Multiple rtems_io_register_name

[Cedric Aubert]

Thanks a lot for your answer and this will be very
usefull for me. :-)

Another related question, is it mandatory to the
symlink to be in the /dev directory ?
Example :

symlink ("/dev/porta", "/term0")

Thanks a lot

Cedric

--- Chris Johns <cjohns at cybertec.com.au> wrote:
> Cedric Aubert wrote:
> > 
> > I want to known if it's possible and a correct
> usage
> > to do multiple rtems_io_register_name for have
> more
> > device with same major minor couple for serial
> port.
> > 
> > Example, to have /dev/console and /dev/ttyS0 and
> > to the same physical serial port. If it's exist a
> more
> > beuatiful manner to do a link like this, thank to
> tell
> > me.
> > 
> 
> For our boards we create devices with names such as
> /dev/porta 
> /dev/portb, etc that relate to the connector
> documentation and then link 
> them with a 'symlink' to a logical device name, ie
> /dev/ttyS0, ie:
> 
>    /dev/ttyS0 -> /dev/porta
> 
> The code is:
> 
>    status = rtems_io_register_name ("/dev/porta", 4,
> 0);
>    if (status != RTEMS_SUCCESSFUL)
>      rtems_fatal_error_occurred (status);
> 
>    status = rtems_io_register_name ("/dev/portb", 4,
> 1);
>    if (status != RTEMS_SUCCESSFUL)
>      rtems_fatal_error_occurred (status);
> 
>    if (symlink ("/dev/porta", "/dev/ttyS0") < 0)
>      printf (" sfp-core target init: cannot make
> symlink to porta, %s",
>              strerror (errno));
> 
>    if (symlink ("/dev/portb", "/dev/ttyS1") < 0)
>      printf (" sfp-core target init: cannot make
> symlink to portb, %s",
>              strerror (errno));
> 
> -- 
>   Chris Johns, cjohns at cybertec.com.au
> 


=====
AUBERT Cedric
SDEL Controle Commande
rue Nungesser & Coli
44860 St Aignan de Grand Lieu

E-mail : cedric_aubert at yahoo.fr
Http : http://www.controle-commande.sdel.fr/

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