Re: [Owfs-developers] DS9490R 1-wire bus short circuit.
Am 14.04.2014 14:44, schrieb vermus: > vermus wrote >> ps. Can you give a bus voltage from DS9490R ? In my case it ~ 1 Volt (3 >> and 4 pin), but AFAIK sensors on parasite power needs 3-5V... > > i was right.. > > "Typically, 1-Wire slave devices operate over the voltage range of 2.8V > (min) to 5.25V (max)." > > Something wrong with my DS9490R. > Then maybe you don't have a shorted diode in the DS9503, but a burned series resistor in the same chip. That's a common mode of failure, too, I had them a while ago. This problem is usually created by connecting something to the Pin 2 GND of the DS9490R. -> CHECK YOUR CABLING, Pin 1 and 2 of the DS9490 shouldn't be connected to anything on the bus. Kind regards Jan -- Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. Written by three acclaimed leaders in the field, this first edition is now available. Download your free book today! http://p.sf.net/sfu/NeoTech ___ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
Re: [Owfs-developers] DS9490R 1-wire bus short circuit.
vermus wrote > ps. Can you give a bus voltage from DS9490R ? In my case it ~ 1 Volt (3 > and 4 pin), but AFAIK sensors on parasite power needs 3-5V... i was right.. "Typically, 1-Wire slave devices operate over the voltage range of 2.8V (min) to 5.25V (max)." Something wrong with my DS9490R. -- View this message in context: http://owfs-developers.1086194.n5.nabble.com/DS9490R-1-wire-bus-short-circuit-tp10564p10572.html Sent from the OWFS Developers mailing list archive at Nabble.com. -- Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. Written by three acclaimed leaders in the field, this first edition is now available. Download your free book today! http://p.sf.net/sfu/NeoTech ___ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
Re: [Owfs-developers] DS9490R 1-wire bus short circuit.
Off the top of my head: Link-USB (ibuttonlink.com) USB9097 http://www.ebay.com/itm/PCsensor-1-Wire-adapter-thermometer-replace-DS9097-DS9490-NEW-/281307951738?pt=US_Weather_Meters&hash=item417f42b27a The latter uses the serial protocol and so is slightly slower for large directories. The LINK is probably pretty close, buty I haven't checked. It hardly matters, 1-wire isn't that fast. On Mon, Apr 14, 2014 at 7:32 AM, vermus wrote: > Paul Alfille-2 wrote > > Page 5 of the datasheet ( > > http://datasheets.maximintegrated.com/en/ds/DS9490-DS9490R.pdf) has a > > schematic including the DS9503 diode that might be a problem. > > > > On the other hand, it's probably not worth your time chasing this down, > > rather than just buying another 9490R. > > > > This doesn't seem to be too common an occurrence -- I have DS9490Rs that > > have been in service for nearly a decade. You could always try an > > alternative USB 1-wire adapter, though they won't be quite as fast. > > Yes, as i said before, i tested this DS9503. > > Hmm, what alternative adapter? Can you give link on ebay or aliexpress? > > And what does that mean "won't be quite as fast"? 1-wire bus speed? > > Thanks! > > ps. Can you give a bus voltage from DS9490R ? In my case it ~ 1 Volt (3 and > 4 pin), but AFAIK sensors on parasite power needs 3-5V... > > > > -- > View this message in context: > http://owfs-developers.1086194.n5.nabble.com/DS9490R-1-wire-bus-short-circuit-tp10564p10570.html > Sent from the OWFS Developers mailing list archive at Nabble.com. > > > -- > Learn Graph Databases - Download FREE O'Reilly Book > "Graph Databases" is the definitive new guide to graph databases and their > applications. Written by three acclaimed leaders in the field, > this first edition is now available. Download your free book today! > http://p.sf.net/sfu/NeoTech > ___ > Owfs-developers mailing list > Owfs-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/owfs-developers > -- Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. Written by three acclaimed leaders in the field, this first edition is now available. Download your free book today! http://p.sf.net/sfu/NeoTech___ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
Re: [Owfs-developers] DS9490R 1-wire bus short circuit.
Paul Alfille-2 wrote > Page 5 of the datasheet ( > http://datasheets.maximintegrated.com/en/ds/DS9490-DS9490R.pdf) has a > schematic including the DS9503 diode that might be a problem. > > On the other hand, it's probably not worth your time chasing this down, > rather than just buying another 9490R. > > This doesn't seem to be too common an occurrence -- I have DS9490Rs that > have been in service for nearly a decade. You could always try an > alternative USB 1-wire adapter, though they won't be quite as fast. Yes, as i said before, i tested this DS9503. Hmm, what alternative adapter? Can you give link on ebay or aliexpress? And what does that mean "won't be quite as fast"? 1-wire bus speed? Thanks! ps. Can you give a bus voltage from DS9490R ? In my case it ~ 1 Volt (3 and 4 pin), but AFAIK sensors on parasite power needs 3-5V... -- View this message in context: http://owfs-developers.1086194.n5.nabble.com/DS9490R-1-wire-bus-short-circuit-tp10564p10570.html Sent from the OWFS Developers mailing list archive at Nabble.com. -- Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. Written by three acclaimed leaders in the field, this first edition is now available. Download your free book today! http://p.sf.net/sfu/NeoTech ___ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
Re: [Owfs-developers] DS9490R 1-wire bus short circuit.
