gmane.comp.file-systems.owfs.devel

Re: OWFS Program Differences

Roberto Spadim — 2012-05-25T18:23:02

owserver - a protocol independent daemon, receive 'requests for file'
or 'write to file' or 'read directory' and return 'file contents'
owhttpd - runs a http protocol and comunicate with owserver or
directly to hardware
owshell - many programs to directly connect to hardware or owserver
owfs - a fuse filesystem, comunicate directly with hardware or owserver
ownet - comunicate with owserver
others - some implementations include owlib to comunicate with
hardware, and some comunicate with owserver

well... i~m using owserver+owhttpd, sometimes i only use owhttp, and
some times i use a owserver at a big server to connect to a rfc2217
client (serial-ethernet converter)

i don´t know if there´s a what´s better...

2012/5/25 p4trykx <p4trykx< at >o2.pl>:

Re: OWFS Program Differences

p4trykx — 2012-05-25T18:12:45

W dniu 25.05.2012 o 20:04 R_Have <RB.Haveman< at >gmail.com> pisze:


I use owserver with owshell programs. It seems to be little faster and  
consume less memory. I run on a WRT54G router where memory is about 16MB.
Owserver talks directly to the hardware and then other clients can talk to  
it. You can mount 1-wire as a file system on few other machines.

OWFS Program Differences

R_Have — 2012-05-25T18:04:00

I have been running a OWFS for about a year now, following some great
examples on the owfs website.
However I would like to know more about the full programs.  Currently I am
using owfs, but can anyone explain the differences between owfs, owhttpd,
and owserver, and situations where you would use one verses another.

Thanks R Haveman

Re: DS2890 support

Paul Alfille — 2012-05-25T17:10:48

We haven't withdrawn support for any devices, so it should work, though I
haven't actually tested the DS2890 recently.

Paul

On Thu, May 24, 2012 at 7:30 PM, Gregg Levine <gregg.drwho8< at >gmail.com>wrote:

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DS2890 support

Gregg Levine — 2012-05-24T23:30:41

Hello!
Paul despite the fact that the company Maxim considers the DS2890
technically obsolete and not ready for new designs, which also assumes
probably wrongly they are still being made, is OWFS still supporting
this part number?

Strangely enough the machine that's now running Linux there aren't any
actual serial ports, just a grouping of USB ports, and since I've used
the DS9097 adapters via a USB to RS232 adapter who swings properly, on
Windows as it happens. Its just that I've not tried to use the
programs that way yet on Linux.

And in case anyone is interested, on page 11 bottom half of the data
sheet for the LM334 constant current source once made by National
Semiconductor now made by Texas Instruments, there is an example of a
circuit who uses the part plus two resistors, one fixed and one that
is a variable resistor for trimming. As for how the One-Wire part
would be used there, in place of the regular variable resistor, I'm
not sure.
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"This signature foug

windowsce

Roberto Spadim — 2012-05-23T23:14:01

hi guys...
i was using some android tablets to develop some web sites
now i started some development at windows ce with .net framework

does anyone know if we can port owfs to .net? or maybe windows ce plataform?
just serial (usb-serial converters + ds2480b), rfc2217 and owserver bus
masters

Re: Release 2.8p15

Paul Alfille — 2012-05-23T11:11:05

Let me answer the easy ones:



http://nn.nn.nn.nn:3001/bus.0/uncached and http://nn.nn.nn.nn:3001/uncached
/bus.0 <http://nn.nn.nn.nn:3001/uncached%20/bus.0> and for that matter,
http://nn.nn.nn.nn:3001/bus.0/uncached/bus.0 ?


The order of "uncached" doesn't matter (technically is should be first but
the parsing logic is flexible since there is no ambiguity. It can't be a
device property, however, like 10.234234234/uncached )

The second question, /bus.0/bus.0 has to be a bus on an owserver. It is
never equivalent to just /bus.0

Paul
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Re: Hobby board LCD driver cannot write to lcdand simultaneously read the PIO

Guy — 2012-05-23T10:17:03


Yes Patryk, thanks again, the datasheet is clear:
When configured as RST, a LOW input sets all PIO outputs to the "off" state by
setting all bits in the PIO Output Latch State Register.
Just what I needed a full reset. My script is now perfectly working.
That's great
--
Guy






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help with hardware

Roberto Spadim — 2012-05-23T06:09:08

hi guys, anyone here use plc sdcd or another control hardware?
i´m using advantech plcs, (adam 5000 series)
does anyone know another good and cheap?

