Laird DVK-WLM400 User manual

WISM+ DVK MANUAL
Version 1.00
Page i
© Laird Technology 2010
DVK-WLM400/402
Developer Kit Manual

WISM+ DVK MANUAL
Version 1.00
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© Laird Technology 2010
Innovative Technology
for a Connected World
Laird Technologies is the world leader in the design and manufacture of customized, performance-critical
products for wireless and other advanced electronics applications. Laird Technologies partners with its
customers to find solutions for applications in various industries such as:
Network Equipment
Telecommunications
Data Communications
Automotive Electronics
Computers
Aerospace
Military
Medical Equipment
Consumer Electronics
Laird Technologies offers its customers unique
product solutions, dedication to research and
development, as well as a seamless network of
manufacturing and customer support
facilities across the globe.
Copyright © 2010 Laid Technologies, Inc. All rights reserved.
The information contained in this manual and the accompanying software programs are copyrighted and all rights are
reserved by Laird Technologies, Inc. Laird Technologies, Inc. reserves the right to make periodic modifications of this
product without obligation to notify any person or entity of such revision. Copying, duplicating, selling, or otherwise
distributing any part of this product or accompanying documentation/software without the prior consent of an
authorized representative of Laird Technologies,Inc. is strictly prohibited.
All brands and product names in this publication are registered trademarks or trademarks of their respective holders.
This material is preliminary Information furnished by Laird Technologies in this specification is believed to be accurate.
Devices sold by Laird Technologies are covered by the warranty and patent indemnification provisions appearing in its
Terms of Sale only. Laird Technologies makes no warranty, express, statutory, and implied or by description,
regarding the information set forth herein. Laird Technologies reserves the right to change specifications at any time
and without notice. Laird Technologies’ products are intended for use in normal commercial and industrial applications.
Applications requiring unusual environmental requirements such as military, medical life-support or life-sustaining
equipment are specifically not recommended without additional testing for such application.
Limited Warranty, Disclaimer, Limitation of LiabilityFor a period of one (1) year from the date of purchase by the OEM customer, Laird Technologies
warrants the OEM transceiver against defects in materials and workmanship. Laird Technologies will not honor this warranty (and this warranty will be
automatically void) if there has been any (1) tampering, signs of tampering; 2) repair or attempt to repair by anyone other than an Laird Technologies
authorized technician. This warranty does not cover and Laird Technologies will not be liable for, any damage or failure caused by misuse, abuse, acts
of God, accidents, electrical irregularity, or other causes beyond Laird Technologies’ control, or claim by other than the original purchaser. In no event
shall Laird Technologies be responsible or liable for any damages arising: From the use of product; From the loss of use, revenue or profit of the
product; or As a result of any event, circumstance, action, or abuse beyond the control of Laird Technologies, whether such damages be direct, indirect,
consequential, special or otherwise and whether such damages are incurred by the person to whom this warranty extends or third party. If, after
inspection, Laird Technologies’ determines that there is a defect, Laird Technologies will repair or replace the OEM transceiver at their discretion. If the
product is replaced, it may be a new or refurbished product.

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Change History
Issue
Change
Author
Date
00a
Document Created
John Talley
Dec-1-2009
00b
Preliminary version
John Talley
April-2-2010
00d
Distributed to Sales Team
John Talley
April-25-2010
1.00
Initial Product Release
John Talley
June-2-2010
Glossary of Terms
Acronym
Term
Description
dboard
dboard.exe
Performance tool which creates a UDP socket on a remote PC to receive
packets and measure system throughput.
dboard.exe IS ACCESSABLE AFTER THE INSTALLATION BY…
StartAll ProgramsWism+DashBoard Performance Monitor
DVK
Dev Kit
This refers to the Developers Kit PCB which is designed to provide all
power supply and interface support hardware for a WISM+
WAPI
WISM+ API
This is the API command language used between a host and WISM+ for
configuration and data transfer
WIF
WIF.exe
This stands for Wism+ InterFace program.
This is the PC based executable program for configuring and running
performance tests for the WISM+/Dev Kit.
WIF.EXE IS ACCESSABLE AFTER THE INSTALLATION BY…
StartAll ProgramsWism+Wism+ Config Tool
WISM+
This refers to a WLM400 (for US) or WLM402 (for CE)

