DVK-WLM400 Laird Technologies, DVK-WLM400 Datasheet - Page 16

• Manufacturer Part Number: DVK-WLM400
• Description: DEVELOPMENT KIT WISM+
• Manufacturer: Laird Technologies
• Type: Transceiverr

Specifications of DVK-WLM400

• Frequency: 2.4GHz
• Processor Series: WISM+
• Silicon Manufacturer: Laird Technologies
• Kit Application Type: Communication & Networking
• Application Sub Type: Wi-Fi Intelligent Serial
• Kit Contents: PCB, 2x Antennas, Power Adapter, USB Cable, RS-232
• Rohs Compliant: Yes
• For Use With/related Products: WLM400
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Now the PC serial port is configured to communicate with the WISM+ host com port. Now follow the steps below…
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…
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© Laird Technology 2010
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
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
Version 1.00
WISM+ DVK MANUAL
Page 11