Add, delete and modify messages. More...

Functions
KvaDbStatus	kvaDbGetFirstMsg (KvaDbHnd dh, KvaDbMessageHnd *mh)

KvaDbStatus	kvaDbGetNextMsg (KvaDbHnd dh, KvaDbMessageHnd *mh)

KvaDbStatus	kvaDbGetMsgById (KvaDbHnd dh, unsigned int id, KvaDbMessageHnd *mh)

KvaDbStatus	kvaDbGetMsgByIdEx (KvaDbHnd dh, unsigned int id, unsigned int flags, KvaDbMessageHnd *mh)

KvaDbStatus	kvaDbGetMsgByPGN (KvaDbHnd dh, unsigned int id, KvaDbMessageHnd *mh)

KvaDbStatus	kvaDbGetMsgByPGNEx (KvaDbHnd dh, unsigned int id, KvaDbMessageHnd *mh)

KvaDbStatus	kvaDbGetMsgByName (KvaDbHnd dh, const char msg_name, KvaDbMessageHnd mh)

KvaDbStatus	kvaDbGetMsgName (KvaDbMessageHnd mh, char *buf, size_t buflen)

KvaDbStatus	kvaDbGetMsgQualifiedName (KvaDbMessageHnd mh, char *buf, size_t buflen)

KvaDbStatus	kvaDbGetMsgComment (KvaDbMessageHnd mh, char *buf, size_t buflen)

KvaDbStatus	kvaDbGetMsgId (KvaDbMessageHnd mh, unsigned int id, unsigned int flags)

KvaDbStatus	kvaDbGetMsgIdEx (KvaDbMessageHnd mh, unsigned int *id)

KvaDbStatus	kvaDbGetMsgFlags (KvaDbMessageHnd mh, unsigned int *flags)

KvaDbStatus	kvaDbGetCanMsgFlags (KvaDbMessageHnd mh, unsigned int *flags)

KvaDbStatus	kvaDbGetMsgDlc (KvaDbMessageHnd mh, int *dlc)

KvaDbStatus	kvaDbGetMsgSendNode (KvaDbMessageHnd mh, KvaDbNodeHnd *nh)

KvaDbStatus	kvaDbAddMsg (KvaDbHnd dh, KvaDbMessageHnd *mh)

KvaDbStatus	kvaDbDeleteMsg (KvaDbHnd dh, KvaDbMessageHnd mh)

KvaDbStatus	kvaDbSetMsgName (KvaDbMessageHnd mh, char *buf)

KvaDbStatus	kvaDbSetMsgComment (KvaDbMessageHnd mh, char *buf)

KvaDbStatus	kvaDbSetMsgId (KvaDbMessageHnd mh, unsigned int id, unsigned int flags)

KvaDbStatus	kvaDbSetMsgIdEx (KvaDbMessageHnd mh, unsigned int id)

KvaDbStatus	kvaDbSetMsgFlags (KvaDbMessageHnd mh, unsigned int flags)

KvaDbStatus	kvaDbSetMsgDlc (KvaDbMessageHnd mh, int dlc)

KvaDbStatus	kvaDbSetMsgSendNode (KvaDbMessageHnd mh, KvaDbNodeHnd nh)

KvaDbStatus	kvaDbGetMsgMux (KvaDbMessageHnd mh, KvaDbSignalHnd *sh)

KvaDbStatus	kvaDbMsgDlcToBytes (KvaDbProtocolType prot, unsigned int dlc, unsigned int *numBytes)

KvaDbStatus	kvaDbBytesToMsgDlc (KvaDbProtocolType prot, unsigned int numBytes, unsigned int *dlc)

Detailed Description

Add, delete and modify messages.

Function Documentation

◆ kvaDbAddMsg()

KvaDbStatus kvaDbAddMsg	(	KvaDbHnd	dh,
		KvaDbMessageHnd *	mh
	)

Add a new message to a database.

Parameters

[in]	dh	A database handle
[out]	mh	A handle to the new message

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

See also: kvaDbDeleteMsg()

Examples:: example/c/candb_sample.c, and example/c/j1939_db.c.

◆ kvaDbBytesToMsgDlc()

KvaDbStatus kvaDbBytesToMsgDlc	(	KvaDbProtocolType	prot,
		unsigned int	numBytes,
		unsigned int *	dlc
	)

Translates number of bytes to message dlc for a given protocol

Parameters

[in]	prot	A protocol type
[in]	numBytes	Number of bytes
[out]	dlc	Raw message dlc

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

See also: kvaDbGetProtocol()

◆ kvaDbDeleteMsg()

KvaDbStatus kvaDbDeleteMsg	(	KvaDbHnd	dh,
		KvaDbMessageHnd	mh
	)

Delete a message from a database.

