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Mark,<br>
<br>
the handler is meant to read both buffers sequentially, and on a
quick glance I don't see why it wouldn't. But it can't hurt if you
do an audit of the code.<br>
<br>
I remember having had that out-of-order discussion when handling
both RX buffers before here, but don't remember the outcome. Too bad
the list archives cannot be searched.<br>
<br>
I think it was the MCP not doing overflows from RX buffer 1 to 0.
I.e. if buffer 1 still has a frame on arrival, the new frame will be
lost. That means losing a frame if the handler cannot react fast
enough, but receiving out of order would be worse.<br>
<br>
Regards,<br>
Michael<br>
<br>
<br>
<div class="moz-cite-prefix">Am 04.06.21 um 04:16 schrieb Mark
Webb-Johnson:<br>
</div>
<blockquote type="cite"
cite="mid:D8550468-CA1D-4552-93D6-CAB4DC5B364F@webb-johnson.net">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
Michael,
<div class=""><br class="">
</div>
<div class="">Good suggestion on the timing. I think it best to
use the same timings as the Arduino library, and have committed
that change. No vehicle modules currently use 1Mbps on MCP2515
anyway. Unfortunately, it didn’t resolve my problem.</div>
<div class=""><br class="">
</div>
<div class="">Looking at the error flags I see:</div>
<div class=""><br class="">
</div>
<blockquote style="margin: 0 0 0 40px; border: none; padding:
0px;" class="">
<div class="">
<div class=""><font class="" face="Andale Mono"><span
style="font-style: normal; font-size: 12px;" class="">Error
flag: 0x23401c01</span></font></div>
<div class=""><font class="" face="Andale Mono"><span
style="font-style: normal; font-size: 12px;" class=""><br
class="">
</span></font></div>
<div class=""><font class="" face="Andale Mono"><span
style="font-style: normal; font-size: 12px;" class="">intstat
0x23</span></font></div>
<div class=""><font class="" face="Andale Mono"><span
style="font-style: normal; font-size: 12px;" class="">
ERRIF Error Interrupt pending</span></font></div>
<div class=""><font class="" face="Andale Mono"><span
style="font-style: normal; font-size: 12px;" class="">
RX0IF Rx buffer 0 full interrupt</span></font></div>
<div class=""><font class="" face="Andale Mono"><span
style="font-style: normal; font-size: 12px;" class="">
RX1IF Rx buffer 1 full interrupt</span></font></div>
<div class=""><font class="" face="Andale Mono"><span
style="font-style: normal; font-size: 12px;" class=""><br
class="">
</span></font></div>
<div class=""><font class="" face="Andale Mono"><span
style="font-style: normal; font-size: 12px;" class="">errflag
0x40</span></font></div>
<div class=""><font class="" face="Andale Mono"><span
style="font-style: normal; font-size: 12px;" class="">
RX0OVR Rx buffer 0 overflow</span></font></div>
<div class=""><font class="" face="Andale Mono"><span
style="font-style: normal; font-size: 12px;" class=""><br
class="">
</span></font></div>
<div class=""><font class="" face="Andale Mono"><span
style="font-style: normal; font-size: 12px;" class="">intflag
0x1c01</span></font></div>
<div class=""><font class="" face="Andale Mono"><span
style="font-style: normal; font-size: 12px;" class="">
0x01 Implied from Rx buffer 0 full</span></font></div>
<div class=""><font class="" face="Andale Mono"><span
style="font-style: normal; font-size: 12px;" class=""><br
class="">
</span></font></div>
<div class=""><font class="" face="Andale Mono"><span
style="font-style: normal; font-size: 12px;" class="">
0x1c = 0001 1100</span></font></div>
<div class=""><font class="" face="Andale Mono"><span
style="font-style: normal; font-size: 12px;" class="">
Means RXB0 overflow. No data lost in
this case (it
went into RXB1)</span></font></div>
<div class=""><font class="" face="Andale Mono"><span
style="font-style: normal; font-size: 12px;" class="">
Means (errflag & EFLG_RX01OVR), clear RX
buffer overflow flags</span></font></div>
<div class=""><font class="" face="Andale Mono"><span
style="font-style: normal; font-size: 12px;" class="">
Means (intstat & (CANINTF_MERRF |
CANINTF_WAKIF | CANINTF_ERRIF)), clear error &
wakeup interrupts</span></font></div>
</div>
</blockquote>
<div class=""><br class="">
</div>
<div class="">So we have CAN frames in BOTH rx buffers #0 and #1.