Re: Release 2.8p15

brucek — 2012-05-22T20:47:07

So far p15 seems much more stable (using an USB master)

But, I still can not change units in owhttpd

http://nn.nn.nn.nn:3001/settings/units?temperature_scale=f still returns the
unit as 'C'.

 

Also, what, if anything is different between
http://nn.nn.nn.nn:3001/bus.0/uncached and http://nn.nn.nn.nn:3001/uncached
<http://nn.nn.nn.nn:3001/uncached%20/bus.0>  /bus.0 and for that matter,
http://nn.nn.nn.nn:3001/bus.0/uncached/bus.0 ?

 

Thanks for the good work

Bruce

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Re: problems with writing data

Paul Alfille — 2012-05-22T17:07:53

Hi Arkhipenka,

If understand your findings, you've found that you get different results on
sparc64 and i386.

I assume that you're using linux rather than openSolaris (or whatever it's
called now).

There are 3 different parts here. Fuse, owfs and libusb. All might be
problematic on a different architecture.

Can we try eliminating fuse for the time being with either owhttpd or
owserver/owwrite ?

Paul Alfille

On Tue, May 22, 2012 at 12:43 PM, Arkhipenka Stanislau <dise.logo< at >mail.ru>wrote:

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problems with writing data

Arkhipenka Stanislau — 2012-05-22T16:43:57

Hello.
Could you, please, help me to solve a problem:
im trying to use owfs on SPARC64 achitecture.
Im using debian squeeze. I compiled owfs from sources owfs-2.5p15:
./configure --enable-debian  --enable-usb
make
make install 

(also tried ./configure --build=sparc64-linux target=sparc64-linux --enable-
debian --enable-usb)
Im starting owfs server by command:
/opt/owfs/bin/owfs -u --allow_other -m 1wire --error_level=0 --
mountpoint="/mnt/1wire"
and it starts sucsessfuly, but when im trying to write data "echo 1 > 
/mnt/1wire/12.4A7A80000000/PIO.A". there r no resoults from my actions.
i mean when after this im doing cat /mnt/1wire/12.4A7A80000000/PIO.A i resive 
0.
I tried to do the same actions on amd64 and on i386 and it works fine. 
I tried to set --error_level=5 and then compare loges from SPARC64 and amd64 - 
they turned the same (i mean that pid, machine name and adresses are different, 
but the other information is the same).

P.S. im using DS9490R

sorry for my english.

---------------------------

Re: Release 2.8p15

Michael Markstaller — 2012-05-21T23:38:35

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On 21.05.2012 22:49, Eloy Paris wrote:

That would indeed be the best solution!
I'm playing with a HW using openembedded and systemd right now, where
it even gets worse (and please note my post
http://www.mail-archive.com/owfs-developers< at >lists.sourceforge.net/msg08743.html)

- -> I think it would be best to get the avahi/zeroconf-stuff working as
perfect as possible, there are still some glitches (where I'd love to
help on working out why!) - that's neat and smooth, if working it's
perfect, but with delays of some seconds we run into trouble (imagine
a user holding a ibutton on -waiting for the door to open..)

Greets, Michael
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Re: Release 2.8p15

Michael Markstaller — 2012-05-21T23:20:59

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On 21.05.2012 03:58, Paul Alfille wrote:

Really, IMHO the greatest and best ever since 2.7p34, in terms of
stability, not features; no complaints with the DS9490 USB-masters on
x86(*), this is IMHO a major improvement in stability, I'm testing since
the commit is out on several systems without any problem (and much
better than my quirks I did since then)
- -> Thanks!


Michael

*) Though I still see some problems on OpenWRT/MIPS24k but thats a
really different story, I'll look into that deeper (and as deep as I
can!) the next days - as it makes sense now with knowing the basics on
the DS9490 are working fine.

