Names changed, and functionality verified. Merged into master.
Now I just need to build a circuit so I can use this to cut the 5V feed on my bus, for full remote restarts in case of some odd hangs I have not yet been able to isolate the source of.. What I'm seeing is that the bus (~80m, 7 DS18S20, 16 DS18B20, 4 DS2406, 1 custom slave) starts going between empty/short during scans. Keeping bus low for any time does not help, only dropping 5V seems to resolve the issue (and no, disconnecting the custom slave does not help. It was the first thing tested)
If anyone else has seen, or even better, solved, similar issues, ideas are welcome!
On 3/14/15 02:06 , Paul Alfille wrote:
Great idea!On Fri, Mar 13, 2015 at 1:48 PM, Johan Ström <jo...@stromnet.se <mailto:jo...@stromnet.se>> wrote:Indeed, one is read only and one is write only. The reasoning behind two separate nodes is that the actual commands to the Link is either "Set high", "Set low", or "Put in Hi-Z mode and read". That is, reading means any previous output will be invalidated as it will no longer "supply" a high/low level. How about auxctrl and auxsense, to avoid mixup with other "power" entries (which indicates powered or parasite)? On 3/13/15 17:17 , Paul Alfille wrote:I love the idea, but not the names. In seems that one is read-only and one write-only from the name. How about auxpower and auxsense? On Thu, Mar 12, 2015 at 12:37 PM, Johan Ström <jo...@stromnet.se <mailto:jo...@stromnet.se>> wrote: Oops, early send... Trying again, this time writing the full mail! The LINK adapter has an extra AUX line which can be used as a general I/O port (somewhat limited though). Some background, from LinkUSB manual page: --- The LinkUSBTM supports the standard RJ45 type 1-Wire bus connection wherein the center two contacts of the RJ connector are the data and ground connections to the 1- Wire bus. However, another pin in the RJ connector is also brought into play. This line is, by default, driven to the high impedance state and left un-powered. It can be an output supplying a low level (0 VDC) or a high level (5 VDC), or it can be an input sensing a 0- 5VDC logic level. When set to the 5V level by the “d” command, this line can be used to provide power for DS2409 and DS2406/7 type 1-Wire switches. However, the current available from this output is limited. The amount of current that the Aux line can provide is limited to approximately 75 mA. ASCII commands used by the host can cause the Auxiliary I/O pin to change its behavior as needed. -- The other Link devices have the same, somewhat different details though, mainly with regards to power levels. I've added some code to control this line via owfs, commited in branch link-aux: https://sourceforge.net/p/owfs/code/ci/fca93b164f8b5f0fd0f97bb66d0be7081c751384/ It basically adds two new points in the filesystem: /bus.N/interface/settings/ link/auxin /bus.N/interface/settings/link/auxout This is visible for Link devices only. Auxin allows putting the AUX pin in hi-z mode, and reading the current value. auxout puts the pin in high or low mode. Is this a good solution? It isn't really a "setting", but it belongs under /bus.0/interface. Also, I didn't put auxin/out on the same node, since sending the "read aux" command will actually put it in Hi-z mode rather than just read it. Reading from auxout is not doable right now, it would only be able to reply the latest written value, which may or may not be correct, so I skipped support for reading. Let me know how if you think this fits in with the rest of OWFS, or if it should be solved differently. Regards Johan ------------------------------------------------------------------------------ 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 <mailto:Owfs-developers@lists.sourceforge.net> https://lists.sourceforge.net/lists/listinfo/owfs-developers ------------------------------------------------------------------------------ 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 <mailto:Owfs-developers@lists.sourceforge.net> https://lists.sourceforge.net/lists/listinfo/owfs-developers------------------------------------------------------------------------------ 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 <mailto:Owfs-developers@lists.sourceforge.net> https://lists.sourceforge.net/lists/listinfo/owfs-developers ------------------------------------------------------------------------------ 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
------------------------------------------------------------------------------ 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
