Download Bluetooth Low Energy: The Developer's Handbook by Robin Heydon PDF

By Robin Heydon

ISBN-10: 013288836X

ISBN-13: 9780132888363

The First entire advisor to Bluetooth Low strength: the way it Works, What it might Do, and the way to use It

 

A radical departure from traditional Bluetooth know-how, Bluetooth low power (BLE) allows step forward instant functions in industries starting from healthcare to transportation. working on a coin-sized battery, BLE can function reliably for years, connecting and lengthening every little thing from own sector community units to next-generation sensors. Now, one of many standard’s prime builders has written the 1st entire, available advent to BLE for each process developer, clothier, and engineer.

 

Robin Heydon, a member of the Bluetooth SIG corridor of popularity, has introduced jointly crucial details formerly scattered via a number of criteria records, sharing the context and professional insights had to enforce high-performance operating structures. He first stories BLE’s layout pursuits, explaining how they drove key architectural judgements, and introduces BLE’s cutting edge utilization types. subsequent, he completely covers how the 2 major components of BLE, the controller and host, interact, after which addresses key matters from defense and profiles via trying out and qualification. this information has enabled the production of Bluetooth clever and Bluetooth shrewdpermanent prepared units.

 

This consultant is an vital better half to the professional BLE criteria files and is for each technical expert and decision-maker contemplating BLE, making plans BLE items, or reworking plans into operating systems.

 

Topics Include

  • BLE gadget varieties, layout targets, terminology, and center innovations
  • Architecture: controller, host, purposes, and stack splits
  • Usage versions: presence detection, info broadcasting, connectionless types, and gateways
  • Physical Layer: modulation, frequency band, radio channels, strength, tolerance, and diversity
  • Direct attempt Mode: transceiver trying out, interfaces, and HCI
  • Link Layer: nation laptop, packets, channels, broadcasting, encryption, and optimization
  • HCI: physical/logical interfaces, controller setup, and connection administration
  • L2CAP: channels and packet constitution, and LE signaling channels
  • Attributes: grouping, providers, features, and protocols
  • Security: pairing, bonding, and knowledge signing
  • Generic entry Profiles: roles, modes, strategies, defense modes, facts advertisements, and companies
  • Applications, units, prone, profiles, and peripherals
  • Testing/qualification: beginning initiatives, picking positive aspects, making plans, trying out, compliance, and more

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Additional resources for Bluetooth Low Energy: The Developer's Handbook

Sample text

This data can be anything, the current weather in Kona, Hawaii, the time of the next train from Seoul to the airport, or just some inane chatter between friends. The client, on the other hand, doesn’t have any data. It just sends requests to servers. Once it receives the replies from a server, it can carry out the task it was assigned to do, such as display information to the user or notify the user that somebody they know has posted something on a wall or tweeted. The main benefit of the client-server architecture is this defined split between the client and the server.

The system has therefore been optimized for low cost above interesting research-based networking topologies. 45GHz band that Bluetooth low energy uses is already very crowded. 4. In addition, a number of proprietary radios are also using the band, including X10 video repeaters, wireless alarms, keyboards, and mice. A number of devices also emit noise in the band, such as street lights and microwave ovens. It is therefore almost impossible to design a radio that will work at all times with all possible interferers, unless it uses adaptive frequency hopping, as pioneered by Bluetooth classic.

2. Loose Coupling In object-oriented software, each individual component of the system is meant to be designed as a separate object with no side effects. Those interactions that do occur between components can then be explicitly defined and tested. By reducing the dependancies to a minimum, each service implementation can be changed without risk that unexpected side effects are either introduced or lost. Taking this to its logical conclusion, there should be a separation between the formal contract and its implementation.

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Bluetooth Low Energy: The Developer's Handbook by Robin Heydon


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