Two UARTS

Aitor.Viana.Sanchez at esa.int Aitor.Viana.Sanchez at esa.int
Fri Aug 31 09:45:19 CDT 2007


OK, got it.

I called previously to rtems_filesystem_initialize(), and this routine 
provoked the error after.
The question I have now is, Can we not to have the IMFS and use also the 
console and console_b in that way simultaneously?



Cheers,

        Aitor

rtems-users-bounces+aitor.viana.sanchez=esa.int at rtems.org wrote on 
31/08/2007 16:28:57:

> Joel Sherrill <joel.sherrill at oarcorp.com> wrote on 31/08/2007 16:24:38:
> 
> > Aitor.Viana.Sanchez at esa.int wrote:
> > >
> > > The same behaviour happens also if I change the "/dev/console_b" for
> > > "/dev/console" device in the fopen call.
> > >
> > > There is also something strange: If the "r+" option is set, "no such
> > > device" error is raised but if "w+" is set instead, no error is 
raised
> > > but the fprintf call does not printf anything anyway.
> > Break at _open_r() and step through.  fopen() doesn't fail in this 
way. 
> 
> Yes. My fault...in this mode the fopen call does not fail...is not 
> strange at all ;)
> 
> > >
> > > In the RTEMS configuration file the option
> > >
> > >         #define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
> > >
> > > is set as well.
> > >
> > So the driver is there. Good. 
> Yep. 
> 
> I will try to figure out why I cannot write on console_b 
> 
> Cheers, 
>         Aitor 
> 
> > >
> > > Aitor
> > >
> > >
> > >
> > > *Joel Sherrill <joel.sherrill at oarcorp.com>*
> > > Sent by: rtems-users-bounces+aitor.viana.sanchez=esa.int at rtems.org
> > >
> > > 31/08/2007 16:13
> > >
> > >
> > > To
> > >  Aitor.Viana.Sanchez at esa.int
> > > cc
> > >  RTEMS Users <rtems-users at rtems.org>
> > > Subject
> > >  Re: Two UARTS
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > Aitor.Viana.Sanchez at esa.int wrote:
> > > >
> > > > OK,
> > > >
> > > > I already tried with this code.
> > > >
> > > >        fp = fopen("/dev/console_b", "r+");
> > > >         if(fp == NULL)
> > > >             std::cout << strerror(errno) << std::endl;
> > > >
> > > > ....
> > > >
> > > >     fprintf(fp, string);
> > > >     fflush(fp);
> > > >
> > > > where string is a char* passed as an argument to the routine
> > > > containing the fprintf.
> > > >
> > > > The problem is that the fopen routine returns "No such file or
> > > > directory" error.
> > > >
> > > > In the RTEMS configuration file this options are specified
> > > >
> > > > #define CONFIGURE_LIBIO_MAXIMUM_FILE_DESCRIPTORS    10
> > > > #define CONFIGURE_NUMBER_OF_TERMIOS_PORTS           2
> > > > #define CONFIGURE_USE_IMFS_AS_BASE_FILESYSTEM
> > > >
> > > >
> > > > In principle, as far as I read, should work, but it does not. Has
> > > > anybody any clue?
> > > >
> > > >
> > > Looking at the CVS head, there is no obvious reason in the leon2 
device
> > > driver that the /dev/console would work if /dev/console_b doesn't.   
I
> > > would recommend stepping into console_open() and seeing what 
happens.
> > >
> > > I assume you still have the console device driver configured since 
they
> > > are in the same driver.
> > >
> > > --joel
> > > > Cheers,
> > > >         Aitor
> > > >
> > > >
> > > >
> > > >
> > > > *Aitor.Viana.Sanchez at esa.int*
> > > > Sent by: rtems-users-bounces+aitor.viana.sanchez=esa.int at rtems.org
> > > >
> > > > 31/08/2007 15:21
> > > >
> > > >
> > > > To
> > > >         Aitor.Viana.Sanchez at esa.int
> > > > cc
> > > >         RTEMS Users <rtems-users at rtems.org>
> > > > Subject
> > > >         Re: Two UARTS
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > could be using the devices /dev/console and /dev/console_b
> > > >
> > > > Cheers
> > > >
> > > >
> > > >
> > > > *Aitor.Viana.Sanchez at esa.int*
> > > > Sent by: rtems-users-bounces+aitor.viana.sanchez=esa.int at rtems.org
> > > >
> > > > 31/08/2007 15:16
> > > > To
> > > >         RTEMS Users <rtems-users at rtems.org>
> > > > cc
> > > >
> > > > Subject
> > > >         Two UARTS
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > Hi everyone,
> > > >
> > > > I've got, for sure, and stupid question. I am working with the 
RTEMS
> > > > for LEON architecture. I know that the standard output is 
connected
> > > > with the UART1, but I also have an UART2. I would like, from a 
user
> > > > application, to send some trace information out through the
> > > > UART2...which the easiest way to do that?
> > > >
> > > > Cheers,
> > > >         Aitor
> > > >
> > > >
> > >
> > > _______________________________________________
> > > rtems-users mailing list
> > > rtems-users at rtems.com
> > > http://rtems.rtems.org/mailman/listinfo/rtems-users
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