October 2025 monthly summary for nrfconnect/sdk-nrf: Focused on enhancing ESB timing reliability to improve wireless transmission stability. Delivered a targeted timer handling fix that prevents unintended COMPARE2 timer stops after the first CC2 match, enabling correct ramp-up behavior and consistent transmissions. This work reduces retransmissions and timing jitter, supporting more reliable production deployments.

Month: 2025-09 — Focused on stabilizing UART power management during interrupts for the nRF54 series. Delivered a targeted fix to ensure UART remains powered during ISR by using runtime PM (pm_device_runtime_get()), preventing suspend/resume in interrupt context. Applies to esb_prx and esb_ptx samples on the nRF54H20 SoC and the Radio Test and Direct Test Mode samples. This work reduces UART power-state fluctuations and improves reliability of serial communication in low-power scenarios across multiple samples.

Month 2025-08: Consolidated reliability improvements and hardware expansion in sdk-nrf. Key outcomes include: 1) Fixed a stack overflow when running ML configurations on nRF54L15 by increasing the main stack size (commit b4058d7d06620b71fff81757ecf8eb119716bc45). 2) Added support for nRF54LV10 hardware in Bluetooth samples (central_smp_client, multiple_adv_sets, peripheral_bms) by updating sample.yaml for tests and platform_allow (commit d326280f8722e3458ba3dcb0f6b1c091c9d8eca7). Business value: improved runtime stability for ML workloads and broadened hardware compatibility, enabling broader customer validation and faster go-to-market. Technologies: embedded C, stack/memory tuning, YAML-based configuration, hardware target management, Git traceability.

Month: 2025-07 – nrfconnect/sdk-nrf Concise monthly summary focusing on business value and technical achievements: Key features delivered: - Improve ESB radio disable reliability: refined esb_disable and esb_stop_rx to guarantee complete radio shutdown by clearing radio events and tasks, disabling shorts and interrupts, and ensuring the radio is disabled before proceeding. - nRF54LM20 hardware support for ESB sample: added build support for the nRF54LM20 device to the ESB sample, including new configuration files and updates to sample definitions to enable the nRF54LM20 target. - MLTPAN-39 hardware errata workaround for nRF54LM20A (radio_test and direct_test_mode samples): implemented workaround with necessary headers and clock/PLL adjustments to address the errata. Major bugs fixed: - Stabilized radio_test and direct_test_mode samples on nRF54LM20A by applying the MLTPAN-39 workaround, reducing test failures and non-deterministic behavior. - Overall improvement to ESB radio disable sequence reduces edge-case failures during shutdown. Overall impact and accomplishments: - Expanded hardware compatibility and reliability of the ESB samples, accelerating hardware evaluation and adoption for newer Nordic silicon. - Improved test stability and predictability, lowering field failure risk and enabling faster time-to-market for new targets. Technologies/skills demonstrated: - Embedded C, radio subsystem control, and hardware bring-up; build system and sample maintenance; hardware errata mitigation and device bring-up for new targets.

Month: 2025-06. Summary: Delivered two critical updates for nrfconnect/sdk-nrf. Key features delivered: Add nRF54LV10DK board support to the peripheral_power_profiling sample, including new configuration files and updates to enable NFC functionality and board-specific power management so the sample builds and runs on this hardware. Major bugs fixed: Remove obsolete NCSDK-33313 PSA crypto workaround for nRF54LV10A, eliminating a workaround that disabled Cracken and enabled Oberon cryptographic drivers for PSA crypto across Bluetooth sample configurations, as it's no longer necessary for this SoC. Overall impact: Strengthened hardware support and crypto reliability, enabling NFC-enabled power-profiling workflows on the new hardware and reducing maintenance burden. Technologies/skills demonstrated: Board support, sample configuration, NFC enablement, board-level power management, PSA crypto driver behavior, build/test readiness.

May 2025 monthly summary for nrfconnect/sdk-nrf focused on delivering robust feature work, hardware bring-up for new devices, and stability fixes across samples. Emphasis on business value through reliability, power efficiency, and broader platform support.

2025-04 monthly summary: Focused on stability improvements, standardized logging, and improved NFC reliability across key Nordic SDK components. Delivered targeted bug fixes and feature enhancements that reduce runtime risk, improve developer experience, and strengthen product reliability. Release notes and documentation updates accompany these changes, reinforcing traceability and maintainability.

2025-03 Monthly Summary for nrfconnect/sdk-nrf: Key features delivered: - Bluetooth stack robustness and configuration cleanup: improvements to advertising handling, reliability, and security; cleanup of stack-related configurations to avoid PSA crypto conflicts. Commits include: 3f782d2097241ff855fb445d5d6d5ce46fb0fc43, 52eeb6a4891bbe0f0e53556d3771fb9757dc2c61, 89c8da1d7ea2048e7c9802890a17b854d3fc055f, a52c6db9db7a30b2c74ce97a738db4bc4dff308e, 657691e2edf9118220ee67d01ce4a69695424370. - NFC Type 4 Tag support enhancement: increased T4T buffer size to support larger data operations. Commit: 5d31704051562b37c1c81d60cafdc71bb519a982. - NRF53 CPUNET enable for Distance Measurement RPC: enabling CONFIG_SOC_NRF53_CPUNET for NRF5340. Commit: b350baff43edf069a467aaf08300f029d194b9eb. Major bugs fixed: - System-wide stack size tuning for OBERON CTR DRBG driver: adjust Kconfig stack sizing to prevent potential stack overflows on devices using OBERON CTR DRBG driver. Commit: 35070368a66bcd2b743bc79349beed312259b864. - ESB protocol timer shorts fix when NEVER_DISABLE_TX is enabled: ensure timer shorts are configured correctly to prevent unintended TX disabling. Commit: 3a4215ba3ab29336c8065c5c97a45ec1d46336e9. - Quarantine entry for NCSDK-32042 sample: quarantine of sample.bluetooth.direction_finding_central_nrf on certain NRF platforms due to known issue NCSDK-32042. Commit: 4c8db122c9012e7bb2b3bf74b55e4d11f3d85ff9. Overall impact and accomplishments: - Improved reliability, security, and data handling across Bluetooth advertising, NFC data operations, and CPUNET-enabled RPC workflows. Stack and memory safety enhancements reduce risk of overflows and timing-related TX issues. Configuration cleanup simplifies maintenance and PSA crypto interactions. Enabled new capabilities (Distance Measurement RPC on NRF5340) and expanded peripheral data handling (NFC T4T). The quarantine entry reduces platform risk while known issues are mitigated. Technologies/skills demonstrated: - Bluetooth stack development: advertising logic refactor, resume advertising, increased stack size, LE secure connection pairing alignment, and simplification of main stack configuration. - NFC T4T data handling: buffer size tuning for larger operations. - System and memory engineering: Kconfig stack sizing adjustments for CTR_DRBG. - CPUNET-based RPC enablement for NRF5340. - ESB protocol configuration and reliability improvements. - Issue management and risk mitigation: quarantine entry for known sample issue.

February 2025: In the nrfconnect/sdk-nrf repo, delivered core stability and reliability improvements focused on NFC, ESB radio operation, and Bluetooth sample robustness. Implemented NFC clock handling on the nRF54H20 to ensure stable NFC signaling under field detection/loss, fixed data corruption in 4Mbit ESB samples by correcting clock initialization, and increased main stack sizes for Bluetooth samples to prevent stack overflow during settings loading. These changes reduce field defects, improve data integrity, and enhance platform resilience across target boards.

January 2025 monthly summary for nrfconnect/sdk-nrf focusing on delivering reliability improvements and robust BLE capabilities. Key work included a critical bug fix for ESB radio mode switching in fast_switching mode and a feature enhancement for the Central UART sample to reconnect to bonded devices by address. These changes were implemented with targeted commits and deliver measurable business value in reliability, predictability, and developer efficiency.

Month 2024-12: Expanded hardware coverage and storage reliability for Nordic SDK. Implemented new nRF54H20 target support in peripheral_power_profiling, migrated critical components to Zephyr Memory Storage (ZMS) for nRF54H20 across ML app, Bluetooth samples, and IPC Radio, and added ML app support for the nRF54L15DK board. Resolved ESB timer reliability issues on the nRF54 series and documented NCSDK-30802 with a workaround. These efforts improve hardware compatibility, memory/storage reliability, and overall system stability, enabling faster releases and broader IoT deployments.

Monthly summary for 2024-11 for repository NordicBuilder/sdk-nrf focusing on power efficiency, broader hardware support, and reliability improvements. Delivered runtime power management enhancements for the peripheral_power_profiling sample, including cleanup of periphery configuration and DK toggles, and added a Kconfig option to disable LEDs. Extended Edge Impulse data forwarder and wrapper with support for the nRF54H20DK board. Implemented dynamic interrupts improvements and expanded test configurations in the ESB sample. Corrected timing for the radio_test sample in 4 Mbit mode to ensure accurate byte-duration calculations. Optimized power consumption for the NFC system_off sample by disabling RAM retention and enabling PM_DEVICE_RUNTIME, with new board config files for nrf54l15dk.

October 2024 performance summary for NordicBuilder/sdk-nrf. Focused on hardware integration of the nRF54L15 Development Kit (DK) into the ML application, including new configuration artifacts, documentation updates, and enabling simulated sensor data to accelerate ML development on this DK.