On Jan 13, 2008 4:36 PM, Patrik Andersson <[EMAIL PROTECTED]> wrote:
> Hello There!
>
> I have just recieved a prebuilt package with a USB DS9490 adapter, and two
> temperature sensors (ds18s20) on the 1-wire bus. I got it as a christmas
> present :)
>
Very generous.
>
> And I had planned that I should use owfs together with the temp sensors,
> and
> to logg and display temperature curves on a webpage.
>
Welcome.
>
> error reading information on service owman: No such file or directory
error: %post(owfs-man-2.7p2-1.i586) scriptlet failed, exit status 1
>
Interesting -- this is just the man pages.
> rpm -i owfs-shell-2.7p2-1.i586.rpm
> error reading information on service owshell: No such file or directory
> error: %post(owfs-shell-2.7p2-1.i586) scriptlet failed, exit status 1
>
Again interesting -- there are no dependencies for owshell -- it is 4
stand-alone programs.
>
> I have tried to read up on owfs on both owfs.org and on sourceforge
> project
> page.
>
> I managed to start the server like this
> "owfs -C -u -m /mnt/1wire" after I created the mountpoint
> directory /mnt/1wire, and did a "modprobe fuse" that is.
> and could read temperature like this.
> "cat /mnt/1wire/bus.0/10.53AE60010800/temperature"
>
> What is the temphigh & templow directory on the same level as temperature?
> I
> see mine is on 70 and 75, and how do I use those?
>
Well, the man pages are also on the website. In this case:
http://owfs.org/index.php?page=ds18s20
Specifically, each of the "files" represent properties of actual DS18S20
chip. This chip has high and low temperature thresholds for setting the
alarm state.
You can read and write (set) these thresholds with owfs in the very
intuitive manner of reading and writing to that "file".
e.g:
echo "15" > /mnt/1wire/bus.0/10.53AE60010800/templow
>
> I have created /etc/fuse.conf with a single line "user_allow_other" and
> after
> that I thought I should restart owfs, but I dont know how to do that in
> the
> right way, Im guessing killing the process isent the right way? "man
> owfs"
> doesent show how to do it. I tried to google how to stop owfs and read
> that "umount /path/mountpoint" should do it, Is this correct? It seems to
> work well when I had added my fuse.conf, because after that I could read
> temp
> as a normal user :)
>
Yup, that works the best.
>
> Also one of these rpms created startup scripts for me
> like "/etc/rc.d/rc5.d/K05owfs" & "/etc/sysconfig/owfs" should I replace
> the
> last files entry OPTIONS[0]="-d /dev/ttyS100" with OPTIONS[0]="-u" since I
> have a usb master (ds9490)?
>
Yes.
>
> Now It remains to try to use it to logg and show off curves. I have read
> briefly about some mentioning using mysql for storing the data, and I have
> heard from a forum that some peopl use cacti for showing data. And I have
> seen the temploggerd, that I thought perhaps I can download and read the
> instructions from.
>
> I will be intressted if you have some tip on how to store the temperature
> data
> (and time/date of course) in smart way, so that I't can be backuped and
> restored in a straight forward way, when I reinstall my OS wich I do every
> 6-12 months.
Well, cacti, and temploggerd are both based on rrdtool:
http://oss.oetiker.ch/rrdtool/
I'd advise looking at it and deciding if it interests you.
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