<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=""><div class=""><br class=""></div><div class="">For those of us working on vehicle support, I am concentrating on the last pieces for Tesla Roadster, ongoing work on Tesla Model S, and helping out Chris (in AU) to try to get Volt/Ampera ported (he has the car, I don’t). We have a lot of users waiting for Volt/Ampera support.</div><div class=""><br class=""></div><div class="">For all of this, I’m trying to extend the RE tools and CAN frameworks to allow for OVMS to be used for CAN bus analysis and simulation. It is really coming together nicely, and it looks like the system is powerful enough to handle this admirably. I’m trying hard not to plug a USB-CAN adaptor into my car, or use any other desktop tools. This should bring the barrier to entry right down for new vehicle support.</div><div class=""><br class=""></div><div class="">A few examples…</div><div class=""><br class=""></div><div class="">Using ‘can rx’ to simulate an incoming CAN bus message and see what happens to metrics:</div><div class=""><br class=""></div><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;" class=""><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;">OVMS# metrics trace on</span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;">Metric tracing is now on</span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;"><br class=""></span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;">OVMS# vehicle module VA</span></font></div><div class=""><span class="" style="font-size: 14px;"><font face="Andale Mono" class="">I (26522) v-voltampera: Volt/Ampera vehicle module</font></span></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;"><br class=""></span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;">I (26522) metrics: Modified metric v.type: VA</span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;">I (26582) metrics: Modified metric v.e.parktime: 26Sec</span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;">I (27582) metrics: Modified metric v.e.parktime: 27Sec</span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;">I (28582) metrics: Modified metric v.e.parktime: 28Sec</span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;"><br class=""></span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;">OVMS# can can1 rx standard 135 01</span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;">I (49462) metrics: Modified metric v.e.on: yes</span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;">I (49462) metrics: Modified metric v.e.awake: yes</span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;">I (49462) metrics: Modified metric v.e.handbrake: no</span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;">I (49582) metrics: Modified metric v.e.parktime: 0Sec</span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;"><br class=""></span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;">OVMS# can can1 rx standard 4e1 42 55 31 30 32 36 38 39</span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;">OVMS# can can1 rx standard 514 47 31 52 44 36 45 34 36</span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;">I (94402) metrics: Modified metric v.vin: 1G1RD6E46BU102689</span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;"><br class=""></span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;">OVMS# can can1 rx standard 135 00</span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;">I (103342) metrics: Modified metric v.e.on: no</span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;">I (103342) metrics: Modified metric v.e.awake: no</span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;">I (103342) metrics: Modified metric v.e.handbrake: yes</span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;">I (103582) metrics: Modified metric v.e.parktime: 1Sec</span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;">I (104582) metrics: Modified metric v.e.parktime: 2Sec</span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;">I (105582) metrics: Modified metric v.e.parktime: 3Sec</span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;">I (106582) metrics: Modified metric v.e.parktime: 4Sec</span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;">I (107582) metrics: Modified metric v.e.parktime: 5Sec</span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;">I (108582) metrics: Modified metric v.e.parktime: 6Sec</span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;">I (109582) metrics: Modified metric v.e.parktime: 7Sec</span></font></div><div class=""><font class="" face="Andale Mono"><span class="" style="font-size: 14px;">I (110582) metrics: Modified metric v.e.parktime: 8Sec</span></font></div></blockquote><div class=""><br class=""></div><div class="">Showing CAN message changes, and discovering new messages (or bytes within that were not previously changing but now are):</div><div class=""><br class=""></div><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;" class=""><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">OVMS# re start</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">OVMS# re mode analyse</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">Now running in analyse mode</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class=""><br class=""></span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">OVMS# can can1 rx standard 100 01 02 03 04</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">OVMS# can can1 rx standard 101 01 02 03 04</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">OVMS# can can1 rx standard 102 01 02 03 04</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class=""><br class=""></span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">OVMS# re discover list changed</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">key records ms last</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">can1/100 1 8000 <font color="#ff2600" class="">01 02 03 04</font> | <font color="#ff2600" class="">....