Bluetooth Protocol

Introduction:

ᛒlueᚼooth Protocol:

BT-Specification from Bluetooth SIG Working Groups: https://www.bluetooth.com/specifications/bluetooth-core-specification/

Guide from APPLE: https://developer.apple.com/accessories/Accessory-Design-Guidelines.pdf

Bluetooth Low Energy operates in the 2.4 GHz ISM band The Bluetooth Low Energy spectrum is divided into 40 RF channels Long-range mode (Coded PHY) can be used for enhancing reliability You can switch between using the three PHYs: Coded PHY, 1M PHY, and 2M PHY on the fly during a connection (master –> slave vs. slave –> master).

Strategies in a function and case decision:

point-to-point, star, and mesh topologies

Bluetooth 5.0 introduced two new modes: high-speed and long-range

Fact:

100% of shipped smartphones, laptops, and tablets will support both Bluetooth Low Energy and Bluetooth Classic in 2024 ( https://www.novelbits.io/how-bluetooth-low-energy-works-21-interesting-facts/ )

There is no defined maximum number of connections between a Central and Peripherals per the Bluetooth spec

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