Re: [ECOS] free GUI for eCOS

["Gábor Török" <tgabor84 at gmail dot com>]

I provide links to some datasheets (some are hard to find on the
internet), please have a look at them to find out what RGB and VSYNC
interfaces are:
<link deleted>
<link deleted>
<link deleted>
<link deleted>

Please download them and do not browse them from your browser.
There are some wrong information in these datasheets, so be careful.
When you select a TFT with a similar controller chip, be careful,
because not all TFT modules make all three interfaces available at
their connectors.

Gábor

On Wed, Nov 19, 2008 at 12:35 PM, abhishek srivastava
<just_abhi22@yahoo.co.in> wrote:
> sir,
> cud u plz elaborate on RGB and VSYNC.........
> i m a newcomer to ecos and GUI so hard to interpret wht u actually intended to say.
> i couldn't change my micro controller as i need to port ecos onto it.but abt TFT issue tht i cud sort out.
> i m using philips LPC2148 ARM7TDMI-S processor. which TFT do u think would be compatible to it with my memory constrain of 32k RAM and 512K flash.
>
> with real time, i need that the response time should be as low as possible. no sooner any disturbanc in signal occurs it shud be displayed on LCD and alarm shud blow. that's why i am using ecos........
> wht u say..........
> plz tell ur suggestions
>
>
> --- On Wed, 19/11/08, Gábor Török <tgabor84@gmail.com> wrote:
>
>> From: Gábor Török <tgabor84@gmail.com>
>> Subject: Re: [ECOS] free GUI for eCOS
>> To: just_abhi22@yahoo.co.in, ecos-discuss@ecos.sourceware.org
>> Date: Wednesday, 19 November, 2008, 4:38 PM
>> Hi!
>>
>> I think what you need is an LCD controller with a
>> controller IC that
>> has the graphic memory (or call it framebuffer). But if you
>> want to
>> display a realtime* signal on screen (similar to an
>> oscilloscope), you
>> need an "RGB" or "VSYNC" input also.
>> The ILI9320 chip (that I written
>> an eCos driver for, read my messages on the list) and
>> similar ones
>> (LGDP4524, HX8312, S6D0129, etc.) has a second interface
>> that can work
>> simultaneously with the microcontroller interface. They
>> recomment that
>> you draw text and menus with the microcontroller interface
>> and you
>> display moving picture with the  "RGB" or the
>> "VSYNC" interface. The
>> text and the menus are stored into the internal graphic
>> memory of the
>> chip, and the moving picture is either stored to the RAM or
>> displayed
>> directly as the controller chip scans the LCD pixels.
>>
>> So I recommend that you look for a TFT with one of these
>> controller
>> chips or you use a microcontroller that has an internal LCD
>> controller.
>>
>> *What do you mean when you say realtime? How many
>> frames/sec?
>>
>> Gábor
>>

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