Rev: 13 September 2005
Class 2 Bluetooth module - F2M03C2
Datasheet
5.1.3
Settings
The default settings allow the user to communicate via Bluetooth, without sending any configuration
commands, as soon as a successful connection has been established. Information sent and received on
the serial interface of the WU unit at 38400 bps is transmitted transparently between the two connected
devices. The default settings are valid as long as the user has made no configuration.
When there is no Bluetooth connection established it is possible to configure the WU firmware via
commands sent on the serial interface. All settings changed by the user are stored in persistent memory.
The following serial settings are used for configuration mode and are not configurable:
Parameter
Default Value
Baud rate
38400
Data bits
8
Parity
None
Stop bits
1
Hardware flow control
On
To be able to send commands to the Wireless UART firmware, it must be set in Host Controlled Mode
(HCM). As previously described the Wireless UART firmware can only enter HCM when no Bluetooth
connection is established.
Once entered HCM there are several commands that can be issued:
•
Configuration commands
•
Software / Hardware reboot
•
Inquiry (search for Bluetooth devices in the neighborhood)
•
Pairing (device security - authentication and encryption)
•
Advanced configuration commands
•
SCO commands
•
Information commands
•
Control commands
Configuration Commands
There are several settings stored in the Wireless UART firmware that can be read and modified by using
the configuration commands.
Examples of these settings are:
•
Local Bluetooth name
•
Local SDP-service name
•
Operating mode
•
Serial port settings
•
Bluetooth security settings (authentication, encryption)
There are two normal operating modes:
•
Connecting mode – Bluetooth master
•
Endpoint mode – Bluetooth slave
In Connecting mode the Wireless UART firmware will continuously try to establish a Bluetooth connection to
a specified remote Bluetooth device in the neighborhood (Bluetooth master).
In Endpoint mode the Wireless UART firmware may accept connections from remote Bluetooth devices. A
connection request will be accepted when the specified rules are fulfilled (Bluetooth slave).
© 2003 Free2move AB
Page 13(46)
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