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[avr-chat] TFT LCD control using AVR
From: |
Royce Pereira |
Subject: |
[avr-chat] TFT LCD control using AVR |
Date: |
Sat, 16 Aug 2008 21:28:13 +0530 |
Hi, all,
Has someone interfaced an AVR to a LCD control chip like Epson S1D13A05 /
SSD1906 or the like.
I'm starting my new project with a LCD touch screen. This is the 1st time
i'm using either.
The display is a 320x240 TFT LCD, with resistive touch screen., with 6bits
each for RBG = 18 bits.
Many makes are available - that's the least of the challenge.
The challenge is to interface the thing to my AT Mega32 board.
I've done some homework before posting - via google, & have found the
following options.
1. Buy a LCD control board - typically has the Epson(like) controller as
well as a fast, dedicated, 16 bit MCU to interpret high level commands from
my AVR board via SPI / RS232, and dump the bitmap to the controller RAM.
Also, it will read the touch panel, & send the XY data to my board.
Reachtech & earthLCD are two such suppliers (*anyone know of others?*) .
However, these cost @ USD 200. This could be a shoirt term solution.
2. Design/Build one myself. This would take time, but would pay off in the
long term.
The latter involves using the usual Epson controller & another MCU (I'd love
to use an AVR), and writing the command interpreter myself.
Now - has anyone attempted / completed this, and is willing to share their
experience ?
I understand a solution exists using AT32AP7000, but I'd like to keep things
minimalistic for the moment.
Actually I recall a design contest by Atmel, whose winners had designed a
TFT LCD controller using a Mega8515 (in place of the Epson chip) & an
Mega128 for the high level interface.
Is there any documentation available on this technique?
.Thanks & Best Regards,
--Royce
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- [avr-chat] TFT LCD control using AVR,
Royce Pereira <=