cmu-argus-2/FSW-mainboard
Jan 2025 – Oct 2025
7 Months active
Languages Used
PythonCMarkdownBinary
Technical Skills
Code CleanupCode RefactoringConfiguration ManagementDevice ManagementDriver DevelopmentEmbedded Systems
Perrin
PROFILE
Perrin
Perrin Tong developed and maintained the cmu-argus-2/FSW-mainboard repository, delivering core features for satellite flight software and embedded hardware integration. Over seven months, Perrin refactored hardware abstraction layers, improved driver reliability, and streamlined deployment workflows using Python, C, and MicroPython. He enhanced system stability by optimizing initialization flows, implementing robust error handling in device drivers, and integrating new hardware revisions. His work included burnwire deployment logic, emulator and simulator support, and migration of documentation to internal systems. Through rigorous code cleanup, testing, and configuration management, Perrin ensured maintainable, reliable firmware that accelerated feature delivery and reduced integration risk.
Overall Statistics
Feature vs Bugs
85%Features
Repository Contributions
126Total
Bugs
10
Commits
126
Features
58
Lines of code
41,112
Activity Months7
Your Network
31 people
Work History
October 2025
2 Commits • 1 Features
Oct 1, 2025Monthly summary for 2025-10 focused on cmu-argus-2/FSW-mainboard. Key outcomes: enhanced reliability and faster collaboration. Delivered two notable changes: 1) BMX160 driver error handling enhancement providing explicit exceptions for invalid power modes and set-change errors to improve visibility and prevent silent failures; 2) Code Ownership Policy Update removing CODEOWNERS to streamline ownership and accelerate code reviews. These changes reduce debugging time, avoid silent failures in critical driver code, and shorten PR cycles, contributing to overall system robustness and faster delivery. Technologies and skills demonstrated include embedded driver error handling patterns, commit-driven development, and policy changes to optimize development workflows.
2 Commits • 1 Features
Oct 1, 2025Monthly summary for 2025-10 focused on cmu-argus-2/FSW-mainboard. Key outcomes: enhanced reliability and faster collaboration. Delivered two notable changes: 1) BMX160 driver error handling enhancement providing explicit exceptions for invalid power modes and set-change errors to improve visibility and prevent silent failures; 2) Code Ownership Policy Update removing CODEOWNERS to streamline ownership and accelerate code reviews. These changes reduce debugging time, avoid silent failures in critical driver code, and shorten PR cycles, contributing to overall system robustness and faster delivery. Technologies and skills demonstrated include embedded driver error handling patterns, commit-driven development, and policy changes to optimize development workflows.
October 2025
September 2025
4 Commits • 3 Features
Sep 1, 2025September 2025 monthly summary for cmu-argus-2/FSW-mainboard focusing on delivering hardware bring-up, documentation consolidation, and reliability improvements, aligned with business value and long-term maintenance.
September 2025
4 Commits • 3 Features
Sep 1, 2025September 2025 monthly summary for cmu-argus-2/FSW-mainboard focusing on delivering hardware bring-up, documentation consolidation, and reliability improvements, aligned with business value and long-term maintenance.
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary focusing on delivering a high-impact deployment feature and reliability improvements on the FSW-mainboard. The primary delivery was a Burnwire Deployment System with robust timing control and deployment sequence integration, complemented by a driver refactor to the PCA9633 to correctly handle enable/disable states and to support deterministic actuation timings. Key outcomes include: precise burnwire sequencing within the command task, improved timing accuracy, and increased reliability of deployment activation under real-time constraints. The work included code commits linked to the feature, providing traceability to the burnwire sequence work.
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary focusing on delivering a high-impact deployment feature and reliability improvements on the FSW-mainboard. The primary delivery was a Burnwire Deployment System with robust timing control and deployment sequence integration, complemented by a driver refactor to the PCA9633 to correctly handle enable/disable states and to support deterministic actuation timings. Key outcomes include: precise burnwire sequencing within the command task, improved timing accuracy, and increased reliability of deployment activation under real-time constraints. The work included code commits linked to the feature, providing traceability to the burnwire sequence work.
May 2025
April 2025
27 Commits • 11 Features
Apr 1, 2025April 2025 monthly summary for cmu-argus-2/FSW-mainboard focused on delivering core features, stabilizing hardware interfaces, and improving development efficiency. Key outcomes include EPS interface and torque coil improvements, IMU timing optimization, Cubesat/simulator integration, HAL controller integration with radio and watchdog, bringup to version 1.1, and comprehensive code quality/build/documentation updates. These changes enhance safety, determinism, testability, and maintainability, driving business value through faster integration, reliable operation, and clearer project state.
