<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
Steve,<br>
<br>
sorry, totally missed that. That's very unusual, haven't seen that
before. I first thought maybe that's using CAN extended frame mode,
but that's a totally different thing: it seems the i3 uses the <b>ISO-TP
extended addressing scheme</b>.<br>
<br>
Quoting from Wikipedia: <a class="moz-txt-link-freetext" href="https://en.wikipedia.org/wiki/ISO_15765-2">https://en.wikipedia.org/wiki/ISO_15765-2</a><br>
<br>
<blockquote type="cite"><span style="color: rgb(32, 33, 34);
font-family: sans-serif; font-size: 14px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: 400; letter-spacing: normal; orphans: 2;
text-align: start; text-indent: 0px; text-transform: none;
white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255); text-decoration-thickness: initial; text-decoration-style:
initial; text-decoration-color: initial; display: inline
!important; float: none;">ISO-TP can be operated with its own
addressing as so-called<span> </span></span><i style="color:
rgb(32, 33, 34); font-family: sans-serif; font-size: 14px;
font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: 400; letter-spacing: normal; orphans: 2;
text-align: start; text-indent: 0px; text-transform: none;
white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255); text-decoration-thickness: initial; text-decoration-style:
initial; text-decoration-color: initial;">Extended Addressing</i><span
style="color: rgb(32, 33, 34); font-family: sans-serif;
font-size: 14px; font-style: normal; font-variant-ligatures:
normal; font-variant-caps: normal; font-weight: 400;
letter-spacing: normal; orphans: 2; text-align: start;
text-indent: 0px; text-transform: none; white-space: normal;
widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255); text-decoration-thickness:
initial; text-decoration-style: initial; text-decoration-color:
initial; display: inline !important; float: none;"><span> </span>or
without address using only the CAN ID (so-called<span> </span></span><i
style="color: rgb(32, 33, 34); font-family: sans-serif;
font-size: 14px; font-variant-ligatures: normal;
font-variant-caps: normal; font-weight: 400; letter-spacing:
normal; orphans: 2; text-align: start; text-indent: 0px;
text-transform: none; white-space: normal; widows: 2;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255); text-decoration-thickness:
initial; text-decoration-style: initial; text-decoration-color:
initial;">Normal Addressing</i><span style="color: rgb(32, 33,
34); font-family: sans-serif; font-size: 14px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps:
normal; font-weight: 400; letter-spacing: normal; orphans: 2;
text-align: start; text-indent: 0px; text-transform: none;
white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255); text-decoration-thickness: initial; text-decoration-style:
initial; text-decoration-color: initial; display: inline
!important; float: none;">). Extended addressing uses the first
data byte of each frame as an additional element of the address,
reducing the application payload by one byte.</span></blockquote>
<br>
So it's standard frames, with just an additional byte inserted
before the protocol, used to extend the CAN ID.<br>
<br>
The OVMS poller doesn't support this yet.<br>
<br>
But it shouldn't be hard to add support for this, as it basically
just fills the first frame byte from the lower 8 bits of the TX and
RX IDs, reduces the payload size by one byte and shifts the offsets
by one. PollerSend() and PollerReceive() need to be extended for
this, and poll_pid_t needs to be extended by an addressing scheme
tag.<br>
<br>
I'll have a look. Tell me if you'd like to take care of this.<br>
<br>
Regards,<br>
Michael<br>
<br>
<br>
<div class="moz-cite-prefix">Am 13.12.20 um 09:58 schrieb Steve
Davies:<br>
</div>
<blockquote type="cite"
