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Michał Grochala

PROFILE

Michał Grochala

Over 15 months, contributed to nrfconnect/sdk-nrf and related Nordic repositories by developing and maintaining embedded firmware features, hardware support, and documentation for Bluetooth, NFC, and RF test workflows. Leveraged C, Device Tree, and YAML to automate configuration, align with evolving SoC platforms, and implement hardware errata workarounds, reducing manual steps and misconfigurations. Enhanced onboarding and test reliability by expanding sample coverage to new chipsets, clarifying API documentation, and improving code ownership governance. Addressed bugs in Bluetooth and machine learning applications, stabilized RF testing, and maintained compatibility with upstream SDKs, demonstrating depth in embedded systems, configuration management, and technical writing.

Overall Statistics

Feature vs Bugs

59%Features

Repository Contributions

47Total
Bugs
14
Commits
47
Features
20
Lines of code
1,632
Activity Months15

Work History

March 2026

4 Commits • 1 Features

Mar 1, 2026

March 2026 delivered targeted improvements across documentation hygiene, hardware support, and ownership governance. The work enhances reliability, accelerates onboarding, and improves maintenance workflows by clarifying known issues, expanding hardware compatibility, and aligning ownership for SMP samples.

February 2026

5 Commits • 2 Features

Feb 1, 2026

February 2026 monthly summary focusing on key accomplishments, delivering business value through documentation governance, stability improvements to ML workloads, and clarified ownership across two core SDK repositories. The work demonstrates strong documentation discipline, memory management for embedded ML workloads, and governance improvements to streamline reviews and reduce maintenance overhead.

December 2025

4 Commits • 1 Features

Dec 1, 2025

December 2025: Delivered automated NRF54L configuration derivation from DTS and SoC selection, eliminating manual DTS/Kconfig steps, and implemented NRF54L compatibility fixes across sdk-zephyr/sdk-nrf to improve hardware support and configuration accuracy. These changes reduce manual work, lower risk of misconfigurations, and accelerate onboarding for Nordic platforms.

November 2025

1 Commits • 1 Features

Nov 1, 2025

Month: 2025-11 — Repos: nrfconnect/sdk-nrfxlib. Key work: NFC Platform API Compatibility Update for nrfx API v4.0.0. This period delivered an API compatibility update aligning the NFC platform with nrfx API v4.0.0, enabling improved NFC tag support and forward-compatibility for future features. Work included updating the platform API surface, ensuring compatibility, and documenting changes in the changelog. Commit 9b969cc34b07d44c8b3ad5bb6fa5cab6646e7ed1 contains the changes and includes a Signed-off-by: Michał Grochala. No major bugs reported this month in this repository. Impact: reduces integration risk, simplifies onboarding for NFC tag support, and establishes foundation for NFC enhancements. Technologies/skills: embedded C, Nordic SDK (nrfx), API compatibility, version control, changelog maintenance.

October 2025

1 Commits

Oct 1, 2025

In Oct 2025, worked on governance and maintenance tasks in the nrfconnect/sdk-nrf repository, focusing on accurate ownership and accountability for Bluetooth and peripheral test samples. Updated CODEOWNERS to reflect current ownership for the Direct Test Mode and Radio Test samples and their documentation. Implemented via commit 3e9c6405953dfe22e63a73f9cb2aab453b386a01. This work improves triage efficiency, ownership clarity, and auditability, with no user-facing feature releases this month.

September 2025

3 Commits

Sep 1, 2025

September 2025 monthly summary for nrfconnect/sdk-nrf: Delivered essential hardware compatibility cleanup across DTM and Radio Test samples; temporarily dropped Thingy53 board support due to build issues after Zephyr USB stack changes; and fixed LLVM type incompatibility in the LE OOB record encoder by adding an explicit cast for the LE Role enum. These changes improved build stability, cross-hardware compatibility, and data handling in LE workflows, with traceable commits.

August 2025

3 Commits • 3 Features

Aug 1, 2025

Month: 2025-08 — Focused on documentation clarity, hardware support expansion, and NFC capability communication for the nrfconnect/sdk-nrf repository. Delivered three features with traceable commits, enabling faster testing, broader hardware support, and reduced ambiguity for NFC protocols. Key deliverables: - Bluetooth DTM TX power range documentation clarified (VS command range: -48 dBm to 15 dBm), improving test consistency and vendor integration. (Commit: 92a30ee41179add06003d7f3679b4b34b824744b) - Add nRF54LV10 SoC support to peripheral_mds Bluetooth sample, including YAML platform_allow/platform_deny updates and memfault-firmware-sdk bump to 1.28.0 in west.yml, expanding hardware coverage. (Commit: f43fe358f7ef5dde85dc2c735b35283e88a81d0d) - NFC software maturity documentation updated for nRF54L05/L10 to reflect Type 2 and Type 4 tag support and related protocols, reducing planning ambiguity. (Commit: 1c14b16e4ab4eeb2ffeb03f017e57eb4fa3190a8)

July 2025

3 Commits • 1 Features

Jul 1, 2025

July 2025 monthly summary: Delivered critical Bluetooth samples enablement for the nRF54LV10 SoC, enabling build/test on new hardware via Twister; fixed documentation path for the peripheral_status sample to prevent user confusion; resolved an assertion in DTM (FEM) TX power handling and updated the TX power documentation. These changes improve hardware onboarding, reduce support friction, and strengthen testing workflows. Demonstrated competencies include embedded Bluetooth sample development, multi-SOC hardware support, testing automation with Twister, and clear technical documentation.

