DbcParserLib 1.0.4

DbcParser

Probably the first .NET DBC file parser. Includes packing and unpacking functionality for sending and receiving CAN signals.

Below is a quick preview of the extracted data using a Tesla dbc file taken from commaai/opendbc project:

Quickstart

Install the library via Nuget Packages and add at the top of your file:

using DbcParserLib;

Then to parse a dbc file use:

DbcParser dbc = new DbcParser();
dbc.ReadFromFile("C:\\your_dbc_file.dbc");

Access the nodes, messages and signals using:

dbc.Nodes[i]
dbc.Messages[j]
dbc.Messages[j].Signals[k]

Packing/Unpacking signals

Example for packing/unpacking a signal: 14 bits, Min: -61.92, Max: 101.91

Signal sig = new Signal();
sig.Length = 14;
sig.StartBit = 2;
sig.IsSigned = 1;
sig.ByteOrder = 1; // 0 = Big Endian (Motorola), 1 = Little Endian (Intel)
sig.Factor = 0.01;
sig.Offset = 20;
ulong TxMsg = dbc.TxSignalPack(-34.3, sig);
double val = dbc.RxSignalUnpack(TxMsg, sig);

Multiple signals can be packed before CAN transmission using:

ulong TxMsg = 0;
TxMsg |= dbc.TxSignalPack(value1, sig1);
TxMsg |= dbc.TxSignalPack(value2, sig2);
TxMsg |= dbc.TxSignalPack(value3, sig3);
// ...
// Send TxMsg on CAN

The user needs to make sure that the signals do not overlap with each other by properly specifying the Length and StartBit.

Contributions

Contributions are appreciated! Feel free to create pull requests to improve this library.