in reply to USB to serial "coupler"?

Why try to code it? For $20 you can get a usb-serial adaptor. Google for "serial to usb adapter". (Maybe I misunderstand your question?)

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Re^2: USB to serial "coupler"?
by Anonymous Monk on Jan 01, 2009 at 20:15 UTC
    This is the wrong way around. I'm not going from a serial dongle to a USB port - I'm going from a USB dongle to an application that can ONLY read from serial ports.

      You didn't mention your OS, but if you are on Win32, com0com provides an easy way to pipe stuff through serial ports. It provides a pair of connected virtual serial ports.

      You'd still need to write a translator that can talk to the USB dongle.

      Your serial requiring legacy code would connect to one port. Your translator would connect to the other port. The translator would then talk to the USB dongle and perform any needed protocol conversions.


      TGI says moo