Re: Resources for Linux SocketCAN

>> http://www.can-wiki.info/can4linux/man/index.html
I have read this link before, As per this link Can4linux for version 3.4.6
supports many devices.
But only point which i did not get is, udev will create nodes for these
multiple devices which we have configured in kernel. Or for every single
device there will be maximum 10 nodes...... ??????  :--

Since version 3.4.6 can4linux assumes that your distribution uses *udev* to
have the device `/dev/can[0-9]' automatically created. It is usually
necessary to change the device access rights set by*udev* . With the Fedora
Core >= 4 or SuSE/novell you can do


>>  Your knowledge needs to be updated :-)

Means only one application can control underlying hardware at a time.

What i mean to say here is suppose there is one -- MCP2515 device connected
to controller.
Now is it possible for two process running on Linux environment to Open
same driver & send & receive the messages through same device ?

http://de.wikipedia.org/wiki/Can4linux

 fd = open ( "/ dev/can0" , O_RDWR ) ;



http://docs.blackfin.uclinux.org/doku.php?id=linux-kernel:drivers:can_module
There are two frameworks for CAN drivers in Linux now. CAN4LINUX provides
read/write/ioctl interfaces based on the framework of Linux character
device drivers, butSocketCAN <http://en.wikipedia.org/wiki/SocketCAN> provides
an API for CAN devices based on BSD sockets.


Regards,

Dinesh

On Thu, Jan 31, 2013 at 7:00 PM, Heinz-Jürgen Oertel <[email protected]> wrote:

> Am Donnerstag, 31. Januar 2013, 18:36:47 schrieb Dinesh Guleria:
> > What i knows .
> >
> > Socket CAN :--
> > Allows many application to send & receive packets from same device
> > simultaneously.
> >
> > can4linux :--
> > It can be used as an character driver. Means only one application can
> > control underlying hardware at a time.
> >
> > //Dinesh
>
> Your knowledge needs to be updated :-)
> If you like, look at:
> http://www.can-wiki.info/can4linux/man/index.html
>
> Regards
>      Heinz
> --
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