April 2025
27 Commits • 11 Features
Apr 1, 2025April 2025 monthly summary for cmu-argus-2/FSW-mainboard focused on delivering core features, stabilizing hardware interfaces, and improving development efficiency. Key outcomes include EPS interface and torque coil improvements, IMU timing optimization, Cubesat/simulator integration, HAL controller integration with radio and watchdog, bringup to version 1.1, and comprehensive code quality/build/documentation updates. These changes enhance safety, determinism, testability, and maintainability, driving business value through faster integration, reliable operation, and clearer project state.
March 2025
46 Commits • 21 Features
Mar 1, 2025March 2025 monthly summary for cmu-argus-2/FSW-mainboard focused on stabilizing the ARGUS mainboard software stack, expanding HAL/emulator integration, expanding hardware support, and improving maintainability. Delivered concrete features and fixes with measurable business value, strengthened QA through linting and tests, and enhanced developer onboarding via documentation updates.
46 Commits • 21 Features
Mar 1, 2025March 2025 monthly summary for cmu-argus-2/FSW-mainboard focused on stabilizing the ARGUS mainboard software stack, expanding HAL/emulator integration, expanding hardware support, and improving maintainability. Delivered concrete features and fixes with measurable business value, strengthened QA through linting and tests, and enhanced developer onboarding via documentation updates.
March 2025
February 2025
28 Commits • 18 Features
Feb 1, 2025February 2025 performance summary for cmu-argus-2/FSW-mainboard. Focused on delivering reliable hardware-software improvements, expanding data handling capabilities, and aligning with the latest hardware revisions to accelerate future feature delivery. Key engineering efforts spanned data model enhancements, hardware abstraction improvements, firmware and toolchain updates, driver and sensor support, and quality/maintainability improvements. Key features delivered: - Object-to-dict mapping support to enable seamless data interchange between runtime objects and dict representations, facilitating higher-level orchestration (commit 8c241b875f789d14dbdd4d6848f43c984c303dab). - HAL (hardware abstraction layer) device update to streamline device integration and reduce friction when adding or swapping hardware components (commit 690d8dcf01c22e1ac629e4cf0f183a010cde07ae). - CPY9 firmware refresh and boot script update, including CPY9 firmware 1.1 and pinfile adjustments to improve boot reliability and static pin handling (commits 12d47f36f473fa0613b675e449329fbd0765cae1; 80337911ed0566bdbf7c32c2bb6bc5ea9d576a67). - MPY cross-compilation upgrade (from 22.04) with associated hardware alignment: updated cross-compiled runtime, and updates to v3 pinout, UF2 mapping, board pins, and Opt4003 driver/address integration (commits c13716495708e47984e1d8bb816bbf93eec8ce16; 88986f556d33231d01350eb4a9324972e034d; 9607699c1b0026489b1f05837c7d3071aba5ee9b; 4b8971a7b84efbcf81479df7a13eb48edbb08be8). - Driver and sensor stack refinements: updated DRV8235 temperature driver and magnet control function, radio driver updates, and revised IMU/ADM reset sequencing to support newer hardware configurations (commits 8e444ed60fd000895af3bd574dba58d3739a5d36; aec0a8eab7f7f8d2f1633c6a1920010129b3392d; 3a3b004f072d46e1f84fd24ea7480eaae426cb06). - Quality and maintainability enhancements: extensive linting and style improvements, configuration updates, documentation refresh, and a merge of latest changes from main to reduce drift (linting commits; d493cf38c5a0ea12ba2e6aa1a4ef0ee4e2e131a5; 7a6c56ea8fbf51e085e514fe8235f386ee9af633). Major bugs fixed: - Small FML subsystem fix to address stability gaps (commit 65687b3ed818f9fc5ff8ab18de6a76c96b258db2). - Sun sensor identifiers renamed and syntax issues resolved, removing reboot/errors related problems (commit 67ed85690906b0792df1f9428e23a2f8bb39e7b6). Overall impact and accomplishments: - Significantly improved hardware compatibility across revisions, reduced integration risk for new devices, and enhanced boot reliability for firmware updates. The changes lay groundwork for faster feature delivery by tightening the feedback loop between firmware, drivers, and hardware configuration. The consolidated improvements in data modeling, HAL, and quality practices position the project for scalable growth and easier onboarding for new contributors. Technologies and skills demonstrated: - HAL design and integration, firmware upgrade practices, and cross-compilation toolchains (MPY). - Driver development for DRV8235, Opt4003, and radio components; sensor reset sequencing and UF2/board pin mapping. - Software quality practices: linting, code style improvements, documentation updates, and mainline merging for consistency.
