[En-Nut-Discussion] Port to a non ethernut board

[Marc Giger]

Hi Harald

On Fri, 25 Aug 2006 12:09:46 +0200
Harald Kipp <harald.kipp at egnite.de> wrote:

> Hi Marc,
> 
> A special fuse setting is not required
> http://www.ethernut.de/en/isp/fuses.html
> 
> As you specified
> NUT_CPU_FREQ = "16000000"
> also no 32kHz crystal is needed.
> 
> May be your external RAM is not working?
> 
> I'd suggest to add an RS232 output and upload Basemon. This
> program starts without external RAM and checks various
> hardware functions.
> http://www.ethernut.de/pdf/enhwm13e.pdf
> Page 9ff
> 
> Harald

You are right in every point!
First, of course the LED is soldered as you said. I always did it right
but this time...don't know why...

So after changing that, the LED is shining. After some more tests I
noticed that it stops working after NutInitHeap()...and
that points to your RAM theory.

I installed Basemon to check the external RAM. Basemon says it is 0kB
installed. So I think that damn thing is defective.
The memory on that board seems to be a 70ns
access time type. I read somwhere that I don't have to set a different
wait state for that kind of memory...right?

Thank you for your time. I'm sure you will hear from me again soon...

Greetings

Marc

> 
> At 21:17 24.08.2006 +0200, you wrote:
> >Hi,
> >
> >On Thu, 24 Aug 2006 15:05:59 -0300
> >"Thiago A. Corrêa" <thiago.correa at gmail.com> wrote:
> >
> > > Hi,
> > >    atmega128? I was in a similar situation when I first started
> > > out messing with ethernut, actually I had a lockup exactly where
> > > you describe. The problem were fuse bits if I recall it
> > > correctly, or one of the chip pins were not soldered correctly,
> > > not sure. Might be worth to check those out.
> >
> >I'm shure the solderings are fine. I can flash and run my own
> >programs without problem.
> >Does NutOs require special fuse settings? As far as I see, at this
> >early stage in NutOs (NutInitXRAM) should run fine with the same
> >settings as with my programs...or do the gcc / linker magics for
> >NutOs require special fuse bits set?
> >
> >Thank you
> >
> >Marc
> 
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