"Shim" -- sorry if it's obscure.
It's a term taken from carpentry, I think, a small piece of wood inserted
to make things fit together.
In software it's usually a compatibility component that allows dissimilar
protocols to work together.
In this case, OWW expects to talk to a bus master directly. OWFS presents
it's data on a higher level -- I.e., it gives you the temperature, and
doesn't expose the actual byte commands.
An analogy would be a disk controller. Having two disk controllers working
on the same disk is dangerous, so virtual machines provide a simulation of
a disk. That's what we would need to do.
Paul
On Thu, Jan 17, 2013 at 3:09 AM, Romain Bourdy <[email protected]> wrote:
> Thomas,
> (Someone correct me if I'm wrong)
>
> You could see it as a "fake" implementation of a stack, relying on
> another stack for compatibilty purposes.
> eg: could be a fake usb or serial adapter relying on owfs onewire stack.
>
> On Thu, Jan 17, 2013 at 9:00 AM, Thomas Parvais <[email protected]>
> wrote:
> > Not sure I understand what is a "shim" ?
> >
> > Thomas
> >
> > Le 17 janv. 2013 à 02:28, Paul Alfille <[email protected]> a écrit
> :
> >
> > OWW, OWFS and digitemp all talk directly to the bus master. It should be
> > possible to create a "shim" -- letting owfs emulate a bus master for
> OWW. It
> > takes a bit of guesswork since the owfs will want the OWW query to a
> slave
> > to complete before allowing oher access. Usually a short timeout (except
> for
> > temperature sensors) is all that's needed.
> >
> > Paul Alfille
> >
> >
> > On Tue, Jan 15, 2013 at 10:29 AM, Thomas Parvais <[email protected]>
> wrote:
> >>
> >> Hello
> >>
> >> I have owfs running on a sheevaplug to capture different 1-wire sensors
> >> inside my house.
> >> I want also to capture properly weather measurements with different
> >> weather sensors I have also:
> >>
> >> -AAG weather station V3
> >> -rainmeter Hobby board
> >> -lighting hobby board
> >> -temp / barometer hobby board
> >>
> >> I'm not sure that measuring these sensors with OWFS will be easy, as for
> >> example for wind gust, I will loose some information.
> >>
> >> Then I'm thinking to use OWW.
> >>
> >> Could OWW operate on the same 1-wire bus than OWFS ? I use Hobby board
> hub
> >> 6-channels / serial interface.
> >>
> >> I have also the Midon Temp08 that could be used for all weather
> >> measurements and make them isolates on another 1-wire bus.
> >>
> >> What do you think ?
> >>
> >> Thomas
> >>
> >>
> >>
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