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<p>Hey guys,</p>
<p>If I did nothing wrong I have bad news:</p>
<p>@Michael:<br>
With OBD port schematics I think you mean this
<a class="moz-txt-link-freetext" href="https://en.wikipedia.org/wiki/On-board_diagnostics#OBD-II_diagnostic_connector">https://en.wikipedia.org/wiki/On-board_diagnostics#OBD-II_diagnostic_connector</a><br>
Specifically if there are some other pins used than the standard
CAN pins 6 and 14.<br>
So I had the drivers door open, no key in ignition and measured
the voltages of all pins in relation to pin 5 (signal ground).
There is no voltage on any pin besides 2.5V on 6 and 14, and 12V
on 16 of course. So there are no hidden CAN buses (or any other
signals) afaict.</p>
<p>@Mark:<br>
Thanks for the hint with the can log. It's way easier than RE
Tools for just checking if there is any traffic.<br>
Having said that... there is no traffic whatsoever besides what I
am polling and the reply. Even when ignition is on I only see the
poll and the reply on the can log</p>
<p>So it seems devmarxx was right: The gateway shields everything
and there are even no other hidden signals on the OBD port.</p>
<p>I'm happy to try any other ideas you guys have. Just let me know!</p>
<p>Soko<br>
</p>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">On 31.07.2020 02:11, Mark Webb-Johnson
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:9A478EA0-DC29-4367-A25D-9407EAEB2E8F@webb-johnson.net">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
If you are just looking for traffic on the CAN bus, a simple can
log would be the easiest. Assuming you are on USB console, it is:
<div class=""><br class="">
</div>
<blockquote style="margin: 0 0 0 40px; border: none; padding:
0px;" class="">
<div class="">OVMS# log level verbose canlog-monitor</div>
<div class="">OVMS# can log start monitor crtd</div>
</blockquote>
<div class="">
<div><br class="">
</div>
<div>If you are using ssh, you need to add a:</div>
<div><br class="">
</div>
</div>
<blockquote style="margin: 0 0 0 40px; border: none; padding:
0px;" class="">
<div class="">
<div>OVMS# log monitor yes</div>
</div>
</blockquote>
<div class="">
<div><br class="">
</div>
<div>To stop the logging:</div>
<div><br class="">
</div>
</div>
<blockquote style="margin: 0 0 0 40px; border: none; padding:
0px;" class="">
<div class="">
<div>OVMS# can log stop</div>
</div>
</blockquote>
<div class="">
<div><br class="">
</div>
<div>Documentation here:</div>
<div><br class="">
</div>
</div>
<blockquote style="margin: 0 0 0 40px; border: none; padding:
0px;" class="">
<div class="">
<div><a
href="https://docs.openvehicles.com/en/latest/crtd/can_logging.html"
class="" moz-do-not-send="true">https://docs.openvehicles.com/en/latest/crtd/can_logging.html</a></div>
</div>
</blockquote>
<div class="">
<div><br class="">
</div>
<div>
<div class="">
<div>For my work, I personally prefer this arrangement:</div>
<div><br class="">
</div>
</div>
<blockquote style="margin: 0px 0px 0px 40px; border: none;
padding: 0px;" class="">
<div>OVMS# can log start tcpserver transmit gvret-b :23</div>
</blockquote>
<div class="">
<div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);"><br
class="">
</div>
</div>
<div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);">And
then I use <a href="https://www.savvycan.com/" class=""
moz-do-not-send="true">SavvyCAN</a> on a laptop to connect
over wifi and work.</div>
<div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);"><br
class="">
</div>
</div>
<div>Regarding the ‘re’ system, it is a work-in-progress, and
not currently documented. It is still kind of a mess at the
moment (particularly for multiplexed message IDs), as I
continue to work on DBC integration. That said, it is
basically functional.</div>
<div><br class="">
</div>
</div>
<div>To start it:</div>
<div><br class="">
</div>
