Laird DVK-WLM400, Manual, Page: 16 / 43

WISM+ DVK MANUAL
Version 1.00 Page 11
©
Laird Technology 2010
Now the PC serial port is configured to communicate with the WISM+ host com port. Now follow the steps below…
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Ensure that the WISM+ Dev Kit power switch is in the “OFF” position.
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Plug in the AC/DC power adapter to 120AC power outlet
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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).
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In HyperTerminal, make sure the “hook” is picked up (HyperTerminal is connected)
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Switch the WISM+ Dev Kit power switch to the “ON” position
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Wait 6 or 8 seconds for the WISM+ to boot
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You will see the “Heartbeat" LED” (labelled “RUN” on the WISM+ Dev Kit) begin to flash at a 1Hz rate
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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…
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You may not have selected the proper COM port in HyperTerminal
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Your USB to serial adapter may not be performing properly
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You may not have set up HyperTerminal COM port properties properly… 38400, 8bits, no parity, 1 stop bit,
NO hardware flow control
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You are not using the supplied serial cable between the Dev Kit and the PC serial port
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You may not have selected “Send line ends with line feed” in the HyperTerminal ASCII setup