On Sat, Feb 04, 2012 at 10:18:26PM -0500, Paul Alfille wrote: > Well, it sounds like the USB reconnect (after errors) is not putting the > line into the correct bus timing mode. Let me investigate.
While I got my DS9097 and DS2490 from hobby-boards, I don't think my findings are specific to their design but more specific to the chip. I have pretty long network in my house, using cat-5 cable and after what I reported earlier, I tried my USB DS2490 to run my bus (that goes through a hub, also from hobby-boards). Well, while I found that the DS9097 plugged into a keyspan USB/serial adapter was having glitches when apparently interrupts were delayed when my server was busy with high speed disk to disk copies, I found out that the DS2490, contrary to what I expected, is actually worse. The DS2490, when my server is not busy, was routinely causing owfs to miss some devices on my full bus polls every minute. I tried it over a week and I would get 10-20 errors per day. I then put the DS9097 back via the keyspan adapter, and while I don't understand why it would be more reliable, especially with always uncertain voltage from a usb-serial adapter, my bus is 100% stable again: no more daily poll errors. I can't quite explain why, but I thought I'd report it. Marc > Paul > > On Sat, Feb 4, 2012 at 9:57 PM, Marc MERLIN <[email protected]> wrote: > > > Howdy, > > > > I've been using both a DS9097U via USB serial adapter and a USB DS2490. > > Both work, until I put a hard drive on my USB bus, and the drive > > occasionally delays the USB bus or causes issues with other usb devices. > > > > Problem is that owfs just plain craps out when that happens and doesn't > > quite seem to recover on its own (or at least not timely). > > > > Have others seen this? > > > > Is there a 1-wire master adapter I can try that is more resistent to these > > problems? > > > > Thanks, > > Marc > > -- > > "A mouse is a device used to point at the xterm you want to type in" - > > A.S.R. > > Microsoft is to operating systems .... > > .... what McDonalds is to gourmet > > cooking > > Home page: http://marc.merlins.org/ > > > > > > ------------------------------------------------------------------------------ > > Try before you buy = See our experts in action! > > The most comprehensive online learning library for Microsoft developers > > is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, > > Metro Style Apps, more. Free future releases when you subscribe now! > > http://p.sf.net/sfu/learndevnow-dev2 > > _______________________________________________ > > Owfs-developers mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/owfs-developers > > > ------------------------------------------------------------------------------ > Try before you buy = See our experts in action! > The most comprehensive online learning library for Microsoft developers > is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, > Metro Style Apps, more. Free future releases when you subscribe now! > http://p.sf.net/sfu/learndevnow-dev2 > _______________________________________________ > Owfs-developers mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/owfs-developers -- "A mouse is a device used to point at the xterm you want to type in" - A.S.R. Microsoft is to operating systems .... .... what McDonalds is to gourmet cooking Home page: http://marc.merlins.org/ ------------------------------------------------------------------------------ Virtualization & Cloud Management Using Capacity Planning Cloud computing makes use of virtualization - but cloud computing also focuses on allowing computing to be delivered as a service. http://www.accelacomm.com/jaw/sfnl/114/51521223/ _______________________________________________ Owfs-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/owfs-developers
