This script parses Vector CAN DBs (.dbc files), such as can be created using Vector CANdb++. More...

Functions
void	filter329 ()
	Initialises globals. More...

void	filter439 ()
	Strip DOS line endings and make sure there is a new line symbol at the end of the line, so multiline definitions can be parsed. More...

void	error (var no, var msg)
	Prints an error message on stderr and exits. More...

void	warn (var msg)
	Prints a warning message on stderr. More...

void	debug (var msg)
	Prints a debugging message on stderr. More...

void	buffer ()
	Makes sure $0 is not empty. More...

var	fetchStr ()
	Special function to fetch a string from the buffer. More...

var	fetch (var types)
	Fetch the next token from the input buffer, matching a given type. More...

var	whole (var re)
	Returns the expresion with ^ and $ at beginning and end to make ~ match entire strings only. More...

var	strip (var str)
	Remove quotes and escapes from strings. More...

var	getContext (var str)
	Returns the context type for a string. More...

void	getUniqueEnum (var ret, var enum, var val, var desc)
	Generates a unique name for a value table entry. More...

void	fsm_discard ()
	Discards buffered symbols until an empty line is encountered. More...

void	fsm_ecu ()
	Parse an ECU definition. More...

void	fsm_enum ()
	Parse a value table. More...

void	fsm_sig_enum ()
	Parse a value table bound to a signal. More...

void	fsm_env ()
	Parse an environment variable. More...

void	fsm_env_data ()
	Parse the data length count of DATA type environment variables. More...

void	fsm_msg ()
	Parse a message definition. More...

void	fsm_sig ()
	Parse a signal definition. More...

void	fsm_comment ()
	Parse comments. More...

void	fsm_attrrange ()
	Parse a custom attribute definition. More...

void	fsm_relattrrange ()
	Parse a custom relation attribute definition. More...

void	fsm_attrdefault ()
	Parse attribute default value. More...

var	fetch_attrval (var attribute)
	Fetches an attribute value of a given type from the read buffer. More...

void	fsm_attr ()
	Parse an attribute value. More...

void	fsm_relattr ()
	Parse a relation attribute value. More...

void	fsm_symbols ()
	Parse the symbol table at the beginning of a .dbc file, bail if unsupported symbols are encountered. More...

void	fsm_tx ()
	Gets a list of ECUs that transmit a certain message. More...

void	fsm_siggrp ()
	Gets a signal group. More...

void	fsm_start ()
	Pick tokens from the input buffer and call the respective parsing functions. More...

void	filter1434 ()
	This starts the line wise parsing of the DBC file. More...

var	euclid (var a, var b)
	Returns the greatest common divider (GCD). More...

var	rationalFmt (var n, var d)
	Returns a compact string representation of a rational number. More...

var	rationalN (var val, var base, var precision)
	Returns a rational string representation of a real value. More...

var	rationalD (var val, var base, var precision)
	Returns a rational string representation of a real value. More...

var	rational (var val, var precision)
	Returns a rational string representation of a real value. More...

var	filter (var str, var filters, var template)
	Applies filter chains to a given string. More...

var	tpl_line (var data, var line, var template)
	Populates a template line with data. More...

var	template (var data, var name)
	Reads a template, substitutes place holders with data from a given array and returns it. More...

void	setTypes (var array, var bitpos)
	Set the necessary type to be able to shift something to the given bit. More...

var	sigident (var sig)
	Returns a unique signal identifier using the sigident.tpl file. More...

var	siggrpident (var sg)
	Returns a unique signal group identifier using the sigident.tpl file. More...

var	msgid (var id)
	Generates a printable message id be removing the extended bit. More...

var	msgidext (var id)
	Tests a message id for the extended bit. More...

void	filter1841 ()
	Print the DBC files to stdout. More...

Detailed Description

This script parses Vector CAN DBs (.dbc files), such as can be created using Vector CANdb++.

A subset of the parsed information is output using a set of templates.

Note: Pipe the input through "iconv -f CP1252" so GNU AWK doesn't choke on non-UTF-8 characters in comments.

