Hi Mick,
Unfortunately, I have exactly the same problem here. Devices are missing
especially after some error occurs on a bus. Somebody believe that it is
owfs bug, but nobody knows how to fix it.
I tried to place some decoupling capacitors to reduce errors without great
luck. Now I just restart owserver every 3 hours and this makes my system
more stable.
Three is a thread here about construction USB - i2c - 1wire hub, but the
approach should be tested.
How many devices do you have on a bus?
On May 15, 2012 11:56 PM, "Mick Sulley" <m...@sulley.info> wrote:
> Sorry, yes that is important info:)
>
> Ubuntu 10.10 server
> owfs version: 2.8p13
> libow version: 2.8p13
> DS9490R USB busmaster
> Hobbyboards 6 channel hub
>
> The problem sensors are all on the same channel, but is is not all of
> the sensors on that channel.
>
> I used to use a DS9097U and don't remember seeing the problem then.
> That just packed up completely which is why I changed
>
> Cheers
> Mick
>
> On 15/05/12 20:38, Michael Markstaller wrote:
> > Which version, plattform and busmaster do you use?
> > Unfortunately this is hourly "normal" here..
> >
> > Michael
> > ________________________________________
> > Von: Mick Sulley [m...@sulley.info]
> > Gesendet: Dienstag, 15. Mai 2012 16:02
> > Bis: Owfs
> > Betreff: [Owfs-developers] Sensors go Missing!
> >
> > Hi,
> >
> > I occasionally get a sensor, or sometimes 2 or 3, that 'go missing'! I
> > scan all of them 2 - 3 times per minute and at the moment there is one
> > that has not been read for 12 hours. It is a DS18S20. If I look at
> > directories I can see its directory, and read all of the files, address,
> > alias, etc except for temperature, when I try it returns 'Could not open
> > the file' 'Unexpected error: Unknown reason'
> >
> > I have tried both the normal and uncached with the same result. All
> > sensors are powered. I saw it happen with 3 sensors a couple of weeks
> > back, out for a couple of days and then they came back again.
> >
> > Any ideas what can cause this?
> >
> >
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