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Instant Internet
Evaluation Board
II-EVB-363MW/L/D rev. 2
User Manual
Version 1.15
Copyright © 2008,2009 Connect One Ltd.
International:
Connect One Ltd.
20 Atir Yeda Street
Kfar Saba 44643, Israel
Phone: +972-9-766-0456
Fax: +972-9-766-0461
Email: [email protected] http://www.connectone.com
USA:
Connect One Semiconductors, Inc.
560 S. Winchester Blvd.
Suite 500
San Jose, CA 95128
Tel: (408) 572-5675
Fax: (408) 572-5601
Connect One
Information provided by Connect One Ltd. is believed to be accurate and reliable.
However, Connect One assumes no responsibility for its use, nor any infringement of patents or other rights of third parties, which may result from its use. No license is granted by implication or otherwise under any patent rights of Connect One other than for circuitry embodied in Connect One’s products. Connect One reserves the right to change circuitry at any time without notice. This document is subject to change without notice.
The software described in this document is furnished under a license agreement and may be used or copied only in accordance with the terms of such a license agreement.
It is forbidden by law to copy the software on any medium except as specifically allowed in the license agreement. No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, including but not limited to photocopying, recording, transmitting via fax and/or modem devices, scanning, and/or information storage and retrieval systems for any purpose without the express written consent of Connect One. iChip, Nano WiReach, Nano LANReach, IP Communication Controller, SerialNET,
AT+i, and Connect One are trademarks of Connect One Ltd.
Copyright
© 2008,2009 Connect One Ltd. All rights reserved.
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TABLE OF CONTENTS
4. Installing the iChipConfig Utility & Evaluation Software ....................................5
5. Testing the Nano WiReach Wireless LAN Connection ........................................5
6. Testing the Nano LANReach LAN Connection ....................................................6
RJ45 10/100BaseT Ethernet LAN (for Nano WiReach) ...........................................7
Appendix 3: Nano LANReach Mechanical Views ......................................................14
iChip Wireless LAN Environment Configuration Parameters ................................22
Wireless LAN Data Privacy/Security Considerations .............................................25
Data from Nano WiReach to Host (Slave to Master) ..............................................26
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1. Introduction
This manual is intended to familiarize customers with Connect One’s Instant Internet
Evaluation Board II-EVB-363. The II-EVB-363 is an evaluation platform for the
Nano WiReach™ WiFi Module, Nano LANReach and Nano SocketLAN. The
Connect One Nano modules are secure serial-to-WiFi / serial-to-LAN modules that also act as a bridge to connect serial devices to Ethernet or 802.11b/g wireless LANs.
The Nano modules fit into a compact form factor and utilizes Connect One’s iChip
CO2144 IP Communication Controller
™
and the AT+i
™
command set, a powerful set of Internet protocol commands developed by Connect One to manage Internet connectivity through an Ethernet or wireless LAN connection.
Nano modules enable sending and receiving textual and binary data, MIME-encoded email messages; downloading HTML pages or files from a Web server, or items from within a page; Web serving, as well as managing TCP or UDP socket communications (with or without SSL3) over the Internet. It also includes an FTP client and a TELNET client.
Nano WiReach can easily connect existing LAN based solutions to a WiFi network when used in bridging mode.
Nano WiReach supports numerous WiFi security protocols such as 64/128-bit WEP encryption, AES-CCM and TKIP encryption, WPA (including AES) and WPA2 in both PSK and Enterprise modes. The Nano modules also support the SSL3/TLS1 security protocols.
2. Unpacking
Take the II-EVB-363 out of its box. Included in the box are:
• The II-EVB-363 motherboard including o
363MW: Nano WiReach module o
363ML: Nano LANReach module o
363MD: Both Nano modules
• A serial cable with two DB-9 connectors
• A USB cable
• Antenna (in 363MW and 363MD)
• +9VDC Power supply adaptor (110/220 VAC)
• A single 30-pin female receptacle connector for prototyping on your own PCB
3. Connections
1. Communications Cable:
• Serial RS232: Connect one end of the RS232 cable to the D-shell, 9pin female, Host RS232 port on the II-EVB-363 (J4) and connect the other DB-9 connector to the COM1 or COM2 serial port on your PC, or to the serial port of your embedded device.