<blockquote style="margin: 0 0 0 40px; border: none; padding:
0px;" class="">
<div class="">
<div>OVMS# re start</div>
</div>
</blockquote>
<div class="">
<div><br class="">
</div>
<div>To stop it:</div>
<div><br class="">
</div>
</div>
<blockquote style="margin: 0 0 0 40px; border: none; padding:
0px;" class="">
<div class="">
<div>OVMS# re stop</div>
</div>
</blockquote>
<div class="">
<div><br class="">
</div>
<div>To see discovered IDs:</div>
<div><br class="">
</div>
</div>
<blockquote style="margin: 0 0 0 40px; border: none; padding:
0px;" class="">
<div class="">
<div>OVMS# re list</div>
</div>
</blockquote>
<div class="">
<div><br class="">
</div>
<div>It will (by default) listen on all open CAN buses, and show
you the discovered ID, message count, interval (in ms), and
last message seen.</div>
<div><br class="">
</div>
<div>It has some rudimentary ability to monitor active polling
protocols with ‘re obdii extended <min> <max>’ (or
standard), specifying the range of IDs used by the ECUs.</div>
<div><br class="">
</div>
</div>
<div class="">
<div>Regards, Mark</div>
<div><br class="">
<blockquote type="cite" class="">
<div class="">On 30 Jul 2020, at 11:56 PM, Soko <<a
href="mailto:ovms@soko.cc" class=""
moz-do-not-send="true">ovms@soko.cc</a>> wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" class="">
<div class="">
<p class="">@devmarxx: Is there any doc/guide on how to
use this RE Tools?</p>
<p class="">@Michael: Yeah, I know. You would have done
my 1-day work in 5 mins. I know C++ but I don't know
the OVMS framework. But its like with any project: The
issue is not the language, its the framework.</p>
<p class="">Until you have yours you have to settle with
me unfortunately ;)</p>
<p class="">My cousin has a working VCDS HEX interface
and I have an y-adapter so I can listen with an ELM327
adapter to the commands VCDS is sending. Maybe I can
find any car status there. Device 09 is a good hint. <br
class="">
</p>
<p class="">But as you said: I have still have to poll
this, even if I find a status.</p>
<p class="">I can't say (of course) if there's another
CAN bus @ OBD port. All this CAN/OBD/Bus stuff is
completely new to me.. ModBus RTU/TCP, MBus etc. I
would know ;)</p>
<p class="">So if you can point me in any direction what
to try - or what you would do - I happy to dig into
it.</p>
<p class="">Soko</p>
<p class="">PS: Any idea when you'll get your Mii?<br
class="">
</p>
<div class="moz-cite-prefix">On 30.07.2020 17:14,
Michael Balzer wrote:<br class="">
</div>
<blockquote type="cite"
cite="mid:193a06ae-81aa-52a0-047e-6bde5107dbdc@expeedo.de"
class="">
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" class="">
If only I had my Mii already…<br class="">
<br class="">
If the OBD port is shielded from the CAN traffic, you
need to poll some device. ECU = Engine Control Unit =
device 01.<br class="">
<br class="">
I would suspect the basic car status info to be
available from device 09 (central electrics), but it
seems no PIDs have been RE'd from there yet. So maybe
you need to derive the info from some other
mode/status register.<br class="">
<br class="">
It's bad needing to continuosly poll to get the live
status data. Is possibly another, unfiltered CAN bus
available at the OBD port?<br class="">
<br class="">
Regards,<br class="">
Michael<br class="">
<br class="">
<br class="">
<div class="moz-cite-prefix">Am 30.07.20 um 16:43
schrieb Soko:<br class="">
</div>
<blockquote type="cite"
cite="mid:c46c65de-ae20-f2db-4c2b-052843756691@soko.cc"
class="">
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" class="">
<p class="">Ahhh OK, I've found OvmsVehicle::virtual
void TickerXXX(uint32_t ticker);<br class="">
Got it! This was exactly my issue as I didn't know
about any function which gets called regularly so
I could check something like this...<br class="">
It's not an ideal situation though: I just can