Looking at our driver code
(mcp2515::AsynchronousInterruptHandler), it seems in that case
we only read from buffer #0. From the flow I can see, we are
going to lose that second frame. We’re not really handling the
issue of two frames being in the buffers when the interrupt
handler is called.</div>
<div class=""><br class="">
</div>
<div class="">As the architecture of <span style="caret-color:
rgb(0, 0, 0); color: rgb(0, 0, 0);" class="">mcp2515::AsynchronousInterruptHandler
can only receive one frame, it is not so simple to fix. We
could simply read and return the frame in buffer #0,
requesting to be called again (return true), but another frame
may arrive (into buffer #0) before we get called again, and
that is going to result in out-of-order frames.</span></div>
<div class=""><span style="caret-color: rgb(0, 0, 0); color:
rgb(0, 0, 0);" class=""><br class="">
</span></div>
<div class="">I’ll work on improving the handling of this
case.</div>
<div class=""><br class="">
</div>
<div class="">Regards, Mark.</div>
<div class="">
<div><br class="">
<blockquote type="cite" class="">
<div class="">On 3 Jun 2021, at 3:07 PM, Michael Balzer <<a
href="mailto:dexter@expeedo.de" class=""
moz-do-not-send="true">dexter@expeedo.de</a>> wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<div class="content-isolator__container">
<div class="protected-part">
<div class="protected-title">Signed PGP part</div>
<div class="protected-content">
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" class="">
<div class=""> Mark,<br class="">
<br class="">
I'd give the bit timing a try first, the MCP2515
seems to be very sensitive for this. I've even had
some trouble finding a working configuration for
the 50 kbit timing I've added a couple weeks ago.<br
class="">
<br class="">
We currently use 00 / D0 / 82 which is also the
result of the old Intrepid timing calculator.
That's a propagation segment of 1 Tq and 3 Tq per
phase, resulting in samling between 50% - 62.5%.<br
class="">
<br class="">
The Arduino MCP CAN lib by Cory Fowler also had
this previously, but then changed in…<br class="">
<br class="">
<a class="moz-txt-link-freetext"
href="https://github.com/coryjfowler/MCP_CAN_lib/commit/ece730cf697fef1cbe8a90111694868168d41000"
moz-do-not-send="true">https://github.com/coryjfowler/MCP_CAN_lib/commit/ece730cf697fef1cbe8a90111694868168d41000</a><br
class="">
<br class="">
…to 00 / CA / 81, which is a propagation segment
of 3 Tq and 2 Tq per phase, shifting the sampling
window to 62.5 - 75%.<br class="">
<br class="">
Our current configuration scheme for the internal
SJA1000 compatible CAN seems to sample at 62.5 -
75% as well, so that would also match.<br class="">
<br class="">
Regards,<br class="">
Michael<br class="">
<br class="">
<br class="">
<div class="moz-cite-prefix">Am 03.06.21 um 07:36
schrieb Mark Webb-Johnson:<br class="">
</div>
<blockquote type="cite"
cite="mid:B95AD300-ED38-4826-8581-607C4170461E@webb-johnson.net"
class="">
<meta http-equiv="Content-Type"
content="text/html; charset=UTF-8" class="">
<div class=""><br class="">
</div>
<div class="">I’m working on an implementation
of IP stack over CAN for the Tesla Roadster.
IP frames are encoded as a length followed by
a sequence of CAN frames, all on the same ID.
