问题
Is it possible for the Bluetooth dual-mode device to be discoverable by classic bluetooth at the same time as being pairable with BT LE devices? It's ok if the device can not operate with both at the same time, but should I switch the chip between those modes really? I just can not find the answer in the BT 4 Core Specification
回答1:
Yes, A dual mode device can be discoverable by classic Bluetooth while being connected to a LE device. The device can also be connected to both classic and LE at the same time (device will time multiplex so as to maintain operations on both Classic and LE simultaneously)
来源：https://stackoverflow.com/questions/14321892/bluetooth-le-dual-mode