LEGO MINDSTORMS NXT Bluetooth Developer Kit.pdf

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TABLE OF CONTENTS ......................................................................................................2

HARDWARE SPECIFICATION FOR THE NXT BRICK......................................................3

BLUETOOTH ® FUNCTIONALITY WITHIN THE NXT .........................................................4

Bluetooth functionality within the NXT Brick ........................................................................................................... 4

INTERFACING WITH THE BLUECORE TM CHIP ................................................................6

UART interface between the ARM7 and the BlueCore TM chip .................................................................................. 7

BLUETOOTH ® DEVICES COMMUNICATING WITH THE NXT..........................................8

Bluetooth ® communication with LEGO ® MINDSTORMS ® NXT programs .......................................................... 8

Sending Bluetooth ® data to external Bluetooth devices ............................................................................................. 8

Reading Bluetooth ® data from external Bluetooth devices......................................................................................... 9

APPENDIX ........................................................................................................................10

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The LEGO ® MINDSTORMS ® NXT brick uses various advanced electronics to yield its broad functionality. For details

on the hardware functionality of the LEGO ® MINDSTORMS ® NXT, see the LEGO MINDSTORMS NXT Hardware

Developer Kit document.

Here is a summary list of hardware specifications for the NXT brick:

Main processor:

Atmel ® 32-bit ARM ® processor, AT91SAM7S256

- 256 KB FLASH

- 64 KB RAM

- 48 MHz

Co-processor:

Atmel ® 8-bit AVR processor, ATmega48

- 4 KB FLASH

- 512 Byte RAM

- 8 MHz

Bluetooth wireless communication

CSR BlueCore TM 4 v2.0 +EDR System

- Supporting the Serial Port Profile (SPP)

- Internal 47 KByte RAM

- External 8 MBit FLASH

- 26 MHz

USB 2.0 communication

Full speed port (12 Mbit/s)

4 input ports

- 1 high-speed port, IEC 61158 Type 4/EN 50170 compliant

3 output ports

6-wire interface supporting input from encoders

Display

100 x 64 pixel LCD black & white graphical display

Loudspeaker

Sound output channel with 8-bit resolution

- Supporting sample rate 2-16 KHz

4 button user-interface

Rubber buttons

Power source

6 AA batteries

- Recommend alkaline batteries

- Rechargeable Lithium-Ion battery 1400 mAH is available

Connector

6-wire industrial-standard connector, RJ12 Right side adjustment

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6-wire interface supporting both digital and analog interface

- View area 26 x 40.6 mm

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