Lilltrolls graphics project.

[lilltroll]

Status: Just an idea
License: BSD

So many seems do do things with graphics, so I have to try as well with my XC-1 V1.0 card.
I will connect it to a 320*240 TFT, 262k colours screen with touchscreen. My goal is not to have the most impressive graphics, instead to have a minimum lag between the touchscreen and the screen with a high refreshrate of the touchscreen sampling. Doing circles with a "mini Paint" on the touch should create circles on the screen, and not something with 7 sides.
I HATE lag.
From wiki:
May's Law:

Software efficiency halves every 18 months, compensating Moore's Law.

[shawn]

Atmel has a touch screen controller chip worth checking out.

Check C
Shawn

[lilltroll]

Well, I was playing with PIC32 earlier, so the touch-screen is this one.
http://www.microchipdirect.com/images/d ... 164127.jpg
Microchip has put an extra connector to it, so you can acess more pins than the PIC32 does.
It is many complains of the limited XMOS chip-memory, but if you see it from a MCU perspective, you are not used to much RAM.

[lilltroll]

But thanks Shawn, I saw the Atmel multitouch chip some month ago. When people starts to take multisouch for granted in iXXX products - everyone has to follow I guess.

[shawn]

OSX dosn't tsch ITS, hobbled...

PlasticLogic A4 size, 0 energy screen, (it's memory!).
Simmular price points.
Absolute business tool.
Lifecycle forever, 100% return on investment.

lil Plastic 1ups the bigeye.

QUE
http://images.barnesandnoble.com/pimage ... e_home.jpg

Shawn

PS multitouch~shmultitouch, have you seen WUW/6th-sense? wild!

[lilltroll]

I have prepared the ports on the XC1 so I can connect ribbon cables to it.

[TonyD]

I like your idea of adding a LCD to the XC-1. What LCD will you be using?

I've taken the liberty of adding your project to the list of other video and graphics projects at the XMOS Video Interest Group (XVIG)

[lilltroll]

I use the Truly tft-g240320UTSW-92W with resistive touch and GRAM. But I dont think it's recomended for new designs anymore. Nowadays they have solutions with multitouch. Ckeck out
http://www.trulydisplays.com/tft/index.html

My own bible:
http://www.trulydisplays.com/tft/driver ... DP4531.pdf
http://ww1.microchip.com/downloads/en/D ... 51713a.pdf

[lilltroll]

Connected the hardware and started to write the init. The 2-way communication to the GRAM should be a good combo with XMOS. No need to use up the XMOS memory.

[lilltroll]

Hmm, it is a little bit similair to program the init talking to a graphic chip as to talk to a Audio CODEC, but it's more pages in the pdf with the graphics. I hope am able to get an readback from the graphic chip soon.