Cypress CYW943907AEVAL1F User manual

CYW943907AEVAL1F
Evaluation Kit User Guide
Doc. No. 002-18703 Rev. **
Cypress Semiconductor
198 Champion Court
San Jose, CA95134-1709
Phone (USA): 800.858.1810
Phone (Intnl): +1.408.943.2600
www.cypress.com

Copyrights
CYW943907AEVAL1F Evaluation Kit User Guide, Doc. No. 002-18703 Rev. ** 2
Copyrights
© Cypress Semiconductor Corporation, 2017. 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
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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
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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
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are not designed, intended, or authorized for use as critical components in systems designed or intended for the
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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,
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whose failure to perform can be reasonably expected to cause the failure of the device or system, or to affect its
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Cypress, the Cypress logo, Spansion, the Spansion logo, and combinations thereof, WICED, PSoC, CapSense,
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claimed as property of their respective owners.

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Contents
Safety Information..................................................................................................................................................................5
1. Introduction....................................................................................................................................................................6
1.1 CYW943907AEVAL1F EVK Contents...................................................................................................................6
1.2 CYW943907AEVAL1F Board Details....................................................................................................................8
1.3 WICED Studio Development System Overview.....................................................................................................9
1.4 WICED Studio Code Examples...........................................................................................................................10
1.5 Kit Code Examples..............................................................................................................................................12
1.6 Getting Started ....................................................................................................................................................12
1.7 IOT Resources and Technical Support................................................................................................................12
1.8 Additional Learning Resources............................................................................................................................12
1.9 Document Conventions.......................................................................................................................................13
1.10 Acronyms.............................................................................................................................................................13
2. Software Installation ...................................................................................................................................................14
2.1 Before You Begin ................................................................................................................................................14
2.2 Install Software....................................................................................................................................................14
3. Kit Operation................................................................................................................................................................18
3.1 Theory of Operation.............................................................................................................................................18
3.2 On-board programmer/Debugger and Serial interface Chip................................................................................18
3.3 CYW943907AEVAL1F Kit Connection ................................................................................................................19
3.3.1 Verifying Driver Installation.....................................................................................................................19
3.3.2 Troubleshooting......................................................................................................................................20
3.3.3 External Power Supply ...........................................................................................................................20
3.4 Building, Programming, and Debugging CYW943907AEVAL1F EVK.................................................................21
3.4.1 Building and Programming a Project for CYW943907AEVAL1F in WICED Studio IDE..........................21
3.4.2 Troubleshooting......................................................................................................................................24
3.4.3 Debugging a Project using Breakpoints..................................................................................................25
4. Hardware......................................................................................................................................................................29
4.1 Bootstrap.............................................................................................................................................................29
4.2 User Switches......................................................................................................................................................30
4.3 LED .....................................................................................................................................................................30
4.4 Reset Control.......................................................................................................................................................31
4.5 Ethernet...............................................................................................................................................................32
4.6 Micro SD Connector/Slot.....................................................................................................................................34
4.7 JTAG Connector..................................................................................................................................................35
4.7.1 On-board Programmer/Debugger and Serial Interface Chip...................................................................35
4.7.2 External JTAG ........................................................................................................................................35

Contents
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4.8 Connectors..........................................................................................................................................................36
4.8.1 WICED Header.......................................................................................................................................36
4.8.2 Arduino-Compatible Headers .................................................................................................................38
4.9 UART Port Configuration on CYW943907AEVAL1F Kit......................................................................................39
4.10 External ADC.......................................................................................................................................................39
4.11 PWM....................................................................................................................................................................40
5. Code Examples............................................................................................................................................................42
5.1 Using Code Examples.........................................................................................................................................42
5.2 GPIO ...................................................................................................................................................................42
5.2.1 Project Description..................................................................................................................................42
5.2.2 Hardware Connections...........................................................................................................................42
5.2.3 Verify Output...........................................................................................................................................43
5.3 Config_join_ping..................................................................................................................................................43
5.3.1 Project Description..................................................................................................................................43
5.3.2 Hardware Connections...........................................................................................................................43
5.3.3 Flow Chart ..............................................................................................................................................44
5.3.4 Verify Output...........................................................................................................................................45
5.4 Adc_measure ......................................................................................................................................................47
5.4.1 Project Description..................................................................................................................................47
5.4.2 Hardware Connections...........................................................................................................................47
5.4.3 Flow Chart ..............................................................................................................................................48
5.4.4 Access Point Credentials........................................................................................................................49
5.4.5 Verify Output...........................................................................................................................................49
5.5 Publish_subscribe_aws.......................................................................................................................................50
5.5.1 Project Description..................................................................................................................................50
5.5.2 Hardware Connections...........................................................................................................................51
5.5.3 Flow Chart ..............................................................................................................................................51
5.5.4 Verify Output...........................................................................................................................................52
Revision History...................................................................................................................................................................59
Document Revision History ...........................................................................................................................................59

