21dual Mode.md

蓝牙 dual Mode

dual mode , single-mode

dual mode分为三种

• BR/EDR devices 经典蓝牙数据: Basic Rate/Enhanced Data
• LE only devices or sigle mode le devices // 只有Ble 模式
• BR/EDR/LE or dual mode devices //传统蓝牙和Ble

1.     BR/EDR to BR/EDR—Classic Bluetooth communications between:
a.     Mobile phone to headset. //打电话
b.     Laptop to laptop. // 电脑之间数据传输
c.     PC to printer.  // 蓝牙打印
2.     Single Mode LE to Single Mode LE—Low energy ecosystem
a.     Sports sensor displaying data on a watch.
3.     Single Mode LE to Dual Mode
a.     A laptop sending an alert to a key fob.
b.     A heart rate monitor sending data to the hospital’s computer using
smartphone as the gateway.