Cypress CYW943907AEVAL1F User manual

CYW943907AEVAL1F Evaluation Kit User Guide, Doc. No. 002-18703 Rev. *B 1
CYW943907AEVAL1F
Evaluation Kit User Guide
Doc. No. 002-18703 Rev. *A
Cypress Semiconductor
198 Champion Court
San Jose, CA95134-1709
www.cypress.com

Copyrights
CYW943907AEVAL1F Evaluation Kit User Guide, Doc. No. 002-18703 Rev. *B 2
Copyrights
© Cypress Semiconductor Corporation, 2018. This document is the property of Cypress Semiconductor Corporation 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
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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
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surgical implants), pollution control or hazardous substances management, or other uses where the failure of the device or
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of a device or system whose failure to perform can be reasonably expected to cause the failure of the device or system, or to
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property of their respective owners.

CYW943907AEVAL1F Evaluation Kit User Guide, Doc. No. 002-18703 Rev. *B 3
Contents
CYW943907AEVAL1F ............................................................................................................................................................1
Evaluation Kit User Guide.....................................................................................................................................................1
Contents .................................................................................................................................................................................3
Safety Information..................................................................................................................................................................5
1. Introduction....................................................................................................................................................................6
1.1 CYW943907AEVAL1F EVK Contents...................................................................................................................6
1.2 CYW943907AEVAL1F Board Details....................................................................................................................8
1.3 Modus Toolbox Overview......................................................................................................................................9
1.4 Getting Started ....................................................................................................................................................10
1.5 IOT Resources and Technical Support................................................................................................................10
1.6 Additional Learning Resources............................................................................................................................11
1.7 Document Conventions .......................................................................................................................................11
1.8 Acronyms ............................................................................................................................................................11
2. Software Installation ...................................................................................................................................................12
2.1 System Requirements.........................................................................................................................................12
2.2 Installation Steps.................................................................................................................................................12
3. Kit Operation................................................................................................................................................................15
3.1 Theory of Operation.............................................................................................................................................15
3.2 Onboard Programmer/Debugger and Serial Interface Chip.................................................................................15
3.3 CYW943907AEVAL1F Kit Connection................................................................................................................16
3.4 Building, Programming, and Debugging CYW943907AEVAL1F EVK.................................................................18
4. Hardware......................................................................................................................................................................28
4.1 User Switches......................................................................................................................................................29
4.2 LED .....................................................................................................................................................................29
4.3 Reset Control.......................................................................................................................................................29
4.4 Ethernet...............................................................................................................................................................30
4.5 Micro SD Connector/Slot.....................................................................................................................................32
4.6 JTAG Connector..................................................................................................................................................33
4.7 Connectors..........................................................................................................................................................33
4.8 UART Port Configuration on CYW943907AEVAL1F Kit......................................................................................35
4.9 External ADC.......................................................................................................................................................36
4.10 PWM....................................................................................................................................................................37
5. Code Examples............................................................................................................................................................39

Contents
CYW943907AEVAL1F Evaluation Kit User Guide, Doc. No. 002-18703 Rev. *B 4
5.1 AWSIOTPubSub Project .....................................................................................................................................39
5.2 WiFiScanner........................................................................................................................................................49
Revision History...................................................................................................................................................................50

CYW943907AEVAL1F Evaluation Kit User Guide, Doc. No. 002-18703 Rev. *B 5
Safety Information
The CYW943907AEVAL1F EVK is intended for use as a development platform for hardware or software in a laboratory
environment. The board is an open-system design, which does not include a shielded enclosure. For this reason, the board
may interfere with other electrical or electronic devices in close proximity. In a domestic environment, this product may cause
radio interference. In such cases, take adequate preventive measures. Also, do not use this board near any medical
equipment or RF devices.
Attaching additional wiring to this product or modifying the product operation from the factory default may affect its
performance and cause interference with other apparatus in the immediate vicinity. If such interference is detected, suitable
mitigating measures must be taken.
The CYW943907AEVAL1F EVK contains electrostatic discharge (ESD)-sensitive devices. Electrostatic
charges readily accumulate on the human body and any equipment, and can discharge without detection.
Permanent damage may occur on devices subjected to high-energy discharges. Proper ESD precautions
are recommended to avoid performance degradation or loss of functionality. Store unused
CYW943907AEVAL1F in the protective shipping package.
End-of-Life/Product Recycling
This kit has an end-of-life cycle of five years from the year of manufacturing on the back of the box.
Contact your nearest recycler for discarding the kit.
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 parts.
Handling Boards
CYW943907AEVAL1F boards are sensitive to ESD. Hold the board only by its edges. After removing the board from its box,
place it on a grounded, static-free surface. Use a conductive foam pad if available. Do not slide the board over any surface.
Any physical action on CYW943907AEVAL1F such as changing wires, jumper settings, or measuring voltages can cause
stress on the CYW943907AEVAL1F printed circuit board assembly (PCBA). You must ensure that the PCBA has proper
support on the bottom side to avoid stress on the PCBA when the EVK is in operation.

