Panalyzer | A Logic Analyzer based on the RaspberryPi

Panalyzer is a C library. Panalyzer has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

This is a Logic Analyzer that runs on the RaspberryPi. The basic idea is that it disables interrupts for a period, while sampling the GPIO pins once a microsecond. It then re-enables interupts and displays traces showing what the relevant GPIO pins were doing. Clearly the RaspberryPi is frozen while data is being gathered, because interrupts are disabled, but a timeout is implemented to avoid hanging for ever if a trigger word is not seen. Panalyzer has features such as specifying trigger patterns, buffer depth, a pair of cursors for measuring time periods on the trace, etc. In the display you can click and drag across part of the trace to zoom in on that section. Not all features are implemented yet, and there is scope to improve performance. The UI may well be reworked as the idea develops.