Digi Watchport/T temperature sensor as /dev/ttyU

[Ian Lepore]

On Sat, 2016-07-23 at 22:04 +0200, O. Hartmann wrote:
> Am Fri, 22 Jul 2016 10:52:54 -0600
> Ian Lepore <ian at freebsd.org> schrieb:
> 
> > On Fri, 2016-07-22 at 18:35 +0200, O. Hartmann wrote:
> > > For temperature monitoring, we have a bunch of Digi Watchport/T
> > > sensors: 
> > > 
> > > http://ftp1.digi.com/support/documentation/90000406_H.pdf
> > > 
> > >   
> > [...]
> > 
> > I think the attached patch will make it show up as a ttyU*/cuaU*
> > device
> > for you.  (You should probably use the /dev/cuaU* flavor, to avoid
> > problems with tty layer and modem control signals).
> > 
> > I keep wishing we had a mechanism, like a sysctl that could be set
> > or
> > something, that would let you supply a vendor/product pair and have
> > the
> > ugensa driver attach to that device, for quick testing of this sort
> > of
> > thing.
> > 
> > -- Ian
> 
> No, it doesn't change anything. I applied the patch to most recent
> CURRENT and it is
> still the same. But thanks anyway.
> 
> Kind regards,
> 
> oh

Oh, my bad, I forgot to mention:  You'll have to manually "kldload
ugensa" before plugging in the device (or load it from your
loader.conf).

When the change gets committed (assuming it works), the devd usb
scripts will get regenerated, and that's what handles the auto-load of
the driver.

-- Ian