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Didier,<br>
<br>
great progress, congratulations! Glad I could help :-)<br>
<br>
Btw: there's a special UDS request type for a minimal documentation
on PIDs. The devices of course need to support that request, most
don't, but maybe you're lucky there on your high end vehicle. To
check, pick some PID you found, and request the same PID from the
same device with poll type 24 (ReadScalingDataByIdentifier) instead
of type 22 (ReadDataByIdentifier). If you get some response, I'll
help you with decoding it.<br>
<br>
Regarding VIN and version / device identification data, these are
often provided by multiple or all devices. Sometimes even in
slightly different form at multiple PIDs on the same device.<br>
<br>
ECU IDs may be using IDs below 700, but that's very rare for
OBD/ISO-TP devices. The ID encodes the message priority on the bus,
the higher the ID, the lower the priority. IDs below 700 are
normally reserved for high priority frames like process data
broadcasted regularly by devices (i.e. not needing to be requested).
CANopen uses IDs in the range 5xx - 6xx for their flavor of PIDs
(SDOs), and reserves IDs below 500 for process data, emergency and
synchronisation messages.<br>
<br>
You may also have devices using CAN extended frames, or ISO-TP
extended addressing, or special protocols other than CANopen &
OBD/ISO-TP. We recently added support for ISO-TP extended
addressing, but not yet for the RE OBD tools. I just recently
learned from the e-Up team, that VW vehicles use a proprietary
protocol by VW to transport KWP2000 via CAN, named "TP2.0" (but
having nothing in common with ISO-TP). Oh yes, and of course there
may still be devices that simply don't speak CAN, but need a real
K-Line to access.<br>
<br>
But chances are you'll find what you need using standard OBD/ISO-TP
requests, as you already have found thousands of PIDs that way.<br>
<br>
Regards,<br>
Michael<br>
<br>
<br>
<div class="moz-cite-prefix">Am 17.01.21 um 19:16 schrieb
<a class="moz-txt-link-abbreviated" href="mailto:didier@ernotte.com">didier@ernotte.com</a>:<br>
</div>
<blockquote type="cite"
cite="mid:1626086739.370432.1610907409752@mail.yahoo.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div class="ydpe05aa320yahoo-style-wrap"
style="font-family:Helvetica Neue, Helvetica, Arial,
sans-serif;font-size:16px;">
<div dir="ltr" data-setdir="false">Hi <span>Michael,</span></div>
<div dir="ltr" data-setdir="false"><span><br>
</span></div>
<div dir="ltr" data-setdir="false"><span>Thanks for the info.</span></div>
<div dir="ltr" data-setdir="false"><span><br>
</span></div>
<div dir="ltr" data-setdir="false"><span>SavvyCan was helpful to
discover ECU rx/tx ID, and your recent front-end on RE obdii
scan is very helpful to discover PID for a specific ECU. I
have now thousands of PID and data to decode.<br>
</span></div>
<div dir="ltr" data-setdir="false"><span>I found that most of
the ECU have a PID for the VIN Number of the car. Is that
standard on all car ?</span></div>
<div dir="ltr" data-setdir="false"><span>Are all ECU ID in the
700-7FF range , or it could be outside this range ?</span><br>
</div>
<div><br>
</div>
<div dir="ltr" data-setdir="false">Didier<br>
</div>
</div>
<div id="yahoo_quoted_1628806586" class="yahoo_quoted">
<div style="font-family:'Helvetica Neue', Helvetica, Arial,
sans-serif;font-size:13px;color:#26282a;">
<div> Le mardi 5 janvier 2021 16 h 00 min 05 s UTC−5, Michael
Balzer <a class="moz-txt-link-rfc2396E" href="mailto:dexter@expeedo.de"><dexter@expeedo.de></a> a écrit : </div>
<div><br>
</div>
<div><br>
</div>
<div>
<div id="yiv9021686134">
<div> Didier,<br clear="none">
<br clear="none">
<div class="yiv9021686134moz-cite-prefix">Am 05.01.21 um
21:04 schrieb <a rel="nofollow noopener noreferrer"
shape="rect"
class="yiv9021686134moz-txt-link-abbreviated"
ymailto="mailto:didier@ernotte.com" target="_blank"
href="mailto:didier@ernotte.com"
moz-do-not-send="true">didier@ernotte.com</a>:<br
clear="none">
</div>
<blockquote type="cite"> </blockquote>
</div>
<div>
<div class="yiv9021686134ydp76942f67yahoo-style-wrap"
style="font-family:Helvetica Neue, Helvetica, Arial,
sans-serif;font-size:16px;">
<div dir="ltr">Hi,</div>
<div dir="ltr"><br clear="none">
</div>
<div dir="ltr">I have found a lot of info like this in
the tech doc I have</div>
<div dir="ltr"><br clear="none">
</div>
<div dir="ltr">"
<div>Using the Jaguar Land Rover approved diagnostic
equipment, check datalogger signal – Vehicle Speed
(0xDD09) Ensure that vehicle speed is transmitted
and updated correctly. Clear the DTCs and retest.
