[En-Nut-Discussion] Dead Ethernut

[Pete Allison]

Ole, Thanks for the reply.

This was a working ethernut board. I had programmed it several times using
avrdude and a STK500 adapter using the JTAG programming interface. We have
not had any problems until now.

I can upload hex files, but the Atmel processor does not seem to execute
them. I believe the clock is running.

I may have carelessly connected the JTAG cable on the STK500 adapter to the
SPI connector on the ethernut board, instead of the JTAG connector. 

I don't know if this has caused any damage. It's the only thing I can think
of.

I have reloaded basemon.hex, and I get the same response. Avrdude reports a
successful upload, that the fuses are okay, but the code never executes.

I did try the code in question on another ethernut board and it works fine.
I must have damaged it somehow.

BTW, don't spend anytime on my previous questions. I have figured most of
out them myself, the important ones, at least. Good learning experience.

Pete Allison

-----Original Message-----
From: en-nut-discussion-bounces at egnite.de
[mailto:en-nut-discussion-bounces at egnite.de] On Behalf Of Ole Reinhardt
Sent: Monday, March 02, 2009 2:39 AM
To: Ethernut User Chat (English)
Subject: Re: [En-Nut-Discussion] Dead Ethernut

Hi Pete,

> We have an ethernut that we can program, but does not respond to 
> either  the serial port or the the ethernet port. It was working, and 
> we had  programmed it several times.

Sorry, I can't realy imaging that or you'r the very unlucky one, who fall
through the cracks. In case of no response don't hesitate to check back a
few days later and to resend your question, perhaps with a short notice like
"urgent" or something similar in the subject line.
Sometimes, when there is much traffic on the mailing lists, some questions
get lost...

btw: I searched your last mails in my mail history and found, that you
sometimes answered another mail and just changed the header. In this case
the mail will be sorted into the mail-thread you ansered to and won't open a
new thread. Much people use the threaded view in their mail client and not
just sorted by date. So you question might got lost this way too.

So I'll try to answer your old questions too in some more mails.

Now to your problem:


a.) First a question: 
Which Ethernut board do you use? Have you just tried a build a short
program, that will just toggle an I/O pin e.g. every second? (Connect an led
to see if it blinks)

b.) If you use an AVR based ethernut. Have you perhaps enabled the
ATMega103 mode? (Check your fuse settings)

c.) Have you correctly configured NutOS before building?

d.) Which compiler version do you use on which platform? There was the
avr-gcc version 4.3.0 up to 4.3.1 which (at least on linux) produced non
working code.

In case you have this compiler version (check it with avr-gcc --version) use
a newer / older one.

> The red and green lights come on, but not the yellow.?
> 
> I have reloaded basemon.hex, but it does the same: no response on the
serial port or the ethernet.

e.) Have you pressed and hold down space on the serial terminal when
booting? Basemon will just talk to you, when it received the space key.

f.) Have you checked your serial settings of your serial terminal program?
Are you shure you have not enabled handshake?

g.) Try to clear the eeprom contents. You might got a non working setting.

h.) Checking ethernet is not that simple if you don't know the IP address
you gave to the board. Try to use wireshark
(http://www.wireshark.org/) to sniff the ethernet traffic.

Bye,

Ole Reinhardt

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