slow down the poll after my fail-counter gets too
high as I need to check when the car gets powered
again. So all I can do is polling, lets say every
60 secs when the car is off, and increase it once
its on. But there is now way around this 60-sec
polling if the only thing I can do is poll :(<br
class="">
</p>
<p class="">Afaik there is only the sharkcow's list
below, reverse engineered by him from ODBeleven.</p>
<p class="">(dev)marxx exlpained to me: There is a
gateway between the CAN-Buses and the OBD
Connector in all VW-AG vehicles which only replies
to polls and also acts as security gateway if you
want to write to the buses.</p>
<p class="">So I think I cannot really do a can log
or use re tool as the OBD interface stays quiet if
I'm not polling it...</p>
<p class="">And as there is no other vehicle from
VW,Seat,Skoda,Audi,etc. in OVMS. So I have no
cheat-sheet :(</p>
<p class="">Anyhow... I would need to poll one ECU
(is this the correct therm?) which doesn't shuts
down... or maybe the issue is the OBD-gateway
shutting down.<br class="">
</p>
<p class="">What do you think?</p>
<p class="">Soko<br class="">
</p>
<div class="moz-cite-prefix">On 30.07.2020 16:17,
Michael Balzer wrote:<br class="">
</div>
<blockquote type="cite"
cite="mid:429f9711-74bd-828c-0c9c-3872f9b0bfac@expeedo.de"
class="">
<meta http-equiv="Content-Type"
content="text/html; charset=UTF-8" class="">
Soko,<br class="">
<br class="">
nice progress :-)<br class="">
<br class="">
If you can't detect vehicle state by listening to
regular status CAN frames, you can check the time
since the last poll reply in the per second
ticker.<br class="">
<br class="">
As poll replies normally come in fast, you should
be able to detect a switch-off by a small timeout,
say 3 seconds… probably need to add a counter, as
a single poll may get lost / ignored.<br class="">
<br class="">
CAN tx errors can be caused by other issues as
well, so should generally not be interpreted that
way.<br class="">
<br class="">
But… are you sure there are no status frames on
the bus? Have you done a can log or tried the re
tool?<br class="">
<br class="">
Regards,<br class="">
Michael<br class="">
<br class="">
<br class="">
<div class="moz-cite-prefix">Am 30.07.20 um 14:43
schrieb Soko:<br class="">
</div>
<blockquote type="cite"
cite="mid:dfef03ed-b0e1-1fda-7eab-de5b6e49cc67@soko.cc"
class="">Hi guys, <br class="">
<br class="">
Want to report success on connecting and reading
my VW e-Up via OBD cable using the Poller. As
you can see in the screenshot of the log
attached I get an IncomingPollReply(..) call and
an SoC value of 33.333% <br class="">
<br class="">
Once I turn of the ignition and lock the car
though I don't get any replies no more (line D
793813) and then I get can1 errors... I'm
polling with 10 seconds intervall. <br class="">
<br class="">
I know that this is as it should be... but my
issue is: I don't have any way to know if the
ignition is on, the key is in, the car is
running, the car is charging as the PIDs are not
known for such values (afaik by the lists of
sharkcow <a class="moz-txt-link-freetext"
href="https://www.goingelectric.de/wiki/Liste-der-OBD2-Codes/"
moz-do-not-send="true">https://www.goingelectric.de/wiki/Liste-der-OBD2-Codes/</a>).
<br class="">
<br class="">
So what would be the best approach to change the
different polling states? Can I somehow get
called (in my vehicle-class) if an can-error is
thrown? Then I would increase the poll
frequency. <br class="">
<br class="">
Any suggestions? <br class="">
<br class="">
thanks <br class="">
<br class="">
Soko <br class="">
<br class="">
<br class="">
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Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
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Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
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