June 2025

2 Commits

Jun 1, 2025

June 2025 monthly summary for nrfconnect/sdk-nrf: Focused on stabilizing RF testing workflows by addressing Errata 216 in the nRF54H20 Direct Test Mode (DTM) sample. Implemented a fix that corrects RX/TX handling and signaling of errata 216 during radio operations, accompanied by documentation updates and a changelog entry. The changes reduce intermittent test failures and enhance the reliability of RF tests, contributing to more predictable test results and smoother certification readiness.

May 2025

3 Commits • 3 Features

May 1, 2025

May 2025 monthly summary for nrfconnect/sdk-nrf focusing on feature delivery, reliability improvements, and developer productivity. Key work targeted NFC stack security/build flexibility and ESB protocol alignment, with an emphasis on clear API documentation.

April 2025

2 Commits • 1 Features

Apr 1, 2025

April 2025 — Hardware errata HMPAN-216 workaround implemented to stabilize Bluetooth DTM in sdk-nrf. Added a startup timing control mechanism for the radio (SysCtrl via mailbox and timer) to prevent premature DTM start, improving test reliability and hardware compatibility. The work is reflected in the DTM sample with accompanying documentation and changelog updates to capture the errata remediation.

March 2025

4 Commits • 1 Features

Mar 1, 2025

March 2025: Expanded hardware support and strengthened test robustness in the nrfconnect/sdk-nrf project to accelerate customer integration and reduce maintenance costs. Delivered nRF54L05/L10 target support across NFC, Edge Impulse, and ESB samples, including new build targets, overlays, and updated documentation, enabling customers to run these boards with existing sample code. Implemented HW errata HMPAN-216 workaround in the radio_test sample to improve test reliability and reduce unnecessary radio disable events. Result: broader device coverage, faster onboarding for new boards, and more robust sample suites.

January 2025

6 Commits • 2 Features

Jan 1, 2025

January 2025 performance summary for NordicBuilder/sdk-nrf and nrfconnect/sdk-nrf. Delivered targeted features and fixes across two repositories with a focus on cross-repo consistency, RF reliability, and developer productivity. Key deliverables include RF performance enhancements for nRF54H20 (radio trims and hardware errata workarounds across Direct Test Mode, Radio Test, and ESB samples), documentation readability and terminology alignment (ESB 2.9.0 known issues tag updated to v2-9-0 and terminology changes from 'example' to 'sample'), governance improvements via CODEOWNERS clarification, and cross-platform GPPI/DPPI configuration alignment (including a new DPPI config for nRF54L15DK). These changes reduce misconfigurations, accelerate code reviews, and improve cross-board testing reliability.

December 2024

3 Commits • 2 Features

Dec 1, 2024

December 2024 monthly performance summary for NordicBuilder/sdk-nrf: Key stability and documentation improvements enabling broader hardware support and smoother development workflows. Delivered Bluetooth RPC stability fix for nRF54H20, expanded NFC feature documentation for nRF54L05 and nRF54L10, and updated the ML application multi-image build (sysbuild) docs with clarified configuration paths and image names, plus a minor module description correction.

November 2024

3 Commits • 2 Features

Nov 1, 2024

2024-11 monthly summary for NordicBuilder/sdk-nrf: Focused on improving developer guidance and expanding hardware support. Key outcomes include documentation enhancements for NFC support coverage and known radio test issues, plus extending sample build/test support to include nRF54L05 and nRF54L10 targets. These changes improve onboarding, reduce guidance gaps, and broaden test coverage with minimal risk to existing workflows. All changes this month were documentation and configuration updates, contributing to faster time-to-market for new devices and clearer expectations for supported features.

Activity

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Quality Metrics

Correctness96.6%
Maintainability95.8%
Architecture95.4%
Performance94.2%
AI Usage20.4%

Skills & Technologies

Programming Languages

CDTSRSTYAMLconfdtsplaintextreStructuredTextrstyaml

Technical Skills

API DesignAPI integrationBluetoothBluetooth Low EnergyBluetooth developmentC ProgrammingC programmingCode Ownership ManagementConfiguration ManagementDevice DriversDevice TreeDocumentationDriver DevelopmentEmbedded SystemsEmbedded Systems Development

Repositories Contributed To

4 repos

Overview of all repositories you've contributed to across your timeline

nrfconnect/sdk-nrf

Jan 2025 Mar 2026
12 Months active

Languages Used

CYAMLRSTconfyamlrstDTSplaintext

Technical Skills

Bluetooth Low EnergyCode Ownership ManagementConfiguration ManagementDocumentationDriver DevelopmentEmbedded Systems

NordicBuilder/sdk-nrf

Nov 2024 Jan 2025
3 Months active

Languages Used

CYAMLrstRSTdts

Technical Skills

Configuration ManagementDevice TreeDocumentationEmbedded Systems DevelopmentFirmware EngineeringRTOS

nrfconnect/sdk-nrfxlib

Nov 2025 Feb 2026
2 Months active

Languages Used

Cplaintext

Technical Skills

API integrationC programmingembedded systemsproject managementteam collaboration

nrfconnect/sdk-zephyr

Dec 2025 Dec 2025
1 Month active

Languages Used

C

Technical Skills

C programmingconfiguration managementembedded systems