russian

I do not own a MEGAsquirt myself and I am mostly interested in TunerStudio but since it's usually used with MS hopefully it would be fine to ask here.

Would anyone who connects his MEGAsquirt with TS over CAN be available to sniff the CANbus exchange between these two? Even a log with "Debug Log Comm" might actually work for me.

I am trying to implement CAN TunerStudio protocol in my own ECU, and unfortunately while EFI Analytics has nothing against they do not have much documentation to share.

aidandj

iTrader: (5)

If no one else can. I'll have one setup relatively soon. Might even be able to hook up a bus pirate to it.

stefanst

iTrader: (1)

Afaik most people connect TS to MS using USB, RS232 or TTL-serial. I wasn't even aware you could use CAN...

russian

from some default .ini files:
but it could be that I am misunderstanding it

stefanst

iTrader: (1)

Just looked at the communication setup in TS- CAN is not mentioned anywhere....

Sniffing the data packets send by MS on the CAN bus during normal operation should be fairly easy. I have messed with that a year or two back and was able to read all the broadcast data. Also sending data to the MS during normal operation seems pretty straightforward.

russian

does your .ini file say #set CAN_COMMANDS or #unset CAN_COMMANDS?

With my .ini file here is what I get when I create a project, I am not sure if you can adjust this once the project is already created:

aidandj

iTrader: (5)

You can program can devices through the MS with TS

russian

Do you mean you can program CAN devices through the MS while talking to MS via TTL, or do you mean you can program CAN devices including MS itself while connecting to MS via CAN?

aidandj

iTrader: (5)

#1

stefanst

iTrader: (1)

There's some decent info here:
Megasquirt Support Forum (MSEXTRA) ? Problem connecting after upgrade to ms3 R1.1.2 (View topic)

russian

Looks like I was totally wrong to assume that one can connect from TS to MS via smth like ELM327.

stefanst

iTrader: (1)

Of course sniffing the serial comm between TS and MS should be fairly easy, provided we're not using the on-board USB on MS3. But the earliest I would be able to help with that would be after Christmas.

russian

my ECU has TunerStudio serial/tcp protocol already. As I said, I was wrong thinking that there is another protocol which is not the case.

aidandj

iTrader: (5)