Cypress MB9B160R Series User manual

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www.cypress.com Document No. 002-04461 Rev. *B 1
AN204461
FM4 WLAN Solution WithWireless LAN Module Demo Operation Manual
Associated Part Family:
Series Name
Product Number
MB9B160R
MB9B360R
MB9B460R
MB9B560R
MB9BF168M/N/R
MB9BF368M/N/R
MB9BF468M/N/R
MB9BF568M/N/R
This demo operation manual describes the demo operations for controlling the wireless LAN module and making a
wireless LAN connection with a PC, smartphone and tablet utilizing the fast processing and SD card interface
functions of the FM4 family.
Contents
1Introduction...............................................................1
2Wireless LAN Demo System ....................................2
2.1 System Configuration ......................................2
2.2 What is a Wireless LAN?.................................3
2.3 Overview of Demo System ..............................8
3Hardware Overview................................................15
3.1 Hardware Configuration.................................15
3.2 Detailed Specifications ..................................18
4Software Overview .................................................20
4.1 Software Configuration..................................20
4.2 Detailed Specifications ..................................25
4.3 Demo Software..............................................41
5Other ......................................................................45
6Document History...................................................46
1 Introduction
This demo operation manual describes the demo operations for controlling the wireless LAN module and making a
wireless LAN connection with a PC, smartphone and tablet utilizing the fast processing and SD card interface
functions of the FM4 family.
The fast processing of FM4 enables TCP/IP protocol stack processing and Web server functions in a wireless LAN
connection environment with only simple configuration of the FM4 and the wireless LAN module.
When networking via wireless LAN with consumer equipment that is not connected to a network, or with industrial
equipment that is connected to a network via wired LAN, the challenge is to maintain the network environment at low
cost.
In order to address this challenge, it is necessary to minimize the costs for facilities and components and study the
most suitable system performance and features for applications.
We would like to encourage you to consider this solution as an idea for solving this challenge.
This demo operation manual describes a solution for performing network communication by installing a wireless LAN
module evaluation board made by TAIYO YUDEN CO., LTD. (hereafter called TAIYO YUDEN) into an FM4-mounted
board (SK-FM4-U120-9B560).
The part number of the FM4 mounted on the SK-FM4 U120-9B560 is the following.
• Part Number: MB9BF568R
*The photos of the wireless LAN module made by TAIYO YUDEN used in this document may differ from the actual
product.
Please consult TAIYO YUDEN CO.,LTD for details about the wireless LAN module.
The URLs given in this document are valid at the time of this writing. Those URLs are subject to change without
notice.

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2 Wireless LAN Demo System
2.1 System Configuration
The following shows the system configuration of the wireless LAN demo system.
Overview
This demo system allows you to connect a device that has wireless LAN capability to the FM4 evaluation board with
wireless LAN module via an access point over a wireless LAN, to connect to the network from a device running a
Web browser to a Web server running on the FM4 evaluation board with wireless LAN module, and to display
contents, download files, and control the FM4 evaluation board.
Figure 1. Wireless LAN Demo System Configuration

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2.2 What is a Wireless LAN?
This section describes a wireless LAN.
“Wireless LAN” refers to a LAN (Local Area Network) that transmits/receives data via wireless communication.
It is no exaggeration to say that wireless LAN is the IEEE 802.11 standard, because IEEE 802.11-related products
are so pervasive at present.
The transmission rate of wireless LAN is dramatically improving as technology advances.
Figure 2. History of IEEE 802.11 Standard
1. *For IEEE 802.11n, the transmission rate increases with the number of MIMOs (antennas).
2. *At IEEE 802.11n 20 MHz, the transmission rate depends on the GI (Guard Interval) value.
3. *This wireless LAN demo system is set to 20 MHz/ch GI = 400 ns.
The following transmission standards for wireless LAN are supported by this wireless LAN demo system.
−IEEE 802.11b
−IEEE 802.11g
−IEEE 802.11n
The following security standards for wireless LAN are supported by this wireless LAN demo system.
−IEEE 802.11 (WEP)
−IEEE 802.11i draft (WPA-PSK)
−IEEE 802.11i (WPA2-PSK)
Wireless LAN uses the 2.4 GHz band, but the number of available channels varies by country.
This wireless LAN demo system is regulated to use ch11 for use in the United States.
0
20
40
60
80
100
120
140
160
1997 1999 2003 2009
Mbps
IEEE 802.11 IEEE 802.11b
IEEE 802.11g
IEEE 802.11n40MHz/ch (*1)
IEEE 802.11n20MHz/ch (*1) (*2) (*3)
IEEE 802.11n20MHz/ch (*1) (*2)
[Year]

