[En-Nut-Discussion] Diagnosing an Ethernut

[Harald Kipp]

Hi Grzegorz,

If the board still executes the code, I can hardly
think of defect on the Ethernut board. But some
things to try:

- Use another power supply. Don't ask, just do it!
   (I'm a little bit tired of discussing power supply
   issues. :-))

- Close the jumper near the ISP connector.

- Keep the reset button pressed.

- Re-install the programming software. It may also
   be possible, that you installed some other software,
   which disturbs the parallel port driver.

- Use another PC. Your PP might be broken.

Let me know about failure or success.

Harald


At 11:21 01.12.2004 +0100, you wrote:
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>Hash: SHA1
>
>Hello all
>
>I have a problem with my Ethernut rev. 1.3F board with a self-made
>programmer (STK-200 compatible).
>
>My Ethernut was a bit unused recently (shame on me!) and when I wanted
>to play with it again the ISP interface refused to work (vendor id 0xff
>etc., as if the board was not connected), however the board still
>executes its previous program so it's not very damaged. Unfortunately
>the app on board is very limited with regard to I/O (only the serial
>port) so I cannot check any other components. I made a new programmer
>and the symptoms are exactly the same - no communication with Ethernut
>(however, I have no other way to check the programmer so I might have
>screwed it up somewhere). I've used two different computers with the
>parallel port in various modes (SPP, ECP, ECP+EPP) and still no go.
>
>How can I diagnose the board more closely? Any ideas on how can I
>program it now?
>
>I'd like to state once again that the programmer used to work flawlessly
>~ for quite a time.
>
>Thanks in advance
>
>Regards,
>~ Grzegorz Nosek