How to select a secondary adapter?

[evilsocket]

Hi, I've tried to look into the code and the other open issues but I couldn't find a solution to this. Some machines might have multiple bluetooth adapters, however every example only uses bluetooth.DefaultAdapter.

I could not find a way to select another adapter in the system.

[larkwiot]

Can you create an Adapter struct with the id field set to the device you want?

[evilsocket]

Not on macOS https://github.com/tinygo-org/bluetooth/blob/release/adapter_darwin.go#L12

[deadprogram]

This #303 added ability to choose adapter on Linux.

Still no way to do this on any other platforms.

[hu13]

@evilsocket i don't have a mac device that has multiple ble adapters. do you know a way to test #348 to see if it fixes your issue?

[hu13]

sorry i got a head of myself. the macOS core/bluetooth api does not seem to support connecting to a specific bluetooth adapter by its macAddress.

[evilsocket]

understood, i guess it makes sense since you can't use external adapters on macOS

[deadprogram]

#303 allows this for Linux. However macOS is very restrictive.

Seems like the question has been answered. Can this issue be closed now?

[ansoni-san]

understood, i guess it makes sense since you can't use external adapters on macOS

You can use external
adapters on macOS (the OS itself will switch which one is the main one). It just requires plugging the adapter in and rebooting or logging in and logging out.

Although if you wanted to control which adapter is used directly and potentially allow yourself to use a different one than the current primary OS-selected adapter you would need to interact with the device at the HCI level and bypass CoreBluetooth, which might be outside the scope of this library (most projects I knew of that did this have since dropped that approach or are unmaintained).