December 2025 monthly summary focusing on key accomplishments in the sdk-nrf repository. Focus on business value and technical achievements: The ADC test configuration for the nRF54LS05B was fixed to reflect the updated SAADC channel count (4 channels after MDK 8.73.0). This ensures accurate testing and reliable ADC driver functionality. The patch updates the tests in samples: zephyr: drivers: adc: fix test for nRF54LS05B, and includes commit a4367fdc0db21331df42b79fd16d5797b559f732. Result: improved test reliability, reduced CI noise, and better hardware variant support, enabling safer releases.

September 2025 (2025-09) monthly summary for nrfconnect/sdk-nrf focusing on features delivered, bugs fixed, and overall impact. The key integration work centers on Nordic BSP alignment and test hygiene improvements that reduce build-time and runtime issues while improving traceability for NRFX-related changes. Key deliverables: - MDK path alignment for Nordic BSP integration which aligns the MDK path to the BSP path, ensuring correct integration and functionality within the Nordic SDK. - Removal of PRS_BOX_1 to PRS_BOX_4 selections in Kconfig for nrfx integration tests to prevent compilation errors related to undefined NRFX_PRS_BOX_ADDR, stabilizing the test suite. - Quarantine mechanism for not-passing tests to improve tracking and prioritization of issues (NRFX-8421 reference). Impact: Reduced build and CI failures related to BSP/NRFX path resolution and test configuration, improved visibility of failing tests, and accelerated work on NRFX integration fixes. Technologies/skills demonstrated: Embedded SDK integration, C/C++ build/configuration management (MDK, BSP, Kconfig), test automation, and cross-repo collaboration for NRFX fixes.

August 2025 monthly summary for nrfconnect/sdk-nrf: Focused improvements to HPF Assembly Management developer experience across app and FLPR cores. Delivered two related changes: a bug fix to the HPF asm_check error messaging to clearly indicate the correct developer mode option based on the build target (cpuapp vs cpuflpr), and a documentation update clarifying that developer mode can be enabled via specific Kconfig options for each core. These changes reduce build-time confusion, accelerate onboarding, and improve cross-core configuration accuracy. Technical impact includes targeted updates to CMake-based messaging and Kconfig-driven workflows, complemented by updated developer docs to guide multi-core builds. Business value includes faster feature delivery cycles, reduced debugging time, and clearer guidance for developers across cores.

July 2025 monthly summary focused on expanding cross-platform testing for MSPI and improving test reliability in the NRF ecosystem, with emphasis on business value through faster feedback and more stable CI. Key features delivered: - MSPI API test portability across platforms (MSPI_PORT): Generalized MSPI API tests to support testing across different hardware platforms, consolidating two commits to broaden applicability of the MSPI driver API test. - In sdk-zephyr: f9ace89cf705f1dadf8ddcdb4a9cfc267e3d8078; df52ba87d8a9573114198a67379e742f98f01a3e - sdk-nrf enhancements for MSPI testing and quarantine status: - Updated Zephyr SDK revision to enable generic MSPI test drivers and remove quarantined test NRFX-7878 to allow regular testing. - Commits: df1207cf0914e30b88536f42d5dd7351ec240d0c; 47da03dc4ef9152b9ebc30437b431863924149da - HPF development and test reliability improvements: - Refactor HPF Kconfig for out-of-tree builds with VS Code; extend timeout for hpf_gpio_basic_api tests to improve reliability during coverage dumps. - Commits: 6bdb1b0e5b7635ff930a9ded695ce06bf07f0464; d6083cc052dd432938009bb3b12d864824c3c7c1 Major bugs fixed / stability improvements: - Removal of quarantined MSPI test NRFX-7878 to enable regular, continuous testing and reduce flaky test scenarios. - Increased timeouts for HPF GPIO tests to stabilize coverage dumps and prevent flaky results. Overall impact and accomplishments: - Improved cross-platform validation for MSPI drivers, enabling earlier detection of platform-specific issues and reducing integration risk. - Faster feedback loops and more reliable CI due to updated SDK tooling and removal of quarantined tests. - Strengthened test reliability for HPF workflows, supporting broader coverage without flakiness. Technologies/skills demonstrated: - Cross-platform test design and generalization (MSPI_PORT) across Zephyr and NRF ecosystems - Zephyr SDK integration and manifest management - Kconfig refactoring for out-of-tree builds and VS Code workflows - Test timing tuning and reliability engineering Business value: - Higher confidence in MSPI driver compatibility across multiple hardware platforms. - Accelerated validation cycles, reduced flaky test runs, and more stable CI for timely feature delivery.

April 2025: Delivered stability and standardization improvements in the nRF Connect SDK (nrfconnect/sdk-nrf). Key work includes a major refactor to standardize High-Performance Framework (HPF) terminology across the codebase, and a critical bug fix for external flash reset handling on the nRF54L15. The changes span the build system, drivers, DTS bindings, samples, tests, and documentation, with accompanying CI/build manifest updates to ensure consistent, maintainable deployments. These efforts reduce integration risk, accelerate onboarding, and improve downstream collaboration with the HPF ecosystem.

March 2025 milestones for nRF Connect SDK: Implemented robust SDP-related improvements with a focus on reliability, configurability, and developer workflow in the nrfconnect/sdk-nrf repository. Key work includes MSPI SDP driver enhancements with dynamic CNT0 calculation, DTS-based pin counting, and safer clock/pin handling, complemented by validations to prevent data-pin overlap and pin conflicts. Introduced SDP Developer Mode to streamline development builds via Kconfig/sysbuild integration and automatic inclusion of generated ASM files, plus cleanup of tests incompatible with the new build system. Enforced a single SDP image selection in Kconfig to prevent build conflicts and simplify releases. These changes reduce misconfiguration risk, improve hardware compatibility, and accelerate SDP development and validation workflows.

February 2025 monthly summary for nrfconnect/sdk-nrf: Delivered SPI performance improvements, corrected timing and configuration issues in SDP MSPI, and reorganized board-level configurations to improve maintainability and reliability on the nRF54L15 platform. The changes strengthen SPI throughput, reduce runtime overhead, and provide clearer, more maintainable hardware overlays.

January 2025 performance summary for repository nrfconnect/sdk-nrf. Focused on stabilizing and expanding MSPI-driven data pathways, enhancing cross-core data integrity, and enabling external storage options. Delivered reliability improvements, new reception capabilities, and safer data representations that collectively improve data throughput, system robustness, and testability while enabling external flash usage on supported hardware.

December 2024 monthly summary for NordicBuilder/sdk-nrf focused on a targeted ROM size threshold correction to stabilize memory budgeting for SDP GPIO ICBMSG across all platforms.

November 2024: NordicBuilder/sdk-nrf — delivered the foundational Serial Data Protocol (SDP) Multi-SPI (MSPI) driver initialization, enabling real-time SPI communication on Nordic platforms. Completed end-to-end build/configuration setup, board settings, and low-level hardware register access to support robust, interrupt-driven operation. Established support for single and quad SPI data transfers, providing a solid groundwork for SDP integration and performance-critical workloads.