_Length_t TotalLength, void UserData),
		void(*	OnError )(CCX_ISOTP_RX_t Instance, CCX_ISOTP_Status_t Error, void UserData) )

Initialize ISO-TP RX configuration with defaults.

Fills Config with a classic/no-padding configuration and library defaults for fields that can be inferred or safely defaulted. Callers may override any fields after initialization and before CCX_ISOTP_RX_Init().

Parameters

Config	Pointer to RX configuration to initialize
TxID	CAN ID for transmitting Flow Control
IDE_TxID	CAN identifier type for TxID
BS	Block Size to request in FC
STmin	Separation Time minimum to request in FC
N_Cr	Timeout between received CF in base ticks
RxBuffer	Buffer for received data
RxBufferSize	Size of RX buffer
Padding	Padding configuration
ProgressCallbackInterval	Call progress callback every N newly received bytes (0 = disabled)
UserData	User context pointer passed to callbacks
OnReceiveStart	Start callback
OnReceiveComplete	Completion callback
OnReceiveProgress	Progress callback
OnError	Error callback

◆ CCX_ISOTP_RX_Config_InitFD()

void CCX_ISOTP_RX_Config_InitFD	(	CCX_ISOTP_RX_Config_t *	Config,
		uint32_t	TxID,
		uint8_t	IDE_TxID,
		CCX_frame_format_t	FrameFormat,
		uint8_t	FC_TxDL,
		uint8_t	BS,
		uint8_t	STmin,
		CCX_TIME_t	N_Cr,
		uint8_t *	RxBuffer,
		CCX_ISOTP_Length_t	RxBufferSize,
		CCX_ISOTP_Padding_t	Padding,
		CCX_ISOTP_Length_t	ProgressCallbackInterval,
		void *	UserData,
		void(*	OnReceiveStart )(CCX_ISOTP_RX_t Instance, CCX_ISOTP_Length_t TotalLength, void UserData),
		void(*	OnReceiveComplete )(CCX_ISOTP_RX_t Instance, const uint8_t Data, CCX_ISOTP_Length_t Length, void *UserData),
		void(*	OnReceiveProgress )(CCX_ISOTP_RX_t Instance, CCX_ISOTP_Length_t BytesReceived, CCX_ISOTP_Length_t TotalLength, void UserData),
		void(*	OnError )(CCX_ISOTP_RX_t Instance, CCX_ISOTP_Status_t Error, void UserData) )

Initialize ISO-TP RX FD configuration with defaults.

Same as CCX_ISOTP_RX_Config_Init(), but also applies the FD-specific receive/session transport fields in one step.

Parameters

Config	Pointer to RX configuration to initialize
TxID	CAN ID for transmitting Flow Control
IDE_TxID	CAN identifier type for TxID
FrameFormat	Expected transport format of received ISO-TP frames
FC_TxDL	FD link-layer payload size used for transmitted FC frames
BS	Block Size to request in FC
STmin	Separation Time minimum to request in FC
N_Cr	Timeout between received CF in milliseconds
RxBuffer	Buffer for received data
RxBufferSize	Size of RX buffer
Padding	Padding configuration
ProgressCallbackInterval	Call progress callback every N newly received bytes (0 = disabled)
UserData	User context pointer passed to callbacks
OnReceiveStart	Start callback
OnReceiveComplete	Completion callback
OnReceiveProgress	Progress callback
OnError	Error callback

◆ CCX_ISOTP_RX_Init()

CCX_ISOTP_Status_t CCX_ISOTP_RX_Init	(	CCX_ISOTP_RX_t *	Instance,
		CCX_instance_t *	CanInstance,
		const CCX_ISOTP_RX_Config_t *	Config )

Initialize ISO-TP RX instance.

Parameters

Instance	Pointer to RX instance structure
CanInstance	Pointer to CAN CoreX instance
Config	Pointer to RX configuration

Returns: CCX_ISOTP_OK on success, error code otherwise

Note: In FD builds, Config->FC_TxDL is used only for transmitted Flow Control frames when the RX session itself is configured for FD.

