lf-lang/playground-lingua-franca
Feb 2025 – Mar 2025
2 Months active
Languages Used
CLFLingua FrancaMarkdown
Technical Skills
Build Systems (CMake)C ProgrammingCode CleanupCode FormattingCode MaintenanceCode Organization
蔡承諺
PROFILE
蔡承諺
Yiming Ma developed the core simulation and safety features for an autonomous ski lift system in the lf-lang/playground-lingua-franca repository. Over two months, Yiming designed and implemented real-time control logic in C and Lingua Franca, integrating pressure sensor data to drive safety decisions and motion state management. The work included a robust exit-area handler that stops the lift if passengers obstruct the exit, enhancing operational safety. Yiming refactored system components into reusable libraries, improved terminal visualization, and established documentation scaffolding. The engineering demonstrated strong embedded systems skills, careful code organization, and a focus on maintainability and realistic simulation fidelity.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
17Total
Bugs
0
Commits
17
Features
3
Lines of code
1,883
Activity Months2
Your Network
8 peopleShared Repositories
8
Work History
March 2025
1 Commits • 1 Features
Mar 1, 2025In March 2025, delivered a safety-critical feature for the Ski Lift exit safety in lf-lang/playground-lingua-franca. Implemented an urgent handler that monitors exit-area weight and triggers an 'urgent' state to stop the lift when the exit is blocked, ensuring safe operation if passengers obstruct the exit path. The feature was implemented with a robust sensor-driven control flow and integrated with the existing safety system. This work demonstrates real-time monitoring, state management, and safety-critical software practices. Commit: 670dafde8c0b9692c5b40a743b2d17b86ca90219.
1 Commits • 1 Features
Mar 1, 2025In March 2025, delivered a safety-critical feature for the Ski Lift exit safety in lf-lang/playground-lingua-franca. Implemented an urgent handler that monitors exit-area weight and triggers an 'urgent' state to stop the lift when the exit is blocked, ensuring safe operation if passengers obstruct the exit path. The feature was implemented with a robust sensor-driven control flow and integrated with the existing safety system. This work demonstrates real-time monitoring, state management, and safety-critical software practices. Commit: 670dafde8c0b9692c5b40a743b2d17b86ca90219.
March 2025
February 2025
16 Commits • 2 Features
Feb 1, 2025February 2025 monthly summary for lf-lang/playground-lingua-franca. Focused on delivering a functional autonomous ski lift core simulation, stabilizing system architecture for long-term maintainability, and laying groundwork for sensor-driven safety decisions and production-quality tooling. Key features delivered: - Autonomous Ski Lift System Core Simulation: visual terminal animation, Lift, EntryGate, and sensors with gate/motion logic; improved system organization and data presentation. Notable progress across commits: initial animation and gate status printing (c18d14e5e07e9ce76cfc73336226b28704d2ccf8); switch to pressure-based weight calculation (24f9878d703f2ed32da8db0be8274d2e6e4f59b7); print data and debug messages from pressure sensors (93d08a0ff556d4bce1955b87750fd2c3b76e0f85). - UI/Output stabilization and behavior decisions: ensure consistent motion state messaging and robust stdout handling (fix: print moving/stop on input, 011a216493d95e416b0ff7eefd3694f488c5c628). Considerations for gate/open/close and lift/move decisions implemented (e70ee85548324b21c42ba542d89c74e569e1e293). - Code quality and maintainability improvements: refactor Lift-related C code into a cohesive library (refactor: LiftMotion modal to lib/LiftMotion.lf; format and cleanup via VSCode formatter; remove unused C files) (afcdf8d091a74fa51fd7721c9b736e69554cd38f; d441c4d9a1873fef55157f2487e4f95d5b116952). - Documentation and scaffolding: README initialization and documentation scaffolding, plus formatting and newline integrity for long-term maintainability (9930053fd8f7b234bc404b6382f1cc24d100ad50; f800d2c9b1229c0d4763422b587d365b660fb604; 769be41abf189962d0924fceee06060ac04ed130). Major bugs fixed: - Ensured consistent movement state messaging; print moving/stop on every input (fix: c7bbd48960d10b55fcbeee93bc6f5f97c2145529). - Standardized stdout usage, refactored output pipeline, and removed unused files (fix: afcdf8d091a74fa51fd7721c9b736e69554cd38f; 011a216493d95e416b0ff7eefd3694f488c5c628). - Improved formatting and readability across codebase, including newline handling and overall file formatting (fixes: 0bfb0e4ab1fd66f2c76f303082c6b24716a35500; 69b87e898900dbe6fb124874a9e6b7214135cfb4). - Stabilized screen printing during race-condition-like events to prevent flicker or lost updates (fix: 47b0762620bbf1c33c51d7442f7a025e2884394c). - Cleaned up comments and removed stale TODOs to reduce noise (fix: 7e81e63699de4a12ce4d84e9e025319c005e54f9; 0bfb0e4ab1fd66f2c76f303082c6b24716a35500). Overall impact and accomplishments: - Strengthened simulation fidelity and safety-readiness by using pressure-based weight data and robust motion/gate decision logic, enabling more realistic scenario testing and risk evaluation. - Improved maintainability and reusability via library-style refactors (LiftMotion in lib/LiftMotion.lf) and reusable ScreenPrinter/output modules, paving the way for broader reuse across projects. - Established a solid documentation baseline and formatting discipline to support long-term collaboration, faster onboarding, and CI reliability. Technologies/skills demonstrated: - C/C language skills, embedded-system-like simulation, and sensor integration (pressure sensor) for weight estimation. - System architecture and refactoring to library modules for reuse. - UI/terminal visualization and robust stdout handling for reliable observability. - Code quality practices: automated formatting, clean git history, and documentation scaffolding.
