
Marek Pieta developed and maintained advanced embedded features for the nrfconnect/sdk-nrf repository, focusing on Bluetooth Low Energy HID device support, power management, and system reliability. He engineered robust HID input and state management, optimized memory usage, and improved device interoperability through modular C and Python code. Marek enhanced OTA DFU performance, streamlined build systems with CMake and Kconfig, and delivered detailed documentation to accelerate developer onboarding. His work addressed real-world production needs by reducing runtime errors, improving diagnostics, and enabling flexible configuration. The depth of his contributions reflects strong embedded systems expertise and a commitment to maintainable, production-ready firmware solutions.
April 2026: Key architectural guidance, boot reliability, and configuration-management improvements delivered across Zephyr and NRF stacks. Demonstrated cross-repo collaboration and system-level thinking to reduce customer risk and accelerate adoption of modern memory layouts.
April 2026: Key architectural guidance, boot reliability, and configuration-management improvements delivered across Zephyr and NRF stacks. Demonstrated cross-repo collaboration and system-level thinking to reduce customer risk and accelerate adoption of modern memory layouts.
March 2026 focused on performance, reliability, and hardware support across nrfconnect SDKs. Key work centered on memory-conscious HID peripheral implementations, enhanced HID testing in CI, and safer upgrade paths for key material, with broader hardware support and clearer configuration.
March 2026 focused on performance, reliability, and hardware support across nrfconnect SDKs. Key work centered on memory-conscious HID peripheral implementations, enhanced HID testing in CI, and safer upgrade paths for key material, with broader hardware support and clearer configuration.
January 2026 (2026-01) focused on improving runtime observability, reliability, and release efficiency for the nRF Desktop ecosystem. Key features delivered include enhanced logging and diagnostics with app-specific UART logger configurations and multi-backend support, and documentation improvements to simplify builds, debugging, and navigation. Major bugs fixed include enabling error logging in the USB legacy stack to improve runtime issue visibility. The month also included build and release workflow and ownership updates to better align responsibilities and streamline image generation, reducing reliance on external tooling. The combined efforts delivered measurable business value: faster issue diagnosis, reduced onboarding time, and more deterministic release processes.
January 2026 (2026-01) focused on improving runtime observability, reliability, and release efficiency for the nRF Desktop ecosystem. Key features delivered include enhanced logging and diagnostics with app-specific UART logger configurations and multi-backend support, and documentation improvements to simplify builds, debugging, and navigation. Major bugs fixed include enabling error logging in the USB legacy stack to improve runtime issue visibility. The month also included build and release workflow and ownership updates to better align responsibilities and streamline image generation, reducing reliance on external tooling. The combined efforts delivered measurable business value: faster issue diagnosis, reduced onboarding time, and more deterministic release processes.
December 2025 milestone for nrfconnect/sdk-nrf: delivered OTA DFU performance enhancements and Bluetooth security hardening, plus documentation and maintenance improvements. Achievements reduce build/config drift, strengthen data confidentiality, and streamline governance, delivering tangible business value through faster OTA updates, safer devices, and improved maintainability.
December 2025 milestone for nrfconnect/sdk-nrf: delivered OTA DFU performance enhancements and Bluetooth security hardening, plus documentation and maintenance improvements. Achievements reduce build/config drift, strengthen data confidentiality, and streamline governance, delivering tangible business value through faster OTA updates, safer devices, and improved maintainability.
November 2025 monthly summary for nrfconnect/sdk-nrf focused on delivering tangible business value through performance, memory footprint, and reliability improvements across the nRF Desktop stack. Key work included system performance enhancements enabling faster, more deterministic MPSL scheduling; reduced memory usage through LED driver and HID subsystem optimizations; and expanded Bluetooth configuration flexibility to better support varied devices and use cases. The work also strengthened stability and maintainability through validation, assertions, and provider/initialization hardening, setting a foundation for more predictable deployments and easier debugging.