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Table Of Contents
1OVERVIEW.......................................................................................................................................................... 1
1.1 PARTS LIST ...................................................................................................................................................... 2
2HARDWARE ........................................................................................................................................................ 3
2.1 PICTURE/MECHANICAL DRAWING DETAILING HIGH LEVEL COMPONENTS ....................................................... 3
2.2 HOST INTERFACES ........................................................................................................................................... 4
2.2.1 Host Com Port ........................................................................................................................................ 4
2.2.2 SPI Header.............................................................................................................................................. 5
2.2.3 I2C Header.............................................................................................................................................. 6
2.2.4 10/100 Ethernet Connector..................................................................................................................... 6
2.2.5 USB Device “MINI” Connector ............................................................................................................. 6
2.2.6 Debug Com Port ..................................................................................................................................... 6
2.3 RF.................................................................................................................................................................... 6
2.3.1 WISM+ U.FL Port#1 & #2 ..................................................................................................................... 6
2.3.2 Antenna Mounting Holes......................................................................................................................... 6
2.4 POWER/GND................................................................................................................................................. 7
2.4.1 DC Power Jack ....................................................................................................................................... 7
2.4.2 Power Switch .......................................................................................................................................... 7
2.4.3 Switching Power Supply.......................................................................................................................... 7
2.4.4 WISM+ Input Power Jumper.................................................................................................................. 7
2.4.5 Ground Pads........................................................................................................................................... 7
2.5 LEDS/INDICATORS...................................................................................................................................... 7
2.5.1 Power LED.............................................................................................................................................. 7
2.5.2 RUN LED................................................................................................................................................ 7
2.5.3 WLAN LED ............................................................................................................................................. 7
2.5.4 SPI........................................................................................................................................................... 7
2.6 BUTTONS...................................................................................................................................................... 8
2.6.1 Reset Button ............................................................................................................................................ 8
2.6.2 Restore Defaults Button .......................................................................................................................... 8
2.6.3 WAKEUP Button..................................................................................................................................... 8
2.7 CLOCK........................................................................................................................................................... 8
2.7.1 Real Time Clock...................................................................................................................................... 8
2.7.2 Real Time Clock Battery ......................................................................................................................... 8
2.8 WISM+ ........................................................................................................................................................... 8
2.9 40 PIN HEADER................................................................................................................................................ 8
3USING AT COMMANDS WITH PC SERIAL PORT...................................................................................... 9
4SOFTWARE- WIF ............................................................................................................................................. 13
4.1 SETTING UP PC PORTS FOR WIF-WISM+ COMMUNICATIONS........................................................................ 13
4.1.1 Configuring PC USB port for WIF.exe................................................................................................. 13
4.1.2 Configuring PC Serial port for WIF.exe............................................................................................... 14
4.1.3 Configuring PC Ethernet port for WIF.exe........................................................................................... 15
4.2 STARTING WIF.EXE....................................................................................................................................... 16
4.2.1 Starting WIF.exe over the PC USB port ............................................................................................... 16
4.2.2 Starting WIF.exe over the PC Serial port ............................................................................................. 16
4.2.3 Starting WIF.exe over PC Ethernet port............................................................................................... 17
4.3 WIF.EXE OPERATION..................................................................................................................................... 18
4.4 WIF ACCESS POINT SCAN ............................................................................................................................. 18
4.5 CONFIGURING WISM+ ACCESS POINT TABLE............................................................................................... 19
4.6 CONFIGURE WISM+ ANTENNA..................................................................................................................... 19
5PERFORM A WIRELESS PING PC

WISM+.............................................................................................. 20
6AT MODE WIRELESS PING WISM+

PC................................................................................................... 24

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7USING THE PERFORMANCE TOOL IN AD-HOC MODE........................................................................ 25
8USING THE PERFORMANCE TOOL IN INFRASTRUCTURE MODE................................................... 27
9USING WISM+ IN BRIDGE MODE W/ACCESS POINT ............................................................................ 29
10 REGULATORY CONSIDERATIONS......................................................................................................... 32
10.1 US AND CANADA........................................................................................................................................... 32
10.2 EUROPE.......................................................................................................................................................... 32
11 DEV KIT DESIGN ......................................................................................................................................... 33
11.1 PCB STACK-UP............................................................................................................................................. 33
11.2 PCB LAYOUT DRAWING................................................................................................................................ 34
11.3 SCHEMATICS.................................................................................................................................................. 35

