On Thu, May 08, 2014 at 08:15:23PM +0200, Jan Kandziora wrote:
> Am 08.05.2014 17:23, schrieb Chris Green:
> >
> > If I run owserver do I need owfs as well? As I said I'm very confused
> >
> The owfs program is the front-end for fuse.
>
> Any of the programs
>
> owfs
> owtftp
> owhttpd
> owserver
> ...
>
> and most of the language bindings (all not ownet) are mere frontends for
> the underlying owlib. They all link to owlib, which is the actual driver
> and controls the bus.
>
> You may start any of these programs separately, and each of it may use
> owlib to connect directly to a host adaptor or
>
> *and this is important*
>
> to an owserver on the same or another computer which connects to a host
> adaptor on that computer. Think of owserver as a "Onewire over IP Tunnel".
>
>
> But there is another use for owserver
>
> *and this is important.*
>
> You may *not* connect more than one owlib using process to the same host
> adaptor, concurrent access doesn't work reliably on that level. With
> USB, you may get the impression it works, but it doesn't. Don't try it,
> it's an endless source of frustration. Instead, use owserver to connect
> to the host adaptor and connect the other programs to owserver instead.
>
>
> So check if you have any process running which connects directly to the
> host adaptor and end that process before trying to debug anything.
>
I'm sorry but I really don't understand still.
How do I know "if you have any process running which connects directly
to the host adaptor"?
As I said I only actually *need* to see the results in /mnt/1-wire (or
whatever is defined in the owfs.conf file).
What isn't clear though is which processes *need* to be started and
which processes *may* be started. The owfs.conf file I'm using is
basically the one that gets installed when installing 'owfs' as a
package in Ubuntu. It would appear that there is something wrong with
what Ubuntu installs by default because it seems to start owserver,
owhttpd and owftdp but *not* owfs.
In your explanation above (thank you) are you saying that one can
either install/run one of owfs, owftpd, owhttpd just by itself *or* one
installs/runs owserver and then owfs, owftpd and/or owhttpd run as
'clients' of owserver?
My owfs.conf file is now:-
!server: server = localhost:4304
server: usb = all
mountpoint = /mnt/1-wire
allow_other
http: port = 2121
ftp: port = 2120
server: port = localhost:4304
(I've removed the comments)
This appears to be working with owserver run from /etc/init.d and with
owfs started manually:-
chris@beaglebone$ ps -ef | grep owfs
root 18418 1 0 17:16 ? 00:00:02 /usr/bin/owserver -c
/etc/owfs.conf --pid-file /var/run/owfs/owserver.pid
root 19228 1 0 17:54 ? 00:00:00 /usr/lib/owfs/owfs -c
/etc/owfs.conf
Is this working correctly now? Do I need both owserver and owfs? Can
I add owhttpd and/or owftpd?
I'm sorry I seem to be having so much difficulty understanding this
all, what is frustrating is that I had it all working reliably for
some weeks and then it all went wrong (and I didn't think I had
changed anything).
--
Chris Green
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