Re: USB "null modem" cables and related Linux driver questions

[Richard Owlett <rowlett@cloud85.net>]

On 06/01/2018 08:21 AM, tomas@tuxteam.de wrote:
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> On Fri, Jun 01, 2018 at 08:23:42AM -0400, Stefan Monnier wrote:
> > > The one choice you have is that one of both sides takes a step
> > > back and plays "gadget" [...]
>
> > The gadget API is the programming API offered by the kernel for the OTG
> > ports: no OTG => no gadget!
> >
> > > [OTG]
>
> > More importantly, the USB ports which support OTG are driven by
> > different hardware.
>
> Ah, so the hardware has to play along...
>
> > Right, you need both your hardware's USB port to support OTG and you
> > need your kernel to have a driver that supports this hardware.
> > AFAIK the driver is usually available.
>
> Did I say I was handwaving?
>
> Thanks for the clarifications!

It also suggests that I frequently grasp some of the implications of 
what I read. Thank you.
As an illustration of my mindset:
If they had really intended USB to be *UNIVERSAL* serial bus, then it 
should have been OTG from the get go.
P.S. I know of thousands of reasons they did not.
     Vast majority preceded by $ ;/