March 2025 monthly summary for NordicBuilder/sdk-nrf: Delivered Bluetooth Channel Sounding Antenna Path Enhancements by leveraging Zephyr's built-in API to compute per-antenna-path distances and print results. Refactored antenna path retrieval to use bt_le_cs_get_antenna_path(), removing custom get_antenna_path logic and lookup tables to improve maintainability and alignment with Zephyr APIs. The work provides clearer traceability and a foundation for scaling channel sounding measurements across more antenna paths.

December 2024: Delivered configurable Bluetooth Channel Sounding (CS) support in Nordic nRF controller stack (NordicBuilder/sdk-nrf). Implemented Kconfig options to enable optional CS capabilities, including step mode-3 and adjustable antenna counts, and integrated CS configuration into the controller's memory usage setup. This enables flexible RF measurement features while preserving memory footprint, improving Bluetooth diagnostics and performance potential for customers.

November 2024 focused on a Bluetooth API cleanup in the Zephyr Bluetooth host library. Deprecated the non-functional bt_le_set_auto_conn API due to lack of test coverage and no sample usage. Recommends reimplementing reconnection semantics by handling reconnects in bt_conn_cb.disconnected. The change reduces maintenance burden, clarifies the API surface, and improves reliability for Bluetooth connections in the Zephyr stack.