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2.2.1 Connection Methods
This section describes modes that are available on this demo system as methods of connecting through wireless
LAN.
[Infrastructure Mode]
Method by which data communication is performed between wireless LAN devices via a repeater called an access
point.
With this method, a wireless LAN device connects to the access point first and then establishes a wireless
transmission path regardless of whether there is another party to perform data communication with.
Figure 3. Infrastructure Mode
[Ad Hoc Mode]
Method by which data communication is performed between wireless LAN devices directly.
With this method, it is not necessary to install an access point.
This mode uses standards up to 11b. It is not regulated by the 11g or 11n standards, and is used as a vendor-
dependent function.
Figure 4. Ad Hoc Mode
[Micro AP Mode]
Method by which wireless LAN devices that have access point capability connect via P2P and perform data
communication directly.
Although the name of this mode may differ depending on the company, it shall be called Micro AP mode in this
document.
With this method, it is not necessary to install an access point.

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Figure 5. Micro AP Mode
2.2.2 Encryption Methods
This section describes the modes that are available on this demo system as encryption methods for securing a
wireless LAN.
[WEP]
WEP is an encryption method based on the RC4 encryption algorithm. Currently, serious vulnerabilities have been
found in WEP, so it should not be used.
WEP has a 40-bit mode and a 10-bit mode. These key sizes are fixed (5 and 13 characters, respectively).
[TKIP]
TKIP is an encryption method based on the RC4 encryption algorithm. Although it corrects the vulnerabilities that
exist in WEP, it is equivalent to WEP as an encryption method. If available, AES-CCMP, which is described in the
next section, should be used.
TKIP generates a PMK (256-bit) from a passphrase of any length specified by the user (max. 32 bytes in this wireless
LAN demo system), and uses it as the material for keys.
[AES-CCMP]
AES-CCMP is an encryption method based on the AES encryption algorithm. AES-CCMP is designated as the
standard encryption algorithm of the United States.
On the setting screen of the wireless LAN equipment, it is often displayed as "CCMP", "AES-CCM", or simply "AES".
The method of generating the passphrase and PMK in AES-CCMP is the same as TKIP.

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2.2.3 Authentication Methods
This section describes the modes that are available on this demo system as authentication methods for securing a
wireless LAN.
[Open Authentication (No Authentication)]
Figure 6. Open Authentication (No Authentication)]
This method is also called Open System authentication. This always returns “authentication successful” to
authentication requests from wireless LAN equipment. Basically, there is no authentication.
Note that the Open Authentication is used when WEP is used as the encryption method. Shared-key authentication
used to be designated as the authentication method for WEP. However, since a man-in-the-middle attack
vulnerability that compromises security has been found in this method, no authentication is recommended now
(However, using WEP is not recommended).
Therefore, Shared-key authentication is not supported by this wireless LAN demo system.
[WPA-PSK]
Figure 7. WPA-PSK

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WPA-PSK is the authentication method that was released in the IEEE 802.11i draft. It is an interim measure until
WPA2 is specified.
In terms of encryption methods, you can choose between TKIP and AES-CCMP. In WPA-PSK, support for TKIP is
required. On the other hand, support for AES-CCMP is not required.
[WPA2-PSK]
Figure 8. WPA2-PSK
WPA2-PSK is the authentication method that was established by IEEE 802.11i. Since the interim measure of WPA-
PSK has been officially defined, WPA2-PSK is the same as WPA-PSK, basically. However, there is no compatibility
between them due to changes to the defined values.
WPA2-PSK requires support for AES-CCMP, but not TKIP.
If there are no restrictions on companion equipment, it is recommended to use WPA2-PSK plus AES-CCMP.

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2.3 Overview of Demo System
As an overview of the demo system, this section describes the demo system configuration, setting procedure, and
introductory operations.
The description in this section assumes that a demo program has been written on the FM4 evaluation board.
Demo system configuration
Figure 9. Demo system configuration

