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    Fix commit is <a
href="https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3/commit/8fef3f5fb6eec9fca26997e01d9c7d08080cdc06">https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3/commit/8fef3f5fb6eec9fca26997e01d9c7d08080cdc06</a><br>
    <br>
    Greg, please test.<br>
    <br>
    New build with SPIRAM fix: <a
      href="https://ovms.dexters-web.de/firmware/ota/v3.1/edge/">https://ovms.dexters-web.de/firmware/ota/v3.1/edge/</a><br>
    <br>
    Regards,<br>
    Michael<br>
    <br>
    <br>
    <div class="moz-cite-prefix">Am 12.12.19 um 11:17 schrieb Michael
      Balzer:<br>
    </div>
    <blockquote type="cite"
      cite="mid:7b52c31f-1fe5-cc5a-ec52-56bd6df7553a@expeedo.de">
      <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
      Last line of a2l was missing:<br>
      <br>
      <tt>#!/bin/bash</tt><tt><br>
      </tt><tt>elf=~/esp/Open-Vehicle-Monitoring-System-3/vehicle/OVMS.V3/build/ovms3.elf</tt><tt><br>
      </tt><tt>for adr in $* ; do</tt><tt><br>
      </tt><tt>  if [[ "$adr" =~ "elf" ]] ; then</tt><tt><br>
      </tt><tt>    elf="$adr"</tt><tt><br>
      </tt><tt>  else</tt><tt><br>
      </tt><tt>    cmd+=" -ex 'l *${adr/:*/}'"</tt><tt><br>
      </tt><tt>  fi</tt><tt><br>
      </tt><tt>done</tt><tt><br>
      </tt><tt>cmd+=" -ex 'q'"</tt><tt><br>
      </tt><tt>echo "Using elf file: $elf"</tt><br>
      <tt>eval xtensa-esp32-elf-gdb -batch $elf $cmd 2>/dev/null </tt><br>
      <br>
      <br>
      <br>
      <div class="moz-cite-prefix">Am 12.12.19 um 11:12 schrieb Michael
        Balzer:<br>
      </div>
      <blockquote type="cite"
        cite="mid:eed5cc60-9aa8-8b65-bb80-184125826c24@expeedo.de">
        <meta http-equiv="Content-Type" content="text/html;
          charset=UTF-8">
        Mark,<br>
        <br>
        1) maybe I missed posting my later version of a2l, which
        automatically strips the stack pointers from the ":" address
        syntax so you can copy&paste the USB output. Here it is:<br>
        <br>
        <tt>#!/bin/bash</tt><tt><br>
        </tt><tt>elf=~/esp/Open-Vehicle-Monitoring-System-3/vehicle/OVMS.V3/build/ovms3.elf</tt><tt><br>
        </tt><tt>for adr in $* ; do</tt><tt><br>
        </tt><tt>  if [[ "$adr" =~ "elf" ]] ; then</tt><tt><br>
        </tt><tt>    elf="$adr"</tt><tt><br>
        </tt><tt>  else</tt><tt><br>
        </tt><tt>    cmd+=" -ex 'l *${adr/:*/}'"</tt><tt><br>
        </tt><tt>  fi</tt><tt><br>
        </tt><tt>done</tt><tt><br>
        </tt><tt>cmd+=" -ex 'q'"</tt><tt><br>
        </tt><tt>echo "Using elf file: $elf"</tt><tt><br>
        </tt><br>
        <br>
        2) You're right, the bug is tx_frame with null origin
        overwriting body.bus in the union. I didn't notice that when
        checking Marko's submission.<br>
        <br>
        tx_frame is a copy of the last frame given to the bus for
        transmission. The queue msg is gone when the TX done IRQ comes
        in, and Marko needed a copy of the frame the TX IRQ relates to.