If fault persist using the Jaguar Land Rover
Approved Diagnostic Equipment, reconfigure the
door module with the latest level software. Clear
the DTCs and retest <br clear="none">
<br clear="none">
</div>
<div>"</div>
<div><br clear="none">
</div>
<div dir="ltr">What do you think I can do with the
info "0xDD09" ? a PID ?<br clear="none">
</div>
</div>
</div>
<br clear="none">
Presumably. Try it. As it's a 16 bit PID, you'll
probably need poll type 22, so that would be:<br
clear="none">
<br clear="none">
<font face="monospace">obdii can1 request broadcast
22dd09</font><br clear="none">
<br clear="none">
<br clear="none">
<blockquote type="cite">
<div class="yiv9021686134ydp76942f67yahoo-style-wrap"
style="font-family:Helvetica Neue, Helvetica, Arial,
sans-serif;font-size:16px;">
<div
class="yiv9021686134ydp9a264b55yahoo-style-wrap"
style="font-family:Helvetica Neue, Helvetica,
Arial, sans-serif;font-size:16px;">
<div dir="ltr">The communications networks
available on the vehicle are shown below: <br
clear="none">
<div>- High Speed (HS) CAN chassis systems bus
</div>
<div>- HS CAN body systems bus
</div>
<div>- HS CAN Human Machine Interface (HMI)
systems bus <br clear="none">
</div>
<div>- HS CAN power mode zero systems bus
</div>
<div>- Flexray
</div>
<div>- Local Interconnect Network (LIN)
</div>
<div>- Private bus </div>
</div>
</div>
</div>
</blockquote>
<br clear="none">
That's a log of networks. You probably won't be able to
access all of them at the ODB port.<br clear="none">
<br clear="none">
<blockquote type="cite">
<div class="yiv9021686134ydp76942f67yahoo-style-wrap"
style="font-family:Helvetica Neue, Helvetica, Arial,
sans-serif;font-size:16px;">
<div
class="yiv9021686134ydp9a264b55yahoo-style-wrap"
style="font-family:Helvetica Neue, Helvetica,
Arial, sans-serif;font-size:16px;">- the copen
scan does not do anything</div>
</div>
</blockquote>
<br clear="none">
If it doesn't _do_ anything, you didn't do it right. If
it doesn't _find_ anything, you don't have CANopen
nodes, so can concentrate on OBD/UDS.<br clear="none">
<br clear="none">
<blockquote type="cite">
<div class="yiv9021686134ydp76942f67yahoo-style-wrap"
style="font-family:Helvetica Neue, Helvetica, Arial,
sans-serif;font-size:16px;">
<div
class="yiv9021686134ydp9a264b55yahoo-style-wrap"
style="font-family:Helvetica Neue, Helvetica,
Arial, sans-serif;font-size:16px;">
<div dir="ltr">- the "<span><font
style="background-color:inherit;"
face="monospace">obdii can1 request
broadcast 0100</font></span>", (and 0120,
0140, 0160, 0180...) returned a 32 bits that I
can decode to identify which PID is supported,
but only one ECU (7df) answered to the
broadcast. I guess there is many other, but they
don't respond to the broadcast. <br
clear="none">
</div>
</div>
</div>
</blockquote>
<br clear="none">
7DF isn't an ECU, it's the broadcast address. You
currently need to enable the CAN logger to see the
origin address. It's normal only one device responds to
broadcasts. You need to find the other devices by
scanning for them.<br clear="none">
<br clear="none">
<blockquote type="cite">
<div class="yiv9021686134ydp76942f67yahoo-style-wrap"
style="font-family:Helvetica Neue, Helvetica, Arial,
sans-serif;font-size:16px;">
<div
class="yiv9021686134ydp9a264b55yahoo-style-wrap"
style="font-family:Helvetica Neue, Helvetica,
Arial, sans-serif;font-size:16px;">
<div dir="ltr">I don't understand why the "<span><font
style="background-color:inherit;"
face="monospace">re obdii scan start 1 7df 0
20</font></span>" does not give me an anser
for the identifyed PID of the previous
"broadcast" command .</div>
</div>
</div>
</blockquote>
<br clear="none">
Because you need to specify the RX ID range you're
expecting, the PID scanner doesn't set that
automatically. In this case, you'd do:<br clear="none">
<br clear="none">
<span><font style="background-color:inherit;"
face="monospace">re obdii scan start 1 7df 0 20
-r7e8-7ef</font></span><br clear="none">
<br clear="none">
…or…<br clear="none">
<br clear="none">
<span><font style="background-color:inherit;"
face="monospace">re obdii scan start 1 7df 0 20
-r600-7ff</font></span><br clear="none">
<br clear="none">
…to check for responses outside the standard.<br
clear="none">
<br clear="none">
<blockquote type="cite">
<div class="yiv9021686134ydp76942f67yahoo-style-wrap"
style="font-family:Helvetica Neue, Helvetica, Arial,
sans-serif;font-size:16px;">
<div
class="yiv9021686134ydp9a264b55yahoo-style-wrap"
style="font-family:Helvetica Neue, Helvetica,
Arial, sans-serif;font-size:16px;">
<div dir="ltr">In the broadcast command, when we
send "0100", the first byte seems to be a
"mode", and the second the PID, is it correct ?