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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.
Due to this reason, the board 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, 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 contains electrostatic discharge (ESD)-sensitive devices. Electrostatic
charges readily accumulate on the human body andany 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 mentioned 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 the user 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.

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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 uses WICEDStudio 5.0 (or later) to develop and debug your CYW43907 project.
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 the same kit were named BCM943907AEVAL1F_2 and BCM943907AEVAL1F. CYW43907 and BCM43907
refer to the same device.
WICED Studio 5.0 (or later) supports application development using a WICED development board
(CYW943907AEVAL1F). The development system is compatible with the Windows, OS X, and Linux operating
systems. This document provides instructions for utilizing peripherals, such as I2C or SPI, in WICED sample
applications using the WICED StudioIntegrated Development Environment (IDE).
Note: This document applies to WICED Studio 5.0 (or later).
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

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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

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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. RJ45 Connector (J14)
3. Micro USB (Programming and Debugging) (J5)
4. 5-12V 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. On-board /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. SD Connector/slot (J7) Figure 1-2. CYW943907AEVAL1F Evaluation Board

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Figure 1-3. CYW943907AEVAL1F Evaluation Board (Back View)
1.3 WICED Studio Development System Overview
WICED Studio 5.0 (or later) supports application development using the WICED Evaluation Board
(CYW943907AEVAL1F EVK).Tabs and their location in the WICED IDE are as shown in Figure 1-4.
Figure 1-4 illustrates the following:
1. Edit your application firmware.
2. Help Window that contains instructions on building and downloading applications.
3. Explore existing applications/firmware and library of the Software Development Kit (SDK).
4. View Build messages in the Console window.
5. Create and edit Make Targets for the platform to build your Application/Project.

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Figure 1-4. WICED IDE
1.4 WICED Studio Code Examples
WICED Studio includes libraries and code examples supporting both Bluetooth and Wi-Fi platforms. Selecting
the 43xxx_Wi-fi Filter will show only Wi-Fi platform related files in the project explorer as shown in Figure 1-5.
Application examples can speed up the design process byserving as templates for development. Code examples
are located under the apps category (in the Project explorer window), as shown in Figure 1-6. Code examples
under apps are further grouped into demo, snip, test, waf (WICED Application Framework), and wwd (WICED
Wi-Fi Driver Application) directories.
The demo directory contains applications that combine various WICED features into a single application. The
snip directory contains application snippets that demonstrate how to use various WICED libraries and API
functions. The test directory contains applications that are used for simple test and utility. The waf directory
contains applications that are part of WICED Application framework, for instance, the bootloader. The wwd
directory contains applications that are developed using the low level wwd API calls and do not rely on higher
level WICED APIs. Located within each subdirectory in the apps folder is a README.txt that lists and
summarizes the applications located within the folder. It should also be noted that not all applications are
supported in all platforms. The snip directory contains a README.txt with a matrix on what applications are
supported in what platforms. For more details on the WICED software stack and APIs, review the Application
notes and documents available in the doc folder <WICED SDK installation folder>/WICED-Studio-5.0/43xxx_Wi-
Fi/doc. WICED-QSG204 available in the same path is a good document to start with.
1
4
5
3
2

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Figure 1-5. Filter for Wi-Fi Code Example in WICED Studio
Figure 1-6. Code Examples under apps Category