This runs over a 1MHz bus, so presumably the
traffic volume could be high at times.</div>
<div class=""><br class="">
</div>
<div class="">I was having problems with this
running on CAN2, so tried CAN1 and it worked
perfectly. Here are some simple dumps of a
single PING packet (and single PING response
packet):</div>
<div class=""><br class="">
</div>
<div class="">ID #111 is used to transmit an IP
packet, and ID #110 is used to receive an IP
packet. The special empty data frame is an
acknowledgment.</div>
<div class=""><br class="">
</div>
<div class="">Using latest master branch code
(3.2.016-196-g0aad1a9f/ota_1/edge (build idf
v3.3.4-848-g1ff5e24b1 Jun 2 2021 09:28:58)).</div>
<div class=""><br class="">
</div>
<div class="">So, first let’s test with
traffic
on CAN1 (active, 1Mbps), and listening on CAN2
(listen, 1Mbps):</div>
<div class=""><br class="">
</div>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class="">
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono"><span
style="font-style: normal;" class="">TCPDUMP:</span></font></blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono"><span
style="font-style: normal;" class=""><br
class="">
</span></font></blockquote>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class="">
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class="">
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class=""><span
style="font-family: "Andale
Mono";" class="">05:57:55.980291 IP
(tos 0x0, ttl 64, id 43101, offset 0,
flags [DF], proto ICMP (1), length 84)</span></blockquote>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class="">
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class=""><font
class="" face="Andale Mono"><span
style="font-style: normal;" class="">
10.10.99.3 > 10.10.99.2: ICMP
echo request, id 23372, seq 1, length
64</span></font></blockquote>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class="">
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class=""><font
class="" face="Andale Mono"><span
style="font-style: normal;" class=""><span class="Apple-tab-span" style="white-space:pre"> </span>0x0000:
4500 0054 a85d 4000 4001 b832 0a0a
6303 <a
class="moz-txt-link-abbreviated"
href="mailto:E..T.]@.@..2..c"
moz-do-not-send="true">E..T.]@.@..2..c</a>.</span></font></blockquote>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class="">
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class=""><font
class="" face="Andale Mono"><span
style="font-style: normal;" class=""><span class="Apple-tab-span" style="white-space:pre"> </span>0x0010:
0a0a 6302 0800 7df8 5b4c 0001 5361
b860 ..c...}.[L..Sa.`</span></font></blockquote>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class="">
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class=""><font
class="" face="Andale Mono"><span
style="font-style: normal;" class=""><span class="Apple-tab-span" style="white-space:pre"> </span>0x0020:
19f5 0e00 0809 0a0b 0c0d 0e0f 1011
1213 ................</span></font></blockquote>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class="">
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class=""><font
class="" face="Andale Mono"><span
style="font-style: normal;" class=""><span class="Apple-tab-span" style="white-space:pre"> </span>0x0030:
1415 1617 1819 1a1b 1c1d 1e1f 2021
2223 .............!"#</span></font></blockquote>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class="">
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class=""><font
class="" face="Andale Mono"><span
style="font-style: normal;" class=""><span class="Apple-tab-span" style="white-space:pre"> </span>0x0040:
2425 2627 2829 2a2b 2c2d 2e2f 3031
3233 $%&'()*+,-./0123</span></font></blockquote>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class="">
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class=""><font
class="" face="Andale Mono"><span
style="font-style: normal;" class=""><span class="Apple-tab-span" style="white-space:pre"> </span>0x0050:
3435 3637
4567</span></font></blockquote>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class="">
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class=""><font
class="" face="Andale Mono"><span
style="font-style: normal;" class=""><br
class="">
</span></font></blockquote>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class="">
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class=""><font
class="" face="Andale Mono"><span
style="font-style: normal;" class="">05:57:56.436190
IP (tos 0x0, ttl 64, id 14937, offset
0, flags [none], proto ICMP (1),
length 84)</span></font></blockquote>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class="">
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class=""><font
class="" face="Andale Mono"><span
style="font-style: normal;" class="">
10.10.99.2 > 10.10.99.3: ICMP
echo reply, id 23372, seq 1, length 64</span></font></blockquote>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class="">
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class=""><font
class="" face="Andale Mono"><span
style="font-style: normal;" class=""><span class="Apple-tab-span" style="white-space:pre"> </span>0x0000:
4500 0054 3a59 0000 4001 6637 0a0a
6302 <a
class="moz-txt-link-abbreviated"
href="mailto:E..T:Y..@.f7..c"
moz-do-not-send="true">E..T:Y..@.f7..c</a>.</span></font></blockquote>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class="">
