[iyonix-support] Re: USB to serial converter driver available?

In message <52a54c474f.Thomas@xxxxxxxxxxxxxxxxxxxxxxxxx>
          Thomas Milius <Thomas-Milius@xxxxxxxxxxx> wrote:

> Since a while I am having trouble with my car. Meanwhile I am knowing
> the motor management is defect and I am trying to repair it. Parallel to this
> I bought a new motor management unit. It arrived last week and seems to work
> fine. However it must be synchronized with the anti theft unit to work longer
> than a couple of seconds. I could try to put the car to a garage but this
> would be difficulty because the old motor management isn't working properly
> and the new one will only work for some seconds. And yes the car is Rover
> component based and the according protocol is not really documented so the
> garage might get trouble with the synchronisation.

Sounds like an interesting project. However if it was my car my 
priority would be getting the car going, so I would use a PC.

I have got a copy of the Ross-Tech software to use with my laptop and 
Audi. As I am using the freeware version it won't change many things, 
but it does provide interesting information.

Looking at what it is doing, there seems to be scope for doing this 
from RISC OS, if the interface driver can be made to work, so I will 
watch your progress with interest.

You are probably aware that in the case of Audi, and I suspect many 
others, making significant changes requires a logon, which I think is 
handled by the unit in the car, rather than the diagnostic software, 
so at the least you will need to find out the appropriate code 
numbers.

The Audi cables (USB to large serial plug) are available on Ebay from 
vendors in the States, at quite reasonable prices. The only difference 
for other makes is likely to be the type of plug - and even that may 
be standardised.

> I had the car already at
> a garage as the problem occurred but I wasn't satisfied with their results.
> It had a lot to do with trial and error playing around and I had to pay for
> it. So after three weeks without success I decided to play myself and put the
> car back to home. The next real Rover garage is meanwhile 50KM far away. Too
> far for a faulty machine.

> Regarding all aspects I came to the conclusion that it would make sense to
> buy me an OBD2-Interface and use it from my Iyonix. I am thinking of buying
> an OBD-DIAG 4000 adapter, which provides OBD access even for new cars on one
> side and an USB connection on the other side. USB connection is provided by
> fitting an USB to serial convert chip within the interface because the OBD
> chip uses a serial interface.

> So I am assuming that the device will identify itself as or similar as an USB
> to serial Interface. The ODB chip itself is said to behave like a modem using
> AT-commands establishing a connection to the required component of the car.
> After the conenction has been established the interface will behave like a
> terminal. You are sending some data and the component replies wth some
> output.

> Therefore my question:

> Is there a driver for the Castle USB stack for USB to serial interfaces?

> Did anyone got an USB-Modem working on the Iyonix? How are such USB-devices
> identifying theirselves?

> In best case (even this would not be Iyonix related) someone has already done
> something similar under RISC OS and can give me some hints.

> Many thanks for any hints in advance.

> Regards

> Thomas Milius
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-- 
Alan Adams, from Northamptonshire
alan.adams@xxxxxxxxxxxxxxxxxxxxxxxxxxx
http://www.nckc.org.uk/

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