This is an interesting error -- I haven't seen it before.
For the record, the DS2405 isn't a bus master -- it's a one-pin quirky
switch.
I gather you are running the file system (owfs) and logging in remotely
with ssh.
There are a number of possibilities -- floating point endian errors might
be widely distributed like this. The catch is that temphigh and templow are
essentially constants unless you actively change them, so should give the
same value every time they are read. Even more, all these values are cached
briefly (15seconds for temperature by default) so a rapid re-read should
give the same value.
Perhaps other people have thoughts on this. I'm baffled.
If I needed to duplicate your setup, which bus-master and which owfs
version are you using?
Paul Alfille
On Fri, Apr 11, 2014 at 10:18 AM, Chris Green <c...@isbd.net> wrote:
> I have owfs running on a Beaglebone Black, apparently working OK. The
> 1-wire bus is connected via a DS2405 based USB device. It all
> *appears* to be working OK and I get the expected directories as
> follows:-
>
> /mnt/1-wire/05.4AEC29CDBAAB for the DS2405
> /mnt/1-wire/10.67C6697351FF for the DS18S20
>
> The 'type' file in each directory is correct but the temperature,
> temphigh and templow files in the DS18S20 directory just jump all ove
> the place:-
>
> root@beaglebone:/mnt/1-wire/10.67C6697351FF# more temperature
> 99.7799
> root@beaglebone:/mnt/1-wire/10.67C6697351FF# more temperature
> 5.40576
> root@beaglebone:/mnt/1-wire/10.67C6697351FF# more temperature
> 87.054
> root@beaglebone:/mnt/1-wire/10.67C6697351FF# more temperature
> 7.23288
> root@beaglebone:/mnt/1-wire/10.67C6697351FF# more temperature
> 0.416161
>
>
> The system is remote from me at the moment but I will be back there in
> the next few days. What should I check?
>
> --
> Chris Green
>
>
> ------------------------------------------------------------------------------
> Put Bad Developers to Shame
> Dominate Development with Jenkins Continuous Integration
> Continuously Automate Build, Test & Deployment
> Start a new project now. Try Jenkins in the cloud.
> http://p.sf.net/sfu/13600_Cloudbees
> _______________________________________________
> Owfs-developers mailing list
> Owfs-developers@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/owfs-developers
>
------------------------------------------------------------------------------
Put Bad Developers to Shame
Dominate Development with Jenkins Continuous Integration
Continuously Automate Build, Test & Deployment
Start a new project now. Try Jenkins in the cloud.
http://p.sf.net/sfu/13600_Cloudbees
_______________________________________________
Owfs-developers mailing list
Owfs-developers@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/owfs-developers
