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en:examples:communication:bluetooth [2012/05/10 15:41] – raivo.sell | en:examples:communication:bluetooth [2020/07/20 09:00] (current) – external edit 127.0.0.1 | ||
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====== Bluetooth ====== | ====== Bluetooth ====== | ||
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===== Theory ===== | ===== Theory ===== | ||
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Bluetooth is a proprietary open industry standard for wireless communication between devices over a short distance. Bluetooth communication uses short-wave radio transmissions, | Bluetooth is a proprietary open industry standard for wireless communication between devices over a short distance. Bluetooth communication uses short-wave radio transmissions, | ||
Bluetooth is managed by the Bluetooth Special Interest Group, where most of the world important telecommunication, | Bluetooth is managed by the Bluetooth Special Interest Group, where most of the world important telecommunication, | ||
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+ | Bluetooth was initially developed as a replacement for cabled connection, mainly RS232 in 1994 by Ericsson in Lund, Sweden. For now, Bluetooth specification has several version, but all are designed to be backward compatible. Version 1.0 had many problems which were fixed with version 1.1 and 1.2. In 2004 version 2 was released where main difference compared with 1.2 was the enhanced data rate for faster communication. The nominal data rate was about 3 Mbit/s, but less in practice.In 2009 version 3 was introduced with theoretical 24 Mbit/s data transfer rate. The latest version is a Bluetooth Core Specification version 4.0, which includes classic Bluetooth, Bluetooth high speed and Bluetooth low energy protocols. Bluetooth high speed is based on WiFi, and classic Bluetooth consists of legacy Bluetooth protocols. | ||
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===== Practice ===== | ===== Practice ===== | ||
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Bluetooth Bee module fits into " | Bluetooth Bee module fits into " | ||