Warning: Templates are subject to change, which may break the output for your use case. To prevent this retain your own copy of the templates directory and set the TEMPLATES variable. Old templates will continue working, though they might cause deprecation warnings.

Environment

The script uses certain environment variables.

DEBUG

Value	Effect
0, ""	Debugging output is deactivated
1, any string != ""	Debugging output to stderr is activated
> 1	Additionally any string read is output

TEMPLATES

This variable can be used to pass the template directory to the script.

If the LIBPROJDIR environment variable is set it defaults to ${LIBPROJDIR}/scripts/templates.dbc2c, otherwise it defaults to the relative path scripts/templates.dbc2c.

DATE

This can be used to define the date string provided to header.tpl.

It defaults to the output of the date command.

Value Tables

Since values in value tables only consist of a number and description, the first word of this description is used as a symbolic name for a given value.

All non-alhpanumeric characters of this first word will be converted to underscores. Redundancies will be resolved by appending the value to the word that signifies the name.

This functionality is implemented in the function getUniqueEnum().

Templates

This section describes the templates that are used by the script and the arguments passed to them. Templates are listed in the chronological order of use.

Special Attributes

Some of the arguments provided depend on custom attributes:

Template	Argument	Attribute	Object
sig.tpl	start	GenSigStartValue	Signal
msg.tpl	fast	GenMsgCycleTimeFast	Message
msg.tpl	cycle	GenMsgCycleTime	Message
msg.tpl	delay	GenMsgDelayTime	Message
msg.tpl	send	GenMsgSendType	Message
timeout.tpl	timeout	GenSigTimeoutTime	Relation (ECU to Signal)

These and more attributes are specified by the Vector Interaction Layer.

Inserting Data

Templates are arbitrary text files that are provided with a set of arguments. Arguments have a symbolic name through which they can be used. In the following sections they are called fields, because they are provided to the template() function in an associative array.

Inserting data into a template is simple:

    <:name:>

The previous example adds the data in the field name into the file. It can be surrounded by additional context:

    #define <:name:> <:value:>

If name is "FOO_BAR" and value is 1337, this line would be resolved to:

    #define FOO_BAR 1337

It may be desired to reformat some of those values. A number of special filters (see filter()) as well es printf(3) style formatting is available. E.g. name can be converted to camel case and value to hex:

    #define <:name:camel:%-16s:> <:value:%#x:>

The output would look like this:

    #define fooBar           0x539

An important property of templates is that arguments may contain multiple lines. In that case the surrounding text is preserved for every line, which is useful to format multiline text or lists. This can be used to create lists or provide visual sugar around text:

    +----[ <:title:%-50s:> ]----+
    | <:text:%-60s:> |
    +--------------------------------------------------------------+

Output could look like this:

    +----[ Racecar by Matt Brown                              ]----+
    | 'Racecar - Searching for the Limit in Formula SAE'           |
    | is available for download from:                              |
    |     http://www.superfastmatt.com/2011/11/book.html           |
    +--------------------------------------------------------------+

Multi line data is treated as an array of individual lines. Besides descriptions in DBC files multiline data can also originate from lists provided by this script in order to allow describing the relations between ECUs, messages, signals etc..

In some cases it is prudent to print lines conditionally. For that conditionals are provided:

    <?name?>

If the reverenced field evaluates to true, the conditional is removed from the line. If it evaluates to false, the entire template line is omitted.

header.tpl

Used once with the following arguments:

Field	Type	Description
date	string	The current date
db	string[]	A list of identifiers for the parsed DBCs

file.tpl

Used for each input file with the following arguments:

Field	Type	Description
db	string	An identifier for this input file
file	string	The file name
comment	string[]	The comment text for this CANdb
ecu	string[]	A list of ECUs provided with this file

sigid.tpl

This template should only contain a single line that produces a unique identifier string for a signal, using the following arguments:

Field	Type	Description
msg	int	The message ID
msgname	string	The message name
sig	string	The signal name

