On Wed, 2018-06-06 at 22:26 -0600, Joe Pfeiffer wrote: > Richard Owlett <rowl...@cloud85.net> writes: > > > I have two computers with USB ports. > > I wish them to communicate as simply as mid-20th-century computers > > did. > > Then we used RS232-C with a null modem &/or appropriate software > > software at both ends. > > > > The underlying problem is that both ends egotistically expect to be > > *MASTER*. > > > > The hardware problem is solvable > > [e.g. http://www.ftdichip.com/Products/Cables/USBtoUSB.htm]. > > Given how FTDI does things, I'd be really surprised if this didn't > meet > your desires. Have you actually tried it? Are you sure there is no > driver in the kernel?
There is a driver in Linux because, from what the datasheet says, that cable is two of FTDIs standard USB-to-serial chips wired together. I.e. it's equivalent to getting 2 USB to serial cables and connecting them with a null modem cable. -- Tixy