Software On ELM Street - OBD2 Software Development

[VX L67 Getrag]

here's some logging I did today with my scan tool reading same data list as previous...

data sent 131107.txt

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Frame Counter 131107.txt

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Monitored Data.txt

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Hope it helps!

[Tazzi]

Legend!

Yep, still does the same thing. Might try again later.. Trying to work out how I got it displaying data before.

[Tazzi]

Have had no luck fooling the tech2 with my current setup. If I reduce the delay time any further between calls I start getting error as the elm does not keep up. Will have to wait for the second elm.

So whats next... Could attempt to continue on with the faults identifying.. but that seems to be fairly sorted out.. unless anyone knows different? All the "GM specific" codes I pulled have been already identified so Id say thats been well defined already... although may continue having a snoop.

Or alternatively, move onto messing with the CAN stuff some more, see how the tech2 handles all of that. Although I suspect this have the same issue as VPW and multiple requests will be made very quickly and a single elm will not keep up.

[VX L67 Getrag]

Finally remembered to test today under winxp & now it doesn't crash but pops up with message in connection window saying an error has occurred?

I was going to listen in on a captiva to see what comms it uses!

[Tazzi]

Finally remembered to test today under winxp & now it doesn't crash but pops up with message in connection window saying an error has occurred?

I was going to listen in on a captiva to see what comms it uses!

Ahhhhh Not sure on that one. Ill have to run it through my virtual machines and see what they do. Have w7,xp,NT ect all running on veritual machines so ill see whats working and what isnt.

But I see no reason why it wouldnt? Did youhave the 115200 baud connection turned on or off?

The newest version Im current tinkering with seems to make a better connection to the 115200 baud update, so this may be the issue our having here? If its not that.. then you got me stumped!

Generally a "Error has occured" is the very very broad error that has happened somewhere where I havent allocated a "specific" error. So Ill have to go through and find any spots Im missing.

Id be interested in seeing if other Holden cars have similar communications.. never actually tried before.

I wont be able to do any updates for another... 13 days and 5 hours. Not that Im counting

[antus]

With 115200 keep in mind that the elm is only main chip. The various ebay devices have different serial->usb interface chips between the elm and the pc. There is nothing to say that the speed change has been implemented on all of the usb->serial chips. This likely why some would work and some wouldnt. If you opened them up and checked the chips, I bet the ones that work and the ones that dont have a different chip in there.

[Tazzi]

With 115200 keep in mind that the elm is only main chip. The various ebay devices have different serial->usb interface chips between the elm and the pc. There is nothing to say that the speed change has been implemented on all of the usb->serial chips. This likely why some would work and some wouldnt. If you opened them up and checked the chips, I bet the ones that work and the ones that dont have a different chip in there.

Hmm didnt think of that. Makes sense though.

Also my elm works on bench without any external power supply either whereas others didnt. Could be another elm design/chip related thing going on there.

[VX L67 Getrag]

Taz, no I knew the 115200 comms was broken still so I made sure I un-ticked that before trying to connect with winxp!
I did think though now it doesn't crash I may be able to get a monitor log of it having issue & might see whats going on through that?

Here is the log I did on the captiva I did J1850 first & tried VIN & then listening & then did the same thing for each protocol in this order;
CAN11 HI, CAN11 LO, CAN29 HI, CAN29 LO & then back to CAN11 HI to make sure it hadn't locked up or anything as there was some weird messages.

It seemed to be communicating mainly on CAN11 but did get some weird stuff through CAN29 LO but not HI!

[delcowizzid]

we should start an elm innards thread and see how many different chipsets we have least then we could work around making each work or assertain which dont

[VL400]

Here is an eBay special from a few years ago. Just the generic clone labelled ELM327 V1.5a

Been meaning to try your tool on a CAN vehicle for you, and also to get some logs as it connects ok using the current ELM compatible software around the place.

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