Capacitive touch Screen

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Capacitive touch Screen

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VGS
Contributor III

Hi

I am using K70 controller with code warrior bare metal code.

I wanted to try out capacitive touch screen for my project insted of resistive touch screen which i am currently using.

sadly i couldnt find any samples or any details about good capacitive touch screen  for k70.

Is it possible to interface a 7 inch or 5 inch capacitive touch screen with k 70 controller.

are there any sample programs for this.

Can anyone please suggest any good capacitive touch screen controller with samples and good documentation to use with k70 .

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ZhangJennie
NXP TechSupport
NXP TechSupport

Hi  GOWRISHANKAR V

I recommend TWR-LCD-RGB: Tower System Graphical LCD module with RGB interface

Features

    4.3" TFT LCD panel

        WQVGA resolution (480 x 272)

        24-bit color depth (TrueColor)

        4-wire resistive touch overlay

    CRTouch Ready Play

        X/Y resistive touch detection

        Capacitive touch detection

        I2C interface to Tower System MCU

    PEG and eGUI support drivers

    Compatible with the RGB interface defined on the secondary Tower elevator

    Pre-assembled with the included secondary TWR-ELEV

Homepage:

http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=TWR-LCD-RGB

for more information, please also refer:

http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=TWR-LCD-RGB&fpsp=1&tab=Design_Tools_T...

http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=CRTOUCH

https://community.freescale.com/message/304066#304066

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this answer is for you, if it helps, please click on "correct answer " button. thanks!

Best Regards,

ZhangJun

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ankurchauhan
Contributor I

Hi Gowrishankar,

I'm also using k70 controller with bare metal code.

But in my project i'm using resistive touch screen.

So can you please share some demo code which you used for resistive screen.

which can explain how to configure touch screen and how we can read data from there.

Thanks and Regards

Ankur

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