1. Getting Started

Hardware

To set up the hardware for the CPT112S SLEXP8008A 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.

Figure 1.1. Hardware Setup

Software

The first step to get started with your new CPT112S SLEXP8008A kit is to go to

http://www.silabs.com/simplicity

The Simplicity Studio software package contains all the tools, drivers, software examples, and documentation needed to use the

CPT112S Capacitive Sense Evaluation Board. The board comes preconfigured for a Touch Demo for use with the acrylic overlay. The

demo enables the board to recognize touch events and touch release events. Every time a touch is sensed, the touch is communicated

on the I2C interface and the buzzer will sound.

After downloading the latest version of Simplicity Studio and installing the software:

1. 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].

Click [OK].

2. Click the [Refresh detected hardware] button.

3. Select [CPT112S] under [Detected Hardware]. On the board, a successful USB connection is established when the LED next to

the USB connector turns on.

4. Click the [Capacitive Sense Profiler] tile. This utility graphs touch-related data and events received from the CPT112S

SLEXP8008A for evaluation and analysis.

UG133: CPT112S SLEXP8008A Kit User's Guide

Getting Started

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