w1 is the linux kernel system for 1-wire. It grabs certain of the bus
masters (the USB one in particular). As root, OWFS will unload the ds2490
kernel module and use libusb to connect. You can unload it yourself, or
suppress it's loading with udev magic.
That actually might be part of the problem, and an interesting issue.
Perhaps the USB line is getting reset (bad connection, other error, ...)
Although owfs tries to reconnect to the DS490, it doesn't try unloading the
module again. I'll investigate.
Note that we are nearly done building the owfs-w1 bridge which will make
using w1 as a bus master possible.
Paul Alfille
On Wed, Jan 14, 2009 at 5:32 AM, William Brown <[email protected]>wrote:
> Which is the w1 kernel driver? Why would it get unloaded from the
> previous day? restart?
>
> I had intermittent problems with reading my 150 foot 1wire bus until I
> connected the 12V line to a car battery. I burnt up one 12 VDC 500 ma
> transformer hence the battery fused for 1 amp.
>
> Michael Markstaller wrote:
> > 2.6.26 (Debian lenny), btw. the w1 kernel driver is not loaded..
> >
> > Michael
> >
> >
> >> From: William Brown [mailto:[email protected]]
> >> Sent: Wednesday, January 14, 2009 12:59 AM
> >> To: [email protected]
> >> Subject: Re: [Owfs-developers] Problem with DS9490R on longer networks
> >>
> >> I too have started getting similar problems on not so long network.
> >> Which Linux are you using? I'm on Ubuntu 8.10 with OWFS 2.7p4
> >>
> >
> >
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