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<body>OK, thanks heaps. Just to clarify: So if I know my session code I replace your 0xC0 with it, correct?<br>Is this session code global for all ECUs and static? The wiki link for UDS speaks about different sessions...<br>Does this one source code line also take care about the "tester present" message?<br><br>Your pacience with me is highly appreciated :)<br>Soko<br><br><div class="gmail_quote">On 8 August 2020 19:47:45 CEST, Michael Balzer <dexter@expeedo.de> wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
Soko,<br>
<br>
<a href="https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3/blob/master/vehicle/OVMS.V3/components/vehicle_renaulttwizy/src/rt_obd2.cpp#L64">https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3/blob/master/vehicle/OVMS.V3/components/vehicle_renaulttwizy/src/rt_obd2.cpp#L64</a><br>
<br>
as simple as that. But you need to know the session code you need to
use for the gateway. 0xC0 is in the manufacturer specific range.<br>
<br>
I would test the gateway behaviour using manual CAN commands, a
script or a web plugin. That way you're much more flexible.<br>
<br>
Regards,<br>
Michael<br>
<br>
<br>
<div class="moz-cite-prefix">Am 08.08.20 um 19:09 schrieb Soko:<br>
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Hmmm... ok lets forget the 2nd log and talk about the first one. <br>
It must somehow be related to OVMS though as the replies get in
immediately I swap the poll states. If I change the threshold from
5 secs to 3 or to 6 its always the same: once the poll state swaps
the replies come in. So it must be related to the poll stat
switch. The canlog shows all polls look the same... so the gateway
must get confused every time exactly when the threshold*4 is over?<br>
Hmmm... or maybe the gateway gets confused after a certain number
of polls. So the threshold doesnt matter. <br>
When I change the factor 4 to i.e. 6 I could validate this
hypothesis. <br>
<br>
Havent had time for session implementation yet. <br>
Is there a OVMS framework for a tester session? Or at least a
vehicle implementation which does it?<br>
<br>
<div class="gmail_quote">On 8 August 2020 16:58:25 CEST, Michael
Balzer <a class="moz-txt-link-rfc2396E" href="mailto:dexter@expeedo.de"><dexter@expeedo.de></a> wrote:
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt
0.8ex; border-left: 1px solid rgb(204, 204, 204);
padding-left: 1ex;"> Soko,<br>
<br>
lines 33 and 34 of your second log are due to the CAN TX
buffer, which seems to have held back the frame until the bus
became available.<br>
<br>
Besides that, I don't see an RX in that log after switching
the polling state. So I assume the RX in your first log also
isn't related to the poll state switch.<br>
<br>
There is an RX buffer, but that's just the internal queue of
the vehicle CAN listener task. There is no delay on the
processing unless you block the task somehow, for example by
doing long term loops / communication in that context (which
you shouldn't do).<br>
<br>
You still don't send a session login or tester presence, so
maybe the gateway is simply confused by the requests, runs
into some timeout, then restarts… something like that.<br>
<br>
Regards,<br>
Michael<br>
<br>
<br>
<div class="moz-cite-prefix">Am 08.08.20 um 13:20 schrieb
Soko:<br>
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<p>Soooo....</p>
<p>I've finally found time to test this again.</p>
<p>Basically the same behaviour as described below.</p>
<p><b>VWUP_OFF_TICKER_THRESHOLD 5 with 4 trys.log</b><br>
Car was locked initially. Unlocked the car before line 21
(around time mark 60.000). Locked around time mark 80.000.
