jsondbc

Simple go cli to convert CAN models in JSON and dbc.

Installation

Download the binary in the release section

Usage

Converting from json to dbc:

jsondbc convert --in my_model.json --out my_dbc_model.dbc

Converting from dbc to json:

jsondbc convert --in my_model.dbc --out my_dbc_model.json

CAN Model

field	type	description
version	string	The version of the CAN model
baudrate	number	The baud rate of the CAN model
nodes	map[string]Node	A map containing the nodes as value and the node names as key
general_attributes	map[string]Attribute	A map containing the general attributes as value and the attribute names as key
node_attributes	map[string]Attribute	A map containing the node attributes as value and the attribute names as key
message_attributes	map[string]Attribute	A map containing the message attributes as value and the attribute names as key
signal_attributes	map[string]Attribute	A map containing the signal attributes as value and the attribute names as key
signal_enums	map[string]SignalEnum	A map containing the global defined signal enums that can be referenced by signals and the enum names as key
messages	map[string]Message	A map containig the messages as value and the message names as key

Attribute

field	type	description
int	AttributeInt	Set's the attribute as int
string	AttributeString	Set's the attribute as string
float	AttributeFloat	Set's the attribute as float
enum	AttributeEnum	Set's the attribute as enum

AttributeInt

field	type	description
default	number	The attribute's default value
from	number	The attribute's lower bound value
to	number	The attribute's uppuer bound value

AttributeString

field	type	description
default	string	The attribute's default value

AttributeFloat

field	type	description
default	number	The attribute's default value
from	number	The attribute's lower bound value
to	number	The attribute's uppuer bound value

AttributeEnum

field	type	description
default	string	The attribute's default value
values	string[]	The list of possible attribute's values

Node

field	type	description
description	string	The node's description
attributes	map[string]any	A map with key the attribute name and a value to assign as map's value. The value must be an int if the attribute is of type int, string for type string, an enum value (string) for type enum

Message

field	type	description	required
id	number	The message's id in decimal	true
period_ms (deprecated)	number	The message's period in ms. If set, it creates an int attribute named "MsgPeriodMS" with the corrisponding period	false
cycle_time	number	The message's cycle time in ms. If set, an int attribute named "GenMsgCycleTime" is created in the dbc file	false
send_type	NoMsgSendType | Cyclic | IfActive | cyclicIfActive | NotUsed	The message's send type. If set, an enum attribute named "GenMsgSendType" is created in the dbc file	false
description	string	The message's description	false
length	number	The message's length (bytes count)	true
sender	string	The message's sender name	false
signals	map[string]Signal	A map containing the message's signals, with the signal name as key	true
attributes	map[string]any	A map with key the attribute name and a value to assign as map's value. The value must be an int if the attribute is of type int, string for type string, an enum value (string) for type enum	false

Signal

field	type	description	required	default
start_bit	number	The signal's start bit	true
size	number	The signal's size (bits count)	true
description	string	The signal's description	false
send_type	NoSigSendType | Cyclic | OnWrite | OnWriteWithRepetition | OnChange | OnChangeWithRepetition | IfActive | IfActiveWithRepetition | NotUsed	The signal's send type. If set, an enum attribute named "GenSigSendType" is created in the dbc file	false
endianness	little | big	The signal's byte order	false	little
signed	boolean	The signal's value type	false	false
receivers	string[]	The signal's receivers list	false
scale	number	The signal's scale	false	1
offset	number	The signal's offset	false	0
min	number	The signal's minimum value	false	0
max	number	The signal's maximum value	true
enum	SignalEnum	An enum to be assigned to the signal. ATTENTION signal start_bit, size, and max are still required	false
enum_ref	string	A string matching the name of a signal enum defined globally in the signal_enums field (see example). If both enum and enum_ref are present, only the former will be used	false
mux_group	map[string]Signal	A map with key the name of a multiplexed signal and a Signal as value. If set, the signal becomes a multiplexor (see example)	false
mux_switch	number	The value a multiplexor signal as to be in order to map to the multiplexed signal	Only if part of mux_group
attributes	map[string]any	A map with key the attribute name and a value to assign as map's value. The value must be an int if the attribute is of type int, string for type string, an enum value (string) for type enum	false

SignalEnum

type	description
map[string]number	A map that has as key the human readable name of an enum value, and a number for the actual value