Write a to simulate serial traffic for testing.
Get the tool from the official Portmon - Sysinternals page. portmon
: It captures and logs the communication between applications and the physical ports (COM and LPT). This is invaluable for debugging device drivers or analyzing how software interacts with hardware. Key Features : Real-time Monitoring : Displays port activity as it happens. Write a to simulate serial traffic for testing
Portmon changed everything by moving the analysis entirely into software. Acting as a kernel-mode filter driver, Portmon inserted itself between a device driver and the operating system’s serial/parallel subsystem. It passively eavesdropped on every WriteFile and ReadFile operation, timestamping each transaction and displaying it in a clean, readable interface. For the first time, a developer with a laptop could see exactly what data was being sent to a robot controller or received from a weather satellite. The tool transformed opaque, invisible signals into a transparent log of text and hex dumps. This is invaluable for debugging device drivers or
Portmon is used to observe how software interacts with hardware ports. It is essentially a "sniffer" for I/O requests. Common scenarios include:
Occasionally, the name "portmon" appears in modern open-source projects as a shorthand for . In this context, it usually refers to a lightweight script or service (written in Python or Go) designed to: