"bluetooth le device" is a long-range Bluetooth device; Bluetooth technology is an open global specification for wireless data and voice communications. It is based on low-cost short-range wireless connections to establish a communication environment for fixed and mobile devices. A special short-range wireless technology connection; when the low-power Bluetooth device is in the communication connection state, it has four working modes: activation mode, breathing mode, hold mode and sleep mode. Active mode is the normal working state.
The operating environment of this tutorial: Windows 10 system, DELL G3 computer.
bluetoothledevice is a remote Bluetooth device.
The first Bluetooth we call low-power Bluetooth is Bluetooth ble. Of course, the 4.0x version of Bluetooth is also backward compatible. Android phones must have system versions 4.03 and above to support BLEAPI. Low Compared with traditional Bluetooth, power consumption Bluetooth has the advantages of faster transmission speed, wider coverage, higher security, shorter delay, and lower consumption.
Characteristics of bluetoothledevice
The Bluetooth module is small in size and easy to integrate due to the relatively small size of personal mobile devices. Small, the volume of the Bluetooth chip embedded inside it should be smaller. When the low-power Bluetooth device is in the communication connection state, it has four working modes: activation mode, breathing mode, hold mode and sleep mode. Active mode is the normal working state.
The other three modes are low-power consumption modes specified for energy saving. They can transmit voice and data at the same time. Bluetooth uses circuit switching and packet switching technology to support asynchronous data channels, three voice channels, as well as asynchronous data and synchronous voice. For simultaneous transmission channels, Bluetooth operates in the 2:04 GHz ISM frequency band globally. The ISM frequency band in most countries around the world ranges from 2:04 to 2:4835GHz.
Expand knowledge
Bluetooth technology is an open global specification for wireless data and voice communications. It is based on low-cost, short-range wireless Connection, a special short-range wireless technology connection that establishes a communication environment for fixed and mobile devices.
Bluetooth enables some current portable mobile and computer devices to connect to the Internet without the need for cables and to provide wireless access to the Internet.
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