• USB: Connect one the device end of the USB cable to the EVB-363
USB connector (J1) and connect the other end to a Host USB port on your PC or embedded device.
2. Connect the II-EVB-363 to the power supply.
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3. Connect the WiFi antenna to the screw-on Antenna bracket.
4. Installing the iChipConfig Utility & Evaluation Software
II-EVB-363 enables you to evaluate the Nano modules without changing anything in your current development environment. Using a simple terminal program on a PC, you can issue AT+i commands to the Nano WiReach and get responses.
AT+i commands are used to configure parameter values into iChip’s flash memory and activate Internet tasks such as Email send/Recieve, sockets, FTP sessions, Web, and more.
A full description of the AT+i protocol can be found in the AT+i Programmer’s
Manual on the Connect One website at: http://www.connectone.com/support.asp?did=42
To assist in configuring and evaluating the iChip and the Nano modules, Connect One supplies the iChipConfig Utility. This is a Windows-based GUI program that contains intuitive dialog boxes to fully configure iChip. It doesn’t require any knowledge of
AT+i commands. In addition, it contains a local firmware upgrade function.
The iChipConfig Utility also allows you to perform specific Internet communication tasks such as sending and receiving Emails, activating iChip’s websites, entering
SerialNET mode, and more.
For more information on the iChipConfig Utility and its usage, see the iChip Config
Utility User’s Manual.
. The latest iChipConfig Utility version and user manual can be found on the
Connect One website in the Support section at: http://www.connectone.com/support.asp?did=30
Most frequently iChipConfig connects to the II-EVB-363 though the PC’s standard
RS232 Serial port. The Nano modules also includes a USB Device port, which allows using a USB connection as an alternative. To enable use of the PC USB port, a virtual
COM USB driver needs to be loaded on the PC. The iChipConfig can then be configured to use the virtual port. Instructions for configuring the USB drivers on the
PC are given below in Appendix 3.
5. Testing the Nano WiReach Wireless LAN Connection
To test the wireless LAN connection, you need to configure the Nano WiReach to connect to an Access Point:
1. Make sure an Access Point is connected and configured properly.
2. Start the iChipConfig Utility on your PC.
3. In the main window of the utility, click the Dumb Terminal icon.
4. In the Dumb Terminal window, enter the AT+i command to verify that the iChip is communicating with your PC. You should receive an I/OK in response. If this has failed, click the “Setup Port” button and select the correct
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COM port. When using a USB connection, select the USB virtual COM being used.
5. Enter the AT+iRP11 command to obtain a report of all the Access Points available in your area.
6. Enter AT+iWLSI=<ssid>. ssid is the ID of the Access Point you connect to.
Note that ssid is a case-sensitive string.
7. If you want to enable WEP encryption, configure the following parameters:
n=0 means no security, n=1 means 64-bit
8. key, and n=2 means 128-bit key
• AT+iWLKI=<n> where n is the WEP key index (n=1..4)
• AT+iWLK<n>=<keyString> where
keyString is the WEP key string in the n th
n is an index between 1 and 4, and
position.
If you want to enable WPA encryption, configure the following parameter:
AT+iWLPP=<passphrase> where passphrase is the pass-phrase to be used in generating the WPA1-PSK encryption key. It is normal for the iChip to take a few moments before returning I/OK in this case.
9.
Enter AT+iDOWN in order to reset the Nano WiReach and connect to the
WiFi network.
At this stage a connection to the Access Point should be established. Verify that the Nano WiReach has received an IP address from the DHCP server by issuing the AT+iIPA? command. The Nano WiReach should reply with I/<IP address>.
To test the connection, use the iChipConfig utility to perform any activity that requires network connection such as retrieving a web page, sending an email, or opening a socket. You may also try to PING the iChip from another station on the network.