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List of equipment
Table 1. List of demo system equipment
No.
Name
Maker
Qty.
Description
1
FM4 evaluation board
CYPRESS
1
FM4 evaluation board with mounted FM4 MCU and SD card
slot. (SK-FM4-U120-9B560)
2
Wireless LAN module
evaluation board
TAIYO
YUDEN
1
Wireless LAN module evaluation board with SDIO interface.
(WBSAAVDX7)
3
Access point
BUFFALO
1
Wireless LAN access point with DHCP server functions. (WMR-
300)
4
Battery
ELECOM
1
Battery for FM4 evaluation board, wireless LAN module, and
access point. (DE-M01L-3530BK)
5
USB cable
-
1
USB cable with Type A male - MiniB male connectors for 5V
feed to the FM4 evaluation board.
6
Dedicated power cable
-
1
Dedicated power cable for 5 V feed to the wireless LAN module.
7
USB hub
-
1
USB hub for 5 V feed to the FM4 evaluation board and the
wireless LAN module.
8
Web browser device
(Android tablet)
-
1
Used for displaying demo contents.
9
Web browser device
(smartphone)
-
1
Used for displaying demo contents.
Note: The equipment for No.3 to No.9 is not manufacturer-specific.
Web content
List of URLs for Web content set on the FM4 evaluation board
Table 2. List of URLs
Page overview
URL
Main
http://192.168.1.100/index.html
LED operation
http://192.168.1.100/ledctrl.cgi
PDF
http://192.168.1.100/SIL.pdf
2.3.1 Presetting the Demo
To run the demo system, the wireless settings and IP address settings required for the demo program must be set in
the access point.
The following shows the access point settings and the Web browser device settings.
<Access point settings>
[Wireless settings]
The following shows wireless settings for the demo program.
Table 3. Wireless settings
Item
Description
Channel
Automatic
SSID
FM4-WLAN_demo
Authentication
None
Encryption
None
Please set the wireless settings on the access point setting screen according to these settings.

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Note: Since these settings are not encrypted, it is possible to connect by only selecting the SSID.
[DHCP settings]
Please enable DHCP to assign an IP address to the Web browser device.
The following shows the settings.
Table 4. DHCP settings
Start IP
Number of units
Lease duration
192.168.1.101(*)
64
1 hour
*Set this so that 192.168.1.100 can be excluded since it is used on the FM4 evaluation board.
[IP address settings]
In the demo program, the IP address of the FM4 evaluation board is fixed at 192.168.1.100.
For this reason, the access point must be set to the IP address of the network group corresponding to the IP address
of the FM4 evaluation board.
The IP addresses assumed for each piece of equipment are as follows.
Table 5. IP address settings
Equipment
IP address
Access point
192.168.1.1
FM4 evaluation board
192.168.1.100
Web browser terminal
Obtained by DHCP
<Web browser device settings>
Please enable DHCP.
2.3.2 How to Start the Demo
The following shows the procedure for starting the demo.
Note: Be sure to follow the procedure below to turn the power on.
Please disconnect the access point and the USB hub from the battery before starting the procedure.
Also disconnect the USB cable and dedicated power cable from the USB hub
1. Turn on the access point
−Turn on the battery and connect the access point to the battery to turn the power on.
−Find the preset SSID for the access point from the Web browser device.
−Connect the Web browser device to the access point with the above SSID.
2. Turn on the wireless LAN module
−Connect the wireless LAN module to the SD card slot of the FM4 evaluation board.
−Connect the dedicated power cable to the USB hub.
−Connect the USB hub to the battery to turn on the wireless LAN module.
3. Turn on the FM4 evaluation board
−Connect the USB cable to the USB hub to turn on the FM4 evaluation board.
−The LED on the evaluation board lights up in red during initialization.
*Once the LED flashes in red, the initialization is complete and it searches for the access point. If this state
continues for a long time, please review the settings for the access point.
−When the Web server starts and can be accessed from the Web browser device, the LED on the evaluation
board will repeatedly flash on and off five times and then turn off.
4. Access from Web browser device
−Make sure that the FM4 evaluation board is accessible before accessing it from the Web browser device.
−Please refer to Table 2 for the URLs that are accessible.

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2.3.3 Introduction of Demo Operations
The following three demos are provided.
Demo 1: Changing the LED Status
Demo 2: Scaling an Image
Demo 3: Downloading a PDF
Each demo is shown below.
[Demo screen configuration]
Figure 10. Main Screen

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Figure 11. LED operation screen
[Demo 1: Changing the LED Status]
In Demo 1, the LED status is reflected in the Web browser.
There are two ways to turn LED lights on/off
1. Operation using the switch on the FM4 evaluation board
−Each time the "SW2" switch (middle of three switches) is pressed on the FM4 evaluation board, the LED
repeatedly turns on/off in the following pattern.
Figure 12. Operation using the switch on the FM4 evaluation board
Note: SW1, which is next to SW2, is "Reset".
If SW1 is pressed by mistake, restart the system according the procedure for starting the demo.
2. Operation using the LED operation page
−The LEDs on the board can be operated from the "LED Operation" page in the URL list.

