Samsung/TizenRT
Nov 2024 – Dec 2025
8 Months active
Languages Used
assemblyCAssembly
Technical Skills
RF engineeringembedded systemslow-level programmingEmbedded SystemsNetwork ProgrammingRTOS
ZivLow
PROFILE
Zivlow
Ziv Lowenhao contributed to the Samsung/TizenRT repository by developing and maintaining low-level wireless and embedded system features, focusing on Wi-Fi, BLE, and RF subsystems. He refactored and optimized RF and Wi-Fi driver code in C and assembly, improved memory management, and enhanced network protocol reliability. Ziv addressed stability issues by debugging and fixing onboarding, PSRAM, and power management failures, and modernized build systems for maintainability. His work included targeted bug fixes, rollback of unstable changes, and integration of updated drivers, demonstrating depth in embedded systems, RTOS development, and firmware robustness. The engineering approach emphasized reliability, maintainability, and cross-team collaboration.
Overall Statistics
Feature vs Bugs
44%Features
Repository Contributions
26Total
Bugs
5
Commits
26
Features
4
Lines of code
1,748,279
Activity Months8
Your Network
56 peopleWork History
December 2025
16 Commits
Dec 1, 2025December 2025 - Samsung/TizenRT: Reliability and stability improvements across BLE, WLAN/driver stack, and power management. Delivered a focused BLE advertising robustness fix for power-gated scenarios with AP connectivity and restored overall system stability by reverting a broad set of experimental changes to a stable baseline. The work spanned BLE, PSRAM, watchdog, logging, and driver compatibility, aligning the codebase with production stability while maintaining readiness for future feature work.
16 Commits
Dec 1, 2025December 2025 - Samsung/TizenRT: Reliability and stability improvements across BLE, WLAN/driver stack, and power management. Delivered a focused BLE advertising robustness fix for power-gated scenarios with AP connectivity and restored overall system stability by reverting a broad set of experimental changes to a stable baseline. The work spanned BLE, PSRAM, watchdog, logging, and driver compatibility, aligning the codebase with production stability while maintaining readiness for future feature work.
December 2025
November 2025
2 Commits
Nov 1, 2025November 2025 monthly summary for Samsung/TizenRT: Delivered targeted stability improvements on the KM4 board and PSRAM subsystem. Key fixes addressed onboarding wake reliability and PSRAM autogating issues, resulting in more deterministic boot behavior and reduced risk of runtime crashes on critical paths.
November 2025
2 Commits
Nov 1, 2025November 2025 monthly summary for Samsung/TizenRT: Delivered targeted stability improvements on the KM4 board and PSRAM subsystem. Key fixes addressed onboarding wake reliability and PSRAM autogating issues, resulting in more deterministic boot behavior and reduced risk of runtime crashes on critical paths.
October 2025
1 Commits • 1 Features
Oct 1, 2025Monthly summary for 2025-10 focusing on Samsung/TizenRT build tooling hygiene and release metadata alignment. Delivered a targeted cleanup to reduce build log noise and ensure metadata reflects changes. Removed specific sre PG print logs from build/tools/amebasmart, and updated release notes, binary file metadata, version information, and compile timestamps to reflect the cleanup. This work improves developer productivity, CI stability, and release traceability, and provides cleaner artifacts for automated release workflows.
1 Commits • 1 Features
Oct 1, 2025Monthly summary for 2025-10 focusing on Samsung/TizenRT build tooling hygiene and release metadata alignment. Delivered a targeted cleanup to reduce build log noise and ensure metadata reflects changes. Removed specific sre PG print logs from build/tools/amebasmart, and updated release notes, binary file metadata, version information, and compile timestamps to reflect the cleanup. This work improves developer productivity, CI stability, and release traceability, and provides cleaner artifacts for automated release workflows.
October 2025
September 2025
1 Commits
Sep 1, 2025Month: 2025-09 — Samsung/TizenRT wireless stability and reliability improvements. Delivered a targeted fix for ADDBA negotiation failure and PMF decryption optimization, including an IGTK check for group rekey messages and a PMF-aware path that leverages hardware decryption when available. These changes reduce delayed downloads, improve management-frame handling, and enhance overall data transfer reliability in AP environments. Technologies demonstrated include ADDBA, PMF, IGTK, hardware-assisted decryption on RTL8721CSM, and related TizenRT code paths. Business value: higher reliability and user experience, fewer support tickets in enterprise deployments; technical achievements: improved throughput, lower latency, and more secure group rekey handling. Implementation reference: Samsung/TizenRT, commit 377bb57d8d3097b2060915d50f89e4bd51e23de2.
