Hi Paul, I assume there is some usage case that would trigger the use of overdrive mode. I was not able to find an option that would explicitly request it. So yes, you might say the problem is getting DS2480B to use overdrive mode, but the main issue is, I was not able to find any documentation regarding overdrive mode operation in OWFS. All I need are some protocol compliant overdrive mode slots (reset and read/write) on the bus, so I can sample it and test my logic analyzer protocol decoder on it.
Regards, Iztok Jeras On Sat, Jul 7, 2012 at 2:27 PM, Paul Alfille <[email protected]> wrote: > Is the problem getting to DS2480B into overdrive mode? > > On Fri, Jul 6, 2012 at 2:48 PM, Iztok Jeras <[email protected]> wrote: >> >> Hi, >> >> I made a lot of progress on the 1-Wire protocol decoder, the link and >> network layers are covered, for the transport layer only bytes are >> listed. I plan to separate the layers into separate decoders, so >> devices without network layer (DS1821 thermostat, ...) will also be >> supported. Overdrive support is implemented but not tested. >> >> I still do not know how to get some overdrive transfers, I have the >> next two overdrive enabled devices: >> DS28EA00U (thermometer, PIO, sequence detection) >> DS2450S (quad A/D) >> I was not able to get overdrive to work on any of this two devices. >> Can anybody suggest me how to get some overdrive slots with one of >> this two devices? >> >> My software/hardware: >> - Ubuntu 10.04 >> - OWFS 2.8p15 (I could update to the newer version, but I do not think >> there were any related changes) >> - LP2303 USB to UART >> - DS2480B 1-Wire master >> >> List of devices on my bus: >> $ owdir >> /20.B9D80B000000 >> /10.C51EE5010800 >> /28.9BCFC8000000 >> /42.A8A603000000 >> /bus.0 >> /uncached >> /settings >> /system >> /statistics >> /structure >> /simultaneous >> /alarm >> >> Regards, >> Iztok Jeras >> >> On Wed, Jun 6, 2012 at 6:19 PM, Iztok Jeras <[email protected]> wrote: >> > Hi, >> > >> > I am currently working on a 1-Wire protocol parser for the sigrok >> > logic analyzer (I did not get far yet): >> > http://sigrok.org/wiki/ >> > >> > https://github.com/jeras/sigrok/tree/master/libsigrokdecode/decoders/onewire >> > >> > To be able to test the parser, I need 1-Wire sequence dumps, this is >> > what I have currently: >> > https://github.com/jeras/sigrok-dump/tree/master/onewire/owfs >> > >> > Among the attached devices DS28EA00 supports overdrive. But a quick >> > look at the dump seems to indicate that no overdrive transfers were >> > performed. Is there a way to explicitly request an overdrive access (I >> > was not able to find much in the documentation)? I will also have to >> > increase the sample rate to 5MHz (currently 1MHz). >> > >> > Regards, >> > Iztok Jeras >> >> >> ------------------------------------------------------------------------------ >> 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 >> [email protected] >> 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 > [email protected] > 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 [email protected] https://lists.sourceforge.net/lists/listinfo/owfs-developers
