Is there any difference between bluetooth.h and scan.h?

[Allen23122452121]

I use NCS2.5.0，and I noticed that there are two files(bluetooth.h and scan.h) can help to set  scan parameters.Is there any difference betwen these two files?Can I call the interfaces in scan.h while also calling the interfaces in bluetooth.h to configure scanning together?

Looking forward to your help.

[Kenneth]

The two files you're referring to represent different levels of abstraction for BLE scanning functionality:

- bluetooth.h (from Zephyr) provides the lower-level, core Bluetooth scanning functionality with functions like bt_le_scan_start() and macros like BT_LE_SCAN_ACTIVE.

- scan.h (from Nordic) is a higher-level abstraction built on top of the Zephyr Bluetooth API, providing simplified scanning functionality with functions like bt_scan_start() and bt_scan_init().

Regarding using both APIs together, you need to be careful. While technically possible, it's not recommended to mix them because: The Nordic scanning module registers its own callback with the Zephyr scanner, and calling bt_scan_init() multiple times can lead to improper operation due to multiple registrations of the same callback.

Kenneth

[Allen23122452121]

Thanks for your reply.

How do I configure the scan timeout callback when using bluetooth.h? I see that bt_le_scan_cb_register is provided in bluetooth.h. If I register multiple scan callbacks using bt_le_scan_cb_register, how can I execute a specific callback under different conditions?