Parameters

[in]	dh	A database handle
[in]	mh	A handle to the message that will be deleted

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

See also: kvaDbAddMsg()

Examples:: example/c/candb_sample.c.

◆ kvaDbGetCanMsgFlags()

KvaDbStatus kvaDbGetCanMsgFlags	(	KvaDbMessageHnd	mh,
		unsigned int *	flags
	)

Get relevant message attributes expressed as CAN message flags, see canMSG_xxx and canFDMSG_xxx

Note that canFDMSG_BRS will never be returned for non-CAN FD frames, even though the CANFD_BRS attribute was set in the .dbc file.

Parameters

[in]	mh	A message handle
[out]	flags	The message flags, canMSG_xxx

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

◆ kvaDbGetFirstMsg()

KvaDbStatus kvaDbGetFirstMsg	(	KvaDbHnd	dh,
		KvaDbMessageHnd *	mh
	)

Get the first message in a database.

Parameters

[in]	dh	A handle to a database
[out]	mh	A handle to the first message

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

See also: kvaDbGetNextMsg()

Examples:: example/c/candb_sample.c.

◆ kvaDbGetMsgById()

KvaDbStatus kvaDbGetMsgById	(	KvaDbHnd	dh,
		unsigned int	id,
		KvaDbMessageHnd *	mh
	)

Get a handle to a message with a specific identifier. If the message requested has an extended id, the id should have the KVADB_MESSAGE_EXT flag set.

Parameters

[in]	dh	A database handle
[in]	id	The selected message identifier
[out]	mh	A message handle

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

See also: kvaDbGetMsgByName(); kvaDbGetMsgByIdEx()

Examples:: example/c/candb_sample.c.

◆ kvaDbGetMsgByIdEx()

KvaDbStatus kvaDbGetMsgByIdEx	(	KvaDbHnd	dh,
		unsigned int	id,
		unsigned int	flags,
		KvaDbMessageHnd *	mh
	)

Get a handle to a message with a specific identifier. If the requested message has an extended id, KVADB_MESSAGE_EXT should be set on the flags parameter. Bits 31..29 of the id are ignored.

Parameters

[in]	dh	A database handle
[in]	id	The selected message identifier
[in]	flags	The flags, KVADB_MESSAGE_xxx
[out]	mh	A message handle

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

See also: kvaDbGetMsgByName()

◆ kvaDbGetMsgByName()

KvaDbStatus kvaDbGetMsgByName	(	KvaDbHnd	dh,
		const char *	msg_name,
		KvaDbMessageHnd *	mh
	)

Get a handle to a message with a specific name.

Parameters

[in]	dh	A databse handle
[in]	msg_name	The message name to search for
[out]	mh	A message handle

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

See also: kvaDbGetMsgById()

Examples:: example/c/candb_sample.c.

◆ kvaDbGetMsgByPGN()

KvaDbStatus kvaDbGetMsgByPGN	(	KvaDbHnd	dh,
		unsigned int	id,
		KvaDbMessageHnd *	mh
	)

Get a handle to a message with a specific PGN-identifier. If the message is marked as J1939, checks if the PGN-part is equal. The message identifier needs to contain the KVADB_MESSAGE_EXT flag.

Parameters

[in]	dh	A database handle
[in]	id	The selected message identifier
[out]	mh	A message handle

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

See also: kvaDbGetMsgByName(); kvaDbGetMsgByPGNEx()

◆ kvaDbGetMsgByPGNEx()

KvaDbStatus kvaDbGetMsgByPGNEx	(	KvaDbHnd	dh,
		unsigned int	id,
		KvaDbMessageHnd *	mh
	)

Get a handle to a J1939 message using the PGN-identifier within the CAN id. All bits in the id that are not part of the PGN are ignored.

Parameters

[in]	dh	A database handle
[in]	id	The selected message identifier
[out]	mh	A message handle

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

See also: kvaDbGetMsgByName()

◆ kvaDbGetMsgComment()

KvaDbStatus kvaDbGetMsgComment	(	KvaDbMessageHnd	mh,
		char *	buf,
		size_t	buflen
	)

Get the comment for a message as a null-terminated string. A truncated string will be returned if buf is too small and status will be kvaDbOK.

Parameters

[in]	mh	A message handle
[out]	buf	The buffer that will hold the message comment
[in]	buflen	The length of the buffer

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

See also: kvaDbSetMsgComment()

Examples:: example/c/candb_sample.c.

