Samsung/TizenRT
Apr 2025 – Jan 2026
8 Months active
Languages Used
CAssembly
Technical Skills
BluetoothEmbedded SystemsBuild SystemsCryptographyRTOSDriver Development
Zi Yik
PROFILE
Zi Yik
Ziyik Cheah contributed to the Samsung/TizenRT repository by developing and refining Bluetooth Low Energy features, cryptographic operations, and embedded system reliability. Over eight months, Ziyik built BLE pairing APIs, enhanced advertising flexibility, and optimized coexistence logic, using C and Assembly to address low-level memory management and concurrency. He improved the robustness of the BLE stack and MIPI protocol handling, introduced error handling in flash memory operations, and standardized logging for maintainability. His work focused on stability and efficiency, resolving complex bugs and integrating new features that strengthened device connectivity and security in resource-constrained embedded environments, demonstrating deep embedded systems expertise.
Overall Statistics
Feature vs Bugs
36%Features
Repository Contributions
15Total
Bugs
9
Commits
15
Features
5
Lines of code
2,034
Activity Months8
Your Network
56 peopleWork History
January 2026
3 Commits • 3 Features
Jan 1, 2026January 2026 (Samsung/TizenRT) focused on strengthening BLE reliability, logging consistency, and Bluetooth coexistence performance. Delivered targeted BLE feature work, code hygiene improvements, and performance optimizations that reduce runtime issues, improve maintainability, and enhance developer and user experience.
3 Commits • 3 Features
Jan 1, 2026January 2026 (Samsung/TizenRT) focused on strengthening BLE reliability, logging consistency, and Bluetooth coexistence performance. Delivered targeted BLE feature work, code hygiene improvements, and performance optimizations that reduce runtime issues, improve maintainability, and enhance developer and user experience.
January 2026
December 2025
2 Commits
Dec 1, 2025Month: 2025-12 — Samsung/TizenRT: Reliability and performance improvements in the FTL (Flash Translation Layer) surfaced through two targeted bug fixes. FTL Write Error Handling introduces explicit error codes on write failures, improving data integrity, debuggability, and operational resilience. FTL Hang Issue Resolution optimizes flash status bit handling, migrates critical APIs to RAM for faster execution, simplifies status bit setting, and strengthens flash operation locking for both reads and writes. Overall impact includes higher system stability, reduced mean time to repair (MTTR) for flash-related issues, and improved throughput in embedded deployments. Demonstrates proficiency in embedded C, RAM-based code optimization, flash memory management, and robust concurrency controls.
December 2025
2 Commits
Dec 1, 2025Month: 2025-12 — Samsung/TizenRT: Reliability and performance improvements in the FTL (Flash Translation Layer) surfaced through two targeted bug fixes. FTL Write Error Handling introduces explicit error codes on write failures, improving data integrity, debuggability, and operational resilience. FTL Hang Issue Resolution optimizes flash status bit handling, migrates critical APIs to RAM for faster execution, simplifies status bit setting, and strengthens flash operation locking for both reads and writes. Overall impact includes higher system stability, reduced mean time to repair (MTTR) for flash-related issues, and improved throughput in embedded deployments. Demonstrates proficiency in embedded C, RAM-based code optimization, flash memory management, and robust concurrency controls.
November 2025
1 Commits • 1 Features
Nov 1, 2025Monthly summary for 2025-11 focusing on business value and technical achievements. Delivered a Bluetooth Advertising Enhancement in Samsung/TizenRT to support flexible non-connectable advertising after a connection, broadening post-connection advertising scenarios and improving device interoperability on RTL8721C-based platforms. The work enhances Bluetooth communication capabilities in constrained embedded environments and provides clear commit traceability for the feature.
1 Commits • 1 Features
Nov 1, 2025Monthly summary for 2025-11 focusing on business value and technical achievements. Delivered a Bluetooth Advertising Enhancement in Samsung/TizenRT to support flexible non-connectable advertising after a connection, broadening post-connection advertising scenarios and improving device interoperability on RTL8721C-based platforms. The work enhances Bluetooth communication capabilities in constrained embedded environments and provides clear commit traceability for the feature.
November 2025
October 2025
2 Commits
Oct 1, 2025Monthly work summary for 2025-10 focusing on business value and technical achievements in the Samsung/TizenRT repository. This period centered on stabilizing critical power and connectivity flows, reducing crash scenarios during suspend/resume, and tightening Bluetooth LE connection handling to improve reliability in device integrations.
October 2025
2 Commits
Oct 1, 2025Monthly work summary for 2025-10 focusing on business value and technical achievements in the Samsung/TizenRT repository. This period centered on stabilizing critical power and connectivity flows, reducing crash scenarios during suspend/resume, and tightening Bluetooth LE connection handling to improve reliability in device integrations.
September 2025
2 Commits
Sep 1, 2025Month: 2025-09. This month focused on improving BLE reliability across key hardware targets in Samsung/TizenRT and ensuring robust performance for BLE features in production.
2 Commits
Sep 1, 2025Month: 2025-09. This month focused on improving BLE reliability across key hardware targets in Samsung/TizenRT and ensuring robust performance for BLE features in production.
September 2025
July 2025
2 Commits
Jul 1, 2025July 2025 (Samsung/TizenRT) focused on robustness improvements in cryptographic operations and hardware interface reliability. Delivered targeted bug fixes that reduce failure modes in secure data handling and MIPI communication, contributing to product stability and maintainability for embedded deployments.
July 2025
2 Commits
Jul 1, 2025July 2025 (Samsung/TizenRT) focused on robustness improvements in cryptographic operations and hardware interface reliability. Delivered targeted bug fixes that reduce failure modes in secure data handling and MIPI communication, contributing to product stability and maintainability for embedded deployments.
May 2025
2 Commits • 1 Features
May 1, 2025Monthly performance summary for May 2025 (Samsung/TizenRT). Focused on reliability, efficiency, and secure memory usage in embedded BLE features across the Samsung/TizenRT repo.
2 Commits • 1 Features
May 1, 2025Monthly performance summary for May 2025 (Samsung/TizenRT). Focused on reliability, efficiency, and secure memory usage in embedded BLE features across the Samsung/TizenRT repo.
May 2025
April 2025
1 Commits
Apr 1, 2025April 2025 monthly review for Samsung/TizenRT focusing on BLE scatter net example integration on RTL8730E. This period centered on a reliability-focused bug fix that improves BLE stack robustness and server callback processing, aligning with business goals of stable device connectivity and smoother developer workflows.
April 2025
1 Commits
Apr 1, 2025April 2025 monthly review for Samsung/TizenRT focusing on BLE scatter net example integration on RTL8730E. This period centered on a reliability-focused bug fix that improves BLE stack robustness and server callback processing, aligning with business goals of stable device connectivity and smoother developer workflows.
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Quality Metrics
Correctness86.0%
Maintainability84.0%
Architecture82.6%
Performance81.4%
AI Usage22.6%
Skills & Technologies
Programming Languages
AssemblyC
Technical Skills
BluetoothBluetooth DevelopmentBluetooth Low EnergyBluetooth developmentBuild SystemsC ProgrammingC programmingCryptographyDriver DevelopmentEmbedded SystemsMIPI ProtocolMemory ManagementRTOSembedded systemserror handling
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