        I asked him (see PR discussion), he checked and confirmed that
        all TX is done sequentially, so a single buffer is sufficient.<br>
        <br>
        Swapping the lines would work. The frame.origin also shouldn't
        be null, but the handler should tolerate that. …oops, tx_frame
        also doesn't get initialized in the canbus constructor, so
        there's also potentially garbage in tx_frame if due to some bug
        a TX IRQ is generated or processed without a previous tx.<br>
        <br>
        I'll do the fixes… and also rename tx_frame to m_tx_frame for
        consistency.<br>
        <br>
        Regards,<br>
        Michael<br>
        <br>
        <br>
        <div class="moz-cite-prefix">Am 12.12.19 um 01:20 schrieb Mark
          Webb-Johnson:<br>
        </div>
        <blockquote type="cite"
          cite="mid:DDE51878-283B-45E6-8423-FF095EF621A6@webb-johnson.net">
          <meta http-equiv="Content-Type" content="text/html;
            charset=UTF-8">
          <div class="">Two issues:</div>
          <div class=""><br class="">
          </div>
          <div class=""><u class=""><b class="">1] A2L</b></u></div>
          <div class=""><br class="">
          </div>
          My a2l is this:
          <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: 14px;"
                    class="">#!/bin/bash</span></font></div>
              <div class=""><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">elf=3.2.007.ovms3.elf</span></font></div>
              <div class=""><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">for adr in $* ; do</span></font></div>
              <div class=""><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">  if [[ "$adr" =~ "elf" ]] ; then</span></font></div>
              <div class=""><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">    elf="$adr"</span></font></div>
              <div class=""><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">  else</span></font></div>
              <div class=""><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">    cmd+=" -ex 'l *$adr'"</span></font></div>
              <div class=""><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">  fi</span></font></div>
              <div class=""><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">done</span></font></div>
              <div class=""><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">cmd+=" -ex 'q'"</span></font></div>
              <div class=""><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">echo "Using elf file: $elf"</span></font></div>
              <div class=""><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">echo "xtensa-esp32-elf-gdb -batch $elf
                    $cmd"</span></font></div>
              <div class=""><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">eval xtensa-esp32-elf-gdb -batch $elf $cmd
                    2>/dev/null #| grep "^0x.* is in "</span></font></div>
            </div>
          </blockquote>
          <div class="">
            <div><br class="">
            </div>
            <div>When I run it, I get:</div>
            <div><br class="">
            </div>
          </div>
          <blockquote style="margin: 0 0 0 40px; border: none; padding:
            0px;" class="">
            <div><font class="" face="Andale Mono"><span
                  style="font-style: normal; font-size: 14px;" class="">$
                  a2l 3.2.007.ovms3.elf 0x400d5e4c:0x3ffc5c40
                  0x7ffffffd:0x3ffc5c90</span></font></div>
            <div><font class="" face="Andale Mono"><span
                  style="font-style: normal; font-size: 14px;" class="">Using
                  elf file: 3.2.007.ovms3.elf</span></font></div>
            <div><font class="" face="Andale Mono"><span
                  style="font-size: 14px;" class="">xtensa-esp32-elf-gdb
                  -batch 3.2.007.ovms3.elf  -ex 'l
                  *0x400d5e4c:0x3ffc5c40' -ex 'l *0x7ffffffd:0x3ffc5c90'
                  -ex ‘q'</span></font></div>
          </blockquote>
          <div class="">
            <div><br class="">
            </div>
            <div>And a manual run gives:</div>
            <div><br class="">
            </div>
          </div>
          <blockquote style="margin: 0 0 0 40px; border: none; padding:
            0px;" class="">
            <div>
              <div><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">$ xtensa-esp32-elf-gdb -batch
                    3.2.007.ovms3.elf  -ex 'l *0x400d5e4c:0x3ffc5c40'
                    -ex 'l *0x7ffffffd:0x3ffc5c90' -ex 'q'</span></font></div>
              <div><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">Junk at end of line specification.</span></font></div>
              <div><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class=""><br class="">
                  </span></font></div>
              <div><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">$ </span><span style="font-size: 14px;"
                    class="">xtensa-esp32-elf-gdb 3.2.007.ovms3.elf</span></font></div>
              <div><font class="" face="Andale Mono"><span
                    style="font-size: 14px;" class="">GNU gdb
                    (crosstool-NG crosstool-ng-1.22.0-80-g6c4433a) 7.10</span></font></div>
              <div><span style="font-size: 14px; font-family:
                  "Andale Mono";" class="">(gdb) l
                  *0x400d5e4c:0x3ffc5c40</span></div>
              <div><font class="" face="Andale Mono"><span
                    style="font-size: 14px;" class="">
                    <div>Junk at end of line specification.</div>
                    <div>(gdb) l *0x7ffffffd:0x3ffc5c90</div>
                    <div>(gdb) quit</div>
                  </span></font></div>
            </div>
          </blockquote>
          <div class="">
            <div><br class="">
            </div>
            <div><u class=""><b class="">2] Frame origin</b></u></div>
            <div><br class="">
            </div>
            <div>Regarding the CAN_txcallback, I think you are correct.
