RS-232 serial snoop tools for protocol development / debugging [closed]
https://stackoverflow.com/questions/1023181
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06-07-2019 - |
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I developing a wide range of relatively simple firmware devices. Every one of these ends up talking to the PC (or another device) via the RS-232 port in one way or another, so I spend a lot of time implementing and debugging their communication protocols.
My most common use case is to snoop on a program running on my PC that is communicating with a device via the serial port (RS-232). I want to see what is sent and when, mangle / delay incoming and outgoing data and perhaps inject data (especially in response to incoming data based on rules).
Free tools
- Free Serial Port Monitor - With a name like that, how didn't I find it?
Good commercial tools
- SerialTest - Demo version does no snooping at all, have to pay to get a real trial.
- RS232 analyser - Demo version can't monitor, have to pay to get a real trial. It doesn't seem to do software monitoring, only using hardware can it snoop. It has a useful mode where it can act like a simple RS-232 device with programmable auto-responses.
- SerialSniffer - again, commercial. The demo doesn't seem to include functionality.
- Docklight has potential, the demo looks useful, hardware snooping only and simulation like RS-232 analyser.
Related
- com0com - Create virtual serial ports on your PC and then connect them to each other to connect one application to another without hardware
What I want right now is basically WireShark for serial. I love the way it snoops and decodes standard network protocols. I just wish it could snoop serial ports (perhaps there is a good plugin?)
Solution
I propose Free Serial Port Monitor. I used two years ago, and it was very useful and also free.
Free Serial Port Monitor allows you to intercept, display and analyze all data exchanged between the Windows application and the serial device. It can be successfully used in application development, device driver or serial hardware development and offers the powerful platform for effective coding, testing and optimization.
