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

[Ernst Stippl]

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?
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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.
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