              And both generators of that message set the frame
              correctly. So my initial thought was that it is either a
              memory corruption, or somewhere else sending a frame with
              garbage data.</div>
            <div><br class="">
            </div>
            <div>I do see this technique used in both the mcp2515 and
              esp32can drivers:</div>
            <div><br class="">
            </div>
          </div>
          <blockquote style="margin: 0 0 0 40px; border: none; padding:
            0px;" class="">
            <div class="">
              <div><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">msg.body.bus = me;</span></font></div>
              <div><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">msg.body.frame = me->tx_frame;</span></font></div>
            </div>
          </blockquote>
          <div class="">
            <div><br class="">
            </div>
            <div>I don’t normally just copy structures over like that. I
              memcpy() them, but I guess it must work. However, as our
              CAN_queue_msg_t is a union of CAN_frame_t (frame, with
              first member of the structure a canbus*) and 'canbus*
              bus’, that is a little worrying. It seems that the
              msg.body.bus will get overwritten with whatever is in
              msg.body.frame.origin. I can’t see anywhere that
              tx_frame.origin is set - which is scary because that would
              mean it is always random junk.</div>
            <div><br class="">
            </div>
            <div>Maybe it works if tx_frame.origin is set to the bus
              before anything else, but not in Greg’s circumstances
              where something else arrives first. Perhaps related to
              obd2ecu? I only see tx_frame set in can.cpp canbus::Write.
              I don’t really understand the tx_frame approach at all,
              and why the frame is just not passed on the queue.</div>
            <div><br class="">
            </div>
          </div>
          <blockquote style="margin: 0 0 0 40px; border: none; padding:
            0px;" class="">
            <div>
              <div><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">// CAN Frame</span></font></div>
              <div><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">// Note: Take care changing this structure,
                    as it is a union with</span></font></div>
              <div><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">// CAN_log_message_t and position of
                    'origin' is fixed.</span></font></div>
              <div><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">struct CAN_frame_t</span></font></div>
              <div><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">  {</span></font></div>
              <div><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">  canbus*     origin;                   //
                    Origin of the frame</span></font></div>
              <div><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">  CanFrameCallback * callback;          //
                    Frame-specific callback. Is called when this frame
                    is successfully sent (or sending failed)</span></font></div>
              <div><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">  CAN_FIR_t   FIR;                      //
                    Frame information record</span></font></div>
              <div><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">  uint32_t    MsgID;                    //
                    Message ID</span></font></div>
              <div><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">  union</span></font></div>
              <div><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">    {</span></font></div>
              <div><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">    uint8_t   u8[8];                    //
                    Payload byte access</span></font></div>
              <div><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">    uint32_t  u32[2];                   //
                    Payload u32 access (Att: little endian!)</span></font></div>
              <div><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">    uint64_t  u64;                      //
                    Payload u64 access (Att: little endian!)</span></font></div>
              <div><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">    } data;</span></font></div>
              <div><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class=""><br class="">
                  </span></font></div>
              <div><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">  esp_err_t Write(canbus* bus=NULL,
                    TickType_t maxqueuewait=0);  // bus: NULL=origin</span></font></div>
              <div><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class="">  };</span></font></div>
              <div><font class="" face="Andale Mono"><span
                    style="font-style: normal; font-size: 14px;"
                    class=""><br class="">
                  </span></font></div>
              <div>
                <div><font class="" face="Andale Mono"><span
                      style="font-size: 14px;" class="">// CAN message<br