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1 OVERVIEW
This Dev Kit consists of a WLM400/WLM402 WISM+ (Wi-Fi Intelligent Serial Module) wireless module mounted to a
support board (Dev Kit) which allows you to connect a PC to the WISM+ using your choice of interface. A
configuration/performance tool (WIF.exe) is provided so you can set up custom WISM+ configurations, then and
measure the performance of the WISM+ wireless module from Laird Technologies.
The download and installation of this package provides you with the following executables
•DashBoard Performance Monitor (this is actually dboard.exe performance tool)
by clicking…
Start

All Programs

Wism+

•Wism+ Config Tool (this is actually WIF.exe configuration tool)
The download and installation of this package provides you with the following documentation
•Developer Kit Manual -this manual that you are reading
by clicking…
Start

All Programs

Wism+

Documentation

•Release Notes -important notes about this particular release
•SDK API Reference -description of the Software Developer Kit source code
•WISM+ User Manual -the User Manual for WISM+ module (WLM400 & WLM402)
•Wireless API Reference -description of the low level WISM API (WAPI) commands
The download and installation of this package also provides you the SDK (Software Developer Kit) source code
•Get familiar with the Dev Kit hardware (see section: “
.
This source code (written in c) represents a working sample of how to communicate with the WISM+.
Use the “SDK API Reference” as a guide to understanding the C functions. The directory of source files can be
found at the following path…
C:\Program Files\Laird Technologies\Wism+\wapi
There are several choices for which interface to use between the PC and the Dev Kit, but the easiest to use right out of
the box, is the USB. This is the suggested way to get started…
Hardware”).
•Set up the WISM+ USB driver (see section: “Configuring PC USB port for WIF.exe”).
•Launch WIF.exe (see section: “Starting WIF.exe over the PC USB port”).
•Become familiar with the configuration tool (see section: “WIF.exe Operation”).
•Use WIF.exe’s Performance Tool (UDP 802.11b mode) with the program “dboard.exe” to measure the
performance of the WISM+ (see section: “Using the Performance Tool in Ad-Hoc Mode”).
•Use WIF.exe’s Performance Tool (UDP 802.11b/g mode) in infrastructure mode with the program
“dboard.exe” between a laptop with an access point and another laptop with a WISM+
see section: “Using the Performance Tool in Infrastructure Mode”.
•Create an infrastructure mode (802.11b/g mode) network between a laptop with an access point and another
laptop with a WISM+. Share a folder on each, and then copy a large file across the wireless network, and
measure the performance of the WISM+…
see section: “Using WISM+ in Bridge Mode w/Access Point”.

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Note: All PC specific references are made to the Windows XP operating system.
1.1 Parts List
The WISM+ Dev Kit includes
•Dev Kit PCB with a WLM400 (FCC/IC) or a WLM402 (CE) WISM+ mounted
•Two Antennae installed on the Dev Kit and connected to the WISM+ antenna ports
•120VAC/7.5VDC wall brick power adapter
•USB cable “type A to mini” for WISM+ Dev Kit connection to connect to a PC
•RS-232 serial cable (female-female) for WISM+ COM port connection to a PC serial port
Note: an Ethernet cable is not provided.

