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en:examples:communication:bluetooth [2012/05/10 15:41] raivo.sellen: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 =====
  
-[{{  ::examples:communication:bt.jpg?220|BT module.}}]+[{{  :examples:communication:bluetoothlogo.png?250|Bluetooth logo}}]
  
 Bluetooth is a proprietary open industry standard for wireless communication between devices over a short distance. Bluetooth communication uses short-wave radio transmissions, typically  2400–2480 MHz frequency. With a Bluetooth protocol a secure personal area networks (PAN) can be created between fixed and mobile devices. Bluetooth is a proprietary open industry standard for wireless communication between devices over a short distance. Bluetooth communication uses short-wave radio transmissions, typically  2400–2480 MHz frequency. With a Bluetooth protocol a secure personal area networks (PAN) can be created between fixed and mobile devices.
 Bluetooth is managed by the Bluetooth Special Interest Group, where most of the world important telecommunication, computing, network and electronic companies having a membership. The organization manages the specification, discusses and confirms new developments and holds trademark. If new development wants to mark its device as a Bluetooth device, it must be qualified according to the standard issued by Bluetooth Special Interest Group and get the licence from the organization. Bluetooth is managed by the Bluetooth Special Interest Group, where most of the world important telecommunication, computing, network and electronic companies having a membership. The organization manages the specification, discusses and confirms new developments and holds trademark. If new development wants to mark its device as a Bluetooth device, it must be qualified according to the standard issued by Bluetooth Special Interest Group and get the licence from the organization.
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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 =====
  
 +[{{  ::examples:communication:bt.jpg?220|BT module.}}]
 Bluetooth Bee module fits into "XBee" slot on Communication board and on Combo board. As with the ZigBee also Bluetooth Bee uses for communicating with controller controller's USART interface. By default when module is powered up it goes to command mode. Bluetooth Bee module fits into "XBee" slot on Communication board and on Combo board. As with the ZigBee also Bluetooth Bee uses for communicating with controller controller's USART interface. By default when module is powered up it goes to command mode.
  
en/examples/communication/bluetooth.1336664498.txt.gz · Last modified: 2020/07/20 09:00 (external edit)
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