November 2025 monthly summary for nrfconnect/sdk-nrf focused on delivering tangible business value through performance, memory footprint, and reliability improvements across the nRF Desktop stack. Key work included system performance enhancements enabling faster, more deterministic MPSL scheduling; reduced memory usage through LED driver and HID subsystem optimizations; and expanded Bluetooth configuration flexibility to better support varied devices and use cases. The work also strengthened stability and maintainability through validation, assertions, and provider/initialization hardening, setting a foundation for more predictable deployments and easier debugging.
Month 2025-10 achieveable: Reverted experimental Bluetooth host stack changes to restore stable buffer lifecycle and ATT callback behavior, delivering reliability across the Bluetooth stack. Implemented HID input processing performance improvements and expanded project documentation across HID and nrf_desktop modules. Documented a known issue related to HID over BLE buffer leaks with guidance to mitigate. These efforts improve product reliability, responsiveness, and developer onboarding while maintaining code quality and traceability.
Month 2025-10 achieveable: Reverted experimental Bluetooth host stack changes to restore stable buffer lifecycle and ATT callback behavior, delivering reliability across the Bluetooth stack. Implemented HID input processing performance improvements and expanded project documentation across HID and nrf_desktop modules. Documented a known issue related to HID over BLE buffer leaks with guidance to mitigate. These efforts improve product reliability, responsiveness, and developer onboarding while maintaining code quality and traceability.
September 2025 brought production readiness improvements and documentation refreshes across Bluetooth, nRF Desktop, profiling tooling, and backend cleanup. The team stabilized core features, fixed UX issues, and reduced risk in CI pipelines, delivering tangible business value through more reliable hardware interactions, clearer developer guidance, and a leaner codebase.
September 2025 brought production readiness improvements and documentation refreshes across Bluetooth, nRF Desktop, profiling tooling, and backend cleanup. The team stabilized core features, fixed UX issues, and reduced risk in CI pipelines, delivering tangible business value through more reliable hardware interactions, clearer developer guidance, and a leaner codebase.
July 2025 monthly summary for nrfconnect/sdk-nrf focused on expanding HID capabilities, strengthening reliability, and improving responsiveness. Delivered new HID report providers, hardened HID subscription handling, and refined event processing, enabling richer device interoperability and a smoother developer/user experience. Emphasis on business value: broader HID support, reduced incident surface through robust subscription logic, and improved reconnection handling and observability.
July 2025 monthly summary for nrfconnect/sdk-nrf focused on expanding HID capabilities, strengthening reliability, and improving responsiveness. Delivered new HID report providers, hardened HID subscription handling, and refined event processing, enabling richer device interoperability and a smoother developer/user experience. Emphasis on business value: broader HID support, reduced incident surface through robust subscription logic, and improved reconnection handling and observability.
June 2025 monthly summary for nrfconnect/sdk-nrf: Delivered comprehensive HID State and Input Reporting enhancements for NRF Desktop, integrating HID event queue, key/state management, report handling, and a new HID keymap utility plus a keyboard report provider. Implemented a configuration option to limit HID input reports to control report traffic. Fixed critical robustness issues and improved developer experience through documentation and build-system cleanups.
June 2025 monthly summary for nrfconnect/sdk-nrf: Delivered comprehensive HID State and Input Reporting enhancements for NRF Desktop, integrating HID event queue, key/state management, report handling, and a new HID keymap utility plus a keyboard report provider. Implemented a configuration option to limit HID input reports to control report traffic. Fixed critical robustness issues and improved developer experience through documentation and build-system cleanups.
May 2025 monthly summary for nrfconnect/sdk-nrf. This period delivered four key outcomes: 1) HID access via updated udev rules; 2) HID Configurator robustness; 3) Memory optimization for GATT Discovery Manager; 4) Documentation improvements. Benefits include enabling non-root access and broader Bluetooth LE device compatibility; reliable multi-device HID discovery; reduced RAM footprint on memory-constrained dongles; and clearer SUIT/ Kconfig/ Fast Pair documentation. Technologies demonstrated include udev rules, HID stack, MCUboot, LTO, and system workqueue reuse. Impact: faster onboarding, fewer support escalations, and improved device support in production deployments.
