Esp32-snippets: Cannot detect/scan classic bluetooth devices

[Lakoja]

I acquired an ESP32 recently (a ESP-WROOM32-Breakout).
And tried the ble_scan example with Arduino. This works ok: Upload works. Some BT devices are listed as found.

However the devices listed there are only "low energy" ones.

This is true even if I define _CLASSIC_BT_ENABLED_. And as another test I even set the _ESP_BT_MODE_CLASSIC_BT_ for _esp_bt_controller_enable()_ in BLEDevice.cpp.

Parallely I checked this with an app on my Android phone ("BlueScan") which shows some more devices as type "Classic". All of which are not found by the ESP32.
(The one I am actually looking for also shows up as classic there...)

Does this sound like a hardware defect? Or are there any shortcomings in the libraries known?

[chegewara]

As you can see this is BLE library which means it only works with bluetooth LE. You cant work with bluetooth classic devices or use ESP32 as bluetooth classic device.

[Lakoja]

Is there a purpose for the _CLASSIC_BT_ENABLED_ flag from BLEDevice.cpp?

[chegewara]

No and yes. When memory release will be implemented eventualy it could crash user application if it will be dual mode app.

[Lakoja]

But the underlying sdk supports classic bluetooth? Because the ESP32 does according datasheets.

Thank you for your time and patience.

[chegewara]

Yes, esp32 and esp-idf sdk support classic bluetooth. Here you can find nice project:
https://github.com/MrBuddyCasino/ESP32_MP3_Decoder

[krisstakos]

Is it possible to detect/scan bluetooth classic devices somehow?

[redplane]

3 years later, and I have the same question

[chegewara]

This is BLE only library.