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1.5 Kit Code Examples
In addition to the examples available in WICED Studio, this EVK includes a few additional code examples, which
can be used to quickly evaluate CYW43907 using this kit. These examples are described in the Code Examples
chapter.
1.6 Getting Started
To learn quickly about CYW943907AEVAL1F EVK, refer to the CYW943907AEVAL1F Quick Start Guide inside
the kit box.
This user guide will help you get acquainted with CYW943907AEVAL1F EVK:
The Software Installation chapter describes the installation of the kit software. This includes extracting the
required files for WICED Studio 5.0 (or later).
The Kit Operation chapter describes the major sections of the kit such as the on-board 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.
1.7 IOT Resources and Technical Support
Cypress provides a wealth of data at www.cypress.com/internet-things-iot to help you to 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, or contact our customer support at [phone] Ext. 2 (in
the USA), or [phone] Ext. 2 (International).
1.8 Additional Learning Resources
Visit CYW943907AEVAL1F EVK and CYW43907 for additional learning resources including datasheets and
application notes.

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1.9 Document Conventions
Table 1-1. Document Conventions for Guides
Convention
Usage
Courier New
Displays file locations, user entered text, and source code:
C:\ ...cd\icc\
Italics
Displays file names and reference documentation.
[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
Text in gray boxes
Describes Cautions or unique functionality of the product.
1.10 Acronyms
Table 1-2. List of Acronyms used in this Document
Acronym
Definition
SPI
Serial Peripheral Interface
EVK
Evaluation Kit
SDK
Software Development Kit
WICED
Wireless Internet Connectivity for Embedded Devices
JTAG
Joint Test Action Group
I2C
Inter-Integrated Circuit
MQTT
Message Queue Telemetry Transport
POR
Power-on-Reset
PMU
Power Management Unit
VTRIM
Voltage Trimming
LPO
Low Power Oscillator
GPIO
General Purpose Input Output
UART
Universal Asynchronous Receiver/Transmitter
AWS
Amazon Web Services
IDE
Integrated Development Environment
WLAN
Wireless Local Area Network

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2. Software Installation
This chapter describes the steps to install the software tools and packages on a PC for using the
CYW943907AEVAL1F EVK. This includes the WICED IDE in which the projects will be built and used for
programming.
2.1 Before You Begin
All Cypress software installations require administrator privileges. Ensure that you have the required privileges
on the system for successful installation. Before you install the kit software, close any other Cypress software
that is currently running. Ensure you have installed WICED Studio 5.0 (or later).
2.2 Install Software
Follow these steps to install the CYW943907AEVAL1F Evaluation Kit software:
1. Download and install WICED Studio 5.0 (or later) from this web page. Following is a screenshot of the
Installer Window when opened.

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2. Select two Folders, one for the IDE and the other for the SDK. The folder for the SDK contains the Framework
for developing Wi-Fi applications.
3. As a last step in installation, installer will ask to select between Wi-Fi and Bluetooth platform. Select
43xxx_Wi-Fi as default.
4. Download the CY943907AEVAL1F_KitPackage.zip software from here. The software is available as a zip
file.
5. Locate the WICED Wi-Fi-SDK directory in your PC. The default location is C:\Users\<user
name>\Documents\WICED-Studio-5.0\43xxx_Wi-Fi, as shown in Figure 2-1. However, it may be in a different
location depending on the path you choose when installing WICED Studio.
Figure 2-1. WICED SDK Directory

