Freescale Semiconductor EVBCRTOUCH User manual

EVBCRTOUCH
Xtrinsic CRTouch Capacitive and Resistive
Touch-Sensing Platform Evaluation Board
Quick Start Guide
READY PLAY SOLUTIONS
Xtrinsic

2
Quick Start Guide
Get to Know the EVBCRTOUCH
Evaluation Board
Power On/Off Communication
Ports
Four- and Five-Wire
Connectors
Four Capacitive ElectrodesCRTouchUSB2SER

READY PLAY SOLUTIONS
3
Get to Know the EVBCRTOUCH
Evaluation Board
Xtrinsic CRTouch EVBCRTOUCH
The Xtrinsic capacitive and resistive touch-sensing platform (CRTouch) enables resistive
touch screens to handle two-touch gesture recognition and allows the addition of up
to four capacitive electrodes to your system, all packaged on a 5 x 5 mm 32-pin QFN.
It supports four- and five-wire touch screens and communicates over UART and I
2
C
communication protocols. The implementation of these technologies enables the CRTouch
to help reduce space, cut software development costs and speed time to market.
Features
• Standard X, Y resistive touch screen
detection with optional calibration
• Pressure detection on four-wire
resistive touch screens
• 16-sample FIFO with watermark to
generate an asynchronous event
• Slide gesture detection for single touch
• Two-touch gesture detection for
resistive four-wire screens
Zoom in/out
Rotate
• Four capacitive electrodes
independent from touch screen
may be configured as:
Keypad
Rotary
Slider
• I²C and UART communication
Two selectable I²C slave addresses
UART baud rate auto detection
mechanism
• Event and touch indicators for main
host processor
• Wake up by resistive touch, capacitive
electrode touch, external pin and serial
communications
• Normal run, sleep and shutdown
modes for reduced power consumption
• Linux
®
and Android™ integration
example code available

Unpack and Verify
Package Contents
Ensure the EVBCRTOUCH touch-
sensing platform evaluation board
package includes:
• Xtrinsic CRTouch board
• Resistive screen
• Quick start guide
• Four-wire cable extension
• USB cable
• Stylus
Install the GUI Setup
Software
Go to freescale.com/CRTouch
and download the latest GUI
software version. Follow the
on-screen instructions to install
the communication driver for the
tool. Check back occasionally for
software updates.
Connect the USB Cable
and the Resistive Screen
Connect your computer to the
evaluation board via the included
USB cable. Connect the resistive
screen to the board. Power-up
the board using the power switch.
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Quick Start Guide
Step-by-Step Installation Instructions
In this quick start guide, you will learn how to set up the EVBCRTOUCH board.
1
2
3

Run the GUI Software and Verify Communication
Open and run the GUI software. From the port settings window, select the
COM port assigned to the evaluation board on your computer. Press the
resistive screen and then click on the Read button. If the X and Y coordinates
registers are updated in the CRTOUCH Settings window, you are ready to
use the EVBCRTOUCH evaluation board.
READY PLAY SOLUTIONS
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4

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Quick Start Guide
EVBCRTOUCH Jumper Options
The following is a list of all jumper options. The default installed jumper settings are shown
in blue.
Jumper Option Settings Description
J3 INT REG-CRT REG
Power Supply Selector
1-2 CRT REG. Supplied from an internal 3.3V regulator from
the CRTouch
2-3 INT REG. Supplied from on-board 3.3V regulator from
the USB
J4 INT VDD-EXT VDD
VDD Supply Selector
1-2 EXT VDD. Supply the EVB from an external power supply
2-3 INT VDD. Supply the EVB from the selection on J3
J6 TXD USB
CRTouch Transmission
On (short) CRTOUCH Tx signal connected to USB2SER
Off CRTOUCH Tx signal disconnected from USB2SER
J7 COMM SEL
Communication Selector
On (short) UART communication
Off I
2
C communication
J8 RXD USB
CRTouch Reception
On (short) CRTOUCH Rx signal connected to USB2SER
Off CRTOUCH Rx signal disconnected from USB2SER
J9 I
2
C ADRSEL
I
2
C Address Selector
On (short) I2C address 0x49
Off I
2
C address 0x4B
J10 VDD-VDD CRT
CRTouch Power Connection
On (short) Supply 3.3V to CRTouch
Off Isolate CRTouch from power
RXD USB
COMM SEL
INT VDD-EXT VDD
I2C ADRSEL
INT REG-CRT REG TXD USB
VDD-VDD CRT

READY PLAY SOLUTIONS
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EVBCRTOUCH Switch/Button Options
The following is a list of the switch/button options on the evaluation board.
Switch Option Description
SW1 Power On/Off On/Off switch
SW2 Reset Reset signal
SW3 Baud Rate Detect UART baud rate auto detection. Configure a new baud rate,
from 9600 bps to 115200 bps.
System Requirements
USB-to-Serial Driver
The USB-to-Serial driver must be installed before using the GUI.
Go to freescale.com/usb2ser to download this driver.
.NET Framework 4.0 or Up
.NET Framework version 4.0 or greater must be installed before running the application.
Go to microsoft.com/download/en/details.aspx?id=17851 to download the .NET
Framework version 4.0.
Power On/Off
Reset
Baud Rate
Detect

For more information about this and
other Ready Play solutions, please
visit freescale.com/ReadyPlay and
freescale.com/CRTouch
Freescale and the Freescale logo are trademarks of Freescale
Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Xtrinsic and Ready Play
are trademarks of Freescale Semiconductor, Inc. All other product or
service names are the property of their respective owners.
© 2012 Freescale Semiconductor, Inc.
Doc Number: CRTOUCHQSG REV 1
Agile Number: 926-27238 REV B
Support
Visit freescale.com/support for a list of phone
numbers within your region.
Warranty
Visit freescale.com/warranty for complete
warranty information.
Quick Start Guide