                        class="">
                      typedef struct<br class="">
                        {<br class="">
                        CAN_queue_type_t type;<br class="">
                        union<br class="">
                          {<br class="">
                          CAN_frame_t frame;  // CAN_frame<br class="">
                          canbus* bus;<br class="">
                          } body;<br class="">
                        } CAN_queue_msg_t;</span></font></div>
              </div>
            </div>
          </blockquote>
          <div class="">
            <div><br class="">
            </div>
            <div>This approach seems to date back to the swcan support
              merge (f94ae5a1b).</div>
            <div><br class="">
            </div>
            <div>Should we swap around, and set the msg.body.bus after
              msg.body.frame? Or am I missing something…</div>
            <div><br class="">
            </div>
            <div>Regards, Mark.</div>
            <div><br class="">
              <blockquote type="cite" class="">
                <div class="">On 12 Dec 2019, at 2:29 AM, 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="">
                  <meta http-equiv="Content-Type" content="text/html;
                    charset=UTF-8" class="">
                  <div class=""> Mark,<br class="">
                    <br class="">
                    good example why not to use addr2line: I think that
                    result is wrong. a2l uses gdb which gives:<br
                      class="">
                    <br class="">
                    <tt class=""><a class="moz-txt-link-abbreviated"
href="mailto:balzer@leela:~/esp/Open-Vehicle-Monitoring-System-3/vehicle/OVMS.V3"
                        moz-do-not-send="true">balzer@leela:~/esp/Open-Vehicle-Monitoring-System-3/vehicle/OVMS.V3</a>>
                      a2l tmp/3.2.007.ovms3.elf 0x400d5e4c:0x3ffc5c40
                      0x7ffffffd:0x3ffc5c90<br class="">
                      Using elf file: tmp/3.2.007.ovms3.elf<br class="">
                      0x400d5e4c is in CAN_rxtask(void*)
(/home/openvehicles/build/Open-Vehicle-Monitoring-System-3.1/vehicle/OVMS.V3/components/can/src/can.cpp:730).<br
                        class="">
                      725                 
                      me->IncomingFrame(&msg.body.frame);<br
                        class="">
                      726                } while (loop);<br class="">
                      727              break;<br class="">
                      728              }<br class="">
                      729            case CAN_txcallback:<br class="">
                      730             
                      msg.body.bus->TxCallback(&msg.body.frame,
                      true);<br class="">
                      731              break;<br class="">
                      732            case CAN_txfailedcallback:<br
                        class="">
                      733             
                      msg.body.bus->TxCallback(&msg.body.frame,
                      false);<br class="">
                      734             
                      msg.body.bus->LogStatus(CAN_LogStatus_Error);<br
                        class="">
                    </tt><tt class=""><br class="">
                    </tt>…and that actually makes sense and matches the
                    register dump.<br class="">
                    <br class="">
                    If I read the gdb disassembly correctly, A10 =
                    msg.body.bus, so Greg's got a CAN_txcallback msg
                    without a bus.<br class="">
                    <br class="">
                    Hardening the rxtask against null here would
                    probably avoid the crash, but I don't see yet how
                    that could be possible.<br class="">
                    Both esp32can and mcp2515 set the bus field to their
                    object addresses, which cannot be null.<br class="">
                    <br class="">
                    Regards,<br class="">
                    Michael<br class="">
                    <br class="">
                    <br class="">
                    <div class="moz-cite-prefix">Am 11.12.19 um 13:45
                      schrieb Mark Webb-Johnson:<br class="">
                    </div>
                    <blockquote type="cite"
                      cite="mid:1BF79214-A026-4AD0-97D4-5C845FBB0328@webb-johnson.net"
                      class="">
                      <meta http-equiv="Content-Type"
                        content="text/html; charset=UTF-8" class="">
                      Can’t get a2l working at the moment. The addr2line
                      gives:
                      <div class=""><br class="">
                      </div>
                      <blockquote style="margin: 0 0 0 40px; border:
                        none; padding: 0px;" class="">
                        <div class="">
                          <div class="">addr2line -e 3.2.007.ovms3.elf
                            0x400d5e4c:0x3ffc5c40 0x7ffffffd:0x3ffc5c90</div>
                          <div class="">/home/openvehicles/build/Open-Vehicle-Monitoring-System-3.1/vehicle/OVMS.V3/components/can/src/can.cpp:551</div>