6. Testing the Nano LANReach LAN Connection
To test the wireless LAN connection, you need to configure the Nano LANReach for your LAN:
1. Connect the Nano LANReach module to the LAN network.
2. Start the iChipConfig Utility on your PC.
3. In the main window of the utility, click the Dumb Terminal icon.
4. In the Dumb Terminal window, enter the AT+i command to verify that the iChip is communicating with your PC. You should receive an I/OK in response. If this has failed, click the “Setup Port” button and select the correct
COM port. When using a USB connection, select the USB virtual COM being used.
5. Configure the LANReach module IP address in the +iDIP parameter. Set
AT+iDIP=0.0.0.0 if you want the LANReach to receive IP settings for the network’s DHCP server.
6. Set +iDIP to an IP address to skip the DHCP process and use a fixed IP. In this case you should also define the +iSNET (subnet) parameter. For example,
AT+iSNET=255.255.255.0
7.
Enter AT+iDOWN in order to reset the Nano WiReach and connect to the
LAN network.
To test the connection, use the iChipConfig utility to perform any activity that requires network connection such as retrieving a web page, sending an email, or
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opening a socket. You may also try to PING the iChip from another station on the network.
The Nano modules support two additional connections:
SPI Slave
The Nano modules support an alternative Host interface to the RS232 Serial port and the USB connection. A host equipped with an SPI Master connection may connect to the Nano module’s SPI Slave port and interact with the module with AT+i commands.
An SPI cable (not supplied) connects to the II-EVB-363 J3 SIP connector: nSPI_INT nSPI MISO nSPI MOSI nSPI_CLK nSPI_CS
GND
J3
A full description of interfacing the Nano modules with SPI is included below in
Appendix 5.
RJ45 10/100BaseT Ethernet LAN (for Nano WiReach)
The II-EVB-363 contains a standard 10/100BaseT RJ45 connector that allows a direct connection to a wired LAN. The use for this connection is to implement a WiFi to
LAN bridge with the Nano WiReach module. The bridge feature is supported in Nano
WiReach firmware version 8.04 or later.
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Connectors and Switch Positions
Nano SocketLAN
RJ45 LAN (For use exclusively with Nano WiReach)
Nano WiReach or
Nano LANReach
Antenna
(exclusively for
Nano WiReach
SPI
Connection
Module Reset
Mode Select
USB
Connection
RS232 Serial
Connection
+9VDC
Power Jack
Power Switch
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8. II-EVB-363 Bill of Materials
Item Quant. Reference
1 3 C1,C5,C12
2 2 C3,C4
Part
10UF/6.3V
15PF
Manufacturer
Any
Any
C6,C11,C16,C18,C22,C23,C24,
C27,C28,C29,C30,C31,C32,C33,
3 16
4 8 C7,C8,C9,C10,C13,C19,C20,C21 470NF
5 1 C15
6 1 C17
7 2 C25,C26
8 2 D1,D11
9 1 D2
10 1 D3
11 1 D4
12 1 D5
10UF/25V
220UF/10V
100UF/6.3V
G.LED
LLN4148
1N4001
MUR115
R.LED
Any
Any
Any
Any
Any