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2 Hardware
2.1 Picture/Mechanical Drawing detailing high level components
Full schematics and assembly drawing are provided (see section: “Dev Kit Design”).
Blocks in this colour are essential things to become familiar with.
WISM+
DC POWER
JACK
POWER
SWITCH
Switching
Power
Supply
I2C
Header
SPI
Header
Reset
Button
Restore
Defaults
Button
10/100
Ethernet
Connector
Host USB
Device
connector
Real Time
Clock
Battery
(Optional)
Real Time
Clock
Host Com
Port
Power LED
RUN LED
WLAN LED
WISM+
Input Power
Jumper
Ground
Pads
Antenna
Mounting
Hole
Antenna
Mounting
Hole
WISM+
U.FL
Port #2
WISM+
U.FL
Port #1
SPI LED
Ethernet
PHI
Interface
WAKEUP
Button
Debug
Com
Port
40 pin
Header

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2.2 Host Interfaces
2.2.1 Host Com Port
This is a DCE COM port which operates at RS-232 levels. It is a male DB9 connector which is meant to be connected
to a PC serial port via the serial cable (female to female) provided with the Dev Kit.
DB9
PIN#
DB9
PIN NAME I/O
WISM+
PIN #
WISM+
PIN NAME DESCRIPTION
1 DB9_DCD O 59 CONNECTED
The WISM+ CONNECTED
2
pin is translated to RS-
232 levels (and drives pin 1 of the DB9) and indicates
to the PC that we have joined a network. When
“connected” WISM+ drives pin 59 pin low and is level
translated to a positive RS-232 level at the DB9.
DB9_TXD O 6 UART_TXD This pin is transmit data from the WISM+ back to the
PC driven through a RS-232 level translator.
3 DB9_RXD I 9 UART_RXD This is receive data from the PC to the WISM+. An RS-232 receiver converts RS-232 levels at the
connector to CMOS levels for WISM+.
4 DB9_DTR I 12 UART_DTR
This is an output from the PC and is converted to
CMOS levels to drive the WISM+ UART_DTR
5
input.
CURRENTLY THIS PIN HAS NO FUNCTION.
GROUND
-
-
-
This is tied to Dev Kit GROUND.
6 DB9_DSR O 8 DSR_READY
When the WISM+ cannot take any more data (all
buffers are full) it will assert
DSR_READY
7
pin
low—which is translated to a high on DB9 pin 6. -
This pin becomes DTR at the PC-
DB9_RTS I 10 UART_RTS
This is converted to CMOS levels to drive the WISM+
UART_RTS
8
input. The host can hold off the
WISM+ from transmitting serial data when
asserted- ONLY IF FLOW CONTROL IS ENABLED
ON WISM+.
DB9_CTS O 7 UART_CTS
WISM+ UART_CTS
9
pin drives an RS-232 level
translator to signal the host that it is ready to accept
serial data. WISM+ drives this pin low when it can
accept serial input from the host (creating a
positive RS-232 level voltage to the PC). If WISM+
cannot accept serial input, it drives the pin high
(creating a negative RS-232 voltage).
DB9_RI 0 - - This pin should be ignored at the host.

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The host com port can be used for the following things…
•HyperTerminal can be used on a PC to send AT commands to the WISM+ and display responses.
•WIF.exe can be configured to operate over host com port after an “at+quit”.
•The entire WAPI command interface can be implemented over the host com port after an “at+quit”.
2.2.2 SPI Header
This is the host communications SPI interface to the WISM+. This is a dual-row 10 pin male header which mates with
the Ardvark USB to SPI module http://www.totalphase.com/products/aardvark_i2cspi/. If you purchase this device,
and load the drivers, WIF.exe can be configured to operate over the SPI port. The following table indicates the pin out
of the SPI header…
Pin 1 is the lower left pin. The bottom row of pins are numbered 1,3,5…etc (with even pin numbers on top).
SPI Header
PIN#
SPI Header
PIN NAME I/O
WISM+
PIN #
WISM+
PIN NAME DESCRIPTION
1 SPI_REQ O 19 SPI_REQ
This is an output from the WISM+ which is
asserted (low) when the WISM+ has data to be
transferred back to the host.
2 GND
Ground pin connected to the ground plane of the
Dev Kit PCB.
3 RESERVED
This pin does go to a WISM+ port pin, but has no
function.
4
N/C
This pin is not connected
5 SPI_MISO O 28 SPI_MISO
This is the MISO (Master In Slave Out) data line
for the SPI interface. This should be connected
to the MISO of a SPI Master device.
6 N/C This pin is not connected
7 SPI_CLK I 30 SPI_CLK
This is the clock input for the SPI interface. This
is an input to the WISM+ because the WISM+ is
always a SPI SLAVE device, intended to be
connected to the clock output of a SPI Master
device.
8 SPI_MOSI I 29 SPI_MOSI This is the MOSI (Master Out Slave In) data line for the SPI interface. This should be connected
to the MOSI of a SPI Master device.
9 SPI_SS I 31 SPI_SS
This is the SPI Slave Select input to the WISM+.
This is driven low by a SPI Master device to
frame the data transfer.
10 GND
Ground pin connected to the ground plane of the
Dev Kit PCB.