Page 5 of the datasheet ( http://datasheets.maximintegrated.com/en/ds/DS9490-DS9490R.pdf) has a schematic including the DS9503 diode that might be a problem. On the other hand, it's probably not worth your time chasing this down, rather than just buying another 9490R. This doesn't seem to be too common an occurrence -- I have DS9490Rs that have been in service for nearly a decade. You could always try an alternative USB 1-wire adapter, though they won't be quite as fast. Paul On Mon, Apr 14, 2014 at 12:40 AM, vermus wrote: > Paul Alfille-2 wrote > > For reference I've included the initialization sequence for a functioning > > DS9490R: > > > > DEBUG MODE > > libow version: > > 2.9p3 > > > > . > > > > CONNECT: ow_usb_cycle.c:(68) Bus master found: 1:6 > > DEFAULT: ow_usb_msg.c:(295) Opened USB DS9490 bus master at 1:6. > >CALL: ow_parsename.c:(99) path=[] > >CALL: ow_parsename.c:(99) path=[/uncached/bus.0] > > DEBUG: ow_dir.c:(65) path=/uncached/bus.0 > >CALL: ow_dir.c:(100) path=/uncached/bus.0 > >CALL: ow_parsename.c:(99) path=[/uncached/bus.0/interface] > > DEBUG: ow_usb_cycle.c:(125) Callback on /uncached/bus.0/interface > > DEBUG: ow_parsename.c:(62) /uncached/bus.0/interface > > DEBUG: ow_search.c:(32) Start of directory path=/uncached/bus.0 > > device=00 > > 00 00 00 00 00 00 00 > > DEBUG: ow_ds9490.c:(607) Index 0 > > DEBUG: ow_select.c:(66) Selecting a path (and device) > > path=/uncached/bus.0 SN=00 00 00 00 00 00 00 00 last path=00 00 00 00 00 > > 00 > > 00 00 > > DEBUG: ow_select.c:(79) Continuing root branch > > DEBUG: ow_ds9490.c:(495) DS9490 RESET. changed 15, flex: 1 > >DATA: ow_ds9490.c:(942) set flexible speed > > DEBUG: ow_ds9490.c:(546) DS9490_Reset: OK > > DEBUG: ow_ds9490.c:(683) Got 8 bytes from USB search > > DEBUG: ow_ds9490.c:(711) gulp. Adding element 0:81 09 03 30 00 00 00 3A > > DEBUG: ow_ds9490.c:(625) SN found: 81 09 03 30 00 00 00 3A > > DEBUG: ow_search.c:(74) Device found: 81 09 03 30 00 00 00 3A > > DEBUG: ow_cache.c:(547) Adding device location 81 09 03 30 00 00 00 3A > > bus=0 > > DEBUG: ow_cache.c:(636) Add to cache sn 81 09 03 30 00 00 00 3A > > pointer=0x7fbec55f928c index=0 size=4 > > DEBUG: ow_cache.c:(547) Adding device location 81 09 03 30 00 00 00 3A > > bus=0 > > DEBUG: ow_cache.c:(636) Add to cache sn 81 09 03 30 00 00 00 3A > > pointer=0x7fbec55f928c index=0 size=4 > >CALL: ow_parsename.c:(99) path=[/uncached/bus.0/81.09033000] > > DEBUG: ow_usb_cycle.c:(125) Callback on /uncached/bus.0/81.09033000 > > DEBUG: ow_parsename.c:(62) /uncached/bus.0/81.09033000 > > DEBUG: ow_ds9490.c:(607) Index 1 > > DEBUG: ow_cache.c:(479) Adding directory for 00 00 00 00 00 00 00 00 > > elements=1 > > DEBUG: ow_cache.c:(636) Add to cache sn 00 00 00 00 00 00 00 00 > > pointer=0x7fbec55f9298 index=0 size=8 > > DEBUG: ow_dir.c:(195) ret=0 > > DEBUG: ow_usb_cycle.c:(155) Finished FS_dir > > DEBUG: ow_parsename.c:(62) /uncached/bus.0 > > DEFAULT: ow_usb_cycle.c:(191) Set DS9490 1:6 unique id to 81 09 03 30 00 > > 00 > > 00 3A > > > > > > -- > > > > The "short" sequence comes from the DS9490R itself -- it tests the line > > and > > reports if the 1-wire line is shorted out. The fact that it is reporting > > says that the USB to DS2490 (the actual USB chip) connection is working. > > > > I presume you don't have anything connected to the bus master at this > > stage > > of testing? I.e. the socket is empty? > > Thanks again. Yes, usb is OK: > > root@hostname:/usr/src# lsusb > Bus 005 Device 003: ID 04fa:2490 Dallas Semiconductor DS1490F 2-in-1 Fob, > 1-Wire adapter > > Yes, the rj11(12) socket is absolutely empty. > > I guess, i need to buy another one device. :( > > > > -- > View this message in context: > http://owfs-developers.1086194.n5.nabble.com/DS9490R-1-wire-bus-short-circuit-tp10564p10568.html > Sent from the OWFS Developers mailing list archive at Nabble.com. > > > -- > Learn Graph Databases - Download FREE O'Reilly Book > "Graph Databases" is the definitive new guide to graph databases and their > applications. Written by three acclaimed leaders in the field, > this first edition is now available. Download your free book today! > http://p.sf.net/sfu/NeoTech > ___ > Owfs-developers mailing list > Owfs-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/owfs-developers > -- Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. Written by three acclaimed leaders in the field, this first edition is now available. Download your free book today! http://p.sf.net/sfu/NeoTech___ Owfs-developers mailing list Owfs-de
