Bluetooth

 

BLUETOOTH WIRELESS MODULE


25.9 X15.3 X 2.5 mm

 

INTRODUCTION

 

The Bluetooth1 wireless module is an optional upgrade(addition) to the WiWiz1 and uSIM. The module is preengineered, prequalified, and provides a fully embedded, ready to use Bluetooth functional interface. The module provides reprogrammable, embedded firmware for serial cable replacement deploying the Bluetooth Serial PortProfile (SPP). OEM specific parameters and settings can be easily loaded into these modules. The serial embedded firmware provides an easy to use AT style command interface over a UART. The Bluetooth module is capable of storing OEM default settings, and is upgradable over the UART.

 

Firmware Features


Wireless Data Communications Subsystem

Embedded Bluetooth Serial Port Profile (SPP) (default bluetooth profile)

Easy To Use AT Command Interface Using UART (serial port)

OEM Programmable Configuration

Remote Command And Control

Multipoint / Piconet Capable

Custom Firmware Available


Hardware Features

                     

CSR BlueCore 4 Ext Chipset

Bluetooth v2.1 + EDR

2.4GHz Class 2 Radio

Range Typically Exceeds 20m( can be reduced to 1 meter using power control)

High Speed Data Rate Up To 3Mbps

UART, USB, SPI Interfaces

Onboard Antenna

8Mbit Flash Memory

CSR's BlueCore™4-Ext device implements the Enhanced Data Rate (EDR) Bluetooth® specification, allowing it to deliver data rates that are 3-times faster than current v1.2 Bluetooth devices. This increased transfer rate also means that, for a given amount of data, the radio will be active up to 3 times less than a v1.2 radio, reducing power consumption. BlueCore4 is also fully backwards-compatible with existing Bluetooth v1.1 and v1.2 devices.


Security


The Bluetooth module has programmable power control and the radiated power can be reduced to -20dbm for a range of approximately 1 meter. This is comparable to infrared devices. A cell phone or PDA with Bluetooth SPP(serial port profile) can be used to configure and/or obtain data/status from the WIWIZ1 or uSIM device.


Industrial Applications


The Motorola Droid using the Android OS supports the Serial Port Profile(SPP) enabling the transfer of data between the hand held device and industrial equipment. Intelligent devices(cell phones, PDAs, netbooks, laptops, etc) can be used to transfer data, check status and configure sensor devices in the field. Numerous other smart cell phones from Nokia, Samsung, LG, et al support the SPP protocol. The range of the Bluetooth1 is ~20< meters thus insuring good security.

The Bluetooth module is fully upgradable with additional Bluetooth profiles. These are some of the additional profiles that are available for the Bluetooth.

.

Standard Bluetooth® Data Profiles:


The Bluetooth data module contain the firmware to support many of these standard profiles. Contact WiHART systems for further information and customization options


AVRCP Audio Video Remote Control Profile


AVRCP is designed to provide a standard interface to control TVs, hi‐fi equipment, or others to allow a single remote control (or other device) to control all the A/V equipment to which a user has access. It may be used in concert with A2DP or VDP.


BIP Basic Imaging Profile


BIP defines how an imaging device can be remotely controlled, how an imaging device may print, as well as how an imaging device can transfer images to a storage device. BIP also includes the ability to resize and convert images to make them suitable for the receiving device.


BPP Basic Printing Profile


BPP allows devices to send text, emails, vCards, images or other items to printers based on print jobs. Prints emails, images, vCard, vCalendar, text messages and plain or formatted text from devices like a mobile phone or PDA to a printer.

CTP Cordless Telephone Profile


Used for either a dedicated cordless phone or a mobile phone that acts as a cordless phone when in proximity to a base station implementing the CTP.


DUN Dialup Networking Profile


DUN provides a standard to access the Internet and other dial‐up services over Bluetooth technology. The most common scenario is accessing the Internet from a laptop by using your mobile phone as a wireless dial‐up modem.


FTP File Transfer Profile


FTP defines how folders and files on a server device can be browsed by a client device. Once a file or location is found by the client, a file can be pulled from the server to the client, or pushed from the client to the server using GOEP. A typical scenario would be transferring files wirelessly between two PCs or laptops, or browsing and retrieving files on a server.


GAVDP General Audio/Video Distribution Profile


GAVDP provides the basis for A2DP and VDP, the basis of the systems designed for distributing video and audio streams using Bluetooth technology. A typical scenario is a set of wireless stereo headphones and a music player, such as an MP3 player or Walkman. The music player sends messages to the headphones to establish a connection or adjust the stream of music, or visa versa.


GEOP Generic Object Exchange Profile


GOEP is used to transfer an object from one device to another. A simple scenario would be using Bluetooth technology to send information like files, vCards, vCalendars and images between your mobile phone or PDA and a PC.


HID Human Interface Device Profile


The HID profile defines the protocols, procedures and features to be used by Bluetooth HID such as keyboards, pointing devices, gaming devices and remote monitoring devices. The most common usage would be your wireless desktop, keyboard, mouse, etc.


OPP – Object Push Profile


OPP defines the roles of push server and push client. These roles are analogous to and must interoperate with the server and client device roles that GOEP defines. An example scenario would be the exchange of a contact or appointment between two mobile phones, or a mobile phone and a PC.


PAN – Personal Area Networking Profile


PAN describes how two or more Bluetooth enabled devices can form an ad‐hoc network and how the same mechanism can be used to access a remote network through a network access point


SDAP Service Discovery Application Profile


SDAP describes how an application should use SDP to discover services on a remote device. It illustrates several approaches to managing the device discovery via Inquiry and Inquiry Scan and service discovery via SDP. The ideas contained in the SDAP specification augment the basic specifications provided in GAP, SDP, and the basic processes of device discovery. The use cases for DAP are intended to encompass the majority of service discovery scenarios associated with all profiles and devices.


SPP Serial Port Profile


The SPP is a very popular widely used profile for transmitting data in place of a serial cable. SPP defines how to set up virtual serial ports and connect two Bluetooth enabled devices. A scenario would be using two devices, such as PCs or laptops, as virtual serial ports and then connecting the two devices via Bluetooth technology.

 

SYNC Synchronization Profile


The SYNC profile is used in conjunction with GOEP to enable synchronization of calendar and address information (personal information manager [PIM] items) between Bluetooth enabled devices.

 

VDP Video Distribution Profile


VDP defines how a Bluetooth enabled device streams video over Bluetooth wireless technology. Sample use cases include the streaming of a stored video from a PC media center to a portable player or streaming from a digital video camera to a TV.


 

BlueTooth Piconets


Up to 8 active Bluetooth devices can form or become part of temporary small networks called Piconets. Bluetooth allows wireless data connections within the Piconet to be dynamically added and removed between nearby devices. Because the Bluetooth system hops over 79 channels, the probability of interfering (overlapping) with another Bluetooth system is less than 1.5%. This allows several Bluetooth Piconets to operate in the same area at the same time with minimal interference.

Bluetooth communication always designates one of the Bluetooth devices as a main controlling unit - master unit. Other devices that follow the master unit are slave units. This allows the Bluetooth system to be non-contention based (no collisions). This means that after a Bluetooth device has been added to the temporary network (the Piconet), each device is assigned a specific time period to transmit and they do not collide or overlap with other units operating within the same Piconet.

Piconets can be setup to interact with other Piconets to form larger networks called Scatternets. Scatternets allow the master in one Piconet to operate as a slave in another Piconet. While this allows Bluetooth devices in one Piconet to communicate with devices in another Piconet (cross-Piconet communication), the use of Scatternets requires synchronization (and sharing of data transmission Bandwidth) making them less efficient.

 

 

 

PICONET

 

 

Latest News

04-17-2010 | DASH7

WiHART Sytems announces a DASH7 product for Asset Tracking and Sensor data acquisition.  DASH7 is the  RF protocol standard IEC 18000-7.  It operates at the unlicensed 433 MHz band for long distance communication with low noise propagation.   The 433 MHz band is glob...

Read More...

04-04-2010 | WiVIB1

WiHART Systems announces game changing technology for wireless vibration measurement and condition based maintenance.  With the introduction of the WiVIB1 wireless vibration module WiHART Systems brings vibration sensing into the 21st century.  The tiny device which is about 1" square i...

Read More...

View All News Articles