DS361-3 Dec 03

©2003 Reg. No. 227 4001, England

Page 1

BRM01

Introduction

The coherenceRF BRM allows fast development of sophisticated wireless

applications by embedding the complexities of the radio. This allows the BRM to

present a very simple API to the Host device, thus significantly easing wireless

integration into the customer’s end product.

This document describes the programming requirements for the BRM when used in

the ‘Enhanced’ mode of operation. Enhanced mode provides a non-transparent

interface allowing a more flexible and complex system to be built.

System Scenarios

Before detailing the programmer’s interface, it is useful to understand the possible system architectures.

Fixed Point to Point

This describes the most basic system

architecture. Data is always sent to and

received from the same device.

The Basic or Enhanced mode of

operation can handle this.

Fixed Point to Multi-Point

This is another basic system architecture.

Each BRM sets up a connection to a fixed

BRM, but may also accept a connection

from any known BRM. The Basic or

Enhanced mode of operation can handle

this.

The example shows devices B, C and D

fixed to device A.

The term ‘Master’ denotes only the device

that initialises the connection.

A Typical application might be where

devices B, C or D set-up a connection to

A when an event occurs which must be

reported.

F

m

B

M

M

H

B

M

M

H

S

Y

S

Y

P

m

B

M

D

A

B

M

D

B

A

m

S

Y

S

Y

P

m

D

K

B

M

D

A

H

m

S

Y

B

M

D

D

S

Y

B

M

D

C

V

S

Y

B

M

D

B

S

Y

D

K

F