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class=""><font
class="" face="Andale Mono"><span
style="font-style: normal;" class=""><span class="Apple-tab-span" style="white-space:pre"> </span>0x0010:
0a0a 6303 0000 85f8 5b4c 0001 5361
b860 ..c.....[L..Sa.`</span></font></blockquote>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class="">
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class=""><font
class="" face="Andale Mono"><span
style="font-style: normal;" class=""><span class="Apple-tab-span" style="white-space:pre"> </span>0x0020:
19f5 0e00 0809 0a0b 0c0d 0e0f 1011
1213 ................</span></font></blockquote>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class="">
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class=""><font
class="" face="Andale Mono"><span
style="font-style: normal;" class=""><span class="Apple-tab-span" style="white-space:pre"> </span>0x0030:
1415 1617 1819 1a1b 1c1d 1e1f 2021
2223 .............!"#</span></font></blockquote>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class="">
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class=""><font
class="" face="Andale Mono"><span
style="font-style: normal;" class=""><span class="Apple-tab-span" style="white-space:pre"> </span>0x0040:
2425 2627 2829 2a2b 2c2d 2e2f 3031
3233 $%&'()*+,-./0123</span></font></blockquote>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class="">
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class=""><font
class="" face="Andale Mono"><span
style="font-style: normal;" class=""><span class="Apple-tab-span" style="white-space:pre"> </span>0x0050:
3435 3637
4567</span></font></blockquote>
<font class="" face="Andale Mono"><span
style="font-style: normal;" class=""><br
class="">
</span></font></blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono"><span
style="font-style: normal;" class="">Traffic
(as shown on PC the other end of the can
log tcp connection):</span></font></blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono"><span
style="font-style: normal;" class=""><br
class="">
</span></font></blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono">
<blockquote style="margin: 0px 0px 0px
40px; border: none; padding: 0px;"
class="">tx: #111 54 00</blockquote>
<blockquote style="margin: 0px 0px 0px
40px; border: none; padding: 0px;"
class="">tx: #111 45 00 00 54 a8 5d 40
00</blockquote>
<blockquote style="margin: 0px 0px 0px
40px; border: none; padding: 0px;"
class="">tx: #111 40 01 b8 32 0a 0a 63
03</blockquote>
<blockquote style="margin: 0px 0px 0px
40px; border: none; padding: 0px;"
class="">tx: #111 0a 0a 63 02 08 00 7d
f8</blockquote>
<blockquote style="margin: 0px 0px 0px
40px; border: none; padding: 0px;"
class="">tx: #111 5b 4c 00 01 53 61 b8
60</blockquote>
<blockquote style="margin: 0px 0px 0px
40px; border: none; padding: 0px;"
class="">tx: #111 19 f5 0e 00 08 09 0a
0b</blockquote>
<blockquote style="margin: 0px 0px 0px
40px; border: none; padding: 0px;"
class="">tx: #111 0c 0d 0e 0f 10 11 12
13</blockquote>
<blockquote style="margin: 0px 0px 0px
40px; border: none; padding: 0px;"
class="">tx: #111 14 15 16 17 18 19 1a
1b</blockquote>
<blockquote style="margin: 0px 0px 0px
40px; border: none; padding: 0px;"
class="">tx: #111 1c 1d 1e 1f 20 21 22
23</blockquote>
<blockquote style="margin: 0px 0px 0px
40px; border: none; padding: 0px;"
class="">tx: #111 24 25 26 27 28 29 2a
2b</blockquote>
<blockquote style="margin: 0px 0px 0px
40px; border: none; padding: 0px;"
class="">tx: #111 2c 2d 2e 2f 30 31 32
33</blockquote>
<blockquote style="margin: 0px 0px 0px
40px; border: none; padding: 0px;"
class="">tx: #111 34 35 36 37</blockquote>
<blockquote style="margin: 0px 0px 0px
40px; border: none; padding: 0px;"
class=""><br class="">
</blockquote>
<blockquote style="margin: 0px 0px 0px
40px; border: none; padding: 0px;"
class="">rx: #110</blockquote>
<blockquote style="margin: 0px 0px 0px
40px; border: none; padding: 0px;"
class="">rx: #110 54 00</blockquote>
<blockquote style="margin: 0px 0px 0px
40px; border: none; padding: 0px;"
class="">rx: #110 45 00 00 54 3a 59 00
00</blockquote>
<blockquote style="margin: 0px 0px 0px
40px; border: none; padding: 0px;"
class="">rx: #110 40 01 66 37 0a 0a 63
02</blockquote>
<blockquote style="margin: 0px 0px 0px
40px; border: none; padding: 0px;"
class="">rx: #110 0a 0a 63 03 00 00 85
f8</blockquote>
<blockquote style="margin: 0px 0px 0px
40px; border: none; padding: 0px;"
class="">rx: #110 5b 4c 00 01 53 61 b8
60</blockquote>
<blockquote style="margin: 0px 0px 0px
40px; border: none; padding: 0px;"
class="">rx: #110 19 f5 0e 00 08 09 0a
0b</blockquote>
<blockquote style="margin: 0px 0px 0px
40px; border: none; padding: 0px;"
class="">rx: #110 0c 0d 0e 0f 10 11 12
13</blockquote>
<blockquote style="margin: 0px 0px 0px
40px; border: none; padding: 0px;"
class="">rx: #110 14 15 16 17 18 19 1a
1b</blockquote>
<blockquote style="margin: 0px 0px 0px
40px; border: none; padding: 0px;"
class="">rx: #110 1c 1d 1e 1f 20 21 22
23</blockquote>
<blockquote style="margin: 0px 0px 0px
40px; border: none; padding: 0px;"
class="">rx: #110 24 25 26 27 28 29 2a
2b</blockquote>
<blockquote style="margin: 0px 0px 0px
40px; border: none; padding: 0px;"
class="">rx: #110 2c 2d 2e 2f 30 31 32
33</blockquote>
<blockquote style="margin: 0px 0px 0px
40px; border: none; padding: 0px;"
