oleid / a2ltool

A tool to edit, merge and update a2l files

a2ltool

A tool to edit, merge and update a2l files

Features of a2ltool

• update the addresses of measurement variables and tunable parameters (characteristics) based on the elf file containing the compiled embedded application
• merge multiple a2l files into a single file
• add new measurements or characteristics based on the elf file
• display XCP connection parameters embedded in the a2l file, if any exist
• maintain the formatting and ordering of items in the a2l file during manipulation, so that the diff between the original and the updated/modified file is as small as possible
• Supports files up to a2l version 1.71 (current)

Usage examples

Merge two a2l files

a2ltool file1.a2l --merge file2.a2l --output merged.a2l

Update the addresses in an a2l file

a2ltool input.a2l --elffile input.elf --update --output updated.a2l

Create a new a2lfile and add a characteristic from an elf file to it

a2ltool --create --ellfile input.elf --characteristic my_var --output newfile.a2l

About a2l Files

A2l files describe measurement variables and tunable parameters of an embedded device (typically: an automotive ECU).

The consumer of the a2l file typically allows online calibraction over a protocol such as XCP and/or offline tuning by generating flashable parameter sets. There are several commercial tools for this purpose.

The a2l file format is specified by ASAM and is formally called ASAM MCD-2 MC.

Project Status

With a2ltool version 1.0 all initially planned features were fully implemented. Further improvements have been made as needed since then - see the changelog.