Cypress Semiconductor CapSense CY8CKIT-024 Bedienungsanleitung

CY8CKIT-024

CapSense®Proximity Shield Kit Guide

Doc. No. 001-92568 Rev. *B

Cypress Semiconductor

198 Champion Court

San Jose, CA 95134-1709

http://www.cypress.com

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Copyrights

CY8CKIT-024 CapSense®Proximity Shield Kit Guide, Doc. No. 001-92568 Rev. *B 2

and its subsidiaries, including Spansion LLC (“Cypress”). This document, including any software or firmware included or

referenced in this document (“Software”), is owned by Cypress under the intellectual property laws and treaties of the

United States and other countries worldwide. Cypress reserves all rights under such laws and treaties and does not, except

as specifically stated in this paragraph, grant any license under its patents, copyrights, trademarks, or other intellectual

property rights. If the Software is not accompanied by a license agreement and you do not otherwise have a written

agreement with Cypress governing the use of the Software, then Cypress hereby grants you a personal, non-exclusive,

nontransferable license (without the right to sublicense) (1) under its copyright rights in the Software (a) for Software

provided in source code form, to modify and reproduce the Software solely for use with Cypress hardware products, only

internally within your organization, and (b) to distribute the Software in binary code form externally to end users (either

directly or indirectly through resellers and distributors), solely for use on Cypress hardware product units, and (2) under

those claims of Cypress’s patents that are infringed by the Software (as provided by Cypress, unmodified) to make, use,

distribute, and import the Software solely for use with Cypress hardware products. Any other use, reproduction,

modification, translation, or compilation of the Software is prohibited.

TO THE EXTENT PERMITTED BY APPLICABLE LAW, CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS

OR IMPLIED, WITH REGARD TO THIS DOCUMENT OR ANY SOFTWARE OR ACCOMPANYING HARDWARE,

INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A

PARTICULAR PURPOSE. To the extent permitted by applicable law, Cypress reserves the right to make changes to this

document without further notice. Cypress does not assume any liability arising out of the application or use of any product

or circuit described in this document. Any information provided in this document, including any sample design information

or programming code, is provided only for reference purposes. It is the responsibility of the user of this document to

properly design, program, and test the functionality and safety of any application made of this information and any resulting

product. Cypress products are not designed, intended, or authorized for use as critical components in systems designed or

intended for the operation of weapons, weapons systems, nuclear installations, life-support devices or systems, other

medical devices or systems (including resuscitation equipment and surgical implants), pollution control or hazardous

substances management, or other uses where the failure of the device or system could cause personal injury, death, or

property damage (“Unintended Uses”). A critical component is any component of a device or system whose failure to

perform can be reasonably expected to cause the failure of the device or system, or to affect its safety or effectiveness.

Cypress is not liable, in whole or in part, and you shall and hereby do release Cypress from any claim, damage, or other

liability arising from or related to all Unintended Uses of Cypress products. You shall indemnify and hold Cypress harmless

from and against all claims, costs, damages, and other liabilities, including claims for personal injury or death, arising from

or related to any Unintended Uses of Cypress products.

Cypress, the Cypress logo, Spansion, the Spansion logo, and combinations thereof, WICED, PSoC, CapSense, EZ-USB,

F-RAM, and Traveo are trademarks or registered trademarks of Cypress in the United States and other countries. For a

more complete list of Cypress trademarks, visit cypress.com. Other names and brands may be claimed as property of their

respective owners.

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CY8CKIT-024 CapSense®Proximity Shield Kit Guide, Doc. No. 001-92568 Rev. *B 3

Contents

1. Introduction....................................................................................................................................................................6

1.1 Kit Contents...........................................................................................................................................................6

1.2 Getting Started ......................................................................................................................................................7

1.2.1 Beginner’s Resources...............................................................................................................................7

1.2.2 Hardware Requirements...........................................................................................................................8

1.2.3 Software Requirements............................................................................................................................8

1.2.4 Application Notes and Projects.................................................................................................................9

1.3 Technical Support..................................................................................................................................................9

1.4 Acronyms...............................................................................................................................................................9

1.5 Document Conventions.......................................................................................................................................10

2. Kit Hardware ................................................................................................................................................................11

2.1 Board Details.......................................................................................................................................................11

2.2 Theory of Operation.............................................................................................................................................13

2.2.1 Principle of Capacitive Proximity Sensing...............................................................................................13

2.2.2 CY8CKIT-024 System ............................................................................................................................14

2.3 Functional Description.........................................................................................................................................14

2.3.1 Sensor Pattern........................................................................................................................................14

2.3.2 Arduino-Compatible Headers .................................................................................................................16

2.3.3 Hatch Pattern..........................................................................................................................................18

2.3.4 Slide Switch SW1 ...................................................................................................................................18