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Figure 13. Operation using the LED operation page
−Click the ON button for each color to light the LED in the corresponding color (in any combination).
−The ON button for the color set to ON cannot be operated, and the OFF button becomes operable instead.
−To turn the LED light off, click the OFF button
Show the Web browser screen example with an operation.
Figure 14. Example screen when green is ON
[Demo 2: Scaling an Image]
In Demo 2, a brochure for the demo is scaled up/down through analog input on the board.
By using the "blue dial" on the evaluation board, the image on the browser is scaled up/down according to the state of
the analog input value.

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Figure 15. Image scaling operation
Figure 16. Screen transitions for image scaling operation
[Demo 3: Downloading a PDF]
In Demo 3, a PDF file of the image displayed in Demo 2 can be downloaded.
To view the downloaded PDF file, the Web browser requires software for viewing PDF files.
Please refer to Table 3 for the wireless LAN configuration of the Web browser terminal.
There are two methods for downloading the file.
1. Directly enter the URL in the Web browser
Directly enter the URL of the PDF in the List of URLs into the address entry field.
2. Click the link on the main screen of the demo

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Figure 17. PDF file download
3 Hardware Overview
3.1 Hardware Configuration
The following shows the hardware configuration.
Configuration of FM4 evaluation board and wireless LAN module
[Connection between FM4 Evaluation Board and Wireless LAN Module]

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Figure 18. Connection between FM4 evaluation board and wireless LAN module
FM4(MB9B560)
Wireless LAN Module
SDIO Interface
[FM4 Evaluation Board]
Figure 19. FM4 evaluation board
[Wireless LAN Module]
Figure 20. Wireless LAN module

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Overall hardware configuration during development
Figure 21. Overall hardware configuration during development
Hardware block diagram
This section describes the hardware for linking and operating the FM4 and wireless LAN module together.
−WLAN module
The FM4 and the wireless LAN module communicate with each other via an SDIO interface. The FM4 operates
based on the SDIO specification using the SD Host function of the SD card Interface.
−IAR J-Link ICE
The FM4 evaluation board and the IAR J-Link ICE are connected by a 20-pin JTAG interface, and the PC and
IAR J-Link ICE are connected by a USB cable.
This is used for writing to the internal Flash on the FM4 and debugging programs.
Using this requires the IAR Embedded Workbench.
−Regulated DC Power Supply
Connect a power supply that can output DC 5 V.
Figure 22. Hardware block diagram

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3.2 Detailed Specifications
This section shows the detailed specifications of the hardware.
List of equipment used during development
Table 6. Detailed Specifications
No.
Name
Manufacturer
Part number
Description
1
FM4 evaluation board
CYPRESS
SK-FM4-U120-9B560
FM4 evaluation board body.
2
Wireless LAN module
evaluation board
TAIYO YUDEN
WBSAAVDX7
A Wireless LAN module evaluation board.
Note: Red and blue power cables are included
when purchasing this module.
3
Stabilized power supply
-
-
This is for supplying power to the wireless LAN
module evaluation board. Use a power supply
that can output DC 5 V.
Note: The 5 V power can be supplied by using
a dedicated power cable instead of the
stabilized power supply.
Creating a dedicated power cable is at your
own risk.
4
IAR J-Link ICE
IAR
J-Link-ARM
This is used for writing and debugging
programs.
Note: JTAG and USB cables are included
when purchasing this ICE.
5
PC
-
-
A PC that runs IAR Embedded Workbench is
required.
Up to 3 USB ports are used.
1st: Supplies power to the FM4 evaluation
board.
2nd: Connects with J-Link.
3rd: Supplies power to the wireless LAN
module.
6
USB cable
-
-
Use a USB cable with [Type A male] - [MiniB
male] connectors.
This is for supplying power to the FM4
evaluation board.
Built-in components
The built-in components are shown below.
[FM4 Evaluation Board]
Please refer to the following Web site.
http://www.spansion.com/Support/microcontrollers/developmentenvironment/Pages/board-SK-FM4-U120-
9B560.aspx
[Wireless LAN Module]
Please refer to the following Web site.
https://www.yuden.co.jp
Please refer to the documentation included at the time of purchase.

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Interfaces used
The following shows the interfaces used on each board.
[Power Supply]
Figure 23. Power supply interface
Figure 24. Dedicated power cable
This hardware requires supplying both, the FM4 evaluation board, and the Wireless LAN module evaluation board
with 5 V power, individually.
Power is supplied to the FM4 evaluation board by connecting it to the PC with a USB cable.
Power is supplied to the wireless LAN module evaluation board by connecting it to the stabilized power supply.
The power source is 5 V. You can create a dedicated power cable to supply the power.
[SD Card Interface]
Figure 25. SD card interface
The SD card slot uses a push-on/push-off mechanism. When inserting or removing the SD card, push it in once as far
as possible.