February 2025
28 Commits • 18 Features
Feb 1, 2025February 2025 performance summary for cmu-argus-2/FSW-mainboard. Focused on delivering reliable hardware-software improvements, expanding data handling capabilities, and aligning with the latest hardware revisions to accelerate future feature delivery. Key engineering efforts spanned data model enhancements, hardware abstraction improvements, firmware and toolchain updates, driver and sensor support, and quality/maintainability improvements. Key features delivered: - Object-to-dict mapping support to enable seamless data interchange between runtime objects and dict representations, facilitating higher-level orchestration (commit 8c241b875f789d14dbdd4d6848f43c984c303dab). - HAL (hardware abstraction layer) device update to streamline device integration and reduce friction when adding or swapping hardware components (commit 690d8dcf01c22e1ac629e4cf0f183a010cde07ae). - CPY9 firmware refresh and boot script update, including CPY9 firmware 1.1 and pinfile adjustments to improve boot reliability and static pin handling (commits 12d47f36f473fa0613b675e449329fbd0765cae1; 80337911ed0566bdbf7c32c2bb6bc5ea9d576a67). - MPY cross-compilation upgrade (from 22.04) with associated hardware alignment: updated cross-compiled runtime, and updates to v3 pinout, UF2 mapping, board pins, and Opt4003 driver/address integration (commits c13716495708e47984e1d8bb816bbf93eec8ce16; 88986f556d33231d01350eb4a9324972e034d; 9607699c1b0026489b1f05837c7d3071aba5ee9b; 4b8971a7b84efbcf81479df7a13eb48edbb08be8). - Driver and sensor stack refinements: updated DRV8235 temperature driver and magnet control function, radio driver updates, and revised IMU/ADM reset sequencing to support newer hardware configurations (commits 8e444ed60fd000895af3bd574dba58d3739a5d36; aec0a8eab7f7f8d2f1633c6a1920010129b3392d; 3a3b004f072d46e1f84fd24ea7480eaae426cb06). - Quality and maintainability enhancements: extensive linting and style improvements, configuration updates, documentation refresh, and a merge of latest changes from main to reduce drift (linting commits; d493cf38c5a0ea12ba2e6aa1a4ef0ee4e2e131a5; 7a6c56ea8fbf51e085e514fe8235f386ee9af633). Major bugs fixed: - Small FML subsystem fix to address stability gaps (commit 65687b3ed818f9fc5ff8ab18de6a76c96b258db2). - Sun sensor identifiers renamed and syntax issues resolved, removing reboot/errors related problems (commit 67ed85690906b0792df1f9428e23a2f8bb39e7b6). Overall impact and accomplishments: - Significantly improved hardware compatibility across revisions, reduced integration risk for new devices, and enhanced boot reliability for firmware updates. The changes lay groundwork for faster feature delivery by tightening the feedback loop between firmware, drivers, and hardware configuration. The consolidated improvements in data modeling, HAL, and quality practices position the project for scalable growth and easier onboarding for new contributors. Technologies and skills demonstrated: - HAL design and integration, firmware upgrade practices, and cross-compilation toolchains (MPY). - Driver development for DRV8235, Opt4003, and radio components; sensor reset sequencing and UF2/board pin mapping. - Software quality practices: linting, code style improvements, documentation updates, and mainline merging for consistency.
January 2025
18 Commits • 3 Features
Jan 1, 2025January 2025 (2025-01) monthly summary for cmu-argus-2/FSW-mainboard. Key features delivered include architecture cleanup by removing middleware, legacy HAL, and related tests across Argus and emulator, resulting in a simplified hardware abstraction and consolidated initialization flow. Also delivered an IMU driver refactor to rename functions and remove debug prints, improving readability and correctness of data access. Additionally, fuel gauge HAL improvements introduced a new test script and streamlined MAX17205 initialization by removing an unnecessary address parameter. Major build and initialization hygiene improvements were implemented by removing stray Adafruit register files, updating emulator configuration, and addressing initialization regressions related to address changes and firmware updates. Overall, these changes reduce maintenance burden, shrink the code surface, and improve emulator stability and deployment reliability.
18 Commits • 3 Features
Jan 1, 2025January 2025 (2025-01) monthly summary for cmu-argus-2/FSW-mainboard. Key features delivered include architecture cleanup by removing middleware, legacy HAL, and related tests across Argus and emulator, resulting in a simplified hardware abstraction and consolidated initialization flow. Also delivered an IMU driver refactor to rename functions and remove debug prints, improving readability and correctness of data access. Additionally, fuel gauge HAL improvements introduced a new test script and streamlined MAX17205 initialization by removing an unnecessary address parameter. Major build and initialization hygiene improvements were implemented by removing stray Adafruit register files, updating emulator configuration, and addressing initialization regressions related to address changes and firmware updates. Overall, these changes reduce maintenance burden, shrink the code surface, and improve emulator stability and deployment reliability.
January 2025
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Quality Metrics
Correctness87.0%
Maintainability88.4%
Architecture85.4%
Performance80.2%
AI Usage21.0%
Skills & Technologies
Programming Languages
BinaryCMarkdownPython
Technical Skills
Aerospace EngineeringBuild ScriptingBuild SystemsBuild ToolsCircuitPythonCode CleanupCode FormattingCode RefactoringConfiguration ManagementConstants ManagementData LoggingDevice DriversDevice ManagementDocumentationDocumentation Management
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