Ben Scott <dragonh...@gmail.com> writes: > > On Sun, May 13, 2012 at 8:50 PM, Joshua Judson Rosen > <roz...@geekspace.com> wrote: > > Oh, you'd be surprised. Apparently there are a zillion different > > USB<->RS232 adapter chipsets, and a zillion different drivers > > required to drive them. > > I should learn not to underestimate the craptacularness of the pee > sea industry. > > There *is* a standard USB device class for RS-232. Not my fault > nobody uses it. ;)
Well, there's a standard device *class*..., full of *specific device* IDs for different devices of the same `nominal type' that all speak different specific protocols. It's the same case for USB scanners and cameras... which look like *they're* actually *both* lumped into the same `Image' class together: https://en.wikipedia.org/wiki/Universal_serial_bus#Device_classes And, no--`is my imager a camera or a scanner' is not the last question you need to answer before it'll work ;) Of course, if you're implementing either side of comms for, say, a GPS..., good luck with that--they don't even have a meaningful class--they're just `serial devices' (just like your `dumb USB serial cable'): http://gpsd.berlios.de/faq.html#conflict -- "Don't be afraid to ask (λf.((λx.xx) (λr.f(rr))))." _______________________________________________ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/