Re: [Owfs-developers] strange DS2762 persistence

2014-04-30 Thread Vajk Fekete
So it receives 7V on a separate line. Does it also have a separate line for GND? Even if so, the power will share the gnd line that is used for communications. Vajk On Wed, Apr 30, 2014 at 10:26 AM, Ors Tiszay wrote: > Hi Paul, > > You're probably right about the powered slave thing; never occ

Re: [Owfs-developers] strange DS2762 persistence

2014-04-30 Thread Ors Tiszay
Hi Paul, You're probably right about the powered slave thing; never occurred to me, but this is indeed the only powered slave on the bus at the moment. But then on seconds thought this one does not run off its own power supply, but relies on the HobbyBoards 8p hub's unregulated (pin 7) instead, an

Re: [Owfs-developers] strange DS2762 persistence

2014-04-29 Thread Paul Alfille
Hi Ors, After extensive testing I have mixed news. I can replicate your findings -- the branches don't update and look confused, but only with powered slaves. in this case I'm using the Hobbyboards UVI sensor. Using any number of passive devices works wonderfully. In fact I tested an extensive n

Re: [Owfs-developers] strange DS2762 persistence

2014-04-18 Thread Ors Tiszay
Hi Paul, Yes, it's been sitting on my desk for a few days now. And still: # ls -al /mnt/owfs/1F.F96B0800/aux/ total 0 drwxr-xr-x 1 root root 8 Apr 16 09:34 . drwxrwxrwx 1 root root 8 Apr 18 10:10 .. # ls -la /mnt/owfs/1F.F96B0800/aux/30.4CF9B812/ total 0 drwxrwxrwx 1 root root 8 A

Re: [Owfs-developers] strange DS2762 persistence

2014-04-16 Thread Paul Alfille
Let me confirm that you physically disconnected the DS2762 rather than just external power? On Apr 16, 2014 4:05 AM, "Ors Tiszay" wrote: > Hi, > > I have owfs running on a Gumstix Overo Earth, with a DS9490 bus master, > which in turn is connected to a Hobby-Boards DS2409-based 8 channel hub > (b

Re: [Owfs-developers] strange DS2762 persistence

2014-04-16 Thread Jan Kandziora
Am 16.04.2014 18:04, schrieb Ors Tiszay: > > I understand that search ROM is costly, but: > > 1. on reading uncached, owfs should, like you say, update its view on the > bus. Nevertheless, this does not seem to happen: > > # ls -la /mnt/owfs/uncached/1F.F96B0800/aux/30.4CF9B812/ > > # l

Re: [Owfs-developers] strange DS2762 persistence

2014-04-16 Thread Ors Tiszay
Hi Jan, I understand that search ROM is costly, but: 1. on reading uncached, owfs should, like you say, update its view on the bus. Nevertheless, this does not seem to happen: # ls -la /mnt/owfs/uncached/1F.F96B0800/aux/30.4CF9B812/ total 0 drwxrwxrwx 1 root root 8 Apr 16 17:42 . drwxr

Re: [Owfs-developers] strange DS2762 persistence

2014-04-16 Thread Jan Kandziora
Am 16.04.2014 11:12, schrieb Ors Tiszay: > Nor should the file system one the device is disconnected, but someone will > correct me on this if wrong. > "Search ROM" is a costly operation on most host adapters (with the noteable execption of the DS9490, which handles it semi-automatically) so owfs

Re: [Owfs-developers] strange DS2762 persistence

2014-04-16 Thread Ors Tiszay
Nor should the file system one the device is disconnected, but someone will correct me on this if wrong. br, Ors On Wed, Apr 16, 2014 at 11:08 AM, Ors Tiszay wrote: > Hi Ian, > > Tried that too: > > # cat /mnt/owfs/uncached/1F.F96B0800/aux/30.4CF9B812/current > -7.8125E-05 > > On the

Re: [Owfs-developers] strange DS2762 persistence

2014-04-16 Thread Ors Tiszay
Hi Ian, Tried that too: # cat /mnt/owfs/uncached/1F.F96B0800/aux/30.4CF9B812/current -7.8125E-05 On the other hand, the cache should not persist for 3+ days, I believe. br, Ors On Wed, Apr 16, 2014 at 10:47 AM, Jan Kandziora wrote: > Am 16.04.2014 10:04, schrieb Ors Tiszay: > > > >

Re: [Owfs-developers] strange DS2762 persistence

2014-04-16 Thread Jan Kandziora
Am 16.04.2014 10:04, schrieb Ors Tiszay: > > But reading the DS2762 as if it was still connected: > > # cat /mnt/owfs/1F.F96B0800/aux/30.4CF9B812/current > You are not reading the DS2762 but the cache. Do a # cat /mnt/owfs/uncached/1F.F96B0800/aux/30.4CF9B812/current instead. K

[Owfs-developers] strange DS2762 persistence

2014-04-16 Thread Ors Tiszay
Hi, I have owfs running on a Gumstix Overo Earth, with a DS9490 bus master, which in turn is connected to a Hobby-Boards DS2409-based 8 channel hub (bought years ago when the DS2409 was still around, wish they still were). The bus then branches out to several directions, carrying a total of ~10 se