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2.2.3 I2C Header
This is the WISM+ I2C two-wire interface. It is also connected to the real time clock on the Dev Kit board. These pins
are also compatible with the Ardvark USB to SPI/I2C device, but currently, the only function for the I2C bus is the
interface to the Real-Time-Clock populated on the Dev Kit PCB. In the future, this interface might be set up so the
WISM+ can interface to other defined I2C sensors.
2.2.4 10/100 Ethernet Connector
This is a standard RJ-45 Ethernet connector and is another host interface to the WISM+. A standard Ethernet cable
can be connected between a PC and the Dev Kit and WIF.exe can be configured to operate over the PC’s Ethernet
port.
2.2.5 USB Device “MINI” Connector
This is a standard USB mini connector which can be used to connect the Dev Kit to a PC over the host USB interface.
A USB cable is provided to connect to a PC. By default, WIF.exe will use the USB port for WISM+ communications.
This is the recommended interface to use for the Dev Kit right out of the box.
On the Dev Kit PCB, the USB connector is wired to the WISM+ USB device pins: WISM+ pin 4 (USB_DDM) and
WISM+ pin 5 (USB_DDP).
2.2.6 Debug Com Port
This is an RS-232 DCE serial port. This port outputs internal debug information which can be used by Laird
Technologies to attempt to debug WISM+ operations. There is no hardware flow control. DB9 Pin 2 is transmit data to
the PC, and DB9 pin 3 is receive data from the PC.
2.3 RF
2.3.1 WISM+ U.FL Port#1 & #2
These are the two WISM+ RF ports. They utilize a miniature U.FL type non-standard RF connector per FCC/IC rules.
The WISM+ Dev Kit comes with two antennae connected. This gives you the ability to test antenna diversity, or to
configure a single antenna.
NOTE: See section: “Configure WISM+ Antenna” for the details on the procedure to change the WISM+
antenna configuration.
2.3.2 Antenna Mounting Holes
These holes are used to mount antennae. Both mounting holes can have antennae installed and connected to WISM+
RF ports #1 & #2 U.FL connectors. The Dev Kit is shipped stock with both antennae and is configured out of the box
to use antenna diversity.
I2C Header
PIN#
I2C Header
PIN NAME I/O
WISM+
PIN #
WISM+
PIN NAME DESCRIPTION
1
I2C_CLK
I/O
23
I2C_CLK
This is the I2C clock line.
3
I2C_DAT
I/O
22
I2C_DAT
This is the I2C data line.
2,10 GND These pins are tied to the ground plane of the
Dev Kit PCB
4,5,6,7,8,9
N/C
These pins are not connected.

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2.4 POWER/GND
2.4.1 DC Power Jack
The DC power jack accepts a 2mm plug from the AC/DC wall-brick power supply adapter. It is recommended that you
use the wall-brick power supply which is shipped with the Developer Kit, although, the input voltage range is 5to 25
Volts (plus on the center).
2.4.2 Power Switch
The power switch when in the ON position will connect the DC power jack to the input of the switching power supply,
providing power to the entire development kit and the WISM+.
2.4.3 Switching Power Supply
The input to this switching power supply is provided from the DC power jack and is protected for reverse polarity with a
series diode. The output of the switching power supply provides power (3.3V) to the entire development board circuitry
as well as the WISM+.
2.4.4 WISM+ Input Power Jumper
This is a 4 position, dual row header. The two lower pins are connected to the WISM+ VCC input pins, and the two
upper pins are connected to the output of the 3.3V Dev Kit switching power supply. For normal operation, only one
jumper need be installed (shorting an upper pin to a lower pin).
To make WISM+ current measurements, remove the jumper and connect an ammeter between an upper and a lower
pin.
To insert an external DC power input, connect a power supply ground to one of the ground pads, and the positive side
of the power supply to one of the lower input power pins.
2.4.5 Ground Pads
These three thru-hole vias are made available simply to allow the user to have access to a system ground.
2.5 LEDs/INDICATORS
2.5.1 Power LED
This LED indicates DC power is being supplied to the WISM+ (DC power connection is made to the Dev Kit board and
the ON/OFF switch is in the ON position.
2.5.2 RUN LED
This LED is the WISM+ heartbeat. It will blink fast at boot time, pause, and then blink at a 1Hz rate once the WISM+
processor system has booted. This LED is driven by the WISM+ “HEARTBEAT” pin (WISM+ pin# 57).
2.5.3 WLAN LED
This LED will be lit when the WISM+ is wirelessly connected to another device (or joined a network). This LED is
driven by the WISM+ “ CONNECTED
2.5.4 SPI
” pin (WISM+ pin#59)
This LED will be lit whenever the SPI port is being used as the host interface, and communications are active over the
SPI port.