February 2025
16 Commits • 2 Features
Feb 1, 2025February 2025 monthly summary for lf-lang/playground-lingua-franca. Focused on delivering a functional autonomous ski lift core simulation, stabilizing system architecture for long-term maintainability, and laying groundwork for sensor-driven safety decisions and production-quality tooling. Key features delivered: - Autonomous Ski Lift System Core Simulation: visual terminal animation, Lift, EntryGate, and sensors with gate/motion logic; improved system organization and data presentation. Notable progress across commits: initial animation and gate status printing (c18d14e5e07e9ce76cfc73336226b28704d2ccf8); switch to pressure-based weight calculation (24f9878d703f2ed32da8db0be8274d2e6e4f59b7); print data and debug messages from pressure sensors (93d08a0ff556d4bce1955b87750fd2c3b76e0f85). - UI/Output stabilization and behavior decisions: ensure consistent motion state messaging and robust stdout handling (fix: print moving/stop on input, 011a216493d95e416b0ff7eefd3694f488c5c628). Considerations for gate/open/close and lift/move decisions implemented (e70ee85548324b21c42ba542d89c74e569e1e293). - Code quality and maintainability improvements: refactor Lift-related C code into a cohesive library (refactor: LiftMotion modal to lib/LiftMotion.lf; format and cleanup via VSCode formatter; remove unused C files) (afcdf8d091a74fa51fd7721c9b736e69554cd38f; d441c4d9a1873fef55157f2487e4f95d5b116952). - Documentation and scaffolding: README initialization and documentation scaffolding, plus formatting and newline integrity for long-term maintainability (9930053fd8f7b234bc404b6382f1cc24d100ad50; f800d2c9b1229c0d4763422b587d365b660fb604; 769be41abf189962d0924fceee06060ac04ed130). Major bugs fixed: - Ensured consistent movement state messaging; print moving/stop on every input (fix: c7bbd48960d10b55fcbeee93bc6f5f97c2145529). - Standardized stdout usage, refactored output pipeline, and removed unused files (fix: afcdf8d091a74fa51fd7721c9b736e69554cd38f; 011a216493d95e416b0ff7eefd3694f488c5c628). - Improved formatting and readability across codebase, including newline handling and overall file formatting (fixes: 0bfb0e4ab1fd66f2c76f303082c6b24716a35500; 69b87e898900dbe6fb124874a9e6b7214135cfb4). - Stabilized screen printing during race-condition-like events to prevent flicker or lost updates (fix: 47b0762620bbf1c33c51d7442f7a025e2884394c). - Cleaned up comments and removed stale TODOs to reduce noise (fix: 7e81e63699de4a12ce4d84e9e025319c005e54f9; 0bfb0e4ab1fd66f2c76f303082c6b24716a35500). Overall impact and accomplishments: - Strengthened simulation fidelity and safety-readiness by using pressure-based weight data and robust motion/gate decision logic, enabling more realistic scenario testing and risk evaluation. - Improved maintainability and reusability via library-style refactors (LiftMotion in lib/LiftMotion.lf) and reusable ScreenPrinter/output modules, paving the way for broader reuse across projects. - Established a solid documentation baseline and formatting discipline to support long-term collaboration, faster onboarding, and CI reliability. Technologies/skills demonstrated: - C/C language skills, embedded-system-like simulation, and sensor integration (pressure sensor) for weight estimation. - System architecture and refactoring to library modules for reuse. - UI/terminal visualization and robust stdout handling for reliable observability. - Code quality practices: automated formatting, clean git history, and documentation scaffolding.
Activity
Loading activity data...
Quality Metrics
Correctness91.8%
Maintainability94.2%
Architecture90.6%
Performance87.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
CLFLingua FrancaMarkdown
Technical Skills
Build Systems (CMake)C ProgrammingCode CleanupCode FormattingCode MaintenanceCode OrganizationCode RefactoringConcurrencyDebuggingDocumentationEmbedded SystemsFile FormattingFile ManagementIoTLingua Franca
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline