Chapter 3 - At Commands And Configuration Examples; At Command Reference Guide; Using At Commands - Multitech MultiConnect BT MTS2BTA User Manual

Chapter 3 – AT Commands and
Configuration Examples

AT Command Reference Guide

AT commands for the Serial-to-Bluetooth Adapter are published in a separate Reference Guide included
on the product CD and posted on the Multi-Tech Web site.

Using AT Commands

Default Settings / Changing Configuration
Parameters, such as the Bluetooth Name, Service Name, Class of Device and Serial Port settings
can be viewed and configured. This can be done locally through the serial port UART or from a
remote Bluetooth RF link. To configure the MultiConnect Bluetooth Adapter, the device must be in
command mode by issuing +++. While in command mode, the adapter will accept ASCII bytes as
commands.
The communications settings should match the settings used when the adapter connects. For
example, the defaults are:
9600bps
8 bits
No Parity
1 stop bit
Hardware flow control enabled.
If you change these parameters, you have the option to store them permanently in the non-
volatile memory.
Run your favorite terminal emulator, HyperTerminal, or other program.
•
Type AT on your screen and follow it with a carriage return <cr>. You should see "OK"
returned to you. This will verify that your cable and communications settings are correct.
When the adapter is not connected to another Bluetooth device, you can type the AT
commands directly into the UART; e.g., you do not have to type +++ to change from data
mode to command mode.
•
Now you can enter any of the AT commands discussed in the following sections. Follow
these commands by <cr>. Valid commands will return an "OK" or a valid response. Invalid
commands will reply ERROR.
•
To return to data mode, type ATMD. You can now pass or receive data from a remote
connected Bluetooth device.
Notes:
•
If you change communications parameter settings, remember to change your terminal or
emulator communications settings to correspond to the newly created parameter settings.
•
AT commands will not echo back to the terminal.
Multi-Tech Systems, Inc. Serial-to-Bluetooth Adapter User Guide (S000370B)
Chapter 3 – AT Commands and Configuration Examples
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