Having multiple simultaneous Connections/links with Single Android App

[rishi]

Hi there,

I am using nrf52840, Softdevice S140,on our custom board. And my Android app is based on nrf android library(Andoid-BLE-Library)

Application is based on SDK17. Everything is working perfectly i mean firmware on the board and android app (can transfer data around 50KB/sec).

I started wondering if i can further increase the throughput by having the multiple links between my peripheral and android app.

I made the changes in firmware to support 2 links but on android side in my app when i try to connect second time it basically updates the existing connection. I can not establish second connection from the same android app. I am not sure this is even possible on android side?

To solve this issue i thought may be i can change my peripheral MAC  for the second link but somewhere on forum i saw this is probably not possible to run multiple gap services with different macs.

I just what to double check with experts, is this really possible what i am trying to achieve ? 

Thanks alot!

Rishi

[Simonr]

Hi Rishi

This should indeed be possible. I assume the reason you're not able to connect to two devices simultaneously is that you only have allowed the app to have one peripheral link at a time. Please check out the BleManager section in the Android BLE Library which should explain how you can manage multiple connections.

Best regards,

Simon