May 2025 monthly summary for nrfconnect/sdk-nrf. This period delivered four key outcomes: 1) HID access via updated udev rules; 2) HID Configurator robustness; 3) Memory optimization for GATT Discovery Manager; 4) Documentation improvements. Benefits include enabling non-root access and broader Bluetooth LE device compatibility; reliable multi-device HID discovery; reduced RAM footprint on memory-constrained dongles; and clearer SUIT/ Kconfig/ Fast Pair documentation. Technologies demonstrated include udev rules, HID stack, MCUboot, LTO, and system workqueue reuse. Impact: faster onboarding, fewer support escalations, and improved device support in production deployments.
Month: 2025-04. This period focused on stabilizing the Nordic Desktop stack on nRF platforms, delivering key features for USB HID reliability, and hardening Bluetooth connectivity, while improving code quality through const-correctness and enhanced power management documentation. The work also addressed boot/logging stability to ensure smoother builds and deployments.
Month: 2025-04. This period focused on stabilizing the Nordic Desktop stack on nRF platforms, delivering key features for USB HID reliability, and hardening Bluetooth connectivity, while improving code quality through const-correctness and enhanced power management documentation. The work also addressed boot/logging stability to ensure smoother builds and deployments.
Monthly summary for 2025-03 — NordicBuilder/sdk-nrf: Delivered a targeted set of features and reliability improvements across the nRF Desktop integration, with a focus on power efficiency, memory footprint, and hardware consistency. Key outcomes include adopting PicoLibc as the default C library, power management and USB stability enhancements, removal of legacy hardware support, and configuration cleanup that simplifies maintenance and release readiness. These changes drive more predictable builds, improved DFU reliability over BLE, and clearer platform configurations across DKs and desktop applications.
Monthly summary for 2025-03 — NordicBuilder/sdk-nrf: Delivered a targeted set of features and reliability improvements across the nRF Desktop integration, with a focus on power efficiency, memory footprint, and hardware consistency. Key outcomes include adopting PicoLibc as the default C library, power management and USB stability enhancements, removal of legacy hardware support, and configuration cleanup that simplifies maintenance and release readiness. These changes drive more predictable builds, improved DFU reliability over BLE, and clearer platform configurations across DKs and desktop applications.
February 2025 performance summary for NordicBuilder/sdk-nrf focusing on business value, reliability, and engineering execution. The month delivered a set of high-impact features, critical stability fixes, and platform optimizations across Edge Impulse integration, power management, release readiness, profiling, and quarantine hygiene. Key features delivered: - Edge Impulse: suppress build warnings, fix wrapper build warning, and adjust tests to use float constants to ensure consistent builds and test results. - CAF power management: introduce power_off event, improve shutdown flow, and use sys_poweroff API on nRF54H20 for reliable power-down behavior. - nRF Desktop release readiness: add dongle_small config for nRF52833 DK, enable LTO, enable LTO for sysbuild images, include a release note for LTO, fix MCUboot DFU image path, and adopt Fast Pair PSA crypto on nRF54L to strengthen crypto trust in provisioning flows. - Quarantine work: add nrf52810dmouse release from nRF Desktop and update quarantine integration; remove obsolete targets related to NCSDK-31675 to avoid stale references. - Platform optimizations: nRF Desktop platform optimizations for nRF52810/52820, including increased sys work queue and loader stack sizes to boost performance and stability. - nrf_profiler enhancements: improved stats calculation, interval plotting, test presets, and larger plots; updated logger names and related scripts for clearer diagnostics; fixed profiling for hid_report_subscriber_event. - Maintenance fixes: Kconfig warning fix for SW Split LL; removal of MPSL flash sync timeout workaround in nrf_desktop and Bluetooth fast_pair sample; and management of a revert for high Global Domain frequency on nRF54H20 when issues were observed. Major bugs fixed: - Quarantine cleanup: removal of NCSDK-31675-related targets to clean quarantine targets and avoid stale references. - Kconfig warning: resolved warning for SW Split LL to improve build cleanliness. - nRF54H20 frequency handling: reverted the high Global Domain frequency change due to observed issues, restoring stability. - Profiling: corrected hid_report_subscriber_event profiling to remove performance anomalies. - MPSL timeout workaround: dropped obsolete MPSL flash