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

Allen23122452121 — Wed, 02 Apr 2025 12:06:36 GMT

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?

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

Kenneth — Wed, 02 Apr 2025 11:58:22 GMT

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