PCM Edit Released Current Ver: 1.0.98

[Keith@HPTuners]

The only real function thing in here is the serial port communicaitons..

Cables
You can chose from B&B V1, V2 cable, Carputings LS1 Edit or an Other cable. When you select the cables it basically just sets the com info for you... Also..
V1 waits for 15 bytes before dumping to log
V2 dumps as it recieves the info. You must manually "reset" the V2 cable before you can send/recieve data.
Carputings cable sends a size byte first, then the data.
Other just dumps what it gets when it gets it no formatting

Send Data
To send a packet, just enter the hex you want to send with NO formatting...
to send $01 $6A $10 $F1 $3C
you would enter 016A10F13C.
Formmating the input string is not high on my priority list right now.

Packet Options
V2 Auto CSum. At the end of the B&B V2 packet is a csum byte. If you would like the software to calc it for you, check this.


It's a work in progress... give me your feedback.

[Keith@HPTuners]

FYI, I am able to unlock the PCM using the V1 cable..

I use mode $07 (No Filter) Because when I used either functional or physical modes I recieved no response.

Get the Seed:
01 6C 10 F1 27 01 00 00 00 00 00 00 05 07 00 04
Recieve:
01 6C 10 F1 67 01 <2 BYTE SEED> 00 00 00 07 00 00 04

Send the Key:
01 6C 10 F1 27 02 <2 BYTE KEY> 00 00 00 00 07 07 00 04
Recieve:
01 6C 10 F1 67 02 34 00 00 00 00 00 06 00 00 04


When I request upload:
01 6C 10 F1 35 01 00 0B 00 00 00 0A 07 00 04
I get this error:
01 6C F1 10 7F 35 01 00 0B 00 00 0B 33 00 04

I request 10 bytes as to not overflow the cable. Hmmmmmmmmmmm.

[Keith@HPTuners]

[Keith@HPTuners]

So who is playing with this yet? I'm updating it constantly.

[ls1tools]

When I request upload:
01 6C 10 F1 35 01 00 0B 00 00 00 0A 07 00 04
I get this error:
01 6C F1 10 7F 35 01 00 0B 00 00 0B 33 00 04

I request 10 bytes as to not overflow the cable. Hmmmmmmmmmmm.

Response code $33 = Security Access Denied.
Paul

[Keith@HPTuners]

Excellent. I wonder if there is a timelimit/timeout for security mode access. For now I am doing a lot of my stuff by hand which takes a handful of seconds to enter.

[Casey]

The delay was 10 seconds on the LT1.....

[Casey]

But then again, the key for the LT1 was the inverse of the seed.

No way we are getting off that easy this time.


Super_Sport_x2,

[lndshrk]

Excellent. I wonder if there is a timelimit/timeout for security mode access. For now I am doing a lot of my stuff by hand which takes a handful of seconds to enter.

Time to cheat then, eh?

Write yourself a little routine to do both, the $27 and
then the $35 right after.

[Keith@HPTuners]

heh.. check out the blurred buttons. I need to do some more testing though.

[lndshrk]

Don't forget the call to disable normal comms.

Mode 28.. Subfunction 00

[Keith@HPTuners]

heh. Disable normal comms works for about 4 seconds, then you get a flury of data back. So you need to call it every few seconds.

Jim, what cable are you using?

I updated the version... I added quick general quick commands for disable normal comm and get seed. They should work on any cable you have selected. I haven't tested it yet but my packets look sound.

[lndshrk]

None, until one of my own design is finished.

None of the cables out there can handle "block transfers"
aka mode $36 that I know of.

[RoboGeek]

I'll try this out on some of my experimental cables as soon as race season slows down a bit. Gotta find me a PCM though - wifey wont let me near the new car with tools in my hand!

BTW.. we are 2nd in points right now! 140 back

[Chris@HPTuners]

you need to have ignition on for at least 10secs before trying to connect at least with edit you do anyway

[Keith@HPTuners]

I recieved an e-mail with Carputings LS1 Edit spec.. so as long as carputing doesn't have any problems and This software doesn't violate any copyrights or laws, then I will leave the carputing option in there. It's such a simple packet format too though.

A comment was brought up about the cable being proprietary.. I had the EULA of the cable forwarded to me and I found nothing regarding only being able to use the cable with carputings software.

Heck, you bought it right? You're not reverse engineering it.. why not use it at your own risk?

I also added an option to save your log file.

[RoboGeek]

I dont think their cable was propietary so much as it was expensive - like $500 for cable and software. As far as I know they only sell them bundled.. but I may be wrong...

[Chris@HPTuners]

i have 2 of the 4 cables you mention Magnus ;D

Been spending my time on other parts of the code for now though (Autolearn security, s/c boost control, 2 bar MAP, MAFless cals, finding any spare outputs that could be used for other cool stuff etc.)

my VPW knowledge sucks although i can follow your examples i'm missing all of the details of the mode options - i guess they are in a doc somewhere?

[Keith@HPTuners]

All my VPW knowledge comes from this GM VPW page and the flash protocol thread.

[Keith@HPTuners]

In v 1.0.38 I believe I fixed the autotap v2 output.. so that one full packet is on its own line to ease confusion.

Also to note, you should turn your car on, THEN plug in your cable to the vehicle, THEN turn on my software. If the cable spits a packet back at you half way through, the logging will be a little flawed because the length bytes don't match up. To fix this problem if it occurs, just disconnect, clear the log, and reconnect.