Signal names are not globally unique, thus an identifier must contain a message reference to avoid name collisions.

ecu.tpl

Used for each ECU with the following arguments:

Field	Type	Description
ecu	string	An identifier for the ECU
comment	string[]	The comment text for this ECU
db	string	The input file identifier
txid	int[]	A list of message IDs belonging to messages sent by this ECU
txname	string[]	A list of message names sent by this ECU
rx	string[]	A list of signals received by this ECU
rxid	string[]	A list of unique signal identifiers received by this ECU

msg.tpl

Used for each message with the following arguments:

Field	Type	Description
msg	int	The message ID
name	string	The message name
comment	string[]	The comment text for this message
sig	string[]	A list of signal names contained in this message
sigid	string[]	A list of signal identifiers contained in this message
ecu	string	The ECU sending this message
ext	bool	Message ID is extended
dlc	int	The data length count
cycle	int	The cycle time of this message
fast	int	The fast cycle time of this message
delay	int	The minimum delay time between two transmissions
send	string	The send type (cyclic, spontaneous etc.)
sgid	string[]	A list of signal group ids
sgname	string[]	A list of signal group names

siggrp.tpl

Used for each signal group with the following arguments:

Field	Type	Description
id	string	The ID of the signal group (created using sigid.tpl)
name	string	The name of the signal group
msg	int	The ID of the message containing this signal group
msgname	string	The name of the message containing this signal group
sig	string[]	A list of signals belonging to this signal group
sigid	string[]	A list of signal identifers belonging to this signal group

sig.tpl

Used for each signal with the following arguments:

Field	Type	Description
name	string	The signal name
id	string	The unique signal identifier created with sigid.tpl
comment	string[]	The comment text for this signal
enum	bool	Indicates whether this signal has a value table
msg	int	The ID of the message sending this signal
sgid	string[]	The signal groups containing this signal
sgname	string[]	The names of the signal groups containing this signal
ecu	string[]	A list of the ECUs receiving this signal
intel	bool	Intel (little endian) style signal
motorola	bool	Motorola (big endian) style signal
signed	bool	The signal is signed
sbit	int	The start bit (meaning depends on endianess)
len	int	The signal length
start	int	The initial (default) signal value (raw)
calc16	string[]	A rational conversion function (see calc16)
min	int	The raw minimum value
max	int	The raw maximum value
off	int	The raw offset value
getbuf	string[]	The output of `sig_getbuf.tpl`
setbuf	string[]	The output of `sig_setbuf.tpl`

calc16

A rational conversion function for the raw signal value x and formatting factor fmt into a real value as defined by the linear factor and offset in the DBC, this function uses up to 16bit integers.

sig_getbuf.tpl, sig_setbuf.tpl

These templates can be used to construct static byte wise signal getters and setters.

For signed signals sig_getbuf.tpl is first called with the following arguments:

Field	Type	Description
sign	string	"-"
byte	int	The byte containing the most significant bit
align	int	The position of the most significant bit in the byte
msk	int	1
pos	int	The position in front of the entire read signal
int8	bool	Indicates whether an 8 bit integer suffices to contain the signal
int16	bool	Indicates whether a 16 bit integer suffices to contain the signal
int32	bool	Indicates whether a 32 bit integer suffices to contain the signal

These arguments can be used to duplicate the signed bit and shift it in front.

Both templates are used for each touched signal byte with the following arguments:

Field	Type	Description
sign	string	"+"
byte	int	The signal byte
align	int	The least significant bit within the byte belonging to the signal
msk	int	A bit mask to mask the aligned signal bits
pos	int	The position to shift the resulting bits to
int8	bool	Indicates whether an 8 bit integer suffices to address the desired bit
int16	bool	Indicates whether a 16 bit integer suffices to address the desired bit
int32	bool	Indicates whether a 32 bit integer suffices to address the desired bit

sig_enum.tpl, sig_enumval.tpl

In case a value table is assigned to the signal, sig_enum.tpl is called with all the arguments provided to sig.tpl.

