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Windows 7 Serial Bluetooth Connection
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by Matthew Ford 1st October 2012
(originally posted 1st August 2012)
© Forward
Computing and Control Pty. Ltd. NSW Australia
All rights reserved.
The Bluetooth pfodAppTM for AndroidTM uses serial Bluetooth connections.
pfodAppTM for Android allows you to control micro-controllers, like Arduino, via bluetooth, from your Android phone. No Android programming required.
For testing purposes it is convenient to make serial Bluetooth connections between you mobile phone and a terminal session on your PC. This page describes how to connect from an Android mobile to a terminal session running on Windows 7. This is an alternative to the preferred method which used a USB Bluetooth connection. The preferred method can be used for Windows, Mac or Linux and also provides direct serial access to the bluetooth module for configuration.
Enable
Bluetooth on PC
Add Bluetooth Device
Find
Assigned COM Port
Check the COM port Baud
Rate
Install Terminal Program
Connecting
pfodApp™ to TeraTerm
First make sure Bluetooth is enabled on your computer. On my Sony Viao this dialog pops up each time I start the computer.
Press the Windows Start Button and search for “add bluetooth”
(click image for full size image)
Choose “Add a bluetooth device” Then on you Android mobile open the menu
and choose “Settings” and from there choose “Wireless & networks and then “Bluetooth settings” and click on “Discoverable”
The PC needs to scan for the mobile while it is “Discoverable”. When the PC finds the mobile, the PC displays
(click
image for full size image)
Click “Next” and Windows will attempt to
pair with the mobile
(click
image for full size image)
The mobile will display the pairing request. 
Note
the number after PASSKEY is the same as that displayed by the PC.
Click Pair on the mobile and click Next on the PC to
complete the pairing. The PC then displays 
(click
image for full size image)
To find out which COM port has been allocated to the
mobile, click on the Windows Start button and search for “bluetooth”
and choose “Change Bluetooth settings”
(click
image for full size image)
Click on the “COM Ports” tab to see which
port has been allocated to your mobile.
(click
image for full size image)
Then check the baud rate that this COM port is set
to. Press the Window Start button and search for “device
manager”
(click
image for full size image)
In the Device Manager open the COM ports and right
click on the COM port Number assigned to your mobile and click on the
“Port Settings” tab check or change the baud
rate.
(click
image for full size image)
In this case the baud rate is 9600.
Then install a terminal program as described here.
Before trying to connect from
pfodApp on your mobile to the computer, first check that the computer
is set to accept connections. Open the “ Change Bluetooth
settings” dialog as described above under Find
Assigned COM Port and click on the Option tab and tick the “Allow
Bluetooth devices to connect to this computer” 
(click
image for full size image)
Note: The computer is NOT discoverable. So the only devices that try and connect are those that already know the computers bluetooth address.
Finally follow the steps described here to connect to your terminal session from your mobile's pfodApp. Note: the timeout for the PC connection is set to 0. You can now test various micro-page pfod messages to see how they will be displayed on the pfodApp and what command messages the pfodApp will send back when the user selects the various options.
The General Purpose Android/Arduino Control App.
pfodDevice™ and pfodApp™ are trade marks of Forward Computing and Control Pty. Ltd.
Contact Forward Computing and Control by
©Copyright 1996-2020 Forward Computing and Control Pty. Ltd.
ACN 003 669 994