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krunal_299
Joined: 24 Jan 2008
Posts: 46
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 03 May 2008 8:50 TFT-LCD interfacing with AT91SAM7S64 |
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Hi to all!
I have 240x320 TFT-LCD with RGB pattern, 18 bpp(bits per pixel). 262K color.
and AT91SAM7s64 as ARM controller.
The LCd has standard conrol signals like : HSYNC, VSYNC, MAINCLK, ENABLE and 18 Datalines for RGB control of a pixel (6 bit for each color).
Upto now i have basic concept of this signals to get LCD interfaced with microcontroller that is : VSYNC is used for reset the frame, HSYNC for changing the row of pixel and MAINCLK sequences the column on its every pulse.
RGB data gets latched on each MAINCLK pulse with ENABLE active.
But I don't have idea how to write souce code for sending character or symbol to the LCD.
Does anybody can give me any resource on this issue?
Best Regards!
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krunal_299
Joined: 24 Jan 2008
Posts: 46
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| 05 May 2008 7:52 TFT-LCD interfacing with AT91SAM7S64 |
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My another confusion is:
If I want to change a single character of one line written in LCD screen, then Does i need to refresh whole frame or only the location of the particular character ?
Thanxs!
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krunal_299
Joined: 24 Jan 2008
Posts: 46
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| 12 May 2008 7:44 TFT-LCD interfacing with AT91SAM7S64 |
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Hi again !
If LCD module has parallel TTL RGB interface , Pls tell me, then is it compulsary to use LCD controller chips or i can directly interface LCD module with micrcontroller such AT91sam7s64 ?
Thanx!
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weeyndha
Joined: 12 Dec 2002
Posts: 113
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| 27 Jul 2008 14:26 Re: TFT-LCD interfacing with AT91SAM7S64 |
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Hi,
You could use SED1330 or SED1335 as lcd controller, or emulate their function using ARM
regards
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sakthivel.s
Joined: 22 Jan 2008
Posts: 9
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| 01 Sep 2008 8:50 Re: TFT-LCD interfacing with AT91SAM7S64 |
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You Can Use Any External LCD Controller like ILI9320 to ease the design.
Initlially to start with there is lot of software to generate a perticuler character.
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