[En-Nut-Discussion] Re: Re: Adding LCD, Keyboard,...

[Tolga Onbay]

With keyboard, I mean 12 button. One 5V and one ADC input is enough for
analog keyboard. (Don't want a matrix keyboard) So I need :

8 IO pin for LCD data(I don't know but maybe Data lines can be used)
X other pins for LCD (including 5V, GND, EN vsvs)
2 ADC
1 PWM

Just I'm asking is there enough IO expander pins. Please tell me why I can't
use Ethernut 1.3G. Not enough pins, or performance

On 2/22/06, Thiago A. Corrêa <thiago.correa at gmail.com> wrote:
>
> I don't know about your other requirements, but you could save quite a
> brunch of pins using a PC keyboard... you only need 2 pins if I'm not
> mistaken. The only problem is that your keyboard routine has to be
> quite fast to handle each bit in the serial line... unfortunally it
> doesn't work properly when connected to the chip's serial ports...
>
> On 2/21/06, Dan Morphis <dan.morphis at gmail.com> wrote:
> > Given your requirements (Graphical LCD, Keyboard, ADC, PWM) I don't
> think
> > the Ethernut 1.3G will fit your needs.  Maybe someone else on the list
> has
> > some ideas.
> >
> > -dan
> >
> > On 2/21/06, Tolga Onbay <tolgaonbay at gmail.com> wrote:
> > >
> > > But I don't want to use ARM.. Any suggestion?
> > >
> > > >Tolga,
> > > >  I think you would be a little bit stretched to add this stuff to
> the
> > > >Ethernut 1.3G.  But I do know of another embedded system which might
> suit
> > > >your needs better.  Technologic Systems has a bunch of ARM9 based
> PC104
> > > >sbc's (http://www.embeddedarm.com/epc/prod_SBC.htm).  They also just
> > > >announced the TS-7300 (http://www.embeddedarm.com/epc/ts7300-spec-h.
> > > >htm) which has vga out, as well as a bunch of DIO so you could
> bit-bang
> > > PWM,
> > > >and has a 12-bit ADC.
> > >
> > > >One of the big differences between the Ethernut series and the
> TS-7xx0
> > > >products is the TS stuff uses a Linux with a 2.4 series kernel for
> it's
> > > OS
> > > >(Which is not a RTOS) and the Ethernut uses its own OS, which if I
> recall
> > > >correctly is an RTOS (somebody correct me if I'm wrong please!).
> > >
> > > >I hope this helps!
> > >
> > > >-dan
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