sync timeout workaround across nRF Desktop and fast_pair sample to align with updated MPSL behavior. Overall impact and accomplishments: - Strengthened release readiness with build-time optimizations and reliable DFU paths. - Improved device reliability and power efficiency via robust power-off handling. - Enhanced developer productivity through cleaner quarantine hygiene, better profiling visibility, and reduced build noise. - Demonstrated proficiency in embedded architectures, C/C++, build systems, security crypto integration, and performance instrumentation. Technologies/skills demonstrated: - Embedded C/C++, nRF SDK, and MCUs (nRF52810/52820/52833/54L/54H20) - Build optimizations (LTO), test adjustments, and DFU tooling (MCUboot) - Power management APIs (sys_poweroff), and Edge Impulse SDK integration - PSA Crypto usage for Fast Pair, firmware release engineering, and quarantine management - Profiling tooling and scripting enhancements for NordicProfiler - Quarantine management and clean-up practices
February 2025 performance summary for NordicBuilder/sdk-nrf focusing on business value, reliability, and engineering execution. The month delivered a set of high-impact features, critical stability fixes, and platform optimizations across Edge Impulse integration, power management, release readiness, profiling, and quarantine hygiene. Key features delivered: - Edge Impulse: suppress build warnings, fix wrapper build warning, and adjust tests to use float constants to ensure consistent builds and test results. - CAF power management: introduce power_off event, improve shutdown flow, and use sys_poweroff API on nRF54H20 for reliable power-down behavior. - nRF Desktop release readiness: add dongle_small config for nRF52833 DK, enable LTO, enable LTO for sysbuild images, include a release note for LTO, fix MCUboot DFU image path, and adopt Fast Pair PSA crypto on nRF54L to strengthen crypto trust in provisioning flows. - Quarantine work: add nrf52810dmouse release from nRF Desktop and update quarantine integration; remove obsolete targets related to NCSDK-31675 to avoid stale references. - Platform optimizations: nRF Desktop platform optimizations for nRF52810/52820, including increased sys work queue and loader stack sizes to boost performance and stability. - nrf_profiler enhancements: improved stats calculation, interval plotting, test presets, and larger plots; updated logger names and related scripts for clearer diagnostics; fixed profiling for hid_report_subscriber_event. - Maintenance fixes: Kconfig warning fix for SW Split LL; removal of MPSL flash sync timeout workaround in nrf_desktop and Bluetooth fast_pair sample; and management of a revert for high Global Domain frequency on nRF54H20 when issues were observed. Major bugs fixed: - Quarantine cleanup: removal of NCSDK-31675-related targets to clean quarantine targets and avoid stale references. - Kconfig warning: resolved warning for SW Split LL to improve build cleanliness. - nRF54H20 frequency handling: reverted the high Global Domain frequency change due to observed issues, restoring stability. - Profiling: corrected hid_report_subscriber_event profiling to remove performance anomalies. - MPSL timeout workaround: dropped obsolete MPSL flash sync timeout workaround across nRF Desktop and fast_pair sample to align with updated MPSL behavior. Overall impact and accomplishments: - Strengthened release readiness with build-time optimizations and reliable DFU paths. - Improved device reliability and power efficiency via robust power-off handling. - Enhanced developer productivity through cleaner quarantine hygiene, better profiling visibility, and reduced build noise. - Demonstrated proficiency in embedded architectures, C/C++, build systems, security crypto integration, and performance instrumentation. Technologies/skills demonstrated: - Embedded C/C++, nRF SDK, and MCUs (nRF52810/52820/52833/54L/54H20) - Build optimizations (LTO), test adjustments, and DFU tooling (MCUboot) - Power management APIs (sys_poweroff), and Edge Impulse SDK integration - PSA Crypto usage for Fast Pair, firmware release engineering, and quarantine management - Profiling tooling and scripting enhancements for NordicProfiler - Quarantine management and clean-up practices
January 2025: Delivered extended emulation support for NRF54L05 and NRF54L10 on the nRF54L15 DK in NordicBuilder/sdk-nrf. This release adds hardware configuration overlays, device-tree/src files, and multi-build-type configurations (release, keyboard, fast pair, general application), and expands provisioning tooling and integration test coverage. Documentation has been provided for these SoCs. No major bugs were reported this month; work focused on extending simulator/emulation capabilities, tooling, and tests to accelerate hardware qualification and time-to-market for NRF54L05/NRF54L10 based products.
