Rev: b
Low power Bluetooth
™ Module with antenna- F2M03GLA
Datasheet
5.1
Wireless UART
Free2move’s Wireless UART (WU) firmware is intended to replace the serial cable(s) connecting portable
and/or fixed electronic devices. Key features are robustness, high configurability, high security, low
complexity and low power.
The WU firmware is compliant with the Bluetooth Serial Port Profile (SPP) for setting up emulated serial
cable connections between connected devices. There is no additional need for drivers or an external host
with Bluetooth software when using the WU firmware.
Hardware
BASEBAND and RF
APPLICATION INTERFACE
HCI
LINK MANAGER
L2CAP
Device
Manager
RFCOMM
SDP
Wireless UART application (SPP)
F2M03
Host
Application
Wireless UART architecture
The WU application runs on top of an embedded Bluetooth v2.0 + EDR compliant stack, including protocols
up to the RFCOMM layer. Point-to-point connections are supported. This means that a unit running WU can
be either a master or slave unit.
The WU firmware offers one asynchronous data channel and one synchronous voice channel, both
channels capable of full duplex transmissions.
When a successful Bluetooth connection is established the data channel and the voice channel can be
used simultaneously or separately. All information sent/received at the data/voice interface of the WU unit is
exchanged transparently via Bluetooth with the connected remote device.
The WU unit is set to operate in a default mode that allows the user to communicate via the asynchronous
data channel over Bluetooth, as soon as a successful connection has been established. This can be
achieved without sending any configuration commands to the WU firmware. However, as long as there is
no Bluetooth connection established, it is possible to configure the WU firmware via hex commands
(described in the document Wireless_UART_protocol) or using a Windows configuration software.
© 2006 Free2move AB
Page 10(44)
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