2.3.5 CTANK Capacitor ......................................................................................................................................18

2.3.6 LEDs.......................................................................................................................................................19

3. Example Projects.........................................................................................................................................................21

4. Design Support............................................................................................................................................................22

Appendix A: Schematics, Layout, and BOM......................................................................................................................23

A.1. Schematics..........................................................................................................................................................23

A.2. Board Layout.......................................................................................................................................................26

A.3. Bill of Materials....................................................................................................................................................28

Revision History...................................................................................................................................................................29

Document Revision History ...........................................................................................................................................29

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CY8CKIT-024 CapSense®Proximity Shield Kit Guide, Doc. No. 001-92568 Rev. *B 4

Safety Information

The CapSense® Proximity Shield Kit (CY8CKIT-024) is intended for use as a hardware or software development platform in

a laboratory environment. This product is an open-system design, which does not include a shielded enclosure, so it may

cause interference with other electrical or electronic devices in close proximity. In a domestic environment, this product may

cause radio interference. In such cases, you may be required to take adequate preventive measures. Also, this product

should not be used near any medical equipment or RF devices.

Attaching additional wiring to this product or modifying the product operation from the factory default settings may affect its

performance and cause interference with other apparatus in the immediate vicinity. If such interference is detected, suitable

mitigating measures should be taken.

The CapSense Proximity Shield Kit (CY8CKIT-024), as shipped from the factory, has been verified to meet the

requirements of CE as a Class A product.

CY8CKIT-024 contains ESD-sensitive devices. Electrostatic charges readily accumulate on the

human body and any equipment and can discharge without detection. Permanent damage may

occur in devices subjected to high-energy discharges. Proper ESD precautions are recommended

to avoid performance degradation or loss of functionality. Store unused CY8CKIT-024 boards in the

protective shipping package.

End-of-Life / Product Recycling

This product has an end-of-life cycle five years from the date of manufacture mentioned on the back

of the box. Please contact your nearest recycler for discarding the product.

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Safety Information

CY8CKIT-024 CapSense®Proximity Shield Kit Guide, Doc. No. 001-92568 Rev. *B 5

General Safety Instructions

ESD Protection

ESD can damage boards and associated components. Cypress recommends that you perform procedures only at an ESD

workstation. If an ESD workstation is not available, use appropriate ESD protection by wearing an antistatic wrist strap

attached to the chassis ground (any unpainted metal surface) on the board when handling these parts.

Handling Boards

CY8CKIT-024 boards are sensitive to ESD. Hold the board only by its edges. Do not slide the board over any surface

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CY8CKIT-024 CapSense®Proximity Shield Kit Guide, Doc. No. 001-92568 Rev. *B 6

1. Introduction

Thank you for your interest in the CapSense Proximity Shield Kit (CY8CKIT-024). This kit is intended to demonstrate the

proximity-sensing capabilities of the CapSense technology in Cypress’s PSoC®products.

This kit supports the following proximity-sensing features:

Large proximity-sensing distance: The kit has a proximity loop with a 10.3-cm diagonal, which, when interfaced with the

CY8CKIT-040 kit or CY8CKIT-042 kit, provides a proximity-sensing distance of approximately 10 cm.

Horizontal and vertical gesture detection: The kit includes four 5.5-cm-long proximity sensors to detect horizontal and

vertical gestures at a distance of 2 cm.

Liquid tolerance: The kit includes a slide switch to select between ground and driven shield for the shield loop on the

top layer. The driven shield, along with the recommended CapSense configuration, provides liquid-tolerant proximity

sensing. Use the dropper provided with the kit to evaluate the liquid-tolerant performance.

Along with proximity sensors and the shield electrode, this kit includes six LEDs, five of which are arranged in a “+” layout to

indicate the proximity-sensing distance and horizontal and vertical gesture detection with visual effects.

This kit guide provides details on the kit contents, hardware, schematics, and BOM. See AN92239 –Proximity Sensing with

CapSense for example projects.

1.1 Kit Contents

This kit contains the following, as shown in Figure 1-1:

CapSense Proximity Shield

Quick Start Guide

Liquid Dropper

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Introduction

CY8CKIT-024 CapSense®Proximity Shield Kit Guide, Doc. No. 001-92568 Rev. *B 7

Figure 1-1: Kit Contents

Inspect the contents of the kit. If you find any part missing, contact your nearest Cypress sales office for help. Go to

http://www.cypress.com/go/support for more information on Cypress sales offices and support.

1.2 Getting Started

This section provides details on the hardware requirements, software requirements, and associated application notes for

using the CY8CKIT-024 kit with various PSoC 4 devices. Refer to the kit web page for the latest information on using this kit

with various PSoC 4 devices. The web page will be updated as new PSoC devices and development kits compatible with

are released to the market.

