renesas/zephyr
Sep 2025 – Apr 2026
2 Months active
Languages Used
C
Technical Skills
C ProgrammingDriver DevelopmentEmbedded SystemsNetwork ProgrammingC programmingdriver development
Andreas Schweigstill
PROFILE
Andreas Schweigstill
Worked on stability and reliability improvements for embedded systems in the renesas/zephyr and nrfconnect/sdk-zephyr repositories, focusing on C programming, driver development, and network programming. Delivered targeted bug fixes, such as resolving build failures in SDMMC STM32 drivers by conditionally including functions and correcting HAL API usage based on hardware configuration. Enhanced HTTP server robustness by validating file descriptors to prevent crashes during refused WebSocket connections. Improved stepper motor control by updating position reading functions to hardware-specific implementations, reducing drift and increasing measurement accuracy. Prioritized clear, traceable changes and progressive stabilization, contributing to more reliable Zephyr-based embedded software projects.
Overall Statistics
Feature vs Bugs
0%Features
Repository Contributions
4Total
Bugs
4
Commits
4
Features
0
Lines of code
22
Activity Months3
Your Network
1027 peopleWork History
April 2026
1 Commits
Apr 1, 2026Month: 2026-04 – Renesas/zephyr repository: Delivered a targeted bug fix to improve stepper motor position reading accuracy. Updated function calls from the generic read_actual_position() to architecture-specific implementations tmc50xx_read_actual_position() and tmc51xx_read_actual_position(), aligning with TMC50xx/51xx hardware and reducing position-reading drift for reliable closed-loop control. Commit 324338ad391d2692b99e8fe2852c92d61c922b42 includes the change with sign-off by Andreas Schweigstill.
1 Commits
Apr 1, 2026Month: 2026-04 – Renesas/zephyr repository: Delivered a targeted bug fix to improve stepper motor position reading accuracy. Updated function calls from the generic read_actual_position() to architecture-specific implementations tmc50xx_read_actual_position() and tmc51xx_read_actual_position(), aligning with TMC50xx/51xx hardware and reducing position-reading drift for reliable closed-loop control. Commit 324338ad391d2692b99e8fe2852c92d61c922b42 includes the change with sign-off by Andreas Schweigstill.
April 2026
November 2025
1 Commits
Nov 1, 2025Month: 2025-11 monthly summary focusing on key accomplishments, features delivered, major bugs fixed, and impact. Repository: nrfconnect/sdk-zephyr. The primary deliverable this month was a critical SD/MMC STM32 HAL call selection bug fix in sdmmc_stm32.c to resolve a build-time compilation error. The fix conditionally calls HAL_MMC_ConfigWideBusOperation() or HAL_SD_ConfigWideBusOperation() depending on CONFIG_SDMMC_STM32_EMMC, ensuring correct HAL API usage for both SD and eMMC configurations. Commit associated with this change: 869881ef2138e5c69e3dc366114773810cfb114a (drivers: disk: sdmmc_stm32.c: fix HAL_*_ConfigWideBusOperation).
November 2025
1 Commits
Nov 1, 2025Month: 2025-11 monthly summary focusing on key accomplishments, features delivered, major bugs fixed, and impact. Repository: nrfconnect/sdk-zephyr. The primary deliverable this month was a critical SD/MMC STM32 HAL call selection bug fix in sdmmc_stm32.c to resolve a build-time compilation error. The fix conditionally calls HAL_MMC_ConfigWideBusOperation() or HAL_SD_ConfigWideBusOperation() depending on CONFIG_SDMMC_STM32_EMMC, ensuring correct HAL API usage for both SD and eMMC configurations. Commit associated with this change: 869881ef2138e5c69e3dc366114773810cfb114a (drivers: disk: sdmmc_stm32.c: fix HAL_*_ConfigWideBusOperation).
September 2025
2 Commits
Sep 1, 2025Monthly summary for 2025-09 focusing on stability and build reliability for the renesas/zephyr project. Delivered two critical bug fixes that reduce runtime crashes and build failures, improving product quality and customer confidence.
2 Commits
Sep 1, 2025Monthly summary for 2025-09 focusing on stability and build reliability for the renesas/zephyr project. Delivered two critical bug fixes that reduce runtime crashes and build failures, improving product quality and customer confidence.
September 2025
Activity
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Quality Metrics
Correctness95.0%
Maintainability95.0%
Architecture95.0%
Performance95.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
C
Technical Skills
C ProgrammingC programmingDriver DevelopmentEmbedded SystemsNetwork Programmingdevice driver developmentdriver developmentembedded systems
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline
nrfconnect/sdk-zephyr
Nov 2025 – Nov 2025
1 Month active
Languages Used
C
Technical Skills
C programmingdevice driver developmentembedded systems