Getting Started with Bluetooth Low Energy: Tools and by Kevin Townsend, Carles Cufí, Akiba, Robert Davidson

By Kevin Townsend, Carles Cufí, Akiba, Robert Davidson

With Bluetooth Low strength (BLE), clever units are approximately to develop into even smarter. This sensible advisor demonstrates how this interesting instant know-how is helping builders construct cellular apps that proportion info with exterior undefined, and the way engineers can achieve effortless and trustworthy entry to cellular working systems.

This booklet offers a superior, high-level evaluation of ways units use BLE to speak with one another. You’ll study helpful reasonably cheap instruments for constructing and trying out BLE-enabled cellular apps and embedded firmware and get examples utilizing numerous improvement platforms—including iOS and Android for app builders and embedded structures for product designers and engineers.

know the way info is geared up and transferred by way of BLE devices
discover BLE’s options, key boundaries, and community topology
Dig into the protocol stack to understand how and why BLE operates
find out how BLE units become aware of one another and determine safe connections
arrange the instruments and infrastructure for BLE program development
Get examples for connecting BLE to iPhones, iPads, Android units, and sensors
enhance code for an easy machine that transmits middle cost info to a cellular device

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Extra info for Getting Started with Bluetooth Low Energy: Tools and Techniques for Low-Power Networking

Sample text

In the case of a read operation, it is up to the client to parse the value and understand the data type based on the UUID of the attribute. On the other hand, during a write operation, the client is expected to provide data that is consistent with the attribute type and the server is free to reject the operation if that is not the case. ATT operations The set of operations possible over ATT fall within the following categories: Error Handling Used by the server to respond to any of the requests when an error occurs, this includes only: Error Response Sent as a response to a request in lieu of the corresponding operation response whenever an error prevented the request from being executed on the server.

Chapter 4 provides more information on ATT itself and how it enables the Generic Attribute Profile (GATT). Security Manager (SM) The Security Manager (SM) is both a protocol and a series of security algorithms de‐ signed to provide the Bluetooth protocol stack with the ability to generate and exchange security keys, which then allow the peers to communicate securely over an encrypted link, to trust the identity of the remote device, and finally, to hide the public Bluetooth Address if required to avoid malicious peers tracking a particular device.

Non-resolvable private address This type of address is not commonly used. Also a randomly generated number, it represents a temporary address used for a certain amount of time. Resolvable private address Resolvable private addresses form the basis of the privacy feature. They are gener‐ ated from an identity resolving key (IRK) and a random number, and they can be changed often (even during the lifetime of a connection) to avoid the device being identified and tracked by an unknown scanning device.

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