Re: Regarding Serial consloe

["Prabhu Chawandi" <prabhu.chavandi-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

Ajay,

  Is USB fs not an auto fs ... ?
I mean as we put the device we get the /dev/<device_id> created auto...

I can see the /dev/ttyUSB0 entry.

Thanks
Prabhu

On 10/13/08, Gupta, Ajay Kumar <ajay.gupta-l0cyMroinI0@public.gmane.org> wrote:
>
> > CONFIG_CMDLINE="rw console=ttyUSB0, 115200 mem =128M"
> >
> > and in inittab
> >
> > ttyUSB0::respawn:/bin/getty  -L ttyUSB0 115200 vt102
>
> Apart from this add "mknod /dev/ttyUSB0 c 188 0" in "filesystem/etc/init.d/rcS"
>
> This is required if this node is not created during bootup and usb serial
> device detection.
>
> Regards,
> Ajay
> >
> >
> > --Prabhu
> >
> > On 10/13/08, Prabhu Chawandi <prabhu.chavandi-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> > > Some more updates :
> > >
> > >   I am using kernel 2.6.12.4.
> > >
> > > It was Tomasz Chmielewski who said that  boot messages cant be logged
> > > on USB-serial. soory for the mistake Aristeu Rozanski .
> > >
> > > On 10/13/08, Prabhu Chawandi <prabhu.chavandi-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> > > > Hi,
> > > >
> > > >   I am not getting any errors ....
> > > >
> > > > I have set the command line parameter. I am booting through  CFE ,
> > > > This time I am using Serial console while booting I am changing to USB
> > > > serial...
> > > >
> > > > Once the USB -serial driver is loaded I am expecting the rest of the
> > > > logs on the console but I am getting AT command and no more
> > > > messages...
> > > >
> > > > Later I changed inittab file for the login prompt...
> > > >
> > > > I have the other serial connection through which I can control the
> > > > application. When I close that application, through the normal serial,
> > > > I am getting login prompt on both USB-serial and normal Serial.
> > > >
> > > > If I run the application again I am getting logs now on both serials...
> > > >
> > > > I am consfused why I am not getting the boot log messages...
> > > >
> > > > I am sure that I have set commandline parameter properly....
> > > >
> > > > Aristeu Rozanski has said above that ,,, it is not possoble to log
> > > > boot messages on the USB-serial ... what might be the techincal reason
> > > > ?
> > > >
> > > > Thanks
> > > > Prabhu
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > On 10/10/08, Greg KH <greg-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org> wrote:
> > > > >
> > > > > A: No.
> > > > > Q: Should I include quotations after my reply?
> > > > >
> > > > > On Fri, Oct 10, 2008 at 03:28:56PM +0530, Prabhu Chawandi wrote:
> > > > > > On 10/10/08, Prabhu Chawandi <prabhu.chavandi-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> > > > > > > Yeah...   I did all the configurations.
> > > > > > >
> > > > > > > Still not getting the logs :(
> > > > > > >
> > > > > > > I feel I am missing the part where USB- serial  will be registered to
> > > > > > > the tty layer.
> > > > > > >
> > > > > > > or Do I need to insert the code where we will be opening the device
> > > > > > > and performimg the write/read  operations.
> > > > >
> > > > > No code needs to be added.
> > > > >
> > > > > Please let us know what errors you are seeing, what does your kernel log
> > > > > messages show, and so on.  It should work properly if you tell the boot
> > > > > command line to use the usb-serial port for console messages.
> > > > >
> > > > > thanks,
> > > > >
> > > > > greg k-h
> > > > >
> > > >
> > >
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