P.S.: libow is getting bigger and bigger which gets to a problem on thin
boxes with 4MB Flash where ~200-400k are left for such things, would it
make sense to introduce configure/compile-time switches to exclude "big"
libs (top 3 currently ow_2760.o, ow_bae.o, ow_eds.o) on demand(?)
I'd offer to provide a patch ;)
Not to say I dislike any of these, I i.e

Re: Release 2.8p15

Eloy Paris — 2012-05-21T20:49:22

Hi Paul,

On 05/21/2012 04:36 PM, Paul Alfille wrote:


[...]

Okay, yes, that makes sense. I'll see what I can come up with in terms 
of an Ubuntu Upstart script. The one I have right now definitely does 
not work because of the synchronization problem we're discussing.


Definitely another option. Perhaps add configuration options to the 
clients so they don't fail/quit when they cannot contact owserver and 
instead attempt a connection every X seconds?

Cheers,

Eloy Paris.-


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Re: Release 2.8p15

Paul Alfille — 2012-05-21T20:36:09

You summarized the problem well. Synchronizing the start of owserver and
it's clients can be problematic.

As for suspending the boot process -- the whole scheme can be done in the
background.

I.e run this script in the background:

#!/bin/sh
# script to start the 1-wire processes
# with delay for owserver

# owserver address
address=""
/opt/owfs/bin/owserver --fake=10 -p $address

# wait for owserver to accept connections:
e="1"
while [ $e -ne 0 ] ; do
  /opt/owfs/bin/owexist -q $address
  e=$?
  sleep 1
done

/opt/owfs/bin/owhttpd -s $address -p 4444
/opt/owfs/bin/owfs      -s $address -m /mnt/1wire --allow_other

---------------------------------

I guess another approach would be to allow owhttpd and owfs to function
even if they can't yet connect to owserver.


On Mon, May 21, 2012 at 3:37 PM, Eloy Paris <peloy< at >chapus.net> wrote:

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Re: Release 2.8p15

Eloy Paris — 2012-05-21T19:37:00

On 05/21/2012 12:03 PM, Paul Alfille wrote:


Can someone summarize what this problem is?

I know that in my case owserver takes a while to start. It sounds like 
the same problem as "late-starting owservers" but I cannot seem to find 
the February 1st report that Klas mentions.

Based on Paul's comment below, I take it that the problem has been 
identified and will be fixed in the next release?

This has been a problem for me because my owfs start script cannot 
execute owserver and owfs in succession because owserver goes daemon 
immediately but does not really start servicing requests, and then owfs 
fails to find a working owserver and then quits. So, after each reboot I 
need to run owfs manually. Fortunately I don't restart my server often.

I'll look into that owexist trick that Paul mentions, though it does not 
seem to be perfect because it would suspend the boot process for a 
little bit.

Cheers,

Eloy Paris.-


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Re: Release 2.8p15

Pascal Baerten — 2012-05-21T16:07:46

yes, and with latest v9 bae0910 firmware a new adc configuration bit allows
to sample at 10bit and an adc10 property have been added.
Previous bae0910 firmwares are still supported with 2.8p15

v9 firmware is here
http://www.brain4home.eu/downloads/firmware910_20120504.bin
and updated doc is here:
http://www.brain4home.eu/downloads/BAE0910-datasheet.pdf

Pascal


2012/5/21 klas englund <tcmsklas< at >gmail.com>

Re: Release 2.8p15

Paul Alfille — 2012-05-21T16:03:05

Good news and bad news on the late-starting owservers

There is a new command: owexist
It needs an update (even from the latest release) to
module/owshell/src/c/owexist.c
but you can then run:

address="";e="1"; while [ $e -ne 0 ] ; do /opt/owfs/bin/owexist -q $address
; e=$? ; sleep 1 ; done

Which will loop until owserver appears.
address="" for default owserver localhost:4304 address

You can also wait for the next release, which shouldn't be as long a wait.

Paul Alfille

On Mon, May 21, 2012 at 8:51 AM, klas englund <tcmsklas< at >gmail.com> wrote:

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Re: Release 2.8p15

klas englund — 2012-05-21T12:51:55

What about the issue about finding "late starting" owservers, reported
by me on the 1st Februari?

Klas E

2012/5/21, Paul Alfille <paul.alfille< at >gmail.com>:

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Re: DS2483 Support

Stuart Poulton — 2012-05-21T12:19:00

The first one, so bus.0

On the other thread, I have temp sensors working with the DS2483.

Stuart

On 21/05/12 13:06, Achim Scheidl wrote:


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