For each entry in the value table sig_enumval.tpl is called with these additional arguments:

Field	Type	Description
enumval	int	The value
enumname	string	The name of the value
comment	string[]	The comment part of the value description

timeout.tpl

Used for each timeout with the following arguments:

Field	Type	Description
ecu	string	The ECU that times out
sig	string	The signal that is expected by the ECU
sigid	string	The unique identifier for the expected signal
timeout	int	The timeout time
msg	int	The ID of the CAN message containing the signal
msgname	string	The name of the CAN message containing the signal

enum.tpl

Invoked for every value table with the following arguments:

Field	Type	Description
enum	string	The name of the value table
db	string	The name of the CAN DB this enum was defined in

enumval.tpl

Invoked for every value defined in a value table. All the template arguments for enum.tpl are available in addition to the following arguments:

Field	Type	Description
val	int	The value
name	string	The symbolic name for the value
comment	string[]	The comment part of the value description

Function Documentation

§ filter329()

void filter329 ( )

Initialises globals.

Precondition

BEGIN

§ filter439()

void filter439 ( )

Strip DOS line endings and make sure there is a new line symbol at the end of the line, so multiline definitions can be parsed.

§ error()

void error	(	var	no,
		var	msg
	)

Prints an error message on stderr and exits.

Parameters

no	The number to set errno to
msg	The error message

§ warn()

void warn ( var msg )

Prints a warning message on stderr.

Parameters

msg	The message to print

§ debug()

void debug ( var msg )

Prints a debugging message on stderr.

The debugging message is only printed if DEBUG is set.

Parameters

msg	The message to print

§ buffer()

void buffer ( )

Makes sure $0 is not empty.

§ fetchStr()

var fetchStr ( )

Special function to fetch a string from the buffer.

This is a special case, because strings may span multiple lines. This function supports strings with up to 256 lines.

Returns: The fetched string

§ fetch()

var fetch ( var types )

Fetch the next token from the input buffer, matching a given type.

Parameters

types A regular expression describing the type of data to be fetched

Returns: The fetched string of data

§ whole()

var whole ( var re )

Returns the expresion with ^ and $ at beginning and end to make ~ match entire strings only.

Parameters

re	The expression to wrap

Returns: An expression for matching entire strings

§ strip()

var strip ( var str )

Remove quotes and escapes from strings.

This function is used by fetchStr().

Parameters

str	The string to unescape

Returns: The litreal string

§ getContext()

var getContext ( var str )

Returns the context type for a string.

Parameters

str	The string to interpret

Return values

sig	The context is a signal
msg	The context is a message
ecu	The context is an ECU
env	The context is an environment variable
db	The context is the DB

§ getUniqueEnum()

void getUniqueEnum	(	var	ret,
		var	enum,
		var	val,
		var	desc
	)

Generates a unique name for a value table entry.

Updates:

obj_enum_count[enum, name] = (int)

Sets the following fields in the given array:

name: A unique identifier
desc: The description
invalid: No valid identifier was in the description (bool)
duplicate: The identifier was already in use (bool)

Parameters

ret	An array to return the data set in
enum	The identifier of the value table
val	The value
desc	The description string to fetch a name from

§ fsm_discard()

void fsm_discard ( )

Discards buffered symbols until an empty line is encountered.

This is used to skip the list of supported symbols at the beginning of a dbc file.

§ fsm_ecu()

void fsm_ecu ( )

Parse an ECU definition.

Token: BU_

Creates:

* ind_ecu[cnt_ecu++] = ecu
* obj_ecu[ecu]
* obj_ecu_db[ecu] = FILENAME
* obj_db_ecu[FILENAME, p] = ecu

§ fsm_enum()

void fsm_enum ( )

Parse a value table.

