Re: [uCsimm] ucsimm display &keboard problem

From: iMAXSZ engineering (imaxsz@szonline.net)
Date: Tue May 23 2000 - 22:08:57 EDT


    I think the main problem existing is the IO redirection problem. Now my
LCD can display kernel message (via printk) or boot message, but after boot
up, display redirect back to serial port. I do think it was a TTY
redirection problem,

From: Tom Walsh <tom@cyberiansoftware.com>
To: <ucsimm@uClinux.com>
Sent: Tuesday, May 23, 2000 11:22 PM
Subject: Re: [uCsimm] ucsimm display &keboard problem

> > iMAXSZ engineering wrote:
> >
> > Hi: all
> >
> > I connect my 1 bit 480 *64 LCD to ucsimm module, now the LCD can
> > dispaly char correctly. but I have some problem
> > that I can't solve.
> >
> > 1. How to make all message that ucsimm display on pc screen display
> > on my LCD? for example: etc/issue content is
> > dispayed on pc screen when we boot uClinux, now I want to make the
> > etc/issue content dispaly my LCD.shoul I how to
> > do ?
>
>
> The LCD is an additional piece of hardware that simply exists in the
> system, it is not an essential part of the system in any way. There is
> no support for an LCD display from within uClinux, OTHER THAN the fact
> that you can build an application that runs under uClinux and changes
> the data within the LCD framebuffer.
>
> With all that being said, you probably could integrate the LCD into the
> uClinux as an essential part of the system, such as being the system
> console, but no code that I am aware of has been written, as yet, to do
> this...
>
>
> >
> > 2.Could the ucsimm use keyboard directly ? if not , should I how to
> > do?
>
> Sure, you can put a matrix keyboard on it. If you mean a PC/AT style of
> keyboard, then you will need an external controller to speak to the PC
> keyboard and have it pass the key data back to the 68EZ328 processor.
>
>
> Regards,
>
> TomW
>
>
>
> --
> Tom Walsh - WN3L - Embedded Systems Consultant
> 'www.openhardware.net', 'www.cyberiansoftware.com'
> "Windows? No thanks, I have work to do..."
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>

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