hum, maybe you have small cable length in this box did you solved the
eletric problem?
2013/2/3 Mick Sulley <[email protected]>
> OK it ran overnight, 4338 cycles of the code, 4338 good reads on every
> sensor. A reliable network again!!! This was using the Sheepwalk RPI2,
> which is my preferred option. I will try again with the USB adapter but
> I am confident that will be OK as well.
>
> It seems that the problem was with my 2 X 2 channel I/O box. Ironically
> when that was connected I had less than 1% errors on that, but more than
> 25% errors on other devices.
>
> Mick
>
> On 03/02/13 01:05, Mick Sulley wrote:
> > I think I am getting somewhere at last!!!
> >
> > I tried running with a single temperature sensor - 1000 cycles fine
> > Tried with 5 temperature sensors - fine
> > 5 temp + 8channel I/O - fine
> > Kept adding devices and it failed when I added a box with 2 X 2 port
> > I/O, a few no reads on that device but many no-reads on temperature
> > sensors. I have now removed that and added a box with a single 2
> > channel I/O. The 2 channel boxes are home brew based upon DS2406
> > chips.
> >
> > I am now assuming that there is a problem with my 2 X 2channel box
> >
> > Current test -
> > 5 - temperature
> > 3 - 8 channel I/O Hobbyboards
> > 1 - 2 channel I/O DS2406 based
> > 1 - Humidity sensor
> >
> > 200 cycles so far and no no-reads, so looking good. It is way past my
> > bedtime now so I will leave it running overnight.
> >
> > Cheers
> > Mick
> >
> > On 02/02/13 22:14, Guy COLIN wrote:
> >> Mick Sulley<mick<at> sulley.info> writes:
> >>
> >>> Hi Guy,
> >>> I am testing owfs on a Pi as well. I have 6 temperature sensors and 3
> 8
> >>> channel I/O boards and I continually read all of them, takes about 9
> >>> seconds to get around them all. All of the files in /statistics/errors
> >>> are zero, indicating no errors, however the code I am running logs each
> >>> time it tries to read and it is not able to, and I am seeing a
> >>> considerable number of no reads. Investigations on going but it does
> >>> seem that there is a much higher incidence of no reads with temperature
> >>> sensors than with I/O.
> >>>
> >>> I started the tests using a Sheepwalk Electronics RPI2 adapter, which
> is
> >>> specifically designed for the Pi, and I suspected that this may be the
> >>> problem and so switched to a DS9490 USB adapter, but the no reads
> continue.
> >>>
> >>> Do you know if you are experiencing no reads?
> >>>
> >>> Cheers
> >>> Mick
> >>>
> >>> On 01/02/13 15:33, Guy COLIN wrote:
> >>>> Just to give information about owfs running on Raspberry pi, with
> latest
> >>>> Raspbian and owfs from the repository of the distribution.
> >>>> Everything is just perfect:
> >>>> For testing purpose, I ran it for 2 weeks continuously on a USB
> DS9490B
> >>>> adaptor and 1 temperature sensor DS1820B polling readings every 5
> minutes
> >>>> without any errors, everything perfectly stable (some reports were
> done here
> >>>> about instability on USB)
> >>>> I have now my home automation system running on the Raspberry pi
> onboard
> >>>> serial port ttyAMA0 to a 1wire 6 ports hub (5 Temp; 1 Humid;
> >>>> 1LCD+3push buttons; 1 8xI/O board to drive the central heating boiler)
> >>>> from January 5 without any errors. I poll data every 5 minutes, I
> have no
> >>>> error in my own logs (no measure out of range), and no errors in
> >>>> /mnt/1wire/statistics/errors.
> >>>> Everything is fine and perfect.
> >>>> My site is visible here http://gcolin.hd.free.fr/
> >>>> Thanks again to owfs development team
> >>>> --
> >>>> Guy
> >>>>
> >>>
> ------------------------------------------------------------------------------
> >>> Everyone hates slow websites. So do we.
> >>> Make your web apps faster with AppDynamics
> >>> Download AppDynamics Lite for free today:
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> >>>
> >> Hi Mick,
> >>
> >> No I'm not experiencing any no read.
> >> I read all my devices every 5 minutes, and log any inconsistent value.
> The no
> >> read will be recorded and reported in my graphics trends with a grey
> color. It
> >> happen sometimes when I disconnect the 1wire network. I am now running
> a home
> >> made rs232 adaptor based on MAX3232CPE similar to
> >> thishttp://codeandlife.com/2012/07/01/raspberry-pi-serial-console-with-
> >> max3232cpe/
> >> This adaptor is connected to a 1wire hobbyboard 6 chanel hub
> >> Before the Raspberry I had an old PC Pentium1 233MHz and 2 home made
> serial
> >> port/1wire adaptors and fom times to times I had inconsistent values
> recorded,
> >> usualy 85 degres for the temp (which means short circuit on temp sensor
> I
> >> believe) and I logged these values in my own logs. I used to have 3 or
> 4 days
> >> without errors then several a day, let's say an average of 2 a day. But
> now with
> >> the Raspberry and this config: Zero error since January 5.
> >>
> >> Your config is different since you use a I2C to 1wire, but you stil
> have no
> >> reads with a usb adaptor... I don't know
> >> May be your software.
> >> I have run on usb adaptor with 1 temp sensor for 2 weeks without errors.
> >> Are you running the latest Raspbian with owfs from the Raspbian
> repository?
> >>
> >> Good day
> >> --
> >> Guy
> >>
> >>
> >>
> >>
> >>
> ------------------------------------------------------------------------------
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> >> Make your web apps faster with AppDynamics
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> >> [email protected]
> >> https://lists.sourceforge.net/lists/listinfo/owfs-developers
> >
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>
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--
Roberto Spadim
SPAEmpresarial
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