Freescale Semiconductor EVBCRTOUCH Manuale utente

EVBCRTOUCH

Xtrinsic CRTouch Capacitive and Resistive

Touch-Sensing Platform Evaluation Board

Quick Start Guide

READY PLAY SOLUTIONS

Xtrinsic

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

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

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.

Quick Start Guide

Step-by-Step Installation Instructions

In this quick start guide, you will learn how to set up the EVBCRTOUCH board.

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

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

C communication

J8 RXD USB

CRTouch Reception

On (short) CRTOUCH Rx signal connected to USB2SER

Off CRTOUCH Rx signal disconnected from USB2SER

J9 I

C ADRSEL

C Address Selector

On (short) I2C address 0x49

Off I

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

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.

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

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