class="">rx: #110 34 35 36 37</blockquote>
<br class="">
</font></blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono">CAN1 active:</font></blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono"><br class="">
</font></blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono">
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1T11
111 54 00</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1R11
110</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class=""><br
class="">
</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1CER
TX_Queue T11 111 40 01 b8 32 0a 0a 63 03</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1T11
111 45 00 00 54 a8 5d 40 00</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1T11
111 40 01 b8 32 0a 0a 63 03</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1CER
TX_Queue T11 111 5b 4c 00 01 53 61 b8 60</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1T11
111 0a 0a 63 02 08 00 7d f8</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1T11
111 5b 4c 00 01 53 61 b8 60</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1CER
TX_Queue T11 111 0c 0d 0e 0f 10 11 12 13</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1T11
111 19 f5 0e 00 08 09 0a 0b</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1T11
111 0c 0d 0e 0f 10 11 12 13</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1CER
TX_Queue T11 111 1c 1d 1e 1f 20 21 22 23</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1T11
111 14 15 16 17 18 19 1a 1b</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1T11
111 1c 1d 1e 1f 20 21 22 23</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1CER
TX_Queue T11 111 2c 2d 2e 2f 30 31 32 33</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1T11
111 24 25 26 27 28 29 2a 2b</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1T11
111 2c 2d 2e 2f 30 31 32 33</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1T11
111 34 35 36 37</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class=""><br
class="">
</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1R11
110 54 00</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1R11
110 45 00 00 54 3a 59 00 00</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1R11
110 40 01 66 37 0a 0a 63 02</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1R11
110 0a 0a 63 03 00 00 85 f8</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1R11
110 5b 4c 00 01 53 61 b8 60</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1R11
110 19 f5 0e 00 08 09 0a 0b</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1R11
110 0c 0d 0e 0f 10 11 12 13</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1R11
110 14 15 16 17 18 19 1a 1b</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1R11
110 1c 1d 1e 1f 20 21 22 23</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1R11
110 24 25 26 27 28 29 2a 2b</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1R11
110 2c 2d 2e 2f 30 31 32 33</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">1R11
110 34 35 36 37</blockquote>
<br class="">
</font></blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono">CAN2 listen:</font></blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono"><br class="">
</font></blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono">
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2R11
111 54 00</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2R11
110</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class=""><br
class="">
</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2R11
111 45 00 00 54 a8 5d 40 00</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2R11
111 40 01 b8 32 0a 0a 63 03</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2R11
111 0a 0a 63 02 08 00 7d f8</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2R11
111 5b 4c 00 01 53 61 b8 60</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2R11
111 19 f5 0e 00 08 09 0a 0b</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2R11
111 0c 0d 0e 0f 10 11 12 13</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2R11
111 14 15 16 17 18 19 1a 1b</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2R11
111 1c 1d 1e 1f 20 21 22 23</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2R11
111 24 25 26 27 28 29 2a 2b</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2R11
111 2c 2d 2e 2f 30 31 32 33</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2R11
111 34 35 36 37</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class=""><br
class="">
</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2R11
110 54 00</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2CER
Error intr=10 rxpkt=14 txpkt=0
errflags=0x23401c01 rxerr=0 txerr=0
rxinval=0 rxovr=0 txovr=0 txdelay=0
txfail=0 wdgreset=0 errreset=0</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2R11
110 40 01 66 37 0a 0a 63 02</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2R11
110 19 f5 0e 00 08 09 0a 0b</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2R11
110 34 35 36 37</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2R11
110 45 00 00 54 3a 59 00 00</blockquote>
</font></blockquote>
</blockquote>
<div style="caret-color: rgb(0, 0, 0);" class=""><br
class="">
</div>
<div style="caret-color: rgb(0, 0, 0);" class="">Conclusion
is that the CAN1 traffic looks fine, and the
PING packet gets a good reply. All successful.