Token: VAL_TABLE_

Creates:

1 ind_enum[cnt_enum++] = enum
1 obj_enum_db[enum] = FILENAME
* obj_enum_val[enum, i] = val
* obj_enum_name[enum, i] = name
* obj_enum_desc[enum, i] = desc
* obj_enum_invalid[enum, i] = (bool)
* obj_enum_duplicate[enum, i] = (bool)

§ fsm_sig_enum()

void fsm_sig_enum ( )

Parse a value table bound to a signal.

Token: VAL_

Creates:

1 obj_sig_enum[msgid, sig]
* obj_sig_enum_val[msgid, sig, i] = val
* obj_sig_enum_name[msgid, sig, i] = name
* obj_sig_enum_desc[enum, i] = desc
* obj_sig_enum_invalid[enum, i] = (bool)
* obj_sig_enum_duplicate[enum, i] = (bool)

§ fsm_env()

void fsm_env ( )

Parse an environment variable.

Token: EV_

Creates:

1 ind_env[cnt_env++] = name
1 obj_env[name] = val
1 obj_env_type[name] = ("INT"|"FLOAT"|"DATA")
1 obj_env_min[name] = (float)
1 obj_env_max[name] = (float)
1 obj_env_unit[name] = (string)

§ fsm_env_data()

void fsm_env_data ( )

Parse the data length count of DATA type environment variables.

Token: ENVVAR_DATA_

Creates:

1 obj_env_dlc[name] = (int)

§ fsm_msg()

void fsm_msg ( )

Parse a message definition.

Token: BO_

Creates:

1 ind_msg[cnt_msg++] = id
1 obj_msg_name[id] = name
1 obj_msg_dlc[id] = dlc
1 obj_msg_tx[id] = ecu
1 obj_ecu_tx[ecu, i] = id

§ fsm_sig()

void fsm_sig ( )

Parse a signal definition.

Token: SG_

Creates:

1 ind_sig[cnt_sig++] = msgid, name
1 obj_sig_name[msgid, name] = name
1 obj_sig_msgid[msgid, name] = msgid
1 obj_sig_multiplexor[msgid, name] = (bool)
1 obj_sig_multiplexed[msgid, name] = (int)
1 obj_sig_sbit[msgid, name] = (uint)
1 obj_sig_len[msgid, name] = (uint)
1 obj_sig_intel[msgid, name] = (bool)
1 obj_sig_signed[msgid, name] = (bool)
1 obj_sig_fac[msgid, name] = (float)
1 obj_sig_off[msgid, name] = (float)
1 obj_sig_min[msgid, name] = (float)
1 obj_sig_max[msgid, name] = (float)
1 obj_sig_unit[msgid, name] = (string)
* obj_sig_rx[msgid, name, i] = ecu
* obj_ecu_rx[ecu, p] = msgid, name
* obj_msg_sig[msgid, p] = msgid, name

§ fsm_comment()

void fsm_comment ( )

Parse comments.

Token: CM_

Creates one of:

1 obj_db_comment[FILENAME]
1 obj_ecu_comment[name]
1 obj_env_comment[name]
1 obj_msg_comment[msgid]
1 obj_sig_comment[msgid, name]

§ fsm_attrrange()

void fsm_attrrange ( )

Parse a custom attribute definition.

Token: BA_DEF_

Creates:

1 ind_attr[cnt_attr++] = name
1 obj_attr_context[name] = ("sig"|"msg"|"ecu"|"env"|"db")
1 obj_attr_type[name] = ("INT"|"ENUM"|"STRING")
? obj_attr_min[name] = (float)
? obj_attr_max[name] = (float)
* obj_attr_enum[name, i] = (string)
? obj_attr_str[name] = (string)

§ fsm_relattrrange()

void fsm_relattrrange ( )

Parse a custom relation attribute definition.

Token: BA_DEF_REL_

Creates:

1 ind_attr[cnt_attr++] = name
1 obj_attr_context[name] = "rel"
1 obj_attr_from[name] = ("sig"|"msg"|"ecu"|"env"|"db")
1 obj_attr_to[name] = ("sig"|"msg"|"ecu"|"env"|"db")
1 obj_attr_type[name] = ("INT"|"ENUM"|"STRING")
? obj_attr_min[name] = (float)
? obj_attr_max[name] = (float)
* obj_attr_enum[name, i] = (string)
? obj_attr_str[name] = (string)

§ fsm_attrdefault()

void fsm_attrdefault ( )

Parse attribute default value.

