[En-Nut-Discussion] Data acqisition from flash instead of externalfile

[Ernst Stippl]

Hi Lorenzo!

The Ethernut 2.1b board contains a Dataflash chip (IC13). I have not worked
with it, but this could provide enough capacity to store the "boot.lse"
information.
Please have a look into the Ethernut html doc under "modules" way down at
"special hardware" and "SPI Flash devices"
There is a disclaimer that "These routines are poorly supported and may not
work as expected."
But maybe they do for you.

If you want to write into the atmega128's own flash memory, this can only be
done when acting as a "boot loader" in AVR terms. I would not think this a
the way to go for the project you describe.

regards 
ernst 

-----Ursprüngliche Nachricht-----
Von: en-nut-discussion-bounces at egnite.de
[mailto:en-nut-discussion-bounces at egnite.de] Im Auftrag von Lorenzo Verniani
Gesendet: Donnerstag, 03. Mai 2007 18:20
An: en-nut-discussion at egnite.de
Betreff: Re: [En-Nut-Discussion] Data acqisition from flash instead of
externalfile


Hi Ernst!
I'm sorry for my incomplete exposition of the problem.
I'll fully explain what I've to do.

I'm working for a porting of Forth Lse64 to 2.1b ethernut board.
Forth Lse64 is written to run on a normal pc, and i had to rearrange sources
for avr architecture.
The last (perhaps) problem I've to solve is:
Lse64 needs to read a file(boot.lse) that's forth written to expand its
words and definition; that operation is necessary and I can't skip it
anyway.
On a normal pc that doesn't get trouble.
I thought to include that file (boot.lse) in a array of strings. By this way
it's all ok,but I'd like not include boot.lse in c sources,I'd like to write
it in a sector of non-volatile memory so as to give final user the choice of
using his own boot.lse (eventually customized by his forth program).

At all, I'd like to know a way to write (and read) a portion of non-volatile
memory.
If yes, I'll make memory be written by main program trough uart connection
on demand of user

Thank you again for your coperation
                               
                       Lorenzo Verniani

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