cite="mid:CABFTEGVjBDRdi2bt=5naGFiue=bR+afLgu_Sj2y+1QMRN6mzpA@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr"><img
src="https://api2.activeinboxhq.com/1.0/anon/rr/30b419480d275d90878a2c12836ea56b"
style="display:none !important" moz-do-not-send="true"
width="1" height="1"><img
src="https://api2.activeinboxhq.com/1.0/anon/rr/30b419480d275d90878a2c12836ea56b"
style="display:none !important" moz-do-not-send="true"
width="1" height="1"><img
src="https://api2.activeinboxhq.com/1.0/anon/rr/30b419480d275d90878a2c12836ea56b"
style="display:none !important" moz-do-not-send="true"
width="1" height="1"><img
src="https://api2.activeinboxhq.com/1.0/anon/rr/30b419480d275d90878a2c12836ea56b"
style="display:none !important" moz-do-not-send="true"
width="1" height="1"><img
src="https://api2.activeinboxhq.com/1.0/anon/rr/30b419480d275d90878a2c12836ea56b"
style="display:none !important" moz-do-not-send="true"
width="1" height="1">
<div dir="ltr"><br>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Sat, 12 Dec 2020 at
17:28, Michael Balzer <<a href="mailto:dexter@expeedo.de"
moz-do-not-send="true">dexter@expeedo.de</a>> wrote:<br>
</div>
<div> </div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div>with log level verbose for canlog, you can simply
activate CAN logging via:<br>
<br>
<font face="monospace">can log start monitor crtd</font><br>
<br>
…that will log all frames, if that's too much, add a
filter like this:<br>
<br>
<font face="monospace">can log start monitor crtd 600-7ff</font></div>
</blockquote>
<div><br>
</div>
<div><br>
</div>
<div>To see what was happening I had to "log level verbose
canlog-monitor"</div>
<div><br>
</div>
<div>I see this being transmitted:</div>
<div><br>
</div>
<div>V (62436161) canlog-monitor: 1607847148.142477 1T11 6F1
03 22 dd bc 00 00 00 00<br>
</div>
<div><br>
</div>
<div>There is no reply.</div>
<div><br>
</div>
<div>The other app I looked at does this on the LM327 as setup
before sending the request:</div>
<div><br>
</div>
<div><font face="monospace">2020-11-15 10:34:35.115 -->
ATCEA07⏎ "extended address" 0x07<br>
2020-11-15 10:34:35.127 <-- OK⏎⏎><br>
</font></div>
<div><br>
</div>
<div>Looking at the LM327 data sheet this configures an
"extended address" which is sent after the 0x6F1 </div>
<div><br>
</div>
<div>I'm not sure if that 0x03 in what OVMS is sending is that
byte, and I need to somehow replace it wih 07, or if I have
to get another inserted?</div>
<div><br>
</div>
<div>Perhaps this is old hat to those more experienced than
me.</div>
<div><br>
</div>
<div>From the data sheet and the trace it seems I'm also
responsible to customise the flow control messages :-</div>
<div><br>
</div>
<div><br>
</div>
<div><font face="monospace">2020-11-15 10:34:35.129 -->
ATFCSH6F1⏎ Flow control header<br>
2020-11-15 10:34:35.141 <-- OK⏎⏎><br>
2020-11-15 10:34:35.143 --> ATFCSD07300800⏎ Flow
control data<br>
2020-11-15 10:34:35.156 <-- OK⏎⏎><br>
2020-11-15 10:34:35.157 --> ATFCSM1⏎ Flow control mode<br>
2020-11-15 10:34:35.170 <-- OK⏎⏎><br>
</font></div>
<div><br>
</div>
<div>I think that comes down to a flow control being "06 F1 07
30 08 00"</div>
<div><br>
</div>
<div>Here's the page in the LM327 to help understand what it
does:</div>
<div><br>
</div>
<div><img src="cid:part7.1DFAAA84.3B7BE093@expeedo.de"
alt="image.png" style="margin-right: 25px;" class=""><br>
</div>
</div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<pre class="moz-quote-pre" wrap="">_______________________________________________
OvmsDev mailing list
<a class="moz-txt-link-abbreviated" href="mailto:OvmsDev@lists.openvehicles.com">OvmsDev@lists.openvehicles.com</a>
<a class="moz-txt-link-freetext" href="http://lists.openvehicles.com/mailman/listinfo/ovmsdev">http://lists.openvehicles.com/mailman/listinfo/ovmsdev</a>
</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26</pre>
</body>
</html>