Lpc2000

Hi !

Thanks for the tip, but i did it already. My schematics are a little bit
different in regard to the memory chipselect generation, but i think
that is not the problem.

thanks for help
timo

atmelbr schrieb:

>Hi Timo,
>
>Take a look at:
>http://www.ulrichradig.de/site/arm_projekts/webserver/index.htm
>Look for eagle schematics.
>Or put a message on this forum:
>http://www.ulrichradig.de/site/forum/index.php
>Regards,
> Marcio
>--- In lpc2000@yahoogroups.com, Timo Bruderek <timo.bruderek@...> wrote:
>  
>
>>Hi All !!
>>
>>I am a student at University of applied science Augsburg and currently
>>working on my Final Year Project.
>>It is a Webserverboard based on a LPC2214 with 4MB external SRAM to be
>>able to run uCLinux.
>>I build the board and tested the external memory using a little test
>>routine.
>>I wrote  a value to a pointer in the external SRAM and read it back.
>>Everything looks ok so far, but if i load ucLinux in the SRAM, i get an
>>interrupt for an undefinded intstruction.
>>If i use OpenOCD and have a look at the memory, i saw, that the content
>>is not right. The upper half-word is on a different address the the
>>lower half-word. It looks like that the upper half-words have on offset.
>>
>>If i write to memory using a pointer in a C-routine, everthing looks ok
>>!! Even if i check the content of the memory with OpenOCD. !!
>>
>>Has anybody an idea, where i can have a look for the error ??
>>
>>Thanks,
>>Timo
>>
>>    
>>
>
>
>
>
>
>
>
> 
>Yahoo! Groups Links
>
>
>
> 
>
>
>
>
>  
>


[Non-text portions of this message have been removed]