Any
Any
Any
Any
13 5 D6,D7,D8,D9,D10
14 4 1,2,3.3V,GND
15 1 JP2
16 1 J1
17 1 J2
18 1 J3
19 1 J4
20 1 J5
GREEN Any
TP
JUMPER
Any
Any
USB-B
52991-0308
CON6
Any
Molex
Any
Any
DC-JACK-MALE Any
21 1 J6
22 2 J8,J9
23 1 L1
24 1 L2
25 2 R1,R2
26 7
29 2
30 4
31 1
32 1
33 2
34 1
35 1
R20,R23
R24,R25,R26,R27
R28
R29
SW1,SW2
SW3
U1
203199
CON10
68UH/1A
27
R4,R9,R11,R13,R15,R17,R32 100K
27 3 R5,R21,R22
28 8
36 1
37 1
R8,R10,R12,R14,R16,R19,R30,R31
U2
U5
38 2 U7,U10
39 1 U11
40 1 U12
10K
470
3K
0
6.8K1%
TACK_SW
SWITCH
Any
Any
Any
Any
Any
Any
NC7WZ04P6X Fairchild
SN65C3238E TI
LM2591HVS-3.3 National
F4100-50MHZ
DM9161A
ERNI
Any
Any
Any
Any
Any
Any
Fox
Davicom
Appendix 1: II-EVB-363 Schematics :
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5
D
GND
VDD1
2
GND
READYNESS
1
TXD0 nRTS0
MSEL
RF_ACT_LED nSPI1_CLK nSPI1_MOSI
READYNESS
DDM
GND
EREFCK
ERXER
EMDC
ERX1
ERX0
14
16
18
20
10
12
6
8
2
4
22
24
26
28
30
13
15
17
19
5
7
1
3
9
11
21
23
25
27
29
RXD0 nCTS0
DATA_RDY nRESET nSPI1_CS nSPI1_MISO nSPI1_INT
DDP
VDD1
DATA_RDY nRESET nSPI1_CS
ETXEN
CRSDV
EMDIO
ETX1
ETX0
VDD1
C
4
B
+
C12
GND
VDD1
RXD0
TXD0 nCTS0 nRTS0
DATA_RDY
MSEL nRESET
RF_ACT_LED
9
10
7
8
3
4
1
2
5
6
VDD1
2 nSPI1_CS nSPI1_CLK nSPI1_MISO nSPI1_MOSI nSPI1_INT
READYNESS
DDM
1
DDP
SPEED
GND
9
10
7
8
3
4
1
2
5
6
A
5 4
3 2
DDM
DDP
GND GND
C4
15PF
GND
3
4
1
2
1
VDD
VDD
GND
TXD0
VDD
DATA_RDY nRESET
TXD0
RXD0
READYNESS nRTS0
RXD0 nCTS0
28
25
C1+ V+
V-
27
4
1
C1-
C2+
3
24
23
22
19
17
16
21
20
18
13
14
C2-
TIN1
TIN2
TIN3
TIN4
TIN5
ROUTB1
ROUT1
ROUT2
ROUT3
FORCEON
FORCEOFF
TOUT1
TOUT2
TOUT3
TOUT4
TOUT5
RIN1
RIN2
RIN3
INVALID
5
6
7
10
12
8
9
11
15
TXD232
DTR232
RTS232
-CDH232
RXD232
CTS232
GND nSPI1_INT nSPI1_MISO nSPI1_MOSI nSPI1_CLK nSPI1_CS
3
4
5
6
1
2
GND
-CDH232
DTR232
TXD232
CTS232
RXD232
RTS232
GND
4
9
5
3
8
1
6
2
7
GND
GND
GND
GND
3 2
GND GND
FOR ANTENNA HOLDING
1
D
C
B
A
D
C
B
5 4 3
VDD
VDD
GND
1
E/D OUT
3
GND
VDD VDD
GND
GND
CRSDV
EREFCK
ETX1
ETX0
ETXEN
ERX1
ERX0
ERXER
EMDC
EMDIO
VDD
42
26
27
28
29
34
37
17
18
19
20
21
22
16
38
36
35
24
25
32
39
REF_CLK/XT2
TX3
TX2
TX1
TX0
TX_EN
TX_CLK/ISOLATE
RXD3/PHYAD3
RXD2/PHYAD2
RXD1/PHYAD1
RXD0/PHYAD0
RX_CLK/10BTSER
RX_DV/TESTMODE
TX_ER/TXD4
RX_ER/RXD4/RPTR
COL/RMII
CRS/PHYAD4
MDC
MDIO
MDINTR
DISMDIX
41
30
23
15
33
44
10
40
VDD
VDD
VDD
GND
GND
GND
PWRDWN
RESET
XT1
TX+
TX-
RX+
RX-
AVDDR
AVDDR
AVDDT
43
7
8
3
4
1
2
AGND
AGND
AGND
BGRESG
47
BGRES
LEDMODE
LED0/OP0
LED1/OP1
LED2/OP2
CABLESTS/LINKSTS
NC
48
31
11
12
13
14
45
9
5
6
46
AVDD1
AGND1
VDD
GND
AGND1 nRESET
AVDD1
2
AGND1 GND AGND1 AGND1
AVDD1
AGND1
AGND1
1
VDD
D
5
6
7
8
1
2
3
4
9
10
11
12
13
14
D1
D2
D3
D4
TDP
TDN
RDP
TCT
RCT
RDN
NC
GND
SHILD
SHILD
C
B
A A
5 4 3 2 1
D
GND
5
2 1 1 2
VIN
1
VIN
4
FEEDBACK
4
OTPUT
2
C
B
A
VDD
3
1 2
VDD1
2 1
5
GND
VDD
VDD
GND
GND
VDD
VDD nSPI1_CS
14
CEXT
15
1
2
3
REXT/CEXT
A
B
CLR
Q
Q
13
4
VDD
6
CEXT
VDD
TXD0
7
TXD0
9
10
11
REXT/CEXT
A
B
CLR
VDD
VDD
RXD0
14
CEXT
RXD0
15
1
2
3
REXT/CEXT
A
B
CLR
Q
Q
Q
Q
13
4
5
12
2 1
GND
2
2
1
1
GND
GND