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6. Copy the CY943907AEVAL1F_KitPackage.zip file and extract to a temporary location such as “temp”. The
zip file will extract two directories called “apps” and “resources” inside the
temp/CYW943907AEVAL1F_KitPackage/ directory. Select both of them, Copy (CTRL+C) and paste
(CTRL+V) into C:\Users\<user name>\Documents\WICED-Studio-5.0\43xxx_Wi-Fi. Choose the option to
merge with existing folders.
Alternately, copy the CY943907AEVAL1F_KitPackage.zip to the location specified above and use the
Extract Here option if you have 7-Zip or other unzip utility. The zip file should be merged to the existing
folders. If WICED Studio 5.0 (or later) is opened with 43xxx_Wi-Fi as the WICED Filter (Figure 1-5), then the
new folders appear as shown in Figure 2-2.
Figure 2-2. Setup Package in WICED Studio 5.0 (or later)
7. The CY943907AEVAL1F_KitPackage.zip package contains three code examples which add to the existing
set of examples available in WICED Studio 5.0 or later. Unzipping creates the kits directory under apps, and
adc_measure in the resources\apps directory.
After unzipping, if the projects are not visible in WICED Studio 5.0 (or later), then right-click the top most
folder (43xxx_Wi-Fi) and click Refresh, as shown in Figure 2-3.

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Figure 2-3. Refresh Top Folder

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3. Kit Operation
This chapter introduces you to the CYW943907AEVAL1F EVK and the features that will be used as part of Kit
operation. Features such as Wi-Fi connection and programming/debugging are discussed in this chapter. The
chapter also describes the USB-UART that can be used to communicate with the CYW43907 device on this EVK.
3.1 Theory of Operation
Figure 3-1 illustrates the block diagram of the CYW943907AEVAL1F EVK. This board contains
BCM943907/CYW43907 based SiP which is a Type1GC Wireless module. This module is an embedded network
controller solution from Murata. This board also contains a USB-Serial interface / JTAG programmer / debugger.
This board features Arduino form-factor compatible headers, which enables Arduino shields to be plugged on
top, extending its capabilities. This board also features two user switches, two user LEDs, an RJ-45 connector
for Ethernet, and a reset switch for the wireless module.
Figure 3-1. Block Diagram of CYW943907AEVAL1F EVK
3.2 On-board programmer/Debugger and Serial interface Chip
An FT-2232-HQ chip is used for onboard programming, debugging and USB-Serial functionality. It connects to
the computer over a USB interface and connects to the CYW43907 based SiP module over JTAG and UART
pins. Alternately, you can use the External JTAG connector (J3) along with switch SW4 (in all closed positions)
in order to use JTAG from connectors such as Olimex.

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3.3 CYW943907AEVAL1F Kit Connection
The CYW943907AEVAL1F EVK can be powered by the following options:
External power supply
USB
When using external power supply, you should use a 5 V –12 V, 2A power supply with 2.1 mm DC Jack (center
pin positive). When powered from USB, there are two logical USB devices: a USB-JTAG device and a USB-
UART device. Drivers for the CYW943907AEVAL1F EVK are automatically installed during the WICED SDK
installation process. When you connect the kit for first time to your PC, it will initiate the driver search as shown
in Figure 3-2.
Figure 3-2. Driver Software Installation
3.3.1 Verifying Driver Installation
To verify the successful completion of driver installation, perform these steps:
1. Right-click My Computer > Properties.
2. In the System Properties window, select Device Manager.
a. The WICED USB Serial Port is listed under Ports (COM & LPT) as shown in Figure 3-3.
b. The WICED USB JTAG Port is listed under WICED USB JTAG Devices as shown in Figure 3-3.
In Figure 3-3, the Device Manager window identifies the WICED USB Serial COM port as COMXX. The assigned
port number varies between systems. If the device displays two WICED USB Serial Ports (WICED USB Serial
port and WICED USB JTAG Port) instead of one, then follow the link mentioned in this post.

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Figure 3-3. Verifying Device Driver Installation
3.3.2 Troubleshooting
If an error occurred during the automatic driver installation process, the driver may be manually installed from the
following directory: <WICED-SDK>\Drivers\Windows\wiced_uart.
If the CYW943907AEVAL1F EVK does not appear in the Device Manager, verify that the +3V3 LED is turned
ON and check the USB cable.
3.3.3 External Power Supply
The CYW943907AEVAL1F EVK can be supplied using an external power supply (5V-12V, 2A), using a 2.5 mm
DC Jack with center pin positive. When using external power supply and also connecting a USB cable (for
programming/debugging or USB-UART), the voltage on the external power supply should be greater than that of
the USB supply, if not the kit will be actually sourcing its power from USB rather than the external power supply.