chipsalliance/caliptra-ss
Sep 2025 – Oct 2025
2 Months active
Languages Used
CPythonYAMLSystemVerilogTcl
Technical Skills
Embedded SystemsFirmware DevelopmentHardware VerificationTest AutomationBuild SystemsCI/CD
Rupert Swarbrick
PROFILE
Rupert Swarbrick
During a two-month period, Rob Swarbrick enhanced the reliability and test coverage of the chipsalliance/caliptra-ss repository, focusing on the fuse control and verification modules. He improved error handling and observability by refactoring SystemVerilog testbenches and strengthening logging, which stabilized CI/CD pipelines and reduced flaky builds. Rob addressed timing issues and corrected state transition logic in embedded C firmware, ensuring accurate reporting and robust initialization. By integrating external lowRISC change bundles and updating pipeline metadata, he maintained compatibility and traceability. His work leveraged Embedded C, SystemVerilog, and test automation to deliver safer releases and more efficient hardware verification processes.
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
5Total
Bugs
1
Commits
5
Features
2
Lines of code
1,185
Activity Months2
Your Network
4184 people
Work History
October 2025
4 Commits • 1 Features
Oct 1, 2025In October 2025, delivered critical fuse control fixes and enhanced FSM coverage in CI, advancing reliability, test coverage, and build stability. Changes align with external lowRISC bundles and improve reporting accuracy and debugging visibility, creating tangible business value through more robust firmware behavior and faster validation.
4 Commits • 1 Features
Oct 1, 2025In October 2025, delivered critical fuse control fixes and enhanced FSM coverage in CI, advancing reliability, test coverage, and build stability. Changes align with external lowRISC bundles and improve reporting accuracy and debugging visibility, creating tangible business value through more robust firmware behavior and faster validation.
October 2025
September 2025
1 Commits • 1 Features
Sep 1, 2025In September 2025, the caliptra-ss repository delivered reliability improvements for the Fuse Control and Verification (fuse_ctrl/dv) modules, enhancing observability, test quality, and state-transition robustness. The work tightened error handling, eliminated an infinite-loop scenario in an invalid state transition test, and kept CI/CD pipelines in sync with updated metadata, contributing to safer releases and faster iteration cycles.
September 2025
1 Commits • 1 Features
Sep 1, 2025In September 2025, the caliptra-ss repository delivered reliability improvements for the Fuse Control and Verification (fuse_ctrl/dv) modules, enhancing observability, test quality, and state-transition robustness. The work tightened error handling, eliminated an infinite-loop scenario in an invalid state transition test, and kept CI/CD pipelines in sync with updated metadata, contributing to safer releases and faster iteration cycles.
Activity
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Quality Metrics
Correctness82.0%
Maintainability80.0%
Architecture76.0%
Performance64.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
CPythonSystemVerilogTclYAML
Technical Skills
Build SystemsCI/CDDebuggingEmbedded CEmbedded SystemsFirmware DevelopmentHardware InteractionHardware VerificationSystemVerilog AssertionsTest AutomationTest DevelopmentTestbench DevelopmentTesting
Repositories Contributed To
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