◆ kvaDbGetMsgDlc()

KvaDbStatus kvaDbGetMsgDlc	(	KvaDbMessageHnd	mh,
		int *	dlc
	)

Get the data length code for a message.

Parameters

[in]	mh	A message handle
[out]	dlc	The data length code

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

See also: kvaDbSetMsgDlc()

Examples:: example/c/candb_sample.c.

◆ kvaDbGetMsgFlags()

KvaDbStatus kvaDbGetMsgFlags	(	KvaDbMessageHnd	mh,
		unsigned int *	flags
	)

Get the message flags, KVADB_MESSAGE_xxx

Parameters

[in]	mh	A message handle
[out]	flags	The message flags, KVADB_MESSAGE_xxx

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

See also: kvaDbSetMsgFlags()

◆ kvaDbGetMsgId()

KvaDbStatus kvaDbGetMsgId	(	KvaDbMessageHnd	mh,
		unsigned int *	id,
		unsigned int *	flags
	)

Get message identifier and flags. If message is of extended CAN format, its id will contain KVADB_MESSAGE_EXT flag. This call is deprecated. Consider using kvaDbGetMsgIdEx() and kvaDbGetMsgFlags() instead.

Parameters

[in]	mh	A message handle.
[out]	id	The identifier.
[out]	flags	The flags, KVADB_MESSAGE_xxx

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

See also: kvaDbSetMsgId()

Examples:: example/c/candb_sample.c.

◆ kvaDbGetMsgIdEx()

KvaDbStatus kvaDbGetMsgIdEx	(	KvaDbMessageHnd	mh,
		unsigned int *	id
	)

Get the message identifier. The message identifier will not contain any flags.

Parameters

[in]	mh	A message handle
[out]	id	The message identifier

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

See also: kvaDbSetMsgIdEx()

◆ kvaDbGetMsgMux()

KvaDbStatus kvaDbGetMsgMux	(	KvaDbMessageHnd	mh,
		KvaDbSignalHnd *	sh
	)

Returns handle to a multiplexer signal of a given message. If there are no multiplexer signal, KvaDbOk will be returned and *sh will be NULL.

Parameters

[in]	mh	A message handle
[out]	sh	Multiplexer signal handle

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

◆ kvaDbGetMsgName()

KvaDbStatus kvaDbGetMsgName	(	KvaDbMessageHnd	mh,
		char *	buf,
		size_t	buflen
	)

Get the name of a message as a null-terminated string. A truncated string will be returned if buf is too small and status will be kvaDbOK.

Parameters

[in]	mh	A message handle
[out]	buf	The buffer that will hold the message name
[in]	buflen	The length of the buffer.

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

See also: kvaDbSetMsgName(), kvaDbGetMsgQualifiedName()

Examples:: example/c/candb_sample.c.

◆ kvaDbGetMsgQualifiedName()

KvaDbStatus kvaDbGetMsgQualifiedName	(	KvaDbMessageHnd	mh,
		char *	buf,
		size_t	buflen
	)

Get the qualified message name, which is the database name and the message name separated by a dot, as a null-terminated string. An empty string will be returned if buf is too small and status will be kvaDbOK.

Parameters

[in]	mh	A message handle
[out]	buf	The buffer that will hold the qualified message name
[in]	buflen	The length of the buffer

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

See also: kvaDbGetMsgName()

Examples:: example/c/candb_sample.c.

◆ kvaDbGetMsgSendNode()

KvaDbStatus kvaDbGetMsgSendNode	(	KvaDbMessageHnd	mh,
		KvaDbNodeHnd *	nh
	)

Get send node for a message

Parameters

[in]	mh	A message handle
[out]	nh	A node handle

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

See also: kvaDbSetMsgSendNode()

◆ kvaDbGetNextMsg()

KvaDbStatus kvaDbGetNextMsg	(	KvaDbHnd	dh,
		KvaDbMessageHnd *	mh
	)

Get a handle to the next message in a database. Should be called after kvaDbGetFirstMsg().

Parameters

[in]	dh	A database handle
[out]	mh	A message handle

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

See also: kvaDbGetFirstMsg()

Examples:: example/c/candb_sample.c.

◆ kvaDbMsgDlcToBytes()

KvaDbStatus kvaDbMsgDlcToBytes	(	KvaDbProtocolType	prot,
		unsigned int	dlc,
		unsigned int *	numBytes
	)

Translates message dlc to number of bytes for a given protocol

Parameters

[in]	prot	A protocol type
[in]	dlc	Raw message dlc
[out]	numBytes	Number of bytes

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

See also: kvaDbGetProtocol()

◆ kvaDbSetMsgComment()

KvaDbStatus kvaDbSetMsgComment	(	KvaDbMessageHnd	mh,
		char *	buf
	)

Set the message comment.

