Hi,

The first time I tested it I started logging from the Web UI and stopped it from there too and the next time I tested it I did it from the shell, running status commands to make sure it had started and stopped.

vfs ls /sd gives, 
0 30-Nov-1979 00:00 log 0 30-Nov-1979 00:00 0 30-Nov-1979 00:00 0 30-Nov-1979 00:00 0 30-Nov-1979 00:00 ! 0 30-Nov-1979 00:00 ) 0 30-Nov-1979 00:00 1 0 30-Nov-1979 00:00 9 0 30-Nov-1979 00:00 A 0 30-Nov-1979 00:00 i 0 30-Nov-1979 00:00 Q 0 30-Nov-1979 00:00 y 0 30-Nov-1979 00:00 a 0 30-Nov-1979 00:00 i 0 30-Nov-1979 00:00 ���r 0 30-Nov-1979 00:00 y


which I noticed on the "Editor", and the reason I wanted to format the card in the OVMS.

can can1 status
CAN: can1 Mode: Active Speed: 500000 DBC: none Interrupts: 214034 Rx pkt: 120472 Rx ovrflw: 0 Tx pkt: 90774 Tx delays: 0 Tx ovrflw: 0 Tx fails: 254 Err flags: 0x008040d9 Rx err: 0 Tx err: 128 Rx invalid: 0 Wdg Resets: 0 Wdg Timer: 2 sec(s) Err Resets: 0
can can2 status
CAN: can2 Mode: Listen Speed: 500000 DBC: none Interrupts: 0 Rx pkt: 0 Rx ovrflw: 0 Tx pkt: 0 Tx delays: 0 Tx ovrflw: 0 Tx fails: 0 Err flags: 0x00000000 Rx err: 0 Tx err: 0 Rx invalid: 0 Wdg Resets: 91 Wdg Timer: 3 sec(s) Err Resets: 0
The command to start logging is the all CAN messages command from the guide
can log start vfs crtd /sd/can.crtd 

and it returns
CAN logging to VFS active: Type:vfs Format:crtd(discard) Vehicle:KN Path:/sd/can.cr

also
can log status
#2: open Type:vfs Format:crtd(discard) Vehicle:KN Path:/sd/can.crtd Messages:214 Dropped:0 Filtered:0 Rate:0.0% /sd/can.crtd: running Messages:214 Discarded:0 Dropped:0 Filtered:0 Rate:0.0%


On Tue, Feb 7, 2023, 02:08 Mark Webb-Johnson <mark@webb-johnson.net> wrote:
First guess is that you have to ‘can log stop’ to close the logging file before you will be able to see the content.

If that is not it, please provide details of the logging commands you are typing, and what ‘vfs ls /sd’, ‘can can1 status’, ‘can can2 status’, show.

Regards, Mark.

P.S. If you have a modern OVMS module, I also suggest you double-check the sdcard maxfreq.khz setting to optimise performance:


On 7 Feb 2023, at 4:08 AM, Christos Oscar Kambiselis <ckambiselis@gmail.com> wrote:

Hi,
Has anyone had any problems with CAN bus logging? 

I have a 32GB SD card installed and "SD status" gives:

SD CARD is inserted
Status: available
Name: SD32G
Size:  30419 MB
Free:  29767 MB

Card type: SDHC/SDXC
Max speed: 25000 kHz
Capacity: 30436 MB
CSD: ver=1; sector_size=512; capacity=62333952 read_bl_len=9
SCR: sd_spec=2; bus_width=5

I have setup CAN1 and 2 to "listen" and started the logging like it's mentioned in the user guide, checked the status, I stopped it some time later, and when I go to open it from the Web UI it is empty, also tried from the Editor and it is also empty, removing the card is a bit tricky since the hardware is pretty tucked away in the console. I searched the manual for a format command but can't find anything.

I do get messages and readings on the OVMS Android app, so at least the OBD CAN is fine.

Oscar
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