VDD
VDD
VDD
READYNESS
3 4 2 1
GND
GND
VDD
GND
DATA_RDY DATA_RDY
R15
100K
GND
1
GND
6
NC7WZ04P6X
470
1 2
VDD
6
CEXT
7
9
10
11
REXT/CEXT
A
B
CLR
Q
Q
5
12
4 3 2 1
D
C
B
A
Connect One
Appendix 2: Nano WiReach Mechanical Views
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Appendix 3: Nano LANReach Mechanical Views
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Appendix 4: Installing USB Drivers on a PC
Installing the USB driver:
The USB driver is supplied in three separate files: sabalo.inf, iChip.inf and usbser.sys.
These files may be obtained on the Connect One Web site under:
Support >> Drivers & Utilities at: http://www.connectone.com/support.asp?did=30 .
1. Copy “sabalo.inf” and “iChip.inf” to the directory C:\WINDOWS\inf. To view the \inf directory, you must allow viewing of hidden folders in Folder Options.
2. Copy usbser4.sys to C:\WINDOWS\system32\drivers.
3. Connect one end of a USB cable to your PC. Connect the other end to the USB
“device” connector of the II-EVB-363 board on which the
Nano WiReach is mounted.
4. Turn on the power to the EVB board.
5. The “Found New Hardware Wizard” of Windows XP pops up and prompts you to install a new device driver. When prompted with the message “Can Windows connect to Windows Update to search for software?” Select No, not this time. See Figure 1.
II-EVB-363NW User’s Manual
Figure 1
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6. When prompted with the message “What do you want the wizard to do?” Select
Install the software automatically (Recommended). See Figure 2.
Figure 2
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7. Windows will install the driver. See Figure 3.
Figure 3
Figure 4
8. When a pop-up window reports that the software for the new hardware — Connect
One Sabalo USB Device — has not passed Windows Logo testing, select Continue
Anyway. See Figure 4.
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9. The USB driver is now installed and ready for use. See Figure 5.
Figure 5
V iewing the properties of the new driver:
1 . From the Windows task, click Start > Settings > Control Panel.
2 . Double-click the System icon.
3 . In the dialog box displayed, select the Hardware tab.
4 . Click the Device Manager button.
5 . If the Flash memory is empty: Open the Modems list to find the Connect One
Sabalo USB Device. The virtual COM port number will be written in the properties information of this device.
6 . If the Flash memory is already programmed: Open the Ports list to find the
Connect One iChip Sabalo port number. See Figure 6.
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Figure 6
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FAQs
Q: What should I do if Windows does not automatically locate the driver for the new hardware?
A: Please use the “Back” button to browse to the previous step and manually browse to the directory of the iChip Configuration Utility, usually located in “C:\Program
Files\iChipConfig”.