Car stayed responsive until line 108 (time mark 100.000).<br>
At line 130 (tm=116.814) I swap back to PollState=0. The
poll for PollState=0 gets an immediate reply (line
131-133) and therefore I swap back to PollState=1.<br>
The weird thing is that line 132 (which got a reply) is
exactly the same as 126 (or 118 or 110) which didn't get a
reply!?!? So the car has no idea of the poll states as the
data is the same? There must be some issue/bug/behavior
inside OVMS (maybe even in the hardware buffer) which gets
triggered by a PollState change. Or the canlog-monitor
uses somehow a cache and doesn't show the messages
immediately.</p>
<p><b>VWUP_OFF_TICKER_THRESHOLD 10 with 4 trys.log</b><br>
Same as below. One thing I've noticed though: Car was
locked until line 32 (tm=63.814). Then I've unlocked it
and the lines 33 and 34 showed up immediately. This
indicates a buffer/cache/etc. issue with the
canlog-monitor as well (imho).<br>
</p>
<p>Soko<br>
</p>
<div class="moz-cite-prefix">On 03.08.2020 13:10, Michael
Balzer wrote:<br>
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Soko,<br>
<br>
I don't see any obvious mistakes on a first check.<br>
<br>
Please do the tests again with CAN monitoring, so we can
see what's actually going on on the bus.<br>
<br>
An OBD device normally logs into the device sending a UDS
diag session command (0x10), then keeps that session alive
by sending tester present (0x3E) evers 30-60 seconds. See
the UDS documentation I sent you, or for an overview, see
<a href="https://de.wikipedia.org/wiki/Unified_Diagnostic_Services" moz-do-not-send="true">https://de.wikipedia.org/wiki/Unified_Diagnostic_Services</a><br>
<br>
You should be able to get the session type and protocol by
logging what your VCDS does on the bus.<br>
<br>
Regards,<br>
Michael<br>
<br>
<br>
<div class="moz-cite-prefix">Am 03.08.20 um 06:19 schrieb
Soko:<br>
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<p>Mornin,</p>
<p>Source is here: <a class="moz-txt-link-freetext" href="https://github.com/devmarxx/Open-Vehicle-Monitoring-System-3/tree/master/vehicle/OVMS.V3/components/vehicle_vweup/src" moz-do-not-send="true">https://github.com/devmarxx/Open-Vehicle-Monitoring-System-3/tree/master/vehicle/OVMS.V3/components/vehicle_vweup/src</a></p>
<p>Attached are two logs. I haven't had the can-monitor
active unfortuantely..</p>
<p><b>VWUP_OFF_TICKER_THRESHOLD 5 with 4 trys.log</b><br>
As the name says it polls every 5 seconds in
PollState=1 and swaps back to PollState=0 after 5*4=20
seconds.<br>
Until line 35 you see the CAN errors as the vehicle is
OFF. Then I unlocked the car and in line 38 I get the
first reply.<br>
Around line 90 I locked the car again. It polls, but
gets no reply, <u>but not error either</u> (?!).<br>
Line 118 sets the PollState=0 and suddenly a response
comes in. So in Line 123 I set the PollState=1 again.<br>
The the game starts again: Polls get send, no reply
but no error either. After 21 CarOffTickers I switch
to PollState=0 and suddenly a reply comes in...</p>
<p><b>VWUP_OFF_TICKER_THRESHOLD 10 with 4 trys.log<br>
</b>Here I unlocked at line 57 and locked around line
100. After that polls get send, no reply, <u>but
errors happen</u>. And the car is finally off.<br>
Although I've tried the same thing later that day and
the car didn't even go to sleep with Threshold=30!?!?
So the behavior is not 100% reproducible (yet)...<br>
</p>
<p>@gateway throttling: In VCDS (which - hopefully -
does only polling too) I have a little number showing
me the refresh rates of the values. It indicates ~8
refreshes per second. So with 1 second shouldn't be
any throttling.</p>
<p>@OBD "tester": I have no clue what this is ;) So if
the polling framework doesn't do it, I don't do it.
All I do is in the obd_eup.* files.</p>
<p>Soko<br>
</p>
<div class="moz-cite-prefix">On 02.08.2020 20:12,
Michael Balzer wrote:<br>
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Soko,<br>
<br>
polling may keep the car awake, that's also an issue
on the Kia e-Niro IIRC.<br>
<br>
Changing the PollState can only affect the car
indirectly via the changed polls. Maybe you could add
your code & a log?<br>
<br>
Regarding the poll replies stopping, is that also
reflected in a CAN log? Maybe the OBD gateway
throttles if it sees too many requests? (Hopefully
not…)<br>
<br>
If the gateway does throttling: do you login to the
OBD as a "tester" and keep the session active by
periodically sending the "tester present" frame?<br>
<br>
Regards,<br>
Michael<br>
<br>
<br>
<div class="moz-cite-prefix">Am 02.08.20 um 19:30
schrieb Soko:<br>
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<p>Heya again,</p>
<p>I'm trying to develop a detection for when the
car is off/locked but I'm encountering a weird
phenomena:</p>
<ul>
<li>Car is shut down and locked</li>
<li>OVMS connected</li>
<li>CAN poll for voltage (only one poll value
active) with 30 secs fails with error (so far
nothing weird)</li>
<li>Unlock the car via car-key remote</li>
<li>Poll succeeds and I'm switching from
PollState=0 to PollState=1 where I poll every 2
secs</li>
<li>Lock the car via car-key remote</li>
<li><u>After 1 hour the polls still work and the
car is active</u></li>
</ul>
<p>Is something like this known from other vehicles?
So basically my car never shuts down :(</p>
<p>Another secondary weird thing:<br>
When increasing the time to 5 secs for PollState=1
the polls get no reply and after 20 secs I swap
back to PollState=0.<br>
BUT the second the PollState changes the car
replies again...<br>
Even more weirdness: When PollState=1 time is 10
secs and I swap back to Pollstate=0 after 40 secs
the same thing happens! Immediately I swap to
PollState=0 the car replies again.<br>
As if the PollState switching somehow wakes the
car up??!</p>
<p>Any ideas?</p>
<p>Soko<br>
</p>
<br>
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