Capacitive screen for mini2440

Forum: Hardware
Jaz 
Hi!

I'm presently working with the mini2440. I would be interested in using a
capacitive touch screen instead of the 4 wire resistive included in the
package. Is there anyone who has tried it succesfully? Does anyone have an
idea what product I could use?

Thanks!

Ibrahim 
Yeah I am currently using my 52 inches FULLHD TV with the mini2440 and it
is working beautifully! I also used it with my Iphone4 and no problems!

Ibrahim

Peter 
Now, did anyone find a solution connecting and using mini2440 with
capacitive touchscreen?
@Ibrahim What can you do by connecting mini2440 to your TV? Is it possible
to watch HD with mini2440?

Neo Claw 
Hi,

Did anyone get a capacitive touch working with the mini2440? 
It would be interesting to know about it.

Thanks.

Jaz 
Is there any solution as to use a capacitive touch screen with the
mini2440. I think it can be done but i just don't know where to start!

Thanks!

DHAMASS 
Hi! JAZ

We can buy an evaluation kit(DM160211) in this site

http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&node...

And, from the place of the tag of APP Notes & softwear of this URL, We can
get driver of WINCE.
I am challenging it now. If a good result is given, I report it. 
Please challenge you.

http://www.microchip.com/en_us/technology/mtouchscreens/index.html

Jaz 
Hi

DHAMASS: looks nice but it says that that the computer interface must run
with at least a dual-core processor, what the mini2440 doesn't have!

I'm just wondering if it could really work. 

Give me news!

DAHMASS 
Hi! Jaz

4W Resistive Touch screen can do control with only two ADC of the main CPU.
However, Capacive Touch screen, an exclusive micro controller is usually
necessary.
For example, Atmel which is the contoroller maker is famous for Capacitive
Touch screen controller, but they uses their AVR micro contoroller, and
Cypress uses their PSOC micro contoroller too.
These maker's chip does not show the detection algorithm.
However, Microchip shows it. Therefore I think that we are easy to use the
controller of Microchip.

These chip maker's controller sends position data to a Main CPU using I2C
or SPI.
Because most capacitive touch controller uses spi and I2C and transmit
position data, you should communicate with spi and I2C of MINI2440, from an
evaluation board's(DM160211) I2c and SPI signal. 
Enough documents are prepared for if we develop these in this site.

Best regards!