Digilent PmodBT2 Handbuch

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Revision: August 17, 2011
Note: This document applies to REV A of the board.
Overview
The PmodBT2 is a powerful peripheral module
employing the Roving Networks® RN-42 to
create a fully integrated Bluetooth interface.
Features include:
Bluetooth 2.1/2.0/1.2/1.1 Compatible
•
Simple UART Interface
•
A wide range of modes including: Slave
•
Mode, Master Mode, Trigger Master
Mode, Auto-connect Master Mode,
Auto-connect DTR Mode, and Auto-
connect ANY Mode.
Small form factor: 1.5" x 0.8"
•
Functional Description
The PmodBT2 uses a standard 12-pin
connection and communicates via UART.
There is a secondary SPI header on the board
for updating the RN-42 firmware if needed.
Jumper Settings
The PmodBT2 has several modes available to
the user via jumper settings. JP1 through JP4
provide various modes of operation as
indicated in Table 1 below. Each jumper is
active when shorted. JP1 restores the device
to factor default settings after three transitions
of the jumper setting (short-to-open or open-to-
short). After the third transition, the device
returns to factor default except for the
Bluetooth name. The other three jumpers, JP2-
JP4, only sample in the first 500 ms of
Jumper
JP1 (PIO4)
JP2 (PIO3)
JP3 (PIO6)
JP4 (PIO7)
Table 1: Set Jumper Description
Doc: 502-214
Copyright Digilent, Inc. All rights reserved. Other product and company names mentioned may be trademarks of their respective owners.
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Description
Factory Default
Auto Discovery/Pairing
Auto Connect
Baud Rate Setting (9600)
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operation to allow the pins that they tie to on
the RN-42 module to serve a separate purpose
later in the modules operation. JP2 enables
pairing with a special device class defined by
the user in software. This may be used so that
the PmodBT2 operates as a substitute for an
RS232 cable. JP3 enables auto connect to a
stored address defined by the user. Finally,
JP4 chooses whether to operate at the stored
baud rate (115.2kbps default) or a baud rate of
9600 regardless of the software selected rate
when shorted. For more detailed information
Pullman, WA 99163
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