"Martin McCormick" <marti...@suddenlink.net> writes: > I have a Windows box that has software on it which programs > two-way radios and it would be nice to know what the radio and > computer are saying to each other. > > After trying a Windows application that reportedly can > capture serial port traffic, I find that it doesn't appear to > work with usb ports and unix/linux is my preferred world anyway > so is there any sort of hardware that would pass through a USB > connection from the Windows box to the radio and let me siphon > off the traffic to a linux system and log it? > > The Windows app I tried to use has been around for a > decade or more and probably works well with RS-232 ports but the > traffic I need to grab comes from a usb device that creates > /dev/ttyACM0 if plugged in to a Linux box and comm2 on the > Windows system > > When I tried it today, it did nothing but complain that > it was not connected. It finally dawned on me that it probably > sees no serial ports at all as it is supposed to automatically > find and log all port I/O and this is a relatively new HP > Pavilion desktop computer which has no native RS-232 ports or > parallel ports on it and, even if it did, the connection from the > radio to the usb port is a usb plug with the usb hardware in it > and a cable that plugs in to the radio that would most likely > not be practical to tap.
First, I assume the software isn't CHIRP, since that also runs under Linux (and is open source besides). When I faced a similar problem (reverse engineering the protocol used to talk to a hobby rocket altimeter), I put Windows on a virtualbox VM on my Linux machine, and then used wireshark to watch the protocol.