Re: candump error flags

[Andri Yngvason <andri.yngvason@marel.com>]

On Fri, Nov 07, 2014 at 09:57:41AM -0400, Paul Lever wrote:
> I'm trying to use the candump -e and -d options to catch errors. I
> know that frames are being dropped, as I can see missing packets in
> known sequences, yet I never see anything printed from candump
> indicating any errors or dropped packets. Is there additional steps
> needed to get output from -e/-d options? This is on a Beaglebone Black
> platform.
> My cmd line is:
> candump -t a -e -d -r 16000 can0 > /media/testdata.raw&
>

Hi Paul,

Error handling is different between platforms. On some platforms you need to
enable berr-reporting to get errors. Some platforms support a limited set of
errors (or even no errors at all?)

You can grep for "CAN_ERR" in the driver for your platform to find out which
errors are implemented.

--
Cheers,
Andri