Signal-Keysight_B1500-WGFMU

[franz-sweepMe]

Add a signal driver that allows loading custom sequences from a CSV file and run them on the pulse card

[gemini-code-assist]

Summary of Changes

Hello @franz-sweepMe, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request delivers a new driver for the Keysight B1500 WGFMU module, significantly enhancing its waveform generation and measurement capabilities within the SweepMe! framework. It allows users to define complex pulse sequences and measurement events using CSV files, which are then executed via a custom Python wrapper interacting with the instrument's native DLL. The addition includes comprehensive documentation and automated tests to ensure robust functionality and ease of use.

Highlights

• New Instrument Driver: Introduced a new driver for the Keysight B1500 semiconductor parameter analyzer, specifically targeting its WGFMU (Waveform Generator/Fast Measurement Unit) modules.
• Custom Waveform Generation: Enabled the definition of custom pulse sequences and measurement events through a user-friendly CSV file format, allowing for flexible experimental setups.
• Python Wrapper for WGFMU DLL: Developed a Python wrapper (pywgfmu) using ctypes to interface with the native WGFMU DLL, providing programmatic control over the instrument's advanced features.
• Comprehensive Documentation and Examples: Included detailed documentation (description.md) outlining the driver's usage, CSV file format, parameters, and return values, along with an example sequence CSV file.
• Automated Testing: Added unit and integration tests for the pywgfmu library to ensure the reliability and correctness of the DLL interactions and waveform generation capabilities.

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Changelog

• src/Signal-Keysight_B1500-WGFMU/doc/description.md
  • Added new file.
• src/Signal-Keysight_B1500-WGFMU/example_sequence.csv
  • Added new file.
• src/Signal-Keysight_B1500-WGFMU/libs/pywgfmu/wgfmu.py
  • Added new file.
• src/Signal-Keysight_B1500-WGFMU/license.txt
  • Added new file.
• src/Signal-Keysight_B1500-WGFMU/main.py
  • Added new file.
• src/Signal-Keysight_B1500-WGFMU/tests/integration/wgfmu_connection_tests.py
  • Added new file.
• src/Signal-Keysight_B1500-WGFMU/tests/unit/wgfmu_dll_tests.py
  • Added new file.

Activity

• No human activity has been recorded on this pull request yet.

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Code Review

This pull request introduces a comprehensive new driver for the Keysight B1500 WGFMU, complete with a DLL wrapper, SweepMe! integration, documentation, and tests. The overall structure is well-designed. However, a critical high-severity Path Traversal vulnerability has been identified, allowing arbitrary file reading. Additionally, two medium-severity issues related to potential code execution via malformed VISA addresses and DLL hijacking due to a hardcoded DLL path were found. Beyond security, there are areas for improvement including missing error handling in the DLL wrapper, a logic error in sequence repetition calculation, and potential issues with file parsing and empty data arrays. Suggestions for test isolation and documentation clarity are also provided.