Re: Bit rate configuration of PEAK USB devices

[Kurt Van Dijck <kurt.van.dijck-/BeEPy95v10@public.gmane.org>]

On Thu, Nov 17, 2011 at 05:14:33PM +0100, Oliver Hartkopp wrote:
> On 17.11.2011 12:24, Kurt Van Dijck wrote:
> 
> > On Thu, Nov 17, 2011 at 07:49:43AM +0100, Heinz-Jürgen Oertel wrote:
> >>
> >> Danke Oliver,
> >>
> >> for now I decided to use something like
> >>
> >> system("echo \"i 0x4914 e\" > /dev/pcan0");
> >>
> >> Unfortunately at the moment I have  no idea how to determine if I'm just talking to an Peak or an EMS interface  to select the method of setting the bit rate.
> > 
> > Maybe
> > 
> > $ ip -d link show can0
> > 
> > will show differently?
> 
> 
> No.
> 
> The PEAK driver does not use the candev framework (drivers/net/can/dev.c).
> Therefore you won't see anything beyond up/down state and tx_queue_len, etc.
> Not bitrate settings :-(
My idea was to use this 'lack of information' to auto-decide if it's an EMS or PEAK
interface. But Heinz-Jürgen already pointed out that using some /proc file, you
can also see if a device is a PEAK device.

Kurt
> 
> Regards,
> Oliver
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