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2.6 BUTTONS
2.6.1 Reset Button
This provides a hardware reset to the WISM+. The WISM+ will re-boot after this has been pressed. This button drives
WISM+ RESET_IN
2.6.2 Restore Defaults Button
(pin# 21) to ground when it is pressed.
The Restore Defaults Button will restore the WISM+ with the saved environment which was set up at Laird
production/test time. The WISM+ must perform a boot while the Restore Defaults Button is pressed and remain
pressed until the heartbeat LED begins flashing in order for this function to work. This button is connected to the
WISM+ RESTORE pin (pin# 56).
2.6.3 WAKEUP Button
RESTORE is pulled LOW when the button is pressed.
This button is used to wake the WISM+ from a deep sleep. A WAPI API command is used over the host interface to
enter deep sleep. This button is connected to the WISM+ pin WAKEUP (pin# 63). When the button is pressed the
WISM+ WAKEUP pin is pulled to 3.3V which initiates a wake from deep sleep.
2.7 CLOCK
2.7.1 Real Time Clock
This is a Texas Instruments BQ32000 real time clock chip connected to the WISM+ I2C bus. WISM+ API commands
can be executed to both set and read the current time and date. This is only required in certain situations when using
WPA Enterprise security.
2.7.2 Real Time Clock Battery
This is the backup battery (not installed) for the real time clock on the Dev Kit board. The Real Time Clock chip will be
powered when the Dev Kit is powered up -even if the battery is not installed.
This battery is a standard lithium 3.0V 220mAH tabbed coin cell. If you want battery backup for the Clock, we
recommend part# CR2032RV-MFR (made by Renata) available at Mouser.
2.8 WISM+
Depending on which development kit which has been purchased, this will be either:
•WLM400 –for North America carrying FCC and IC approvals
•WLM402 –for Europe with CE regulatory compliance
2.9 40 Pin Header
The 40 pin header allows access to certain WISM+ pins. The pin out of the header (J5) is defined in the Dev Kit board
schematics- See Section: “Schematics”

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3 Using AT Commands with PC Serial Port
A PC serial port can be used to execute a set of simple AT commands using HyperTerminal. The following section
shows you how to set up a HyperTerminal session to communicate with the WISM+ using its host COM port.
Refer to the “AT Command Reference” for descriptions of the AT command set.
The WISM+ module (WLM400/402) implements a serial port at 3.3V levels. The WISM+ Dev Kit has industry standard
RS-232 level translators and provides a male DB-9 connector so you can connect to a PC serial port using the female-
female serial cable provided with the Dev Kit. The WISM+ dev kit is viewed as a DCE (Data Communications
Equipment). If you use a standard serial cable (male to female), you will need a gender changer (not a Null-Modem
adapter) at the WISM+ Dev Kit end.
If your PC does not have a serial port, you’ll need a USB to Serial converter. Most USB to Serial converters will
require a driver to be loaded. You must first follow the instructions which came with your USB to Serial converter and
install the driver as they recommend.
Once your serial port is in place and you know the COM port number (COM6, COM1 etc.) you can perform the
following steps to set up HyperTerminal to communicate from your PC to the WISM+ Dev Kit hardware over the serial
port…
•Launch HyperTerminal by clicking…
•Start ButtonAll ProgramsAccessoriesCommunicationsHperTerminal and you will see the following…
We have entered a name
for this HyperTerminal
Session (“WISM+ 38400”).
Select the “Telephone” icon and in the
“Name” field,
Click “OK” and you will see the following screen…
Select the COM port
connected your to the
WISM+ and you will
you will see this
Click “OK” and the following
COM port properties screen will
appear…

