如何获得配对的BLE设备？

Question

Description - How I can get the number of BLE connection in iOS. I want to restrict a user to add more BLE sensor after a particular number of BLE connection. I want to get the number of a BLE connection a device can handle.

Answer 1

A connection represents state, not traffic. The count of connections will be bound by either memory or the data structures used by the Bluetooth stack to manage them, both unknown. My answer is, "As many as it can and no more."

Packets represent traffic and each is handled one at a time. From this perspective, my answer is, "One."

However, if a packet cannot be processed out of the critical paths in the chip and protocol stack fast enough to begin processing the next packet, packets can be dropped. Experience has shown these critical paths in iOS are dependent on the traffic's packet size and rate. Additionally, other devices in the area not connected to your BLE stack may be flooding the radio spectrum and causing packet collisions outside the stack. I have seen BLE traffic go to hell with an excess of 20 connections and as few as one. From this perspective my answer is, "It depends."