(as described in the vehicle.h).</div>
<div dir="ltr">I still don't see how I can have a
full list of ECU ID, and a full list of PID for
each ECU. Maybe that is why retro engineering is
complex, <br clear="none">
</div>
</div>
</div>
</blockquote>
<br clear="none">
That is correct, and you get a full list by scanning.<br
clear="none">
<br clear="none">
<blockquote type="cite">
<div class="yiv9021686134ydp76942f67yahoo-style-wrap"
style="font-family:Helvetica Neue, Helvetica, Arial,
sans-serif;font-size:16px;">
<div
class="yiv9021686134ydp9a264b55yahoo-style-wrap"
style="font-family:Helvetica Neue, Helvetica,
Arial, sans-serif;font-size:16px;">
<div dir="ltr">I don't also understand the impact
of selecting a vehicle in the web session. Since
my Jaguar is not supported yet, I select the
OBDII car , but if I select the nissan leaf, I
can see more data, which does not make sense,
unless we ned to "wake up" some ECU in order to
pull some info. Is the OVMS device masking some
data in the bus? how can I see everything on the
bus ?</div>
</div>
</div>
</blockquote>
<br clear="none">
Selecting a vehicle activates the special CAN & OBD
handling that is implemented for that vehicle already.
Since your car isn't supported, you should select the
empty vehicle (code NONE). The OBD vehicle polls some
standard PIDs, which can interfere with RE scans.<br
clear="none">
<br clear="none">
You can see everything on the bus with the CAN logging
& monitoring & streaming commands. See the
documentation links I gave you in my first post.<br
clear="none">
<br clear="none">
Regards,<br clear="none">
Michael<br clear="none">
<br clear="none">
<br clear="none">
<blockquote type="cite">
<div class="yiv9021686134ydp76942f67yahoo-style-wrap"
style="font-family:Helvetica Neue, Helvetica, Arial,
sans-serif;font-size:16px;">
<div
class="yiv9021686134ydp9a264b55yahoo-style-wrap"
style="font-family:Helvetica Neue, Helvetica,
Arial, sans-serif;font-size:16px;">
<div dir="ltr">Thanks for your help.</div>
<div dir="ltr">I will definitively take a look at
your new page.<br clear="none">
</div>
<div dir="ltr"><br clear="none">
</div>
<div dir="ltr">Didier<br clear="none">
</div>
<div dir="ltr"><br clear="none">
</div>
<div><br clear="none">
</div>
</div>
</div>
<div class="yiv9021686134yahoo_quoted"
id="yiv9021686134yahoo_quoted_0716136144">
<div style="font-family:'Helvetica Neue', Helvetica,
Arial, sans-serif;font-size:13px;color:#26282a;">
<div>
<div id="yiv9021686134">
<div>
<div class="yiv9021686134yahoo_quoted"
id="yiv9021686134yahoo_quoted_0062361247">
<div style="font-family:'Helvetica Neue',
Helvetica, Arial,
sans-serif;font-size:13px;color:#26282a;">
<div> Le lundi 4 janvier 2021 15 h 28
min 10 s UTC−5, Michael Balzer <a
rel="nofollow noopener noreferrer"
shape="rect"
class="yiv9021686134moz-txt-link-rfc2396E"
ymailto="mailto:dexter@expeedo.de"
target="_blank"
href="mailto:dexter@expeedo.de"
moz-do-not-send="true"><dexter@expeedo.de></a>
a écrit : </div>
<div><br clear="none">
</div>
<div><br clear="none">
</div>
<div>
<div
class="yiv9021686134yqt6710073448"
id="yiv9021686134yqt03840">
<div dir="ltr">Didier,<br
clear="none">
<br clear="none">
Am 31.12.20 um 10:47 schrieb
Michael Balzer:<br clear="none">
> Most OBD2 devices won't
respond to broadcasts though. To
identify <br clear="none">
> them, you need to send a test
request to all CAN IDs in your
assumed <br clear="none">
> ID range. The scan tools for
this are below "re obdii scan":<br
clear="none">
<br clear="none">
I've just added a first UI for
that scanner: <br clear="none">
<a rel="nofollow noopener
noreferrer" shape="rect"
target="_blank"
href="https://docs.openvehicles.com/en/latest/plugin/repidscan/README.html"
moz-do-not-send="true">https://docs.openvehicles.com/en/latest/plugin/repidscan/README.html</a><br
clear="none">
<br clear="none">
Feedback is welcome.
<div
class="yiv9021686134yqt4211668254"
id="yiv9021686134yqtfd69813"><br
clear="none">
<br clear="none">
Regards,<br clear="none">
Michael<br clear="none">
<br clear="none">
-- <br clear="none">
Michael Balzer * Helkenberger
Weg 9 * D-58256 Ennepetal<br
clear="none">
Fon 02333 / 833 5735 * Handy
0176 / 206 989 26<br
clear="none">
<br clear="none">
</div>
</div>
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<pre class="yiv9021686134moz-signature">--
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26</pre>
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