Q: What should I do if Windows identifies new hardware but the wizard does not pop up automatically?
A: You can invoke the wizard manually from the Control Panel.
Q: What should I do if Windows notifies me that “USB Device Not Recognized”?
A: Please make sure that the cable is connected properly to the board side. Then disconnect the USB cable from the computer side and try to connect it to another USB port. Prefer a port which is located on the computer rather than use a USB hub.
Q: Should I repeat this installation procedure every time I connect the board over
USB connection to the same computer?
A: No. The installation is required only on the first time the board is connected to each computer. Afterwards the board will be automatically recognized and ready to communicate over USB.
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Appendix 5: WiFi Configuration Notes
Introduction
The AT+I programmer’s manual includes full details for WiFi configuration. Please visit the support section on Connect One’s website to obtain the last version. The following is a partial overview of WiFi related commands.
Wireless LAN stations operate in one of two modes: Infrastructure or Ad-Hoc.
In Infrastructure mode, wireless LAN stations connect to a wireless LAN Access
Point (AP), which acts as a hub. Wireless LAN stations may connect to each other through the AP. If the AP is connected to LAN, it allows wireless LAN stations to connect to other stations on the LAN. When a gateway is in place, it enables wireless
LAN stations to connect to systems across the gateway, as well.
In Ad-Hoc mode, two or more wireless LAN stations communicate directly with each other.
The Nano WiReach supports the 802.11b/g wireless LAN communication platform. It uses the iChip™ CO2144 communication controller chip and Marvell 88W8686 WiFi chipset. It incorporates several dedicated AT+i configuration parameters to support the wireless LAN environment. See the table below for a detailed list of WiFi configuration parameters.
AT+i Parameter Name Description
WLCH Wireless LAN Communication Channel
WLSI Wireless LAN System-Set ID
WLWM
WLKI
WLKn
WLPS
WLPP
WLRS
Wireless LAN WEP Mode
Wireless LAN Transmission WEP Key Index
Wireless LAN WEP Key Array
Wireless LAN Power Save
Personal Shared Key Pass Phrase
Wireless LAN Rescan Interval
Table 1: AT+i Wireless LAN Configuration Parameters
The Nano WiReach may also be configured to exploit WEP security. iChip supports configuration of both 64-bit or 128-bit WEP keys.
In Infrastructure mode, Power Save mode is supported. When activated, Power Save shuts down the station for a limited period of time, during which the Access Point buffers incoming packets destined for the deactivated WiFi station. The station periodically wakes up to retrieve all the buffered packets stored in the Access Point.
In this mode, total power consumption is lowered at the expense of higher response latency. The Nano WiReach may be configured to put the WiFi chipset in Power Save mode in conjunction with iChip’s inherent Power Save mode.
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iChip Wireless LAN Environment Configuration Parameters
WLCH (Factory Default: 0)
In Infrastructure mode, the WLCH parameter must be set to 0. Other available values
(1..13) designate the preferred communication channel while in Ad-Hoc mode.
WLSI (Factory Default: Empty)
This parameter must be assigned with the System-Set-ID string (SSID), which is identical to that configured in the Access Point(s) through which the WiFi station needs to connect. An exception to this is the “Any SSID” configuration, which is configured by simply leaving this parameter empty (or setting to NULL string with
AT+iWLSI=””). In the “Any SSID” configuration, the WiFi station will connect to any available Access Point. If more than one Access Point is active, it will choose the one with the stronger radio signal.
WLWM (Factory Default: 0)
Configure this parameter to designate WEP security usage mode. If WEP is disabled, the WLKI and WLKn parameter settings are irrelevant. Note that WEP settings (with the exception of WLKI) must be identical to those configured in the Access Point device. Possible settings are:
WLWM Setting WEP Security
0 Disabled
1 Enabled, using 64 bit keys
2 Enabled, using 128 bit keys
Table 2: WEP Security Mode Settings
WLKI (Factory Default: 1)
If WEP is enabled, this parameter defines the key index of the WEP key to be used when encoding outgoing WiFi packets. Since WEP includes configuration for an array of four possible keys, WLKI can receive a value in the range [1..4]. The value of this parameter need not be the same as that configured in the Access Point.
