QSG115: CPT112S SLEXP8008A Kit

Quick-Start Guide

The CPT112S SLEXP8008A kit is designed to showcase the various touch features of the CPT112S I2C Capacitive Sense devices.

The device features capacitive sensing input engine with 12 inputs, buzzer feedback, mutually exclusive touch qualifier, capacitive proximity sensing input and other features, making it ideal for many capacitive touch applications.

KIT CONTENTS

• CPT112S Capacitive Sense Evaluation

Board

• 1 x mini USB cable

• 1 x acrylic overlay

• Getting Started card

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QSG115: CPT112S SLEXP8008A Kit Quick-Start Guide

Getting Started

1. Getting Started

• Install Simplicity Studio

Simplicity Studio is a free software suite needed to start developing your application. The various features of the device can be visualized using some of the inbuilt tools provided by the software. Download the latest version of Simplicity Studio from the Silicon

Labs website: http://www.silabs.com/simplicity-studio

Note: The board comes pre-loaded with a default configuration that provides buzzer feedback when the capacitive sensing buttons are pressed.

• Disable Auto-Detect in Simplicity Studio

The auto-detect feature in Simplicity Studio can cause a CPT device to miss touches. First disable automatic detection by clicking the [ Settings] icon, selecting [Device Manager]>[TCF Device Discovery], and selecting [Never] for [USB Discovery Options].

Kits can now be detected by clicking the [ Refresh detected hardware] button, but they will not automatically appear when connected to the PC.

• Set Up Your Kit

1. Provide power to the board by connecting the DBG USB connector to the PC using the provided USB cable. When a connection has been established successfully, the LED (marked in the picture) lights up.

2. Place the acrylic overlay on the board over the capacitive sense pads.

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QSG115: CPT112S SLEXP8008A Kit Quick-Start Guide

Getting Started

• Use the Capacitive Sensing Slider and Buttons

1. Slide a finger along the capacitive sensing slider.

2. Place a finger on any one of the buttons: CS04, CS05, ... , CS10.

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QSG115: CPT112S SLEXP8008A Kit Quick-Start Guide

Getting Started

3. The CS11 button is disabled in the default configuration of the board to enable the buzzer.

4. The buzzer activates each time any of the capacitive buttons (CS04, CS05, ... , CS10) are pressed.

• Detect Your Device

1. Click [ Refresh detected hardware]. The board may take some time to appear due to driver installations for the debug adapter.

2. Click [

CPT112S]. This will verify that the installation was successful, identify the CPT device on the hardware, and automatically configure the software tools for use with your device.

• View the Capacitive Sensing Data

1. Click the [

Capacitive Sense Profiler] tile under [Tools] in Simplicity Studio.

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QSG115: CPT112S SLEXP8008A Kit Quick-Start Guide

Getting Started

Note: The User Guide for CPT112S SLEXP8008A board contains more information about interfacing the device with other MCUs, using the [ Xpress Configurator] for simple configurations, and other features.

• Touch and Visualize

The [ Capacitive Sense Profiler] indicates touches, raw and processed data, and noise information in a simple-to-use GUI.

1. Touch and release any of the capacitive sensing buttons on the board. The profiler will display the measured raw data, touch detection points, and baseline.

• Change the Device Configuration

Based on the performance of the device in [

Capacitive Sense Profiler], change the capacitive sense input configuration using

[ Xpress Configurator].

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QSG115: CPT112S SLEXP8008A Kit Quick-Start Guide

Getting Started

• Utilize the Available Resources

The next section includes additional resources available for the device, including software examples, documentation, and application notes.

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QSG115: CPT112S SLEXP8008A Kit Quick-Start Guide

Resources

2. Resources

Xpress Configurator

The capacitive sense inputs can be configured for different thresholds, debounce counter values, scan periods, gain, scanning methods, touch time-outs, and touch exclusiveness by using the [ Xpress Configurator] tile.

Capacitive Sense Profiler

View touch data from the device and analyze the capacitive sensing system using the [

Capacitive Sense Profiler] tile.

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QSG115: CPT112S SLEXP8008A Kit Quick-Start Guide

Resources

Kit Documentation and User’s Guide

Kit documentation like the schematic and detailed board description can be found using the [

Kit Documentation] tile. The User's Guide will be a valuable document to reference while using the device.

Application Notes

Application Notes on peripherals and other various topics can be accessed using the [ Application Notes] tile.

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Community and Support

Have a question? Visit the community by clicking the [

Community] tile.

QSG115: CPT112S SLEXP8008A Kit Quick-Start Guide

Resources

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Simplicity Studio

One-click access to MCU and wireless tools, documentation, software, source code libraries & more. Available for Windows,

Mac and Linux!

IoT Portfolio

www.silabs.com/IoT

SW/HW

www.silabs.com/simplicity

Quality

www.silabs.com/quality

Support and Community

community.silabs.com

Disclaimer

Silicon Laboratories intends to provide customers with the latest, accurate, and in-depth documentation of all peripherals and modules available for system and software implementers using or intending to use the Silicon Laboratories products. Characterization data, available modules and peripherals, memory sizes and memory addresses refer to each specific device, and "Typical" parameters provided can and do vary in different applications. Application examples described herein are for illustrative purposes only. Silicon Laboratories reserves the right to make changes without further notice and limitation to product information, specifications, and descriptions herein, and does not give warranties as to the accuracy or completeness of the included information. Silicon Laboratories shall have no liability for the consequences of use of the information supplied herein. This document does not imply or express copyright licenses granted hereunder to design or fabricate any integrated circuits. The products must not be used within any Life Support System without the specific written consent of Silicon Laboratories. A "Life Support System" is any product or system intended to support or sustain life and/or health, which, if it fails, can be reasonably expected to result in significant personal injury or death. Silicon Laboratories products are generally not intended for military applications. Silicon Laboratories products shall under no circumstances be used in weapons of mass destruction including (but not limited to) nuclear, biological or chemical weapons, or missiles capable of delivering such weapons.

Trademark Information

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USBXpress® and others are trademarks or registered trademarks of Silicon Laboratories Inc. ARM, CORTEX, Cortex-M3 and THUMB are trademarks or registered trademarks of

ARM Holdings. Keil is a registered trademark of ARM Limited. All other products or brand names mentioned herein are trademarks of their respective holders.

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