1.2.1 Beginner’s Resources

An overview of PSoC devices is available at http://www.cypress.com/psoc. The web page includes a list of PSoC device

families, integrated design environments (IDEs), and associated development kits. In addition, refer to the following

documents to get started with PSoC 4 devices and CapSense technology:

AN79953 –Getting Started with PSoC® 4

Getting Started with CapSense®

PSoC® 4 CapSense® Design Guide

AN92239 –Proximity Sensing with CapSense®

PSoC Creator 101 Training series

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Introduction

CY8CKIT-024 CapSense®Proximity Shield Kit Guide, Doc. No. 001-92568 Rev. *B 8

1.2.2 Hardware Requirements

CY8CKIT-024 plugs into any Arduino™hardware-compatible development platforms from Cypress. AN92239 provides

example projects targeting the CY8CKIT-040 PSoC 4000 Pioneer Development Kit and CY8CKIT-042 PSoC4 Pioneer Kit.

Figure 1-2 and Figure 1-3 show how the CY8CKIT-024 kit connects to the CY8CKIT-040 and CY8CKIT-042 kits

respectively.

Figure 1-2: CY8CKIT-024 Connected to CY8CKIT-040

Figure 1-3: CY8CKIT-024 Connected to CY8CKIT-042

You can purchase the CY8CKIT-040 kit from http://www.cypress.com/CY8CKIT-040 and the CY8CKIT-042 kit from

http://www.cypress.com/CY8CKIT-042.

1.2.3 Software Requirements

The CY8CKIT-024 kit does not have any programmable/configurable device onboard, so it does not need any software for

configuration. However, the PSoC device present on baseboards, such as CY8CKIT-040 or CY8CKIT-042, requires

firmware, which you can develop with the PSoC Creator IDE (Version 3.0 SP1 or later).

1.2.3.1 PSoC Creator

PSoC Creator allows concurrent hardware and application firmware design of PSoC 3, PSoC 4, and PSoC 5LP systems.

PSoC systems are designed using classic, familiar, schematic-capture technology supported by pre-verified, production-

ready PSoC Components™.

PSoC Components are analog and digital virtual chips represented by icons that you can drag and drop into a design and

configure to suit a broad array of application requirements. You can configure each Component in the rich, mixed-signal

Cypress Component Catalog with the Component Customizer tool. These Components include a full set of dynamically

generated API libraries. After you have configured the PSoC system, you can write, compile, and debug the firmware within

PSoC Creator, or export the firmware to other IDEs such as those from IAR, Keil, and Eclipse.

You can download the latest version of the PSoC Creator software from http://www.cypress.com/psoccreator. Refer to the

Release Notes for the minimum and recommended system requirements.

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Introduction

CY8CKIT-024 CapSense®Proximity Shield Kit Guide, Doc. No. 001-92568 Rev. *B 9

1.2.3.2 PSoC Programmer and Bridge Control Panel

The PSoC Programmer software is used to program the PSoC devices on the CY8CKIT-040 kit and CY8CKIT-042 kit with

hex files. The Bridge Control Panel (BCP) software is used to view the CapSense sensor data such as raw count, baseline,

and difference count. The BCP software is installed along with PSoC Programmer. You can download PSoC Programmer

at http://www.cypress.com/go/psocprogrammer.

1.2.4 Application Notes and Projects

AN92239 contains example projects that demonstrate the following features of the CY8CKIT-024 kit:

Large proximity-sensing distance (approximately 10 cm)

Liquid-tolerant proximity sensing

Gesture detection based on proximity sensing

See the Example Projects section in this application note for details.

1.3 Technical Support

For assistance, go to our support web page (http://www.cypress.com/support) or contact our customer support at +1(800)

541-4736 Ext. 2 (in the USA), or +1 (408) 943-2600 Ext. 2 (International).

1.4 Acronyms

Table 1-1: Acronym Definitions

Acronym

Definition

BCP

Bridge Control Panel

finger capacitance

parasitic capacitance

ENIG

electroless nickel immersion gold

GND

Ground

IDE

integrated design environment

SPDT

single pole, dual throw

Introduction

CY8CKIT-024 CapSense®Proximity Shield Kit Guide, Doc. No. 001-92568 Rev. *B 10

1.5 Document Conventions

Table 1-2: Document Conventions

Convention

Usage

Courier New

Displays file locations, user-entered text, and source code:

C:\ ...cd\icc\

Italics

Displays file names and reference documentation:

Read about the sourcefile.hex file in the PSoC Designer™User Guide.

[Bracketed, Bold]

Displays keyboard commands in procedures:

[Enter] or [Ctrl] [C]

File > Open

Represents menu paths:

File > Open > New Project

Bold

Displays commands, menu paths, and icon names in procedures:

Click the File icon and then click Open.

Times New Roman

Displays an equation:

2 + 2 = 4

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