[En-Nut-Discussion] Major memory mapping changes?

Harald Kipp harald.kipp at egnite.de
Tue Oct 19 15:54:13 CEST 2004


Hi Radek,

0xE000 should be still available with Ethernut 2.x.

Are you running with or without JTAG ICE?

Regards,

Harald

At 13:06 19.10.2004 +0200, you wrote:
>Hi,
>
>I've been using Ethernut 1.3 so far without any serious problems. I use it to
>control some IO boards which are connected directly to the address and data
>bus. It works in a simple way where I write to *(xdata unsigned char *)
>(0xe000) and the board just knows I want to talk to it and takes the data.
>Reading works the same. Unfortunately, with Ethernut 2.1, this got broken.
>The writing is still functional but when I try to read from this memory area
>(which should be AFAIK not occupied by any device) I just get all
>0xff. :-( Don't you know what could be wrong? Of course I can change the
>address of the boards to something else but I don't have time to try all
>possible combinations so I would need a hint... :-(
>
>Thanks...
>Radek Podgorny




More information about the En-Nut-Discussion mailing list