On Saturday 11 January 2020 17:00:19 Charles Lepple wrote: > On Jan 11, 2020, at 3:50 PM, Gene Heskett wrote: > >> The problem is further downstream. Even after you map HID names to > >> NUT names, then you run into the fact that CPS and NUT are > >> interpreting the HID Report Descriptor differently. (Some details > >> here: https://github.com/networkupstools/nut/issues/439 ) > > > > Thats asking quite a bit of you. IMO TANSTAAFL applies here, just > > like anyplace else. > > To be fair, glancing at one specific debug log is a lot easier than > fixing code that has to run on equipment that I've never seen before > :-) > > > Perhaps a confirmation of the clamp to zero for low loads might be > > this snippet from "strace upsc myups": > > > > newselect(4, [3], NULL, NULL, {tv_sec=5, tv_usec=0}) = 1 (in [3], > > left {tv_sec=4, tv_usec=999990}) > > read(3, "s ups.load \"0\"\nVAR myups ups.mfr"..., 64) = 64 > > write(1, "ups.load: 0\n", 12ups.load: 0 > > ) = 12 > > > > where it apparently reads 64, but reports an 0, which is probably > > pretty miniscule in the grand scheme of things if that is a 3 byte > > value that it reads. > > The parameters to read() are the file descriptor, a buffer, and a > length, so the "3" is the file descriptor (comes from the read set in > newselect(): [3]), and 64 is the length of the string that includes > "VAR". > > However, cps-hid.c is in the usbhid-ups driver, which is sending the > VAR data to upsd. I was recommending that you grab the debug log from > the driver, before it has had a chance to convert any of the raw HID > bytes to numbers.
The command line in that file is duff. Quote: In preparation for writing