
Sara Ghabeli contributed to the nrfconnect/sdk-nrf repository by developing and refining Bluetooth Direct Test Mode (DTM) features, implementing hardware errata workarounds, and modernizing test infrastructure for the nRF54 family. She delivered a DTM 2-wire to HCI conversion library in C, enabling streamlined controller testing and improved maintainability. Her work included updating Bluetooth maturity levels, consolidating errata handling using nrfx macros, and enhancing test sample reliability. By managing code ownership and documentation, Sara ensured traceability and maintainability. Her technical approach emphasized embedded systems expertise, firmware development, and configuration management, resulting in robust, testable solutions that reduced validation risk.
April 2026 monthly summary for repository nrfconnect/sdk-nrf: Delivered targeted DTM and Radio Test samples improvements with errata cleanup and modernization, plus consolidation of HMPAN-based DTM workarounds. These changes enhance compatibility with nrfx, improve maintainability, and increase test reliability across the nRF54 family, delivering tangible business value by reducing maintenance effort and ensuring accurate testing across devices.
April 2026 monthly summary for repository nrfconnect/sdk-nrf: Delivered targeted DTM and Radio Test samples improvements with errata cleanup and modernization, plus consolidation of HMPAN-based DTM workarounds. These changes enhance compatibility with nrfx, improve maintainability, and increase test reliability across the nRF54 family, delivering tangible business value by reducing maintenance effort and ensuring accurate testing across devices.
March 2026: Delivered DTM 2-wire to HCI conversion library for nrfconnect/sdk-nrf, enabling testers to drive controllers via Bluetooth HCI with simplified command/event handling. Documented the library and updated changelog; refactored samples to use the new 2-wire types header for maintainability. Established code ownership for the dtm_twowire libraries to improve accountability and maintenance. No major bugs fixed this month; the emphasis was on feature delivery, documentation, and governance to accelerate testing and validation workflows.
March 2026: Delivered DTM 2-wire to HCI conversion library for nrfconnect/sdk-nrf, enabling testers to drive controllers via Bluetooth HCI with simplified command/event handling. Documented the library and updated changelog; refactored samples to use the new 2-wire types header for maintainability. Established code ownership for the dtm_twowire libraries to improve accountability and maintenance. No major bugs fixed this month; the emphasis was on feature delivery, documentation, and governance to accelerate testing and validation workflows.
February 2026 monthly summary for nrfconnect/sdk-nrf: Delivered a critical hardware errata workaround enabling reliable 2M PHY transmission on the nRF54LS05. Implemented Errata 20 workaround within DTM and radio test samples and ensured alignment with existing errata handling across the stack. This fix reduces field failure risk, enhances device reliability in high-rate transmissions, and supports ongoing product certifications. Demonstrated strong embedded C proficiency, radio protocol understanding, and test-driven development by extending test coverage and ensuring traceability in the associated commit.
February 2026 monthly summary for nrfconnect/sdk-nrf: Delivered a critical hardware errata workaround enabling reliable 2M PHY transmission on the nRF54LS05. Implemented Errata 20 workaround within DTM and radio test samples and ensured alignment with existing errata handling across the stack. This fix reduces field failure risk, enhances device reliability in high-rate transmissions, and supports ongoing product certifications. Demonstrated strong embedded C proficiency, radio protocol understanding, and test-driven development by extending test coverage and ensuring traceability in the associated commit.
January 2026 deliverables focused on stabilizing Bluetooth features, enabling Direct Test Mode testing, and aligning MPSL/SoftDevice Controller changes across the SDKs to improve product readiness and testing coverage. The work emphasizes business value through conformance readiness, reduced validation risk, and cross-repo consistency that accelerates hardware verification and customer adoption.
January 2026 deliverables focused on stabilizing Bluetooth features, enabling Direct Test Mode testing, and aligning MPSL/SoftDevice Controller changes across the SDKs to improve product readiness and testing coverage. The work emphasizes business value through conformance readiness, reduced validation risk, and cross-repo consistency that accelerates hardware verification and customer adoption.

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