[Ovmsdev] Weirdest value conversion ever

Michael Balzer dexter at expeedo.de
Tue Aug 18 16:15:21 HKT 2020

PS: 0x30 = flow control frame. If you want to fake a host for the VCDS,
you'll need to understand ISO TP. I think you should know ISO TP also
before working on the OBD poller ;-)

The wikipedia article suffices to understand the basics:


Am 18.08.20 um 09:36 schrieb Soko:
> As far as I understand it are the red lines the polls by VCDS (as they
> are 7E5=the header of the ECU) and the green lines are the replies. I
> don't understand the red "7E5 30..." line but I reckon its just like a
> "Please give me the rest of the data".

Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26

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