[myself248]

The ones that barf out a debug console from the processor's first init steps are probably not USB internally. ;)

But yeah, USB never came up with a good way to do peer-to-peer. On-the-go is super driver heavy and just not useful in the way RS232 is. New TVs still ship with it, for home automation reasons.

[exmadscientist]

And neither are they RS-232, unless you've got a transceiver (MAX232 etc) in there :)

Man... USB CDC is painful. It's so much "fun" that a serious solution on one product was two back-to-back FTDI transceivers. I think they finally designed that out, but I'm scared to look at what might be in its place now....

[myself248]

https://www.tindie.com/products/8086net/usb-usb-null-modem-c...

presented without comment

[rleigh]

Also https://www.ftdichip.com/Support/Documents/DataSheets/Cables...

They are genuinely useful.

[anitil]

That is equally parts silly and useful. There's so many time's I wish I'd had one.