[En-Nut-Discussion] Ethernut component failure assesment

[Petri Hyötylä]

Hi Ulrich
Thanks for the answer.
It has been a long time since this happened and at that time I was quite
busy (still am) so I just replaced the Ethernut after trying to get it to
work and never studied the problem more in-depth. I'll get back on this when
I have time. I still have the malfunctioning Ethernut stored on my shelf.

BR,
Petri



On Mon, May 18, 2009 at 4:07 PM, Ulrich Prinz <uprinz2 at netscape.net> wrote:

> Hi Petri,
>
> It is difficult to help you, as you do not state where or when the code
> stopped to work. May be you could give some more details. The NutO/S
> itself does not do any selftest.
> I always add some debug output before and after each stage of
> initialisation of each important component. But it is difficult to
> implement general debug output as the debug media is unknown. Some
> people use serial port, some use displays others unse a simple LED. On
> AVR only few people use JTAG.
>
> Regards
> Ulrich
>
>
>
>
> -----Original Message-----
> From: Petri Hyötylä <phyotyla at gmail.com>
> To: Ethernut User Chat (English) <en-nut-discussion at egnite.de>
> Sent: Fri, 15 May 2009 5:05 pm
> Subject: [En-Nut-Discussion] Ethernut component failure assesment
>
>
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> Hello!
> I'm doing a risk assessment for our little project.
> I remember that an Ethernut2 stopped working for some unknown reason
> (possibly ESD) about 1,5-2 years ago and I replaced the MCU but Nut/OS
> based
> testing code still did not work on the board while normal Atmega128 code
> seemed to work. I was wondering if there is some power-on self test
> done or
> is it possible that the MCU will wait indefinitely when there is some
> hardware malfunction. If there is some possibility of waiting
> indefinitely,
> is there a possibility of this happening while the system is running? If
> these are not possible or likely, I must have done something wrong.
>
> =0
> ABR,
> Petri
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