January 2025: Delivered extended emulation support for NRF54L05 and NRF54L10 on the nRF54L15 DK in NordicBuilder/sdk-nrf. This release adds hardware configuration overlays, device-tree/src files, and multi-build-type configurations (release, keyboard, fast pair, general application), and expands provisioning tooling and integration test coverage. Documentation has been provided for these SoCs. No major bugs were reported this month; work focused on extending simulator/emulation capabilities, tooling, and tests to accelerate hardware qualification and time-to-market for NRF54L05/NRF54L10 based products.
December 2024 monthly summary for NordicBuilder/sdk-nrf. Delivered security-forward enhancements for nRF54L devices, expanded performance benchmarking, and modernized build and documentation to improve developer productivity and release readiness. The work emphasizes business value through stronger hardware-rooted security, broader SoC support in benchmarks, and streamlined build and docs for faster delivery.
December 2024 monthly summary for NordicBuilder/sdk-nrf. Delivered security-forward enhancements for nRF54L devices, expanded performance benchmarking, and modernized build and documentation to improve developer productivity and release readiness. The work emphasizes business value through stronger hardware-rooted security, broader SoC support in benchmarks, and streamlined build and docs for faster delivery.
November 2024 (2024-11) monthly summary for NordicBuilder/sdk-nrf. Focus was on advancing LLPM readiness, stabilizing BLE behavior, and strengthening secure boot paths across target devices. Delivered LLPM integration groundwork and deprecation of the HF clock lock, gating logic to prevent unsupported enables, and multiple BLE reliability improvements. Implemented LLPM gating for BLE controller and BabbleSim, improved BLE connection parameter handling and logging, and enhanced USB suspend behavior. Expanded MCUboot support on nRF54L DK with larger partition and hardware crypto. Updated documentation and known issues to reduce field triage. Addressed tooling hygiene with a script fix and minor reverts to maintain USB next compatibility. These changes collectively improve device reliability, performance, and upgrade security while enabling future LLPM-based optimizations.
November 2024 (2024-11) monthly summary for NordicBuilder/sdk-nrf. Focus was on advancing LLPM readiness, stabilizing BLE behavior, and strengthening secure boot paths across target devices. Delivered LLPM integration groundwork and deprecation of the HF clock lock, gating logic to prevent unsupported enables, and multiple BLE reliability improvements. Implemented LLPM gating for BLE controller and BabbleSim, improved BLE connection parameter handling and logging, and enhanced USB suspend behavior. Expanded MCUboot support on nRF54L DK with larger partition and hardware crypto. Updated documentation and known issues to reduce field triage. Addressed tooling hygiene with a script fix and minor reverts to maintain USB next compatibility. These changes collectively improve device reliability, performance, and upgrade security while enabling future LLPM-based optimizations.
Month: 2024-10 focused on improving HID subsystem usability and configurability in Nordic nRF desktop integration. Delivered comprehensive HID documentation updates and introduced a new Kconfig for HID forward subscriber count to support flexible HID forwarding when multiple BLE HID peripherals share a single USB HID instance. These changes reduce integration risk, improve developer onboarding, and enhance scalability in HID workflows.
Month: 2024-10 focused on improving HID subsystem usability and configurability in Nordic nRF desktop integration. Delivered comprehensive HID documentation updates and introduced a new Kconfig for HID forward subscriber count to support flexible HID forwarding when multiple BLE HID peripherals share a single USB HID instance. These changes reduce integration risk, improve developer onboarding, and enhance scalability in HID workflows.

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