<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">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 face="Andale Mono" class=""><span style="font-style: normal; font-size: 12px;" class="">Error flag: 0x23401c01</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-style: normal; font-size: 12px;" class=""><br class=""></span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-style: normal; font-size: 12px;" class="">intstat 0x23</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-style: normal; font-size: 12px;" class=""> ERRIF Error Interrupt pending</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-style: normal; font-size: 12px;" class=""> RX0IF Rx buffer 0 full interrupt</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-style: normal; font-size: 12px;" class=""> RX1IF Rx buffer 1 full interrupt</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-style: normal; font-size: 12px;" class=""><br class=""></span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-style: normal; font-size: 12px;" class="">errflag 0x40</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-style: normal; font-size: 12px;" class=""> RX0OVR Rx buffer 0 overflow</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-style: normal; font-size: 12px;" class=""><br class=""></span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-style: normal; font-size: 12px;" class="">intflag 0x1c01</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-style: normal; font-size: 12px;" class=""> 0x01 Implied from Rx buffer 0 full</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-style: normal; font-size: 12px;" class=""><br class=""></span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-style: normal; font-size: 12px;" class=""> 0x1c = 0001 1100</span></font></div><div class=""><font face="Andale Mono" class=""><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 face="Andale Mono" class=""><span style="font-style: normal; font-size: 12px;" class=""> Means (errflag & EFLG_RX01OVR), clear RX buffer overflow flags</span></font></div><div class=""><font face="Andale Mono" class=""><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="">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">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">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">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..@.@">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="">
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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>
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