[En-Nut-Discussion] 4-6 serial ports on the ethernut?

[Ovidiu]

Hi,

I am thinking of using a software solution (direct connection of max232 to
the i/o port), but i don't know if this is possible with Nutos without some
serious programming (or maybe it is easy, but i don't know how...) and I
don't have knowledge of any "hardware" chips that can do this. Can you give
me some advice on this?


Thank you in advance,
Ovidiu

PS: I forgot to say that I'm going to use Ethernut v1.3H

On 10/13/06, Harald Kipp <harald.kipp at egnite.de> wrote:
>
> Hi Ovidiu,
>
> The number of serial ports is limited by available RAM only
> and 4-6 ports are no problem.
>
> But I'm not sure, if I got you right. You are talking about
> UARTs, right? The ATmega128 got two of them only. What
> hardware do you intend to use for the remaining 2-4 UARTs?
>
> Harald
>
>
> At 12:39 13.10.2006 +0300, you wrote:
> >Hello,
> >
> >
> >I am new to Ethernut (in fact I'm new to MCU's) and I am working on a
> data
> >acquisition system for my diploma project and for this I need to know if
> I
> >can program 4-6 serial ports on the same Ethernut board (I need to know
> if
> >NutOS has the software functions to support this).
> >
> >The ethernut board is working as a "concentrator" gathering information
> from
> >some smaller AVR's (attiny15) through a serial line and forwarding the
> >information to a central computer using eth. In hardware the modification
> is
> >very easy, the problem is with the software so my question is if NutOS
> has
> >support for more serial ports and if not what "simple" solution can I
> use.
> >
> >Thanks,
> >Ovidiu Poncea
>
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