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.