[Ovmsdev] Need some help on CAN errors

Thu Sep 17 23:06:17 HKT 2020

Hi all

I'm trying to make the Lock/Unlock function work for the VW e-UP on
T26A.

I found the right messages and got it working once, not knowing why.

What I need to do is sending 22 messages in a row. My code for that is:

        // Send 0x291 messages

        for (k=0;k<15;k++)
        {
           data[0] = 0x8A;
           data[1] = 0xAA;
           data[2] = 0x00;
           data[3] = 0x00;
           data[4] = 0x00;
           data[5] = 0x46;
           data[6] = 0x03;
           data[7] = 0x00;
           if (vwup_enable_write && !dev_mode)
            comfBus->WriteStandard(0x291, length, data);

        }

        for (k=0;k<2;k++)
        {
           data[0] = 0x00;
           data[1] = 0xAA;
           data[2] = 0x00;
           data[3] = 0x00;
           data[4] = 0x00;
           data[5] = 0x46;
           data[6] = 0x03;
           data[7] = 0x00;
           if (vwup_enable_write && !dev_mode)
            comfBus->WriteStandard(0x291, length, data);

        }

        for (k=0;k<5;k++)
        {
           data[0] = 0x00;
           data[1] = 0x00;
           data[2] = 0x00;
           data[3] = 0x00;
           data[4] = 0x00;
           data[5] = 0x46;
           data[6] = 0x03;
           data[7] = 0x00;
           if (vwup_enable_write && !dev_mode)
            comfBus->WriteStandard(0x291, length, data);

        }

This is what I get in the logging:

V (96275) canlog-monitor: 1600352233.355713 3T11 291 8a aa 00 00 00 46
03 00
V (96275) canlog-monitor: 1600352233.357066 3CER TX_Queue T11 291 8a aa
00 00 00 46 03 00
V (96275) canlog-monitor: 1600352233.357673 3T11 291 8a aa 00 00 00 46
03 00
V (96275) canlog-monitor: 1600352233.358156 3CER TX_Queue T11 291 8a aa
00 00 00 46 03 00
E (96285) mcp2515: AsynchronousInterruptHandler: error while sending
frame. msgId 0x291
V (96285) canlog-monitor: 1600352233.364241 3T11 291 8a aa 00 00 00 46
03 00
E (96285) can: can3: intr=8 rxpkt=0 txpkt=4 errflags=0x85050101 rxerr=0
txerr=107 rxovr=0 txovr=0 txdelay=6 wdgreset=0 errreset=0
V (96285) canlog-monitor: 1600352233.364745 3CER TX_Queue T11 291 8a aa
00 00 00 46 03 00
W (96285) mcp2515: can3 EFLG: TX_Err_Warn EWARN 
V (96285) canlog-monitor: 1600352233.364965 3CER TX_Queue T11 291 8a aa
00 00 00 46 03 00
E (96285) can: can3: intr=8 rxpkt=1 txpkt=5 errflags=0x4050104 rxerr=0
txerr=107 rxovr=0 txovr=0 txdelay=6 wdgreset=0 errreset=0
E (96285) canlog-monitor: 1600352233.366305 3CER Error intr=8 rxpkt=0
txpkt=4 errflags=0x85050101 rxerr=0 txerr=107 rxovr=0 txovr=0 txdelay=6
wdgreset=0 errreset=0
V (96285) canlog-monitor: 1600352233.367035 3R11 291 8a aa 00 00 00 46
03 00
V (96285) canlog-monitor: 1600352233.367620 3T11 291 8a aa 00 00 00 46
03 00
V (96295) canlog-monitor: 1600352233.367647 3CER TX_Fail T11 291 8a aa
00 00 00 46 03 00
E (96295) canlog-monitor: 1600352233.368350 3CER Error intr=8 rxpkt=1
txpkt=5 errflags=0x4050104 rxerr=0 txerr=107 rxovr=0 txovr=0 txdelay=6
wdgreset=0 errreset=0
V (96295) canlog-monitor: 1600352233.368403 3T11 291 8a aa 00 00 00 46
03 00
V (96295) canlog-monitor: 1600352233.369064 3T11 291 8a aa 00 00 00 46
03 00
V (96295) canlog-monitor: 1600352233.370243 3R11 470 40 00 00 00 00 00
00 14
V (96295) canlog-monitor: 1600352233.371859 3CER TX_Queue T11 291 8a aa
00 00 00 46 03 00
V (96295) canlog-monitor: 1600352233.374239 3T11 291 8a aa 00 00 00 46
03 00
V (96295) canlog-monitor: 1600352233.374827 3CER TX_Queue T11 291 8a aa
00 00 00 46 03 00
V (96295) canlog-monitor: 1600352233.375507 3T11 291 8a aa 00 00 00 46
03 00
V (96295) canlog-monitor: 1600352233.375976 3CER TX_Queue T11 291 8a aa
00 00 00 46 03 00
V (96305) canlog-monitor: 1600352233.384241 3T11 291 8a aa 00 00 00 46
03 00
V (96305) canlog-monitor: 1600352233.384985 3CER TX_Queue T11 291 8a aa
00 00 00 46 03 00
V (96305) canlog-monitor: 1600352233.385602 3CER TX_Queue T11 291 8a aa
00 00 00 46 03 00
E (96305) can: can3: intr=14 rxpkt=2 txpkt=10 errflags=0x27450501
rxerr=0 txerr=100 rxovr=0 txovr=0 txdelay=12 wdgreset=0 errreset=0
V (96305) canlog-monitor: 1600352233.386140 3CER TX_Queue T11 291 8a aa
00 00 00 46 03 00
W (96305) mcp2515: can3 EFLG: TX_Err_Warn EWARN 
E (96305) canlog-monitor: 1600352233.387010 3CER Error intr=14 rxpkt=2
txpkt=10 errflags=0x27450501 rxerr=0 txerr=100 rxovr=0 txovr=0
txdelay=12 wdgreset=0 errreset=0
V (96305) canlog-monitor: 1600352233.387820 3R11 291 8a aa 00 00 00 46
03 00
V (96315) canlog-monitor: 1600352233.388508 3R11 291 8a aa 00 00 00 46
03 00
V (96315) canlog-monitor: 1600352233.388548 3T11 291 8a aa 00 00 00 46
03 00
V (96315) canlog-monitor: 1600352233.388586 3T11 291 8a aa 00 00 00 46
03 00
V (96315) canlog-monitor: 1600352233.390509 3T11 291 8a aa 00 00 00 46
03 00
V (96315) canlog-monitor: 1600352233.391040 3R11 359 ff 89 ff 00 10 6b
80 00
V (96315) canlog-monitor: 1600352233.392246 3T11 291 8a aa 00 00 00 46
03 00
V (96315) canlog-monitor: 1600352233.392765 3CER TX_Queue T11 291 8a aa
00 00 00 46 03 00
V (96315) canlog-monitor: 1600352233.394239 3T11 291 8a aa 00 00 00 46
03 00
V (96315) canlog-monitor: 1600352233.394816 3CER TX_Queue T11 291 00 aa
00 00 00 46 03 00
V (96315) canlog-monitor: 1600352233.395680 3T11 291 8a aa 00 00 00 46
03 00
V (96315) canlog-monitor: 1600352233.396153 3CER TX_Queue T11 291 00 aa
00 00 00 46 03 00
V (96325) canlog-monitor: 1600352233.404239 3T11 291 00 aa 00 00 00 46
03 00
V (96325) canlog-monitor: 1600352233.404538 3CER TX_Queue T11 291 00 00
00 00 00 46 03 00
V (96325) canlog-monitor: 1600352233.404753 3CER TX_Queue T11 291 00 00
00 00 00 46 03 00
V (96325) canlog-monitor: 1600352233.404791 3R11 291 00 00 00 00 00 46
03 00
V (96325) canlog-monitor: 1600352233.405089 3R11 457 00 47 00
V (96325) canlog-monitor: 1600352233.405126 3T11 291 00 00 00 00 00 46
03 00
V (96325) canlog-monitor: 1600352233.406203 3T11 291 00 00 00 00 00 46
03 00
V (96325) canlog-monitor: 1600352233.407538 3T11 291 00 00 00 00 00 46
03 00
V (96325) canlog-monitor: 1600352233.408701 3CER TX_Queue T11 291 00 00
00 00 00 46 03 00
V (96335) canlog-monitor: 1600352233.414259 3T11 291 00 00 00 00 00 46
03 00
E (96335) can: can3: intr=25 rxpkt=7 txpkt=21 errflags=0x27400501
rxerr=0 txerr=90 rxovr=0 txovr=0 txdelay=18 wdgreset=0 errreset=0
E (96335) canlog-monitor: 1600352233.416398 3CER Error intr=25 rxpkt=7
txpkt=21 errflags=0x27400501 rxerr=0 txerr=90 rxovr=0 txovr=0
txdelay=18 wdgreset=0 errreset=0
V (96335) canlog-monitor: 1600352233.416729 3R11 320 01 00 00 01 00 02
00 80
V (96335) canlog-monitor: 1600352233.417216 3R11 575 00 00 00 00
V (96335) canlog-monitor: 1600352233.417255 3T11 291 00 00 00 00 00 46
03 00
V (96335) canlog-monitor: 1600352233.417283 3T11 291 00 00 00 00 00 46
03 00
I (96335) ovms-server-v2: Send MP-0 c22,0

I see some weird stuff here ...

The TX that come to the bus (3T11) we see 15 times the first messages
(that is right), one time the second messages (wrong, should be two)
and 6 times the third messages (wrong, should be 5).

On the RX side (3R11) we only see 3 times the first messages, none of
the second and one of the third.

To unlock the doors we need on 3R11 (???) 15 times first, 5 times
second and two times third.

I don't understand enough from the can communication within OVMS to
solve this on my own. Could someone help me out here?

Thanx!

Regards

Chris