Vida CEM swapping

[Dudde]

Anybody have any idea about what parameter is for add amplifier and the trip computer in the config editor from T5Luke.

I can check in a few hours

[Dudde]

Added amp and trip computer

parameter.txt

(3.04 KiB) Downloaded 275 times

[Divxet]

Is there any possibility to clone a V70 - MY2003 cem with an arduino nano on the bench, or do I need to get another programmer with compatible software. Anyone have any suggestions to get me on the right track.

[T5Luke]

Did you read already complete? I have some software to copy complete...

[Divxet]

Did you read already complete? I have some software to copy complete...

I have done what you suggested but I also want to exchange my cem for another cem because my cem is not completely stable.
I am extremely grateful for the possibility to change the carconfig in my cem with your program that you posted here in the forum, but I want to be able to copy the information from mine to a new used one.

[T5Luke]

PMd you a working version but it is very terrible to work with, maybe i will get done a better version i can show to the forum...

[MiclMacl]

Thanks all for your help with this.

Just posting this, adding to the work that Dudde and T5Luke have been doing so far in mapping the parameters. Not sure if this is entirely correct in places but the majority does seem to match up I think (to my vehicle anyway). Unless the mapping has different values for different CEM types / years. Not sure what everyone makes of this.

[vtl]

Here you go: https://modunlock.com/wp/ £225.00 for 1 pin crack? o_O I hope the guy with MVS session id 750e9c72f03b40c7abcc29a8381d7316 contributes his share to MVS for our hard - yet free - work, so @matthew1 can pay for his server.

[T5Luke]

CEM Data Manager.jpg (39.22 KiB) Viewed 1698 times

I made this long ago for my self. It works, for me and i hope for anyone who needs it to copy his own CEM. For just changing config, better take the other tool and write only the config to your cem by dice...
viewtopic.php?t=85611&start=2270

The +5V over 1K resistor is only needed if you want to write complete cem, the bootloader is is in area 0x0 - 0x3FFF. Without pulling this point to +5V you cant erase or write this area. I took this resistor just for protection, today i don't use it anymore and put this pin directly to arduinos 5V pin. But be carefull if you pull it to gnd you will notice some smoke and your cem won't work anymore...

To read:
select port, click connect, click read complete, wait till all data runs through this window, it takes around 6min. When it stopped click save to file and you will get your bin.

To erase:
click on unlock write mode, and click on all erase blocks one after one on the right side to erase all areas on the new cem.

To write:
click on open binary, select the file you want to write, click write complete.

On arduino you need the firmware from ardubdm.bin, I lost my original sketch i have 0.9.6 here and i know i flashed 0.9.8 to my arduino. I should have it on some harddisk somewhere when i find it i will post here. But i was able to make a dump of my working arduino and you can flash this soft to your arduino by write.bat.

Edit write.bat to the matching port of your arduino:

COM.jpg (15.23 KiB) Viewed 1698 times

and run it to flash the correct firmare onto your arduino.

I know reading takes about 6mins and writing about 90mins and the gui doesnt update right by writing but it works and it is for free..

As always have fun with it and use or reuse this for your own projects.

[Mozambique11]

Hello

great thread, i've worked my way through all of it.
i've gone ahead and built myself a teensy setup but having issues when trying it... all I get in return are 0s. I've measured continuity across the board connections and am pretty sure it is wired up OK.

i don't have the twisted can wires as recommended but my understanding was that it would only increase the performance of the process, not yield a complete lack of data.

i've tried both in key 0 and key 1, and here relays clicking when I connect power to the teensy so something is happening at least...

CPU Maximum Frequency: 600000000
CPU Frequency: 180000000
Execution Rate: 180 cycles/us
PIN bytes to measure: 3
CAN low-speed init done.
Reading part number from ECU 0x40 on CAN_LS
CAN_LS ---> ID=000ffffe data=cb 40 b9 f0 00 00 00 00
CAN_LS ---> ID=000ffffe data=cb 40 b9 f0 00 00 00 00
CAN_LS ---> ID=000ffffe data=cb 40 b9 f0 00 00 00 00
CAN_LS ---> ID=000ffffe data=cb 40 b9 f0 00 00 00 00
CAN_LS ---> ID=000ffffe data=cb 40 b9 f0 00 00 00 00
CAN_LS ---> ID=000ffffe data=cb 40 b9 f0 00 00 00 00
CAN_LS ---> ID=000ffffe data=cb 40 b9 f0 00 00 00 00
CAN_LS ---> ID=000ffffe data=cb 40 b9 f0 00 00 00 00
CAN_LS ---> ID=000ffffe data=cb 40 b9 f0 00 00 00 00
CAN_LS ---> ID=000ffffe data=cb 40 b9 f0 00 00 00 00
CAN_LS ---> ID=000ffffe data=cb 40 b9 f0 00 00 00 00
Can't find part number on CAN-LS, trying CAN-HS at 500 Kbps
CAN high-speed init done.
Reading part number from ECU 0x50 on CAN_HS
CAN_HS ---> ID=000ffffe data=cb 50 b9 f0 00 00 00 00
CAN_HS ---> ID=000ffffe data=cb 50 b9 f0 00 00 00 00
CAN_HS ---> ID=000ffffe data=cb 50 b9 f0 00 00 00 00
CAN_HS ---> ID=000ffffe data=cb 50 b9 f0 00 00 00 00
CAN_HS ---> ID=000ffffe data=cb 50 b9 f0 00 00 00 00
CAN_HS ---> ID=000ffffe data=cb 50 b9 f0 00 00 00 00
CAN_HS ---> ID=000ffffe data=cb 50 b9 f0 00 00 00 00
CAN_HS ---> ID=000ffffe data=cb 50 b9 f0 00 00 00 00
CAN_HS ---> ID=000ffffe data=cb 50 b9 f0 00 00 00 00
CAN_HS ---> ID=000ffffe data=cb 50 b9 f0 00 00 00 00
CAN_HS ---> ID=000ffffe data=cb 50 b9 f0 00 00 00 00
Unknown CEM part number 0. Don't know what to do.
Resetting all ECUs.
CAN_HS ---> ID=000ffffe data=ff c8 00 00 00 00 00 00
CAN_LS ---> ID=000ffffe data=ff c8 00 00 00 00 00 00