WLKn (Factory Default: All Empty)
These are four consecutive parameters (with n ranging from 1 to 4). The parameters define an array of 4 WEP security keys, which are used to encode outgoing WiFi packets (using the key defined by WLKI) and decode incoming packets according to the key issued by the Access Point device. Key size is 64- or 128-bits, according to the WLWM setting. The parameter values are used only if WEP security is enabled
(WLWM > 0). The key values must be identical to those configured in the Access
Point device.
WLPS (Factory Default: 0)
This parameter defines the chipset Power Save mode. When configured for Power
Save mode, iChip links its own internal Power-Save mode with that of the Marvell chipset. When iChip’s Power Save mode is activated (AT+iPSE=1), and when WLPS is greater than 0, iChip will force the chipset into Power Save mode. The value stored in WLPS defines the maximum length of time (in milliseconds) during which the
Marvell chipset will snooze, before waking up to download any available packets that may have been buffered for it in the Access Point. WLPS may be set in the range:
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[0..3600]. When WLPS is set to 0, the Marvell chipset Power Save is disabled, even if iChip enters Power Save mode.
WLPP (Factory Default: Empty)
This parameter sets the wireless LAN WPA1-PSK pass-phrase to be used in generating the WPA1-PSK encryption key. When empty, WPA security is disabled. If
WLSI (SSID) is not empty, WPA1-PSK security is enabled for WiFi connections and
WLPP is used in generating the WPA1-PSK encryption key. The allowed value for
WLPP is an ASCII string containing 8-63 characters.
WLRS (Factory Default: 0)
This parameter sets the interval between consecutive scans that iChip performs in search for nearby ad-hoc networks. Scan duration is two beacon periods (200 ms).
WLRS may be set in the range: 0-65535 milliseconds.
Wireless LAN Configuration Web Site Page
iChip’s configuration website includes two views that support configuration and status retrieval of related Wireless LAN parameters. The configuration view displays the configurable Wireless LAN AT+i parameters (WLCH, WLSI, WLWM, and
WLKI). New values may be defined and submitted to iChip from the browser.
Figure 7: Wireless LAN Web Configuration
Wireless LAN Status Report
The Wireless LAN AT+i Report (AT+iRP10) returns pertinent status information regarding the active 802.11b/g Wireless LAN link. In response to issuing the report command, iChip will reply with the following syntax:
I/(<port stat>, <xfer rate>, <sig level>, <lnk qual>)
Where, port stat -- Port Status:
0: Wireless LAN adapter not present
2: Searching for initial connection xfer rate
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-- Transfer Rate, in the range 1..4
(
1 =>1 Mbps; 2 =>2 Mbps; 3 =>5.5 Mbps; 4 =>11 Mbps
)
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sig lvl lnk qual
--
--
Signal Level [%], in the range 0..100
Link Quality [%], in the range 0..100
The Configuration website contains a live status page with this and some additional status information:
Figure 8: Wireless LAN Web Status Display
iChip Wireless LAN Test Mode
WLTR
This command limits the wireless LAN transmission rate according to the specified command parameter. The table below details the possible parameter values:
Maximum
Transmission Rate
0
Detail
Maximum possible transmission rate for the current chipset.
5 Reserved
Table 3: Maximum Transmission Rate Command Parameter
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When AT+i WLTR is issued, transmission rate is limited for the duration of the session until another AT+iWLTR command is issued, or iChip is power-cycled.
Placement and Range Guidelines
802.11b/g wireless LAN devices connect to wireless LAN Access Points over a maximum range of 300 feet. Actual transmission rate and service quality may vary significantly as a result of environmental obstacles and physical placement of the
Access Point and station devices.
For best results, refer to the following guidelines:
1. Locate the wireless LAN equipment away from sources of interference, such as PCs, large metal surfaces, microwaves, and cordless phones
.
2. Position the wireless LAN access point at an elevated position and as close as possible to the center of the area in which the wireless LAN devices will operate.
Wireless LAN Data Privacy/Security Considerations
The fact that wireless LAN devices transmit data over a radio link makes them vulnerable to electronic eavesdropping, tampering, and information theft. There are several means by which you may strengthen your wireless LAN access security:
• Change the factory default SSID setting of the wireless LAN Access Point and station devices. Enable WEP or WPA encryption of the wireless LAN data communications. If you use WEP, it is recommended that you use 128-bit
WEP keys.
• Restrict 802.11b/g wireless LAN access based on MAC address. This is configurable in most Access Point devices.
• Place the 802.11b/g Wireless Access Point in a location where it cannot be physically tampered with.
• Store printed SSID and WEP or WPA key settings in a safe place.
For a complete Wireless LAN Configuration Guide for iChip products download the
“WiFi Configuration Guide” form the Connect One Web site at: http://www.connectone.com/support.asp?did=42 .
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Appendix 6: SPI Host Interface
Introduction
The Nano WiReach contains an SPI slave port, which allows a Host processor to interface the iChip using an SPI Master port.
The SPI data transfer shall be based on the 'Command-Response' principle. (Half
Duplex). Meaning, until the HOST gets an answer to a command, it won't send a new one.
Several assumptions have been made:
• Number of bits per transfer is: 8.
• No echo from the Nano WiReach to HOST (i.e. when Nano WiReach’s host interface is set to SPI, the command AT+iEn is meaningless.
• When Nano WiReach’s host interface is set to SPI, Nano WiReach won't support SerialNet mode since it is not Half Duplex compatible.
• When Nano WiReach’s host interface is set to SPI, Nano WiReach won't support the “+++” Escape sequence.
The SPI interface will have the following behavior:
• Fixed peripheral select
• The CS is directly connected to the SPI Master device
• Mode fault detection is enabled
• The inactive state value of the serial clock is logic level zero
• Data is changed on the leading edge of the serial clock and captured on the following edge of the serial clock
• The peripheral chip select line rises as soon as the last transfer is achieved
SPI Protocol
A Nano WiReach GPIO Output signal is dedicated as the SPI Control signal
(nSPI_INT). After receiving a command from the Host, Nano WiReach will assert this signal for the duration of its response. The Host should not attempt to send the next command until this signal is de-asserted. The SPI control signal pin is defined with the new +iSPIP parameter described below.
The SPI control signal is also utilized as a flow-control signal when the Host transmits data to the Nano WiReach.
Data from Nano WiReach to Host (Slave to Master)
When Nano WiReach replies to the Host commands it sends data packets preceded by a 2-byte header using the following structure:
1 0 0 0 4bits
Bit 15 is the Data-Ready bit 12bits Data Length
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The Nano WiReach SPI driver asserts the SPI Control GPIO to indicate to the host to start reading the entire packet, starting with the header word and followed by the packet payload, whose length matches the 12 LSBits of the Header word.
All the received bytes from the host are ignored.
Flow Control - Data from Host to iChip Flow Control
Flow control from Nano WiReach to the host is managed using the SPI control signal. Nano WiReach will assert the SPI Control signal to signal flow stop.
As soon as the host identifies that the SPI control signal was asserted it should stop transmitting. When Nano WiReach can resume reception, it will de-assert the
SPI Control signal.
iSPIP — SPI GPIO Pin
Syntax: AT+iSPIP=<n>
Define a GPIO as the SPI Control signal
Parameters:
n=0 SPI Control Signal is disabled
n=1..6 Use PIOC [<n>-1] as the SPI Control signal
Default: 0 – SPI Control signal disabled
Result code:
I/OK If n is a legal value.
I/ERROR Otherwise
AT+iSPIP? Returns the current SPIP value followed by I/OK.
Note: The setting will take effect only after SW or HW reset.
iHIF — Host Interface
The +iHIF (Host Interface) parameter is used to define if the SPI Host interface is to be used. A new value of 6 defines usage of SPI.
For example, AT+iHIF=6 -- Selects SPI as the Host Ù Nano WiReach interface.
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