[ELDK] Starting an application at boot time using different tty<x>

[Wolfgang Denk]

Dear "Orditz, Jonathan",

would you please adhere to basic netiquette and restrict your line
length to some 70 or so characters? Also, please no not post HTML.

In message <51381B6BAD346D40809491F8A60FBFB47583DC2A at SELEX01.selectron.local> you wrote:
> 
> I have two questions concerning:
> 1. Starting a script at boot time
> 2. Displaying system messages on tty<x> and the output of my applications o=
> n tty<z>

None of these questions have anything to do with the ELDK, so you are
kind of off topic here.

> 1. Starting a script at boot time
> 
> I have to start two applications (a microbrowser and a webserver) at boot t=
> ime. I wrote a script called start.sh which call these two executables. I a=
> dded this script at the end of inittab: "::once:/start.sh". The two applica=

Please keep in mind that you have to provide complete information if
you expect useful answers - the way how to start commands at boot time
depends a lot on which type of init procedure you are running -
System V init is different from Upstart , which again is different
from BusyBox init, etc.

It seems you are using BusyBox here...

> tions started but I noticed a drop in the performances compared to starting=
>  the applications manually. Do you know why ? Are any priorities set low wh=

Please define exactly what "a drop in the performances" means?

> en starting from inittab ? Is "inittab" the right place to start my "start.=
> sh" script or is there a standard place to start it from ?

This depends on what you are trying to do, of course.

There is many ways to acchieve a certain goal,  and  without  knowing
your  exact  requirements  it  is  impossible  to  tell what the best
solution might be - for example, it mith make sense to start  "impor-
tant"  or  "urgent"  services earlier than other, less critical ones.
Say, you want to have the GUI running as fast as  possible,  while  a
login over network is not that important and can be delayed.

We don;t know your requirements, so we cannot give you
reqommendations.

> 2. Displaying system message on tty<x> and output of my applications on tty=
> <z>
> 
> When I start my system a microbrowser directly writes into the framebuffer =
> and displays my html pages. But the system also writes to this framebuffer =
> (for example when connecting an USB stick, or when the reboot of the system=
>  is done, or when an error occured, etc...). But I do not want the user to =
> see the linux system messages. So I would like to separate the output of my=
>  applications and the system messages. But how do I tell the system to put =

It is you who defines where the console terminal is connected to.

> its messages to tty1 and not tty0 ? How can I switch automatically between =

Pass a suitable "console=" command line argument to your kernel.

> the tty0 view and the tty1 view ? (I have no ALT + F1 keys on my embedded h=
> ardware, so I must find another way to switch).

You must define some other way to switch, then. We don't know your
hardware ...

Best regards,

Wolfgang Denk

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