Re-engineering embedded Linux-based microprocessor, port to Windows

A precision sensor manufacturer specializing in vacuum measurement and tilt sensing solutions engaged PSI to analyze and modernize the embedded software for one of their industrial-grade digital vacuum gauges. Designed to provide accurate pressure readings within vacuum environments, the gauge is a critical component in manufacturing, research, and process control systems where precision and reliability are essential.

PSI was brought in to re-engineer the microprocessor firmware, addressing both architectural and functional limitations. The engagement included debugging and repairing non-functional SPI communication, implementing unit tests to ensure firmware stability, and restructuring the codebase to improve maintainability and performance. PSI also ported the firmware to a new development environment that enabled advanced debugging features — a key improvement for ongoing development and support.

As part of the modernization effort, PSI migrated the existing Linux-based toolchain to a Windows environment, while preserving development continuity by creating a virtual Linux environment for legacy workflows. This hybrid setup offered greater flexibility for engineering teams and streamlined the development process.

By applying deep embedded systems expertise and a methodical approach to software re-engineering, PSI delivered a more reliable, testable, and maintainable firmware platform for the client’s digital vacuum gauge. The result was improved product performance, greater development efficiency, and a scalable foundation for future enhancements in high-precision vacuum sensing technologies.