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Select 38400 for the baud rate (WISM+ defaults to 38400
baud on its COM port)
Select 8 bits, No Parity, and 1 Stop Bit
Select NO Hardware Flow Control because WISM+ is set
by default to NOT use Hardware Flow Control
•Click “OK”
•At the top (HyperTerminal menu) click…File

Properties and the following screen will appear…
Click on the “Settings” Tab
and you will see this
Click the “ASCII
Setup” tab and
you will see the
ASCII Setup
screen
Select the “Send line ends with line feeds” checkbox. This
will ensure that when you press the “ENTER” key while
typing in HyperTerminal, that a Line End character is sent
with the string to the WISM+.
Click the “OK” button and your
COM port configuration is complete.

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Now the PC serial port is configured to communicate with the WISM+ host com port. Now follow the steps below…
•Ensure that the WISM+ Dev Kit power switch is in the “OFF” position.
•Plug in the AC/DC power adapter to 120AC power outlet
•Plug the AC/DC power adapter’s DC power plug into the Dev Kit DC power jack
•Make sure that the serial cable supplied with the Dev Kit is connected between the PC (or PC USB to Serial
adapter).
•In HyperTerminal, make sure the “hook” is picked up (HyperTerminal is connected)
•Switch the WISM+ Dev Kit power switch to the “ON” position
•Wait 6 or 8 seconds for the WISM+ to boot
•You will see the “Heartbeat" LED” (labelled “RUN” on the WISM+ Dev Kit) begin to flash at a 1Hz rate
•You should then see the following on the HyperTerminal
The HyperTerminal screen shot above shows the notification from WISM+ (“WISM+ AT Port Ready”) that it has
successfully booted. Below the boot message, you can see the “W+>” prompt sent by WISM+ indicating that it is
ready for you to type an “at+xxxx” command. By simply pressing the “ENTER” key, another “W+>” prompt should be
displayed on the next line showing that the COM port connection is working in both directions.
If you do not see a new “W+>” prompt each time you press “ENTER”, you could have one of the following…
•You may not have selected the proper COM port in HyperTerminal
•Your USB to serial adapter may not be performing properly
•You may not have set up HyperTerminal COM port properties properly… 38400, 8bits, no parity, 1 stop bit,
NO hardware flow control
•You are not using the supplied serial cable between the Dev Kit and the PC serial port
•You may not have selected “Send line ends with line feed” in the HyperTerminal ASCII setup

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With the PC to WISM+ com port communications working properly, the following screen shot shows the result of
pressing “ENTER” multiple times, and then the execution of an “at+search” command…
Above, you can see the resulting response from the WISM+ “at+search” command. Two access points have been
found: HighBluff, and Pylon.
By typing “at+help” and “ENTER” at the WISM+ prompt, you will see a list of all of the AT commands which can be
exercised.
Refer to the “AT Command Reference”for descriptions of the AT commands.

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4 Software- WIF
WIF.exe has been installed by running the setup file from the download and is launched by clicking…
Start