But the CAN2 listen is missing a few packets
and the last packet is out of order.</div>
<div style="caret-color: rgb(0, 0, 0);" class=""><br
class="">
</div>
<div style="caret-color: rgb(0, 0, 0);" class="">Now,
let’s test with traffic on CAN2 (active,
1Mbps), and listening on CAN1 (listen, 1Mbps):</div>
<div class=""><br class="">
</div>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class="">
<div style="caret-color: rgb(0, 0, 0);"
class=""><font class="" face="Andale Mono">TCPDUMP:</font></div>
<div style="caret-color: rgb(0, 0, 0);"
class=""><font class="" face="Andale Mono"><br
class="">
</font></div>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class="">
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class="">
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0);" class="">
<div class="">06:00:33.004060 IP (tos
0x0, ttl 64, id 58240, offset 0,
flags [DF], proto ICMP (1), length
84)</div>
</span></font></div>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono"><span
style="caret-color: rgb(0, 0, 0);"
class="">
<div class=""> 10.10.99.3 >
10.10.99.2: ICMP echo request, id
23393, seq 1, length 64</div>
</span></font></blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono"><span
style="caret-color: rgb(0, 0, 0);"
class="">
<div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>0x0000:
4500 0054 e380 4000 4001 7d0f 0a0a
6303 <a
class="moz-txt-link-abbreviated"
href="mailto:E..T..@.@"
moz-do-not-send="true">E..T..@.@</a>.}...c.</div>
</span></font></blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono"><span
style="caret-color: rgb(0, 0, 0);"
class="">
<div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>0x0010:
0a0a 6302 0800 7cc8 5b61 0001 f161
b860 ..c...|.[a...a.`</div>
</span></font></blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono"><span
style="caret-color: rgb(0, 0, 0);"
class="">
<div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>0x0020:
8b0f 0000 0809 0a0b 0c0d 0e0f 1011
1213 ................</div>
</span></font></blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono"><span
style="caret-color: rgb(0, 0, 0);"
class="">
<div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>0x0030:
1415 1617 1819 1a1b 1c1d 1e1f 2021
2223 .............!"#</div>
</span></font></blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono"><span
style="caret-color: rgb(0, 0, 0);"
class="">
<div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>0x0040:
2425 2627 2829 2a2b 2c2d 2e2f 3031
3233 $%&'()*+,-./0123</div>
</span></font></blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono"><span
style="caret-color: rgb(0, 0, 0);"
class="">
<div class=""><span class="Apple-tab-span" style="white-space: pre;"> </span>0x0050:
3435 3637
4567</div>
</span></font></blockquote>
<font class="" face="Andale Mono"><span
style="caret-color: rgb(0, 0, 0);"
class=""><br class="">
</span></font></blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono">Traffic (as shown on PC
the other end of the can log tcp
connection):</font></blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono"><br class="">
</font></blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class="">
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono">
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">tx:
#111 54 00</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">tx:
#111 45 00 00 54 e3 80 40 00</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">tx:
#111 40 01 7d 0f 0a 0a 63 03</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">tx:
#111 0a 0a 63 02 08 00 7c c8</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">tx:
#111 5b 61 00 01 f1 61 b8 60</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">tx:
#111 8b 0f 00 00 08 09 0a 0b</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">tx:
#111 0c 0d 0e 0f 10 11 12 13</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">tx:
#111 14 15 16 17 18 19 1a 1b</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">tx:
#111 1c 1d 1e 1f 20 21 22 23</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">tx:
#111 24 25 26 27 28 29 2a 2b</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">tx:
#111 2c 2d 2e 2f 30 31 32 33</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">tx:
#111 34 35 36 37</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class=""><br
class="">
</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">rx:
#110</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">rx:
#110 54 00</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">rx:
#110 45 00 00 54 3a 5a 00 00</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">rx:
#110 0a 0a 63 03 00 00 84 c8</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">rx:
#110 8b 0f 00 00 08 09 0a 0b</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">rx:
#110 34 35 36 37</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">rx:
#110 40 01 66 36 0a 0a 63 02</blockquote>
</font></blockquote>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono"><br class="">
</font></blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono">CAN2 active:</font></blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono"><br class="">
</font></blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono">
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2T11
111 54 00</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2R11
110</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class=""><br
