On 02/11/2015 11:22 AM, Jan Kandziora wrote: > Am 11.02.2015 um 17:02 schrieb Lukasz Salwinski: >> >> I see... I've been religiously inserting ds2482 module. Does it mean >> I only need i2c_bcm2708 and i2c_dev modules ? Besides ds2482 (explicitly >> inserted) modprobe also returns >> > That's correct. Owfs can (and with --i2c= will) directly talk to all > DS2482 via /dev/i2c-X. > > > You can however use the --w1 option instead and Owfs will talk to the > host adaptor through the kernel driver. That has the advantage the > kernel sees the chips on the bus, too, and you can use the usual tools > to get their sampled data e.g. lmsensors for temperature readout. > > The biggest disadvantage of --w1 is that you can't tell on which bus a > chip exactly is, should you have more than one. The w1 system does not > supply that information IIRC. > > And it's a bit slower as the kernel driver polls the bus by itself for > new devices and thus, congests it with transfers that may be of no use > in your application. Using Owfs without --w1 does not do initiate any > onewire transfers when not told so by the applications. The difference > is negligible when you aren't connecting real-time I/O by onewire, however. > > Kind regards > > Jan
not loading ds2482 module did not help - the owfs filesystem is there: pi@raspberrypi ~ $ ls -al /mnt/1wire/ total 4 drwxr-xr-x 1 root root 8 Feb 12 07:21 . drwxr-xr-x 3 root root 4096 Feb 9 02:50 .. drwxr-xr-x 1 root root 8 Feb 12 07:21 bus.1 drwxr-xr-x 1 root root 8 Feb 12 07:21 settings drwxr-xr-x 1 root root 8 Feb 12 07:21 statistics drwxr-xr-x 1 root root 32 Feb 12 07:21 structure drwxr-xr-x 1 root root 8 Feb 12 07:21 system drwxr-xr-x 1 root root 8 Feb 12 07:21 uncached but 18b20 does not show up :o/ I'll try ds2483 once I've get them (within a couple of days)... I've tried both --i2c and --w1 - variants -it makes no difference. lukasz -- ------------------------------------------------------------------------- Lukasz Salwinski PHONE: 310-825-1402 UCLA-DOE Institute for Genomics & Proteomics FAX: 310-206-3914 UCLA, Los Angeles EMAIL: luk...@mbi.ucla.edu ------------------------------------------------------------------------- ------------------------------------------------------------------------------ Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
