Sx with graphic LCD

Bert Boye

Still trying to figure out the SX:-)
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I need to use a graphic LCD module and I found one that as the correct price and size, but can it be done using SX?
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Link to the LCD http://www.hebeiltd.com.cn/?p=LCM.graphic ·
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Thanks for the help, anybody interested to make the too work together?

Bert

PJMonty

Bert,

When you put a link in your message, you should use the formatting button which makes it an actual hyperlink. Just makes it easier for people to go there instead of having to cut and paste the URL.

See how cool it is when you have a real hyperlink: www.hebeiltd.com.cn/?p=LCM.graphic

Thanks, PeterM

Paul Baker

Yes in general it can be done but you will need to add external ram to hold the pixel data.

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LoopyByteloose

I was looking into the Graphic LCD for display of Chinese [noparse][[/noparse]extremely ram intensive with 7000 characters]. The heart of the problem is that Graphic displays are driven by an IC that was originally developed for Dot Matrix printers.

The usual format is only 8 bits wide and for wider displays you have to alternate output in 8 bit widths. [noparse][[/noparse]I suspect the 8 bit format is retained for two reasons - 8 bit microprocessor compatiblity and conservation of power (lighting 16 bits at one time doubles the power being switched). ] The SX Ubicom·is optimal because of the high clock frequency. You can output more without having the display begin to look jerky.· The displays are never really fully on, they just appear to be so and you will see reference to that in their documents.

I bought a display, but haven't had the time to get into it. Mine is 16 bits wide and really useless for Chinese as it is too blocky.· It really isn't good for much besides basic development.· The 64 bit width will provide you more graphic clarity, but how you create images really begins to ramp up the computer size.· A ROM based graphic set is by far the easiest to impliment.· Animated pictures would likely require you to create a separate Visual Basic program just to create your·ROM data.

You will be required to create character set ROM to provide data, a subroutine to look up ROM characters and move them to RAM, and a RAM to hold data going into the LCD. It may require more than one SX28 to work smoothly [noparse][[/noparse]or this may be easier for a first approach].

There is an SX-ring on the web that may provide you with a pre-written code solution as a starting point.

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G. Herzog in Taiwan

Post Edited (Kramer) : 5/22/2005 8:47:03 AM GMT