class="">
</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2CER
TX_Queue T11 111 40 01 7d 0f 0a 0a 63 03</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2T11
111 45 00 00 54 e3 80 40 00</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2T11
111 40 01 7d 0f 0a 0a 63 03</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2CER
TX_Queue T11 111 5b 61 00 01 f1 61 b8 60</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2T11
111 0a 0a 63 02 08 00 7c c8</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2T11
111 5b 61 00 01 f1 61 b8 60</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2CER
TX_Queue T11 111 0c 0d 0e 0f 10 11 12 13</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2T11
111 8b 0f 00 00 08 09 0a 0b</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2T11
111 0c 0d 0e 0f 10 11 12 13</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2CER
TX_Queue T11 111 1c 1d 1e 1f 20 21 22 23</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2T11
111 14 15 16 17 18 19 1a 1b</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2T11
111 1c 1d 1e 1f 20 21 22 23</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2CER
TX_Queue T11 111 2c 2d 2e 2f 30 31 32 33</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2T11
111 24 25 26 27 28 29 2a 2b</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2T11
111 2c 2d 2e 2f 30 31 32 33</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2T11
111 34 35 36 37</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class=""><br
class="">
</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2R11
110 54 00</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2R11
110 45 00 00 54 3a 5a 00 00</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2CER
Error intr=15 rxpkt=3 txpkt=12
errflags=0x23401c01 rxerr=0 txerr=0
rxinval=0 rxovr=0 txovr=0 txdelay=5
txfail=0 wdgreset=0 errreset=0</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2R11
110 0a 0a 63 03 00 00 84 c8</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2R11
110 8b 0f 00 00 08 09 0a 0b</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2R11
110 34 35 36 37</blockquote>
<blockquote style="margin: 0 0 0 40px;
border: none; padding: 0px;" class="">2R11
110 40 01 66 36 0a 0a 63 02</blockquote>
<br class="">
</font></blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono">CAN1 listen:</font></blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono"><br class="">
</font></blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class="">
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono">1R11 111 54 00<br
class="">
1R11 110</font></blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono"><br class="">
1R11 111 45 00 00 54 e3 80 40 00<br
class="">
1R11 111 40 01 7d 0f 0a 0a 63 03<br
class="">
1R11 111 0a 0a 63 02 08 00 7c c8<br
class="">
1R11 111 5b 61 00 01 f1 61 b8 60<br
class="">
1R11 111 8b 0f 00 00 08 09 0a 0b<br
class="">
1R11 111 0c 0d 0e 0f 10 11 12 13<br
class="">
1R11 111 14 15 16 17 18 19 1a 1b<br
class="">
1R11 111 1c 1d 1e 1f 20 21 22 23<br
class="">
1R11 111 24 25 26 27 28 29 2a 2b<br
class="">
1R11 111 2c 2d 2e 2f 30 31 32 33<br
class="">
1R11 111 34 35 36 37</font></blockquote>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class=""><font class=""
face="Andale Mono"><br class="">
1R11 110 54 00<br class="">
1R11 110 45 00 00 54 3a 5a 00 00<br
class="">
1R11 110 40 01 66 36 0a 0a 63 02<br
class="">
1R11 110 0a 0a 63 03 00 00 84 c8<br
class="">
1R11 110 5b 61 00 01 f1 61 b8 60<br
class="">
1R11 110 8b 0f 00 00 08 09 0a 0b<br
class="">
1R11 110 0c 0d 0e 0f 10 11 12 13<br
class="">
1R11 110 14 15 16 17 18 19 1a 1b<br
class="">
1R11 110 1c 1d 1e 1f 20 21 22 23<br
class="">
1R11 110 24 25 26 27 28 29 2a 2b<br
class="">
1R11 110 2c 2d 2e 2f 30 31 32 33<br
class="">
1R11 110 34 35 36 37</font></blockquote>
</blockquote>
<div style="caret-color: rgb(0, 0, 0);" class=""><br
class="">
</div>
<div style="caret-color: rgb(0, 0, 0);" class="">Conclusion
is that the CAN2 transmit traffic looks fine,
but no PING reply received via CAN. The CAN1
listen shows the reply just fine.</div>
<div style="caret-color: rgb(0, 0, 0);" class=""><br
class="">
</div>
<div style="caret-color: rgb(0, 0, 0);" class="">Here
is that last CAN1 listen, with timestamps:</div>
<div style="caret-color: rgb(0, 0, 0);" class=""><br
class="">
</div>
<blockquote style="margin: 0 0 0 40px; border:
none; padding: 0px;" class="">
<div class="">
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0); font-style: normal;" class="">1622696433.080107
1R11 111 54 00</span></font></div>
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0); font-style: normal;" class="">1622696433.081657
1R11 110</span></font></div>
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0); font-style: normal;" class=""><br
class="">
</span></font></div>
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0); font-style: normal;" class="">1622696433.227479
1R11 111 45 00 00 54 e3 80 40 00</span></font></div>
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0); font-style: normal;" class="">1622696433.228318
1R11 111 40 01 7d 0f 0a 0a 63 03</span></font></div>
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0); font-style: normal;" class="">1622696433.245727
1R11 111 0a 0a 63 02 08 00 7c c8</span></font></div>
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0); font-style: normal;" class="">1622696433.246214