All Programs

Wism+

Wism+ Config Tool
WIF.exe actually exists in the following folder… c:\Program Files\Laird Technologies\Wism+
The WIF.exe tool is used for the following:
•basic WISM+ configuration (over USB, Serial, Ethernet, or SPI)
•performance tool to measure WISM+ to Wireless Access Point/Router data through-put
By default, WIF.exe uses the USB interface to a Windows PC.
NOTE: WIF.exe can be made to communicate over any of the WISM+ host interfaces,
There are some specific things which need to be done depending upon which host interface of the WISM+ Dev Kit
which you are going to use. USB is the default, but Ethernet, RS-232, and SPI will also work.
The required preparation for using each of these interfaces will be described in the following sections.
4.1 Setting up PC ports for WIF-WISM+ communications
4.1.1 Configuring PC USB port for WIF.exe
To use the PC USB port to communicate with the WISM+ Dev Kit, a USB driver must be installed. This driver exists
on your PC after running SETUP.EXE. By default, WIF.exe will look for an active USB connection from the PC to the
WISM+.
Before starting the WIF.exe software, perform the following steps…
•Set the Dev Kit power switch to the OFF position
•Plug the AC/DC wall brick power adapter into an AC power outlet, and the other end into the Dev Kit’s DC
power jack.
•Attach the USB cable between the Dev Kit USB jack and your PC.
•Switch the Dev Kit power switch to the “ON” position
•Wait for the WISM+ to boot- the “Heartbeat LED” (labelled “RUN” on the WISM+ Dev Kit) will begin to flash at
a 1Hz rate and then you will hear the USB device register with the PC.
•Your PC will notify you that new hardware has been found
•When Window’s “New Hardware Wizard” pops up, instruct it to look for the appropriate driver on your PC
•Once the driver installation is complete, you are ready to proceed.
.
The wizard will find the USB driver and install it.
•You are now ready to start Wif.exe…
Now go to section: “Starting WIF.exe”

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4.1.2 Configuring PC Serial port for WIF.exe
By default at boot time, the WISM+ host COM port only interprets AT commands. You can use WIF.exe
configuration/performance tool over the WISM+ host port, but you must first send an “at+quit” command. After this
command is sent to the WISM+, there will be no response from WISM+, but the WISM+ host COM port will now be in
WAPI mode and is compatible with the WISM+ API commands used by WIF.exe.
To use WIF.exe over the WISM+ host COM port, perform the following steps:
•Follow the steps in section: “Using AT Commands with PC Serial Port” in order to set up your
PC’s serial port for communications.
•Issue an “at+quit” AT command using HyperTerminal (and there will be no response).
•Now quit the HyperTerminal session (or hang up the hook) which will release the serial port for WIF.exe.
•Now go to section: “Starting WIF.exe over the PC Serial port”

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4.1.3 Configuring PC Ethernet port for WIF.exe
WIF.exe can be configured to operate over the PC Ethernet port. There are a couple of things which must be done
first, in order to allow proper Ethernet operation…
•WinPcap must be installed on your PC.
•Any PC service which traps out of the ordinary network traffic must be halted.
WinPcap
WinPcap is a networking package which MUST be installed on your PC in order for WIF.exe to communicate to the
WISM+ over Ethernet. You would have been warned at install time if WinPcap didn’t exist on your PC. This
package is used by programs like “WireShark” to monitor network traffic (just one example). You must install this (if
you don’t have it) before attempting to use WIF.exe over the Ethernet port. It allows WIF.exe to capture and transmit
network packets bypassing the windows protocol stack.
To install WinPcap on your PC, go to “http://www.winpcap.org”. Click on the option on the left of the screen called
“Get WinPcap”. Under the “WinPcap 4.1.1 download” section, click on the link…
“WinPcap auto-installer (driver +DLLs)”
Download the installer and launch it on your PC. Follow the installation instructions so that it will automatically start up
at boot time.
Stopping services which interfere with network traffic
At Laird, we use Symantec virus protection and network traffic monitoring. Part of its job is to look for potentially
harmful network traffic which might be hacking into your computer. The WIF to WISM+ communications look
potentially harmful to these types of services, and the services will interfere and capture the network traffic thus
keeping WIF.exe from communicating with WISM+ over the Ethernet interface.
Click…StartControl Panel and double-click on the “Administrative Tools” icon. Next, double-click on the “Services”
icon. Once the “Services” window is open, scroll down to the virus protection services. The following screen shot is an
example of the Symantec services which are running (if you use Symantec virus protection). Over to the right, under
the “Status” column, you can see the services which have been started. Right click on the service, and click “Stop” on
all the Symantec services which indicate “Started”. Your PC will be vulnerable to attack, but you will only be
connected to the WISM+ Dev Kit. When you are finished using WIF.exe, turn the services back on to connect back to
your network, or simply re-boot.