BT740 Development Kit
Quick Start Guide
Americas: +1-800-492-2320 Option 3
Europe: +44-1628-858-940
Hong Kong: +852-2268-6567 x026
www.lairdtech.com/wireless
15
Laird Technologies
When the device is successfully added and the two virtual COM ports are ready to use, click Close
4.
(
Figure 34
).
Figure 34: Virtual COM ports - ready to use
The two virtual com ports display in the COM Ports tab (
Figure 35
).
Figure 35: COM Ports tab
Explanation of this different behaviour can be found at the very last section of this guide,
Difference between
BTv2.0 and BTv2.1
.
Make Serial Port Profile Data (SPP) Connection
When pairing is complete, two virtual COM ports are created by the BT stack on the computer. The BT stack
also assigns the COM port numbers so the numbers vary depending on the computer.
To make the SPP connection from PC to module, open the outgoing COM port (COM 40) with a terminal
program. MpBTHost opens a new dialog box which enables data to be sent back and forth in a terminal
emulation window fashion (
Figure 36
).