[En-Nut-Discussion] nut/os-timer-PORTA-problem

[Ajit Ratnaparkhi]

Hi Ernst,

I tried for two timer related functions, NutGetSeconds() and NutSleep().
Before modifying the PORTA value, they work very fine. i.e. if i call for
NutSleep(2000) then it sleeps for 2seconds and NutGetSeconds() also work
fine.
Then after modifing PORTA value, call to NutSleep(2000) sleeps forever. This
I tried while executing single thread and two threads simultaneously. Also
NutGetSeconds() either does not return current time in 'seconds' OR it
returns same time value.

thanks and regards,
-Ajit.

On Thu, Apr 3, 2008 at 2:23 AM, Ernst Stippl <ernst at stippl.org> wrote:

> Hi Ajit!
>
> As far as I understand nutinit.c, removing the definitions of NUTXMEM_SIZE
> =
> "28416" and NUTXMEM_START = "0x1100" completely from the .conf file seems
> right for me to disable external memory.
> How do you actually figure out it's NutSleep which does not return?
> How many threads do you have running?
> Does the board lock up completely or are some parts of the SW still
> running.
>
> Regards
> Ernst
>
>
> -----Ursprüngliche Nachricht-----
> Von: en-nut-discussion-bounces at egnite.de
> [mailto:en-nut-discussion-bounces at egnite.de] Im Auftrag von Ajit
> Ratnaparkhi
> Gesendet: Dienstag, 01. April 2008 23:23
> An: Ethernut User Chat (English)
> Betreff: Re: [En-Nut-Discussion] nut/os-timer-PORTA-problem
>
> Hi Ernst,
>
> thanks a lot for your help. Will try this to check whether external
> memmory
> is really disabled or not. Actually to disable external memmory I just
> removed external memmory related declarations from the configuration file
> like,
> NUTXMEM_SIZE = "28416"
> NUTXMEM_START = "0x1100"
> I removed above two declarations from the configuration file. can you tell
> me any other way to disable external memmory if there is any?
> your help is valuable.
>
> thanx and regards,
> -ajit.
>
> On Wed, Apr 2, 2008 at 2:28 AM, Ernst Stippl <ernst at stippl.org> wrote:
>
> > Hi Ajit!
> >
> > Besides setting the values to disable usage of external memory, have you
> > tried to prove that your application does not use it?
> > A way to do this would be to call NutHeapAvailable() and display the
> > result.
> > It must not be larger than 4096 (in any case, because this is the size
> of
> > the internal memory), actually it must be considerable less: 4096 minus
> > the
> > stack size of (384 for "idle" plus 768 for "main") minus stack size of
> app
> > threads minus variables allocated from heap minus some global vars.
> >
> > Regards
> > Ernst
> >
> > -----Ursprüngliche Nachricht------discussion-bounces at egnite.de] Im
> Auftrag
> > von Ajit Ratnaparkhi
> > Gesendet: Dienstag, 01. April 2008 22:30
> > An: Ethernut User Chat (English)
> > Betreff: Re: [En-Nut-Discussion] nut/os-timer-PORTA-problem
> >
> > Hi,
> > I am using Ethurnut2, ATmega128, and I am not using external memmory, I
> > have
> > set configuration file accordingly, also I have not defined
> > NUTMEM_STACKHEAP
> > in configuration file. Do I need to include this? And what is the
> solution
> > to make timer work while using PORTA simultaneously?
> > Mime-Version: 1.0
> > Content-Transfer-Encoding: quoted-printable
> > Content-Type: text/plain; charset=iso-8859-1
> > Content-Disposition: inline
> >
> > thanks and regards,
> > -ajit
> > On Wed, Apr 2, 2008 at 1:42 AM, Ernst Stippl <ernst at stippl.org> wrote:
> >
> > > Hi!
> > >
> > > Which Ethernut board do you use?
> > > If it is Ehternut 1 or 2 or compatible using the ATmega128 CPU, this
> is
> > an
> > > excerpt from the ATmega128 data sheet:
> > >
> > > Alternate Functions of Port A
> > > The Port A has an alternate function as the address low byte and data
> > > lines
> > > for the External Memory Interface.
> > >
> > > So, if you external memory, port A is needed for it.
> > >
> > > Regards
> > > Ernst
> > > -----Urspr=FCngliche Nachricht-----
> > > Von: en-nut-discussion-bounces at egnite.de
> > > [mailto:en-nut-discussion-bounces at egnite.de] Im Auftrag von Ajit
> > > Ratnaparkhi
> > > Gesendet: Dienstag, 01. April 2008 22:01
> > > An: en-nut-discussion at egnite.de
> > > Betreff: [En-Nut-Discussion] nut/os-timer-PORTA-problem
> > >
> > > Hi all,
> > >
> > > I am using nut/os for development of an embeded application as a
> course
> > > assignment.
> > > I am facing problem while using timer functions,
> > > The problem is,
> > >
> > > Whenever I output some value on PORTA, all the timer functions stop
> > > working
> > > like NutSleep(). NutSleep(ms) makes the program to sleep forever,
> > instead
> > > of
> > > 'ms' amount of time. Some motors are connected to PORTA of the
> embedded
> > > device which I am working on. So to operate those motors I have to set
> > > PORTA
> > > to some value other than 0x00, and as soon as I change the value the
> > > timers
> > > stop working.
> > >
> > > Somebody please tell me what might be the problem, and what is the
> > > solution
> > > for it?
> > >
> > >
> > > Thanks and regards,
> > > - Ajit.
> > > _______________________________________________
> > > http://lists.egnite.de/mailman/listinfo/en-nut-discussion
> > >
> > >
> > >
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> > > 05:38
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> > >
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