1R11 111 5b 61 00 01 f1 61 b8 60</span></font></div>
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0); font-style: normal;" class="">1622696433.248219
1R11 111 8b 0f 00 00 08 09 0a 0b</span></font></div>
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0); font-style: normal;" class="">1622696433.248772
1R11 111 0c 0d 0e 0f 10 11 12 13</span></font></div>
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0); font-style: normal;" class="">1622696433.250774
1R11 111 14 15 16 17 18 19 1a 1b</span></font></div>
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0); font-style: normal;" class="">1622696433.251338
1R11 111 1c 1d 1e 1f 20 21 22 23</span></font></div>
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0); font-style: normal;" class="">1622696433.253380
1R11 111 24 25 26 27 28 29 2a 2b</span></font></div>
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0); font-style: normal;" class="">1622696433.253944
1R11 111 2c 2d 2e 2f 30 31 32 33</span></font></div>
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0); font-style: normal;" class="">1622696433.265937
1R11 111 34 35 36 37</span></font></div>
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0); font-style: normal;" class=""><br
class="">
</span></font></div>
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0); font-style: normal;" class="">1622696433.269221
1R11 110 54 00</span></font></div>
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0); font-style: normal;" class="">1622696433.272095
1R11 110 45 00 00 54 3a 5a 00 00</span></font></div>
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0); font-style: normal;" class="">1622696433.272125
1R11 110 40 01 66 36 0a 0a 63 02</span></font></div>
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0); font-style: normal;" class="">1622696433.272156
1R11 110 0a 0a 63 03 00 00 84 c8</span></font></div>
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0); font-style: normal;" class="">1622696433.272193
1R11 110 5b 61 00 01 f1 61 b8 60</span></font></div>
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0); font-style: normal;" class="">1622696433.272245
1R11 110 8b 0f 00 00 08 09 0a 0b</span></font></div>
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0); font-style: normal;" class="">1622696433.272277
1R11 110 0c 0d 0e 0f 10 11 12 13</span></font></div>
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0); font-style: normal;" class="">1622696433.272314
1R11 110 14 15 16 17 18 19 1a 1b</span></font></div>
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0); font-style: normal;" class="">1622696433.272354
1R11 110 1c 1d 1e 1f 20 21 22 23</span></font></div>
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0); font-style: normal;" class="">1622696433.272387
1R11 110 24 25 26 27 28 29 2a 2b</span></font></div>
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0); font-style: normal;" class="">1622696433.272420
1R11 110 2c 2d 2e 2f 30 31 32 33</span></font></div>
<div class=""><font class="" face="Andale
Mono"><span style="caret-color: rgb(0,
0, 0); font-style: normal;" class="">1622696433.272452
1R11 110 34 35 36 37</span></font></div>
</div>
</blockquote>
<div style="caret-color: rgb(0, 0, 0);" class=""><br
class="">
</div>
<div style="caret-color: rgb(0, 0, 0);" class="">It
is 1Mbps, with 30us or so between each packet.
This is the <b class="">only</b> traffic on
the bus. Everything else is turned off.
Roughly 12 packets each way. Surely even if we
were hitting a performance limit, our buffers
can handle 12 packets?</div>
<div style="caret-color: rgb(0, 0, 0);" class=""><br
class="">
</div>
<div style="caret-color: rgb(0, 0, 0);" class="">The
good news is that I have a good environment to
replicate this issue now, so any fix should be
easy to test.</div>
<div style="caret-color: rgb(0, 0, 0);" class=""><br
class="">
</div>
<div style="caret-color: rgb(0, 0, 0);" class="">I
haven’t worked on the MCP2515 driver in
our
code in a long time, but it certainly seems
something is messed up and that could be badly
affecting vehicle modules using anything other
than CAN1.</div>
<div style="caret-color: rgb(0, 0, 0);" class=""><br
class="">
</div>
<div style="caret-color: rgb(0, 0, 0);" class="">I
will start to look at this over the weekend,
but has anyone got any ideas/suggestions?
Perhaps the bit timing registers are off by a
small amount (so it works on CAN1 but not on
CAN2)? Or something more serious in our
driver?</div>
<div style="caret-color: rgb(0, 0, 0);" class=""><br
class="">
</div>
<div style="caret-color: rgb(0, 0, 0);" class="">Regards,
Mark.</div>
<div style="caret-color: rgb(0, 0, 0);" class=""><br
class="">
</div>
<br class="">
<fieldset class="mimeAttachmentHeader"></fieldset>
<pre class="moz-quote-pre" wrap="">_______________________________________________
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</blockquote>
<br class="">
<pre class="moz-signature" cols="72">--
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26</pre>
</div>
<span id="cid:4729234A-8C3A-401F-9A97-EA6C8CE8B462"><MCP2515Calc-1000kbit.ods></span></div>
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<pre class="moz-quote-pre" wrap="">_______________________________________________
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</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>
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