</font></span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">can1/101 1 8000 <font color="#ff2600" class="">01 02 03 04</font> | <font color="#ff2600" class="">....</font></span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">can1/102 1 8000 <font color="#ff2600" class="">01 02 03 04</font> | <font color="#ff2600" class="">....</font></span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class=""><br class=""></span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">OVMS# re discover clear changed</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">Cleared all change flags</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class=""><br class=""></span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">OVMS# can can1 rx standard 102 01 02 13 04</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">OVMS# re discover list changed</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">key records ms last</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">can1/102 2 15500 01 02 <font color="#ff2600" class="">13</font> 04 | ..<font color="#ff2600" class="">.</font>.</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class=""><br class=""></span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">OVMS# re mode discover</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">Now running in discover mode</span></font></div><div class=""><span style="font-family: "Andale Mono"; font-size: 14px;" class=""><br class=""></span></div><div class=""><span style="font-family: "Andale Mono"; font-size: 14px;" class="">OVMS# can can1 rx standard 102 01 02 13 04</span></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">OVMS# re discover list discovered</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">key records ms last</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class=""><br class=""></span></font></div><div class=""><span style="font-family: "Andale Mono"; font-size: 14px;" class="">OVMS# can can1 rx standard 102 01 12 13 04</span></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">OVMS# re discover list discovered</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">key records ms last</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">can1/102 4 14500 01 <font color="#008f00" class="">12</font> <font color="#ff2600" class="">13</font> 04 | .<font color="#008f00" class="">.</font><font color="#ff2600" class="">.</font>.</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class=""><br class=""></span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">OVMS# can can1 rx standard 110 01 02 03 04</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">OVMS# re discover list discovered</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">key records ms last</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">can1/102 4 17500 01 <font color="#008f00" class="">12</font> <font color="#ff2600" class="">13</font> 04 | .<font color="#008f00" class="">.</font><font color="#ff2600" class="">.</font>.</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">can1/110 1 70000 <font color="#008f00" class="">01 02 03 04</font> | <font color="#008f00" class="">....</font></span></font></div></blockquote><div class=""><br class=""></div><div class="">A CRTD format can bus dump:</div><div class=""><br class=""></div><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;" class=""><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">I (372613) re: Log service connection from 10.8.8.83<br class="">OVMS# can can1 rx standard 120 01 02 03 04<br class="">OVMS# can can1 rx standard 121 01 02 03 04<br class="">OVMS# can can1 rx standard 121 DE AD BE AT<br class="">I (466333) re: Log service disconnection from 10.8.8.83</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class=""><br class=""></span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">$ telnet devbench.local 3000</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">Connected to devbench.local.</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">1524105901.244120 1R11 120 01 02 03 04</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">1524105905.794094 1R11 121 01 02 03 04</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">1524105915.194145 1R11 121 de ad be at</span></font></div></blockquote><div class=""><br class=""></div><div class="">The TODO list for this is huge, so it will progress as I have time to work on it (and as I hit a requirement for each unfinished part). For example, simulating CAN bus traffic (replaying) would be nice (something like ‘<font face="Andale Mono" class=""><span style="font-size: 14px;" class="">$ cat mylogfile.crtd | nc devbench.local 3000</span></font>’) - and that is something I need now, so will probably come next (and is pretty trivial - just pickup on data coming in the tcp/3000, decode it, and either simulate reception or transmit it on the actual car bus).</div><div class=""><br class=""></div><div class="">The whole decoding/encoding thing (where we use DBC or whatever to say key X byte Y is converted to v.bat.soc using this formula) is of course the holy grain of this; and is built upon all the foundation I’m laying now. The end goal remains for vehicle modules with just a DBC (or whatever) and no actual code.</div><div class=""><br class=""></div><div class="">It is all command line at the moment, but this could be very very cool using Michael’s web framework (particularly with real-time websocket updates).</div><div class=""><br class=""></div><div class="">Regards, Mark.</div><div class=""><br class=""></div></body></html>