◆ CCX_ISOTP_RX_Parser()

void CCX_ISOTP_RX_Parser	(	const CCX_instance_t *	CanInstance,
		CCX_message_t *	Msg,
		uint16_t	Slot,
		void *	UserData )

Parser function for CAN CoreX RX table.

This function should be called from CAN CoreX RX table parser. Use CCX_ISOTP_RX_TABLE_ENTRY macro to generate RX table entry.

Parameters

CanInstance	CAN CoreX instance (unused, for compatibility)
Msg	Received CAN message
Slot	RX table slot (unused, for compatibility)
UserData	ISO-TP RX instance pointer from the RX table entry

◆ CCX_ISOTP_RX_Poll()

void CCX_ISOTP_RX_Poll ( CCX_ISOTP_RX_t * Instance )

Poll ISO-TP RX instance (call periodically from main loop).

Parameters

Instance Pointer to RX instance

◆ CCX_ISOTP_Transmit()

CCX_ISOTP_Status_t CCX_ISOTP_Transmit	(	CCX_ISOTP_TX_t *	Instance,
		const uint8_t *	Data,
		CCX_ISOTP_Length_t	Length )

Transmit data using ISO-TP.

Parameters

Instance	Pointer to TX instance
Data	Pointer to data to transmit
Length	Length of data in bytes

Returns: CCX_ISOTP_OK on success, error code otherwise

Note: Data pointer must remain valid until OnTransmitComplete is called; Header selection is based on ISO-TP payload length before padding. For example, in FD mode payloads 1..7 still use the standard single-frame header even if CAN padding expands the frame to a larger TxDL.

◆ CCX_ISOTP_TX_Abort()

CCX_ISOTP_Status_t CCX_ISOTP_TX_Abort ( CCX_ISOTP_TX_t * Instance )

Abort an active ISO-TP TX transfer.

Resets the TX instance back to IDLE. If a transfer was active, OnError(..., CCX_ISOTP_ERROR_ABORTED, ...) is emitted.

Parameters

Instance Pointer to TX instance

Returns: CCX_ISOTP_OK on success, error code otherwise

◆ CCX_ISOTP_TX_Config_Init()

void CCX_ISOTP_TX_Config_Init	(	CCX_ISOTP_TX_Config_t *	Config,
		uint32_t	TxID,
		uint8_t	IDE_TxID,
		CCX_TIME_t	N_Bs,
		CCX_TIME_t	N_Cs,
		CCX_ISOTP_Padding_t	Padding,
		void *	UserData,
		void(*	OnTransmitComplete )(CCX_ISOTP_TX_t Instance, void UserData),
		void(*	OnError )(CCX_ISOTP_TX_t Instance, CCX_ISOTP_Status_t Error, void UserData) )

Initialize ISO-TP TX configuration with defaults.

Fills Config with a classic/no-padding configuration and library defaults for fields that can be inferred or safely defaulted. Callers may override any fields after initialization and before CCX_ISOTP_TX_Init().

Parameters

Config	Pointer to TX configuration to initialize
TxID	CAN ID for transmitting data
IDE_TxID	CAN identifier type for TxID
N_Bs	Timeout for reception of FC after FF/CF in base ticks
N_Cs	Timeout between CF transmissions in base ticks
Padding	Padding configuration
UserData	User context pointer passed to callbacks
OnTransmitComplete	Completion callback
OnError	Error callback

◆ CCX_ISOTP_TX_Config_InitFD()

void CCX_ISOTP_TX_Config_InitFD	(	CCX_ISOTP_TX_Config_t *	Config,
		uint32_t	TxID,
		uint8_t	IDE_TxID,
		CCX_frame_format_t	FrameFormat,
		uint8_t	TxDL,
		CCX_TIME_t	N_Bs,
		CCX_TIME_t	N_Cs,
		CCX_ISOTP_Padding_t	Padding,
		void *	UserData,
		void(*	OnTransmitComplete )(CCX_ISOTP_TX_t Instance, void UserData),
		void(*	OnError )(CCX_ISOTP_TX_t Instance, CCX_ISOTP_Status_t Error, void UserData) )

Initialize ISO-TP TX FD configuration with defaults.

