Hello


I'd like to share a python script I wrote to convert a damos (A2L) to fit a new dump.
I wrote it in python to allow everybody to improve it. (and check there is no worm in it)


You can imagine that the damos need to be as close as possible of the new dump.
I mean same hardware but different software is ok but it's not applicable with different hardware.

The script use a valid damos/dump couple in entry and a new dump to produce a new damos file.

Supported ecus: ME7.5, MED91, EDC16U34, MED17 and SID208.
The format of the dumps can be Intel Hex, Motorola S19 or Binary.
The size must be 1024kb, 1504kb, 2048kb or 4096kb.

It's possible to add support to new ecus by adding a new ecu definition in the script.
For that the script contains a supportedeculist variable which hold ecu definition dictionaries.
Ex:
# MED17 - 0x80045320
  "ecu"              : "MED17",
  "cpu"              : "TriCore",
  "addresslen"     : 10,
  "addressstart"  : '0x80',
  "addressformat": '0x80%06X\n'
Meanings:
#  "ecu"              : Ecu string found in A2L MOD_PAR entry                                                                        (Ex: ECU "MED17")
#  "cpu"              : Cpu type string found in A2L MOD_PAR entry                                                                 (Ex: CPU_TYPE "TriCore")
#  "addresslen"     : Length of address string in A2L CHARACTERISTIC records                                                (Ex: 0x800574D8 -> 10)
#  "addressstart"  : Sub string to remove to obtain an hex address where data can be found in dump file            (Ex: 0x800574D8 -> '0x80')
#  "addressformat": Format use to rebuild an address line where 6 is the len of hex address without addressstart (Ex: 0x800574D8 -> '0x80%06X\n')

The script will ask for an ecu and cpu type if there is no MOD_PAR entry in the A2L.


Here is how the script process:
- Read the damos file and create an address table
- Read the original dump
- Read the new dump
- Correct the address table by searching best match pattern from original dump in new dump using dycothomic search method from original address
- Linearize the address table
- Create a new damos using the address table

And here the command line to execute it:

It take less than 10 minutes to correct most damos on my computer.
There may be some mistakes due to linearization but it work pretty well in most case.

Feel free to test it and report if it fit your needs.  


Edit:
Update script to version 1.1.
# ChangeLog  : v1.0 - Original release
#                          - Add MED17 Ecus support
#                          - Add Intel Hex dump support

Edit2:
Update script to version 1.2.
# ChangeLog  : v1.2 - Add ME7.5 Ecus support

Edit3:
# ChangeLog  : v1.3 - Add MED9.1 Ecus support
#                          - Add EDC16U34 Ecus support
#                          - Add Motorola S19 dump support
#                          - Add supported ecu list to allow adding ecu type (See "Supported Ecu List")

Edit4:
# ChangeLog  : v1.4 - Rewrite Intel Hex and Motorola S19 support to handle address bases
#                          - Add SID208 Ecus support


Best regards

Polo

I created damos with this script for my 2 cars.
A Seat Altea 1.9TDI and a Scirocco 1.4TSI 118kw both modded and working perfectly. 
Though the Scirocco was a pain to mod but that's not related to the damos. (MED17.5.5...)

I double checked all "important" address of the new damos by comparison in winols when I wrote the script.
I'm currently working on converting the Scirocco to E85 and I can confirm that singles like KRKATE are at good address.

Remember to use a damos as close as possible of your hardware/software to minimize mistakes.

Best regards

Polo

Hello

I updated the script to v1.1 with binary dump file of 1504ko support.
So you can now mix Intel hex and binary files.

Ex:
Best regards

Polo

Hello

I just updated the first post with a new version with ME7 support.
I'll have to find a better way to identify the ecu type...

I first created the script for my Seat Altea 1.9TDI but I mess the script when I convert it to MED17 and I can't find my old backup...
I'm no more able to create a correct damos for my Seat Altea 1.9TDI.
I'll try to find my backup and restore support for EDC16 also.

Best regards

Polo

Tested it with MED 9.1 file. Script don`t work for me, it shows error "Input is not a file !!!"

Could somebody upload a working example, please.

Hello

Here my test folder for MED9 and MED17.
https://mega.nz/#!iFcQxArS!BNg0BZWY8XtKNFdt8f4uegHMUZ9K4gThWKBk-y8akgU

There is 2 damos + dump of Golf 5 2.0T MED9.1 and 2 damos + dump of Golf 6 1.4TSI MED17.5.5.
So it's easy to compare created damos with real ones.

Here the commands MED9:
And for MED17:

Best regards

Polo

Line 411 and 644 need * in:
dumplinebin[2] * 0x10000

Thanks for the report. 
I just updated the file in first post.

Best regards

Polo