During March 2026, the team delivered significant Bluetooth stack enhancements in the nxp-upstream/zephyr repo, focused on device discovery, RFCOMM server lifecycle management, and code maintainability. Major outcomes include Extended Inquiry Response (EIR) support for BR/EDR and a new shell command to set EIR names, RFCOMM server management enhancements with an unregister interface and improved server list handling via sys_slist_t, and a refactor of Bluetooth data structures into a dedicated header to resolve dependencies and improve build modularity. These changes collectively improve device discovery richness, ease server lifecycle operations, and position the codebase for scalable future work. Top 3-5 achievements: - Implemented Bluetooth Classic EIR support and added bt_br_write_eir() API plus a shell command to set EIR name for BR/EDR devices. - Added dynamic RFCOMM server unregister capability and migrated RFCOMM server lists to sys_slist_t for reliable lifecycle management. - Refactored Bluetooth data structures into a separate header (data.h) to improve code organization and resolve header dependency issues.

February 2026 performance summary for nxp-upstream/zephyr: Focused on strengthening test infrastructure for Bluetooth UUID handling and stabilizing unit tests. Delivered a targeted testing feature, wired necessary dependencies, and resolved build/link issues to enable reliable test execution. The work reduces debugging time, increases test coverage, and improves confidence in Bluetooth UUID parsing within the host stack.

Month: 2025-11 — Delivered cross-repo Bluetooth host stack improvements focused on readability, consistency, and reliability across nrfconnect/sdk-zephyr and nxp-upstream/zephyr. The work emphasizes business value by reducing maintenance cost, lowering risk, and accelerating future feature work.

Month: 2025-10 | Repository: zephyrproject-rtos/zephyr. This month focuses on delivering Bluetooth Classic power management features and improving connection handling, with emphasis on business value through energy efficiency, robustness, and testability. Key features and bug fixes were implemented with a clear API surface, callbacks, and shell tooling to streamline validation and power management.

Monthly summary for 2025-09 focused on delivering a new BR/EDR Link Supervision Timeout API for the Zephyr Bluetooth stack in nxp-upstream/zephyr. The feature enables configurable supervision timeouts for BR/EDR connections by introducing APIs to set and read the timeout via HCI commands, improving connection reliability and functionality in environments with variable link quality.

July 2025 monthly summary focusing on key accomplishments for AmbiqMicro/ambiqzephyr and zephyrproject-rtos/zephyr-testing. Highlights include robustness fixes to Bluetooth SDP, L2CAP BR/EDR unregister lifecycle management, and PNP product ID tooling for SDP parsing, improving reliability, resource management, and developer workflows in Bluetooth-enabled devices.