Parameters

[in]	mh	A message handle
[in]	buf	The buffer that contains the message comment

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

See also: kvaDbGetMsgComment()

Examples:: example/c/candb_sample.c.

◆ kvaDbSetMsgDlc()

KvaDbStatus kvaDbSetMsgDlc	(	KvaDbMessageHnd	mh,
		int	dlc
	)

Set the data length code for a message.

Parameters

[in]	mh	A message handle
[in]	dlc	The data length code

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

See also: kvaDbGetMsgDlc()

Examples:: example/c/candb_sample.c, and example/c/j1939_db.c.

◆ kvaDbSetMsgFlags()

KvaDbStatus kvaDbSetMsgFlags	(	KvaDbMessageHnd	mh,
		unsigned int	flags
	)

Set the message flags, KVADB_MESSAGE_xxx

Parameters

[in]	mh	A message handle
[in]	flags	The message flags, KVADB_MESSAGE_xxx

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

See also: kvaDbGetMsgFlags()

Examples:: example/c/j1939_db.c.

◆ kvaDbSetMsgId()

KvaDbStatus kvaDbSetMsgId	(	KvaDbMessageHnd	mh,
		unsigned int	id,
		unsigned int	flags
	)

Set the message identifier and flags. If message is of extended CAN format, its id should contain KVADB_MESSAGE_EXT flag. This call is deprecated, consider using kvaDbSetMsgIdEx() and kvaDbSetMsgFlags() instead.

Parameters

[in]	mh	A message handle
[in]	id	The message identifier
[in]	flags	The message flags, KVADB_MESSAGE_xxx

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

See also: kvaDbGetMsgId()

Examples:: example/c/candb_sample.c.

◆ kvaDbSetMsgIdEx()

KvaDbStatus kvaDbSetMsgIdEx	(	KvaDbMessageHnd	mh,
		unsigned int	id
	)

Set the message identifier. The message identifier should not contain any flags.

Parameters

[in]	mh	A message handle
[in]	id	The message identifier

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

See also: kvaDbGetMsgIdEx()

Examples:: example/c/j1939_db.c.

◆ kvaDbSetMsgName()

KvaDbStatus kvaDbSetMsgName	(	KvaDbMessageHnd	mh,
		char *	buf
	)

Set the message name.

Parameters

[in]	mh	A message handle
[in]	buf	The buffer that contains the message name.

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

Note: Please note that allowed characters in identiers are digits, letters and "_" (underscore).
Identifiers shall also start with a letter or underscore.

See also: kvaDbGetMsgName()

Examples:: example/c/candb_sample.c, and example/c/j1939_db.c.

◆ kvaDbSetMsgSendNode()

KvaDbStatus kvaDbSetMsgSendNode	(	KvaDbMessageHnd	mh,
		KvaDbNodeHnd	nh
	)

Set send node for a message

Parameters

[in]	mh	A message handle
[in]	nh	A node handle

Returns: kvaDbOK (zero) if success; kvaDbErr_xxx (negative) if failure

See also: kvaDbGetMsgSendNode()

Functions

Detailed Description

Function Documentation

◆ kvaDbAddMsg()

◆ kvaDbBytesToMsgDlc()

◆ kvaDbDeleteMsg()

◆ kvaDbGetCanMsgFlags()

◆ kvaDbGetFirstMsg()

◆ kvaDbGetMsgById()

◆ kvaDbGetMsgByIdEx()

◆ kvaDbGetMsgByName()

◆ kvaDbGetMsgByPGN()

◆ kvaDbGetMsgByPGNEx()

◆ kvaDbGetMsgComment()

◆ kvaDbGetMsgDlc()

◆ kvaDbGetMsgFlags()

◆ kvaDbGetMsgId()

◆ kvaDbGetMsgIdEx()

◆ kvaDbGetMsgMux()

◆ kvaDbGetMsgName()

◆ kvaDbGetMsgQualifiedName()

◆ kvaDbGetMsgSendNode()

◆ kvaDbGetNextMsg()

◆ kvaDbMsgDlcToBytes()

◆ kvaDbSetMsgComment()

◆ kvaDbSetMsgDlc()

◆ kvaDbSetMsgFlags()

◆ kvaDbSetMsgId()

◆ kvaDbSetMsgIdEx()

◆ kvaDbSetMsgName()

◆ kvaDbSetMsgSendNode()