Same as CCX_ISOTP_TX_Config_Init(), but also applies the FD-specific transport fields in one step.

Parameters

Config	Pointer to TX configuration to initialize
TxID	CAN ID for transmitting data
IDE_TxID	CAN identifier type for TxID
FrameFormat	Session transport format: CCX_FRAME_FORMAT_FD or CCX_FRAME_FORMAT_FD_BRS
TxDL	FD link-layer payload size
N_Bs	Timeout for reception of FC after FF/CF in milliseconds
N_Cs	Timeout between CF transmissions in milliseconds
Padding	Padding configuration
UserData	User context pointer passed to callbacks
OnTransmitComplete	Completion callback
OnError	Error callback

◆ CCX_ISOTP_TX_FC_Parser()

void CCX_ISOTP_TX_FC_Parser	(	const CCX_instance_t *	CanInstance,
		CCX_message_t *	Msg,
		uint16_t	Slot,
		void *	UserData )

Parser function for Flow Control frames (for TX side).

This function should be called from CAN CoreX RX table parser. Use CCX_ISOTP_TX_FC_TABLE_ENTRY macro to generate RX table entry.

Parameters

CanInstance	CAN CoreX instance (unused, for compatibility)
Msg	Received CAN message (Flow Control)
Slot	RX table slot (unused, for compatibility)
UserData	ISO-TP TX instance pointer from the RX table entry

◆ CCX_ISOTP_TX_Init()

CCX_ISOTP_Status_t CCX_ISOTP_TX_Init	(	CCX_ISOTP_TX_t *	Instance,
		CCX_instance_t *	CanInstance,
		const CCX_ISOTP_TX_Config_t *	Config )

Initialize ISO-TP TX instance.

Parameters

Instance	Pointer to TX instance structure
CanInstance	Pointer to CAN CoreX instance
Config	Pointer to TX configuration

Returns: CCX_ISOTP_OK on success, error code otherwise

Note: In FD builds, Config->TxDL is validated only for FD sessions. Classic sessions keep the classic 4095-byte transport limit even when CCX_ENABLE_CANFD=1.

◆ CCX_ISOTP_TX_Poll()

void CCX_ISOTP_TX_Poll ( CCX_ISOTP_TX_t * Instance )

Poll ISO-TP TX instance (call periodically from main loop).

Parameters

Instance Pointer to TX instance

Data Structures

Macros

Typedefs

Enumerations

Functions

Detailed Description

Macro Definition Documentation

◆ CCX_ISOTP_MAX_CLASSIC_DATA_SIZE

◆ CCX_ISOTP_MAX_FD_DATA_SIZE

◆ CCX_ISOTP_PADDING

◆ CCX_ISOTP_RX_TABLE_ENTRY

◆ CCX_ISOTP_RX_TABLE_ENTRY_EX

◆ CCX_ISOTP_TX_FC_TABLE_ENTRY

◆ CCX_ISOTP_TX_FC_TABLE_ENTRY_EX

Enumeration Type Documentation

◆ CCX_ISOTP_FC_FS_t

◆ CCX_ISOTP_PCI_t

Function Documentation

◆ CCX_ISOTP_RX_Abort()

◆ CCX_ISOTP_RX_Config_Init()

◆ CCX_ISOTP_RX_Config_InitFD()

◆ CCX_ISOTP_RX_Init()

◆ CCX_ISOTP_RX_Parser()

◆ CCX_ISOTP_RX_Poll()

◆ CCX_ISOTP_Transmit()

◆ CCX_ISOTP_TX_Abort()

◆ CCX_ISOTP_TX_Config_Init()

◆ CCX_ISOTP_TX_Config_InitFD()

◆ CCX_ISOTP_TX_FC_Parser()

◆ CCX_ISOTP_TX_Init()

◆ CCX_ISOTP_TX_Poll()