                        </div>
                      </blockquote>
                      <div class="">
                        <div class="">
                          <div class=""><br class="">
                          </div>
                          <div class="">That is:</div>
                          <div class=""><br class="">
                          </div>
                        </div>
                      </div>
                      <blockquote style="margin: 0 0 0 40px; border:
                        none; padding: 0px;" class="">
                        <div class="">
                          <div class="">
                            <div class="">
                              <div class="">void
                                canbus::LogInfo(CAN_log_type_t type,
                                const char* text)</div>
                              <div class="">  {</div>
                              <div class="">  MyCan.LogInfo(this, type,
                                text);    <—— HERE</div>
                              <div class="">  }</div>
                            </div>
                          </div>
                        </div>
                      </blockquote>
                      <div class="">
                        <div class="">
                          <div class=""><br class="">
                          </div>
                          <div class="">ELF is at:</div>
                          <div class=""><br class="">
                          </div>
                        </div>
                      </div>
                      <blockquote style="margin: 0 0 0 40px; border:
                        none; padding: 0px;" class="">
                        <div class="">
                          <div class="">
                            <div class=""><a
href="http://api.openvehicles.com/firmware/ota/v3.2/main/3.2.007.ovms3.elf"
                                class="" moz-do-not-send="true">http://api.openvehicles.com/firmware/ota/v3.2/main/3.2.007.ovms3.elf</a></div>
                          </div>
                        </div>
                      </blockquote>
                      <div class="">
                        <div class="">
                          <div class=""><br class="">
                          </div>
                          <div class="">Regards, Mark.</div>
                          <div class=""><br class="">
                            <blockquote type="cite" class="">
                              <div class="">On 11 Dec 2019, at 5:20 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="">
                                <meta http-equiv="Content-Type"
                                  content="text/html; charset=UTF-8"
                                  class="">
                                <div class="">
                                  <div class="moz-cite-prefix">Mark,<br
                                      class="">
                                    <br class="">
                                    Greg uses your build, the crash
                                    point seems to be consistent, can
                                    you post the a2l on this?<br
                                      class="">
                                    <br class="">
                                    Regards,<br class="">
                                    Michael<br class="">
                                    <br class="">
                                    PS: Greg, would you mind switching
                                    to EAP to beta test future releases?<br
                                      class="">
                                    <br class="">
                                    <br class="">
                                    Am 11.12.19 um 04:33 schrieb Greg
                                    D.:<br class="">
                                  </div>
                                  <blockquote type="cite"
                                    cite="mid:48cd3f20-409f-d201-640a-31b6e7788e92@gmail.com"
                                    class="">
                                    <pre class="moz-quote-pre" wrap="">Hi folks,

Well, the module updated to 3.2.007 last night.  I just checked on it,
and it appears that it didn't exactly survive.  Crashed while running
the autoconfig script.  Log with two cycles attached.

I tried renaming the /store/events directory to /store/was_events since
it seems like Duktape was getting in the way, but that didn't resolve
the crash.  I manually enabled wifi so I could manage the module, and
moved it back to 3.2.005 from the other partition.  Seems stable again.

The car is going into the Service Center tomorrow (the perennial issue
with 1146 alerts), so I need to have the module stable so that I can
keep an eye on it.  Going to leave it on 3.2.005 for now, unless someone
has a quick fix in the next few hours...

Otherwise, any ideas for troubleshooting after I get the car back back
(hopefully end of day)?

Greg

</pre>
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                                  <br class="">
                                  <pre class="moz-signature" cols="144">-- 
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
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