CYW943907AEVAL1F Evaluation Kit User Guide, Doc. No. 002-18703 Rev. *B 6
1. Introduction
Thank you for your interest in the CYW943907AEVAL1F Evaluation Kit (EVK). The CYW943907AEVAL1F EVK enables
customers to evaluate and develop single-chip Wi-Fi applications using CYW43907 devices.
The CYW943907AEVAL1F EVK can be used either with WICED®Studio™IDE (version 5.0 or later), or ModusToolbox™
IDE (version 1.0 or later) to develop and debug your CYW43907 project. This document covers only the development flow
based on the ModusToolbox IDE. Refer to the equivalent kit user guide at http://www.cypress.com/documentation/development-
kitsboards/cyw943907aeval1f-evaluation-kit for the WICED Studio-based development flow. The CYW943907AEVAL1F EVK
offers footprint-compatibility with Arduino shields. In addition, the kit features an RJ-45 Ethernet connector, a micro-SD-card
slot, and onboard programmer/debugger and serial bridge chip. The CYW943907AEVAL1F EVK supports only 3.3 V as the
operating voltage.
Older revisions of this kit were named BCM943907AEVAL1F_2 and BCM943907AEVAL1F. CYW43907 and BCM43907 refer
to the same device.
The CYW943907AEVAL1F EVK is available through the Cypress Online Store or through our distributors.
1.1 CYW943907AEVAL1F EVK Contents
The CYW943907AEVAL1F EVK includes the following:
▪One CYW943907AEVAL1F Evaluation Board with assembled Arduino headers
▪One USB 2.0 Type-A to Micro-B cable

Introduction
CYW943907AEVAL1F Evaluation Kit User Guide, Doc. No. 002-18703 Rev. *B 7
Figure 1-1. CYW943907AEVAL1F Kit Contents
Inspect the contents of the kit. If you find any part missing, contact your nearest Cypress sales office for assistance:
www.cypress.com/support.
Hardware Not Included with the Kit
The CYW943907AEVAL1F EVK does not come with all the hardware needed to perform the demonstrations documented in
this guide.
The following hardware is not included with this kit:
▪RJ-45 Ethernet cable
▪SD-Card
▪External power supply
▪Dual external antenna
▪Potentiometer
▪Jumper Wires

Introduction
CYW943907AEVAL1F Evaluation Kit User Guide, Doc. No. 002-18703 Rev. *B 8
1.2 CYW943907AEVAL1F Board Details
The CYW943907AEVAL1F board consists of the blocks shown in Figure 1-2 and Figure 1-3.
1. Reset Switch (SW2)
2. RJ-45 Connector (J14)
3. Micro USB (Programming and Debugging) (J5)
4. 5–12 V Power Input (J8)
5. WICED Header (J6)
6. Arduino Header (J13)
7. User Switch 1 (SW3)
8. User Switch 2 (SW1)
9. Arduino Header (J9)
10. PCB Antenna-Main (ANT1)
11. Connector for External Antenna 1 (J1)
12. CYW43907 Type 1GC Module (Murata) (U14)
13. PCB Antenna-Diversity (ANT0)
14. Connector for External Antenna 0 (J2)
15. Onboard /External JTAG Switch (SW4)
16. External JTAG Header (J3)
17. Arduino Header (J10)
18. Arduino Header (J12)
19. External PHY chip (U12) –BCM5241
20. External ADC Chip (U3)
21. µSD Connector/slot (J7) Figure 1-2. CYW943907AEVAL1F Evaluation Board

Introduction
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Figure 1-3. CYW943907AEVAL1F Evaluation Board (Back View)
Figure 1-4. WICED IDE
1.3 Modus Toolbox Overview
ModusToolbox is a set of tools that enable you to integrate Cypress devices into your existing development methodology.
One of the tools is a multi-platform, Eclipse-based Integrated Development Environment (IDE) that supports configuration
and application development, called Modus IDE.
Modus IDE is an installable IDE built on top of the Eclipse framework. It allows you to create and modify designs. The user
interface integrates into Eclipse. As little of the code as possible interfaces with Eclipse to remain as modular as possible.
The IDE provides hooks for launching various tools provided by the Cypress Software Development Kit (SDK).
The Cypress SDK provides the central core of the ModusToolbox IDE. It contains configuration tools, drivers, libraries,
middleware, as well as various utilities, make files, and scripts. You may use one or a few of these tools in any environment
you prefer.
The following shows a high-level view of the tools included in ModusToolbox.

Introduction
CYW943907AEVAL1F Evaluation Kit User Guide, Doc. No. 002-18703 Rev. *B 10
Figure 1-5. ModusToolbox Architecture
See the following documents for more information:
▪ModusToolbox Installation Guide
▪Modus IDE Quick Start Guide
▪Modus IDE Help
▪Configurator Documentation (open from a particular Configurator)
▪WICED Power Logger User Guide
▪Eclipse Documentation
1.4 Getting Started
To quickly learn about the CYW943907AEVAL1F EVK, refer to the CYW943907AEVAL1F Quick Start Guide inside the kit
box.
This guide will help you get acquainted with the CYW943907AEVAL1F EVK:
▪The Software Installation chapter describes the installation of the kit software. This includes extracting the required files
for Modus Toolbox.
▪The Kit Operation chapter describes the major sections of the kit such as the onboard programmer/debugger chip, reset
control, headers, programming and debugging of the kit, SD card interface, and Ethernet interface.
▪The Hardware chapter describes the CYW943907AEVAL1F EVK hardware and its different blocks.
▪The Code Examples chapter describes code examples that will help you understand how to get started with WLAN basic
examples.
1.5 IOT Resources and Technical Support
Cypress provides a wealth of data at www.cypress.com/internet-things-iot to help you select the right IoT device for your
design, and quickly and effectively integrate the device into your design. Cypress provides customer access to a wide range
of information, including technical documentation, schematic diagrams, product bill of materials, PCB layout information, and
software updates. Customers can acquire technical documentation and software from the Cypress Support Community
website (https://community.cypress.com).
For assistance, go to www.cypress.com/support.