September 2025
1 Commits
Sep 1, 2025Month: 2025-09 — Samsung/TizenRT wireless stability and reliability improvements. Delivered a targeted fix for ADDBA negotiation failure and PMF decryption optimization, including an IGTK check for group rekey messages and a PMF-aware path that leverages hardware decryption when available. These changes reduce delayed downloads, improve management-frame handling, and enhance overall data transfer reliability in AP environments. Technologies demonstrated include ADDBA, PMF, IGTK, hardware-assisted decryption on RTL8721CSM, and related TizenRT code paths. Business value: higher reliability and user experience, fewer support tickets in enterprise deployments; technical achievements: improved throughput, lower latency, and more secure group rekey handling. Implementation reference: Samsung/TizenRT, commit 377bb57d8d3097b2060915d50f89e4bd51e23de2.
June 2025
1 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for Samsung/TizenRT: Delivered a WiFi driver enhancement and build system modernization to expand features, improve stability, and streamline maintenance. The work included updates to library packaging, enabling future WiFi capabilities, and setting a scalable foundation for upcoming releases.
1 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for Samsung/TizenRT: Delivered a WiFi driver enhancement and build system modernization to expand features, improve stability, and streamline maintenance. The work included updates to library packaging, enabling future WiFi capabilities, and setting a scalable foundation for upcoming releases.
June 2025
March 2025
3 Commits • 1 Features
Mar 1, 2025In March 2025, focused on stabilizing and modernizing the Samsung/TizenRT Wi-Fi network stack by integrating with the updated rtl8730e driver, renaming the OS interface, and removing legacy/unused code to improve reliability and maintainability. This work reduces build-time issues, lowers code bloat, and sets a solid foundation for future Wi-Fi enhancements across the platform, with clear driver-OS stack alignment and collaboration across the team.
March 2025
3 Commits • 1 Features
Mar 1, 2025In March 2025, focused on stabilizing and modernizing the Samsung/TizenRT Wi-Fi network stack by integrating with the updated rtl8730e driver, renaming the OS interface, and removing legacy/unused code to improve reliability and maintainability. This work reduces build-time issues, lowers code bloat, and sets a solid foundation for future Wi-Fi enhancements across the platform, with clear driver-OS stack alignment and collaboration across the team.
December 2024
1 Commits
Dec 1, 2024December 2024: Key Wi-Fi reliability improvement for Samsung/TizenRT. Delivered a robust fix for the Wi‑Fi scanning path on RTL8730E to prevent memory allocation issues when configuration_count is zero, improving stability and deployment readiness of network discovery across devices.
1 Commits
Dec 1, 2024December 2024: Key Wi-Fi reliability improvement for Samsung/TizenRT. Delivered a robust fix for the Wi‑Fi scanning path on RTL8730E to prevent memory allocation issues when configuration_count is zero, improving stability and deployment readiness of network discovery across devices.
December 2024
November 2024
1 Commits • 1 Features
Nov 1, 2024In 2024-11, delivered RF Subsystem Optimization and Stability Enhancements for Samsung/TizenRT. Refactored and optimized RF/baseband related functions to improve efficiency, management of RF parameters (power control, channel settings), and tracking/compensation across multiple frequency bands and modes to improve stability and performance of the RF subsystem. The work includes a targeted commit to limit frequency of sending probe responses to reduce unnecessary RF activity, improving resource utilization and reliability.
November 2024
1 Commits • 1 Features
Nov 1, 2024In 2024-11, delivered RF Subsystem Optimization and Stability Enhancements for Samsung/TizenRT. Refactored and optimized RF/baseband related functions to improve efficiency, management of RF parameters (power control, channel settings), and tracking/compensation across multiple frequency bands and modes to improve stability and performance of the RF subsystem. The work includes a targeted commit to limit frequency of sending probe responses to reduce unnecessary RF activity, improving resource utilization and reliability.
Activity
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Quality Metrics
Correctness84.0%
Maintainability80.8%
Architecture79.2%
Performance79.2%
AI Usage21.6%
Skills & Technologies
Programming Languages
AssemblyCassembly
Technical Skills
Build SystemsC ProgrammingC programmingCode RefactoringDebuggingDriver DevelopmentEmbedded SystemsFirmware DevelopmentLow-level ProgrammingNetwork ProgrammingNetwork ProtocolsNetworkingRF engineeringRTOSRTOS development
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