Token: BA_DEF_DEF_

Creates:

1 obj_attr_default[name] = value
* obj_msg_attr[msgid, name]
* obj_sig_attr[msgid, signame, name]
* obj_db_attr[FILENAME, name]

§ fetch_attrval()

var fetch_attrval ( var attribute )

Fetches an attribute value of a given type from the read buffer.

Parameters

attribute The attribute type identifier

Returns: The value of the chosen type

§ fsm_attr()

void fsm_attr ( )

Parse an attribute value.

Token: BA_

Creates one of:

1 obj_sig_attr[msgid, signame, name] = value
1 obj_msg_attr[msgid, name] = value
1 obj_ecu_attr[ecu, name] = value
1 obj_db_attr[FILENAME, name] = value

§ fsm_relattr()

void fsm_relattr ( )

Parse a relation attribute value.

Token: BA_REL_

Creates:

1 ind_rel_attr[cnt_rel_attr++] = name, from, to
1 obj_rel_attr[name, from, to] = value
1 obj_rel_attr_name[name, from, to] = name
1 obj_rel_attr_from[name, from, to] = from
1 obj_rel_attr_to[name, from, to] = to

The types of to and from are recorded in:

obj_attr_from[name]
obj_attr_to[name]

§ fsm_symbols()

void fsm_symbols ( )

Parse the symbol table at the beginning of a .dbc file, bail if unsupported symbols are encountered.

Token: NS_

§ fsm_tx()

void fsm_tx ( )

Gets a list of ECUs that transmit a certain message.

This may appear when several device options are available.

Token: BO_TX_BU_

Creates:

1 obj_ecu_tx[ecu, i] = msgid

§ fsm_siggrp()

void fsm_siggrp ( )

Gets a signal group.

Token: SIG_GROUP_

Creates:

1 ind_siggrp[cnt_siggrp++] = msgid, name
1 obj_siggrp[msgid, name] = name
1 obj_siggrp_msg[msgid, name] = msgid
* obj_siggrp_sig[msgid, name, i] = sig
* obj_sig_grp[msgid, sig, p] = msgid, name
* obj_msg_grp[msgid, p] = msgid, name

§ fsm_start()

void fsm_start ( )

Pick tokens from the input buffer and call the respective parsing functions.

Creates:

1 ind_db[cnt_db++] = FILENAME
1 obj_db[FILENAME]

§ filter1434()

void filter1434 ( )

This starts the line wise parsing of the DBC file.

§ euclid()

var euclid	(	var	a,
		var	b
	)

Returns the greatest common divider (GCD).

Parameters

a	An integer
b	An integer

Returns: The greatest common divider of a and b

§ rationalFmt()

var rationalFmt	(	var	n,
		var	d
	)

Returns a compact string representation of a rational number.

Parameters

n	The numerator
d	The denominator

Returns: The given rational number as a string

§ rationalN()

var rationalN	(	var	val,
		var	base,
		var	precision
	)

Returns a rational string representation of a real value.

This function builds the value around the numerator.

Parameters

val	The real value to return as a rational
base	The logical number base to generate the rational from
precision	The maximum number of bits for either rational component

Returns: A rational string representation of the given value

§ rationalD()

var rationalD	(	var	val,
		var	base,
		var	precision
	)

Returns a rational string representation of a real value.

This function builds the value around the denominator.

Parameters

val	The real value to return as a rational
base	The logical number base to generate the rational from
precision	The maximum number of bits for either rational component

Returns: A rational string representation of the given value

§ rational()

var rational	(	var	val,
		var	precision
	)

Returns a rational string representation of a real value.

This uses the different rational*() functions to find a minimal representation of the value.

