On Fri, May 18, 2012 at 3:10 PM, Stuart Poulton <webw...@gmail.com> wrote: > Hi, > > This is using the 3v3 from the RPi, I've not got the required parts to do > level conversion but I have a level convertor on order.
This means, that 1-wire bus is powered by 3.3V, which can slow down communication on long lines. > > Here's the uncached reading again > > root@berry:~# time /opt/owfs/bin/owread > /uncached/bus.1/28.5B8A57030000/temperature > 20.5625 > real 0m1.964s > user 0m0.010s > sys 0m0.010s > > > root@berry:~# time /opt/owfs/bin/owread > /uncached/bus.11/28.52DE99000000/temperature > 19.8125 > real 0m1.215s > user 0m0.010s > sys 0m0.000s > > Now time difference is not so high. For sure if you convert to 5 volt the difference will be negligible. > Top is the DS2482-100, bottom the USB > > Is there any way to see the 'tree' with owdir ? Similar to the output from > lsusb -v > > Cheers > > Stuart > > On 18 May 2012, at 11:54, Ivan Lisenkov wrote: > >> Hi Stuart, >> >> Do you power DS2482-100 by 3.3V or 5V? >> >> Also it is better to determinate what bus you are reading e.g. >> /uncached/bus.0/28.52DE99000000/temperature >> >> >> Best Regards, >> >> Ivan, PhD >> >> >> >> On Fri, May 18, 2012 at 2:39 PM, Stuart Poulton <webw...@gmail.com> wrote: >>> Hi, >>> >>> Ok, here goes >>> >>> root@berry:~# time /opt/owfs/bin/owread >>> /uncached/28.5B8A57030000/temperature >>> 21 >>> real 0m4.684s >>> user 0m0.010s >>> sys 0m0.000s >>> >>> root@berry:~# time /opt/owfs/bin/owread >>> /uncached/28.5B8A57030000/temperature >>> 21 >>> real 0m1.623s >>> user 0m0.000s >>> sys 0m0.010s >>> >>> >>> The above are DS18B20s on the DS2482-100, and below a DS18b20 on a 1-wire >>> USB reader >>> >>> root@berry:~# time /opt/owfs/bin/owread >>> /uncached/28.52DE99000000/temperature >>> 19.6875 >>> real 0m1.586s >>> user 0m0.000s >>> sys 0m0.000s >>> >>> I'm now running with 2 off USB, and 2off i2c adaptors all of the same RPi, >>> obviously very much idea with nothing more than 1m away from the Pi >>> >>> root@berry:~# /opt/owfs/bin/owdir >>> /81.A6B821000000 >>> /28.52DE99000000 >>> /81.BA4124000000 >>> /28.5B8A57030000 >>> /28.BF8757030000 >>> /bus.11 >>> /bus.9 >>> /bus.8 >>> /bus.7 >>> /bus.6 >>> /bus.5 >>> /bus.4 >>> /bus.3 >>> /bus.2 >>> /bus.1 >>> /bus.0 >>> /uncached >>> /settings >>> /system >>> /statistics >>> /structure >>> /simultaneous >>> /alarm >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> On 17 May 2012, at 22:16, Patryk wrote: >>> >>>> Dnia 17.05.2012 o 23:05 Stuart Poulton <webw...@gmail.com> Stuart Poulton >>>> <webw...@gmail.com> napisał(a): >>>> >>>>> Success, I have OWFS working on a RaspberryPi talking to both an >>>>> DS2482-100, and DS2482-800. >>>>> >>>>> Full details can be found on my blog: http://go.je/iire >>>>> >>>>> This means that I can now look to finalise details of the Pi-Wire >>>>> breakout boards described here http://go.je/18v >>>>> >>>>> I'll also be looking to test the DS2483 in the next few days. >>>> >>>> >>>> Great news! >>>> >>>> I just received mine Raspi fro RS Components:) >>>> But I'm not at home son I can't wait to go back. >>>> Here's a i2c level converted http://www.headfuzz.co.uk/node/46 >>>> >>>> Could You test how long it takes to read DS18B20 on DS2482-800? With >>>> Atmega i2c-usb converter I got ~3 seconds >>>> >>>> -- >>>> p4trykx >>>> >>>> ------------------------------------------------------------------------------ >>>> Live Security Virtual Conference >>>> Exclusive live event will cover all the ways today's security and >>>> threat landscape has changed and how IT managers can respond. Discussions >>>> will include endpoint security, mobile security and the latest in malware >>>> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ >>>> _______________________________________________ >>>> Owfs-developers mailing list >>>> Owfs-developers@lists.sourceforge.net >>>> https://lists.sourceforge.net/lists/listinfo/owfs-developers >>> >>> >>> ------------------------------------------------------------------------------ >>> Live Security Virtual Conference >>> Exclusive live event will cover all the ways today's security and >>> threat landscape has changed and how IT managers can respond. Discussions >>> will include endpoint security, mobile security and the latest in malware >>> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ >>> _______________________________________________ >>> Owfs-developers mailing list >>> Owfs-developers@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/owfs-developers >> >> ------------------------------------------------------------------------------ >> Live Security Virtual Conference >> Exclusive live event will cover all the ways today's security and >> threat landscape has changed and how IT managers can respond. Discussions >> will include endpoint security, mobile security and the latest in malware >> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ >> _______________________________________________ >> Owfs-developers mailing list >> Owfs-developers@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/owfs-developers > > > ------------------------------------------------------------------------------ > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > _______________________________________________ > Owfs-developers mailing list > Owfs-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/owfs-developers ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
