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.