Parameters

val	The real value to return as a rational
precision	The maximum number of bits for either rational component

Returns: A rational string representation of the given value

§ filter()

var filter	(	var	str,
		var	filters,
		var	template
	)

Applies filter chains to a given string.

Filters are a colon separated lists of the following filter commands:

Command	Effect
low	Convert to lower case
up	Convert to upper case
camel	Convert to camel case
uncamel	Convert camel case to _ separated
%...	A printf(3) style format specification

Parameters

str	The string to apply the filters to
filters	The list of filters
template	The name of the current template

Returns: The converted string

§ tpl_line()

var tpl_line	(	var	data,
		var	line,
		var	template
	)

Populates a template line with data.

Multiline data in a template needs to be in its own line.

Lines with empty data fields are removed.

Identifiers in templates have the following shape: "<:" name ":>"

Additionally boolean filters can be installed: "<?" name "?>"

If the variable addressed in the filter evaluetes to true, the filter is removed, otherwise the entire line is removed.

Parameters

data	The array containing field data
line	The line to perform substitutions in
template	The name of the template this line comes from, this is used to warn about deprecated arguments

Returns: The line(s) with performed substitutions

§ template()

var template	(	var	data,
		var	name
	)

Reads a template, substitutes place holders with data from a given array and returns it.

Parameters

data	The array to take data from
name	The name of the template file

Returns: The filled up template

§ setTypes()

void setTypes	(	var	array,
		var	bitpos
	)

Set the necessary type to be able to shift something to the given bit.

Creates the entries int8, int16 and int32 in the given arrays, with the fitting type set to the value 1 and the others to 0.

Parameters

array	The array put the entries into
bitpos	The bit that needs to be addressable

§ sigident()

var sigident ( var sig )

Returns a unique signal identifier using the sigident.tpl file.

Returns an empty string if the template is missing.

Parameters

sig	The signal reference consisting of message and signal name

Returns: A unique signal identifier

§ siggrpident()

var siggrpident ( var sg )

Returns a unique signal group identifier using the sigident.tpl file.

Returns an empty string if the template is missing.

Parameters

sg	The signal group reference consisting of message and signal name

Returns: A unique signal identifier

§ msgid()

var msgid ( var id )

Generates a printable message id be removing the extended bit.

Parameters

id	The message id to return

Returns: The message id without the extended bit

§ msgidext()

var msgidext ( var id )

Tests a message id for the extended bit.

Parameters

id	The message id to check

Return values

1	The message is extended
0	The message is not extended

§ filter1841()

void filter1841 ( )

Print the DBC files to stdout.

Precondition

END

Functions

Detailed Description

Environment

DEBUG

TEMPLATES

DATE

Value Tables

Templates

Special Attributes

Inserting Data

header.tpl

file.tpl

sigid.tpl

ecu.tpl

msg.tpl

siggrp.tpl

sig.tpl

calc16

sig_getbuf.tpl, sig_setbuf.tpl

sig_enum.tpl, sig_enumval.tpl

timeout.tpl

enum.tpl

enumval.tpl

Function Documentation

§ filter329()

§ filter439()

§ error()

§ warn()

§ debug()

§ buffer()

§ fetchStr()

§ fetch()

§ whole()

§ strip()

§ getContext()

§ getUniqueEnum()

§ fsm_discard()

§ fsm_ecu()

§ fsm_enum()

§ fsm_sig_enum()

§ fsm_env()

§ fsm_env_data()

§ fsm_msg()

§ fsm_sig()

§ fsm_comment()

§ fsm_attrrange()

§ fsm_relattrrange()

§ fsm_attrdefault()

§ fetch_attrval()

§ fsm_attr()

§ fsm_relattr()

§ fsm_symbols()

§ fsm_tx()

§ fsm_siggrp()

§ fsm_start()

§ filter1434()

§ euclid()

§ rationalFmt()

§ rationalN()

§ rationalD()

§ rational()

§ filter()

§ tpl_line()

§ template()

§ setTypes()

§ sigident()

§ siggrpident()

§ msgid()

§ msgidext()

§ filter1841()