By Albert S. Huang
This e-book presents an creation to Bluetooth programming, with a particular concentrate on constructing actual code. The authors talk about the key innovations and methods thinking about Bluetooth programming, with particular emphasis on how they relate to different networking applied sciences. they supply particular descriptions and examples for developing functions in a few programming languages and environments together with Python, C, Java, GNU/Linux, home windows XP, Symbian sequence 60, and Mac OS X. No prior event with Bluetooth is believed, and the fabric is acceptable for a person with a few programming heritage. The authors position unique emphasis at the crucial thoughts and strategies of Bluetooth programming, beginning easily and permitting the reader to speedy grasp the elemental innovations sooner than addressing complex positive aspects.
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Additional info for Bluetooth Essentials for Programmers
The following chapters show exactly how to do this for a variety of platforms and programming languages. Although we have introduced the parts of Bluetooth most relevant to a software developer, by no means have we provided a comprehensive discussion of Bluetooth. As previously indicated, we have deliberately left out significant parts of the Bluetooth specification in favor of brevity and simplicity. A detailed introduction to the Bluetooth Profiles is beyond the scope of this book, and is easily an entire book (or number of books) by itself.
A piconet can have up to eight devices in total. That’s pretty straightforward. But how do they all agree on which frequencies to use and when to use them? That’s where the master comes in. One device on every piconet is designated the master, and has two roles. The first is to tell the other devices (the slaves) which frequencies to use – the slaves all agree on the frequencies dictated by the master. The second is to make sure that the devices communicate in an orderly fashion by taking turns.
R e c v (1024) ¯ print "received: " , data client sock . c l o s e ( ) ¯ server sock . py from bluetooth import * server address = "01:23:45:67:89:AB " ¯ port = 1 sock = B l u e t o o t h S o c k e t ( RFCOMM ) sock . connect ( ( server address , port ) ) ¯ sock . " ) sock . c l o s e ( ) 45 PAB CUNY993C-Huang 978-0-521-70375-8 July 18, 2007 8:41 Bluetooth Essentials for Programmers In the socket programming model, a socket represents an end point of a communication channel. Sockets are not connected when they are first created, and are useless until a call to either connect (client application) or accept (server application) completes successfully.