[ECOS] free GUI for eCOS
Wed Nov 19 14:32:00 GMT 2008
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
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
On Wed, Nov 19, 2008 at 12:35 PM, abhishek srivastava
> 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 <email@example.com> wrote:
>> From: Gábor Török <firstname.lastname@example.org>
>> Subject: Re: [ECOS] free GUI for eCOS
>> To: email@example.com, firstname.lastname@example.org
>> Date: Wednesday, 19 November, 2008, 4:38 PM
>> 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
>> directly as the controller chip scans the LCD pixels.
>> So I recommend that you look for a TFT with one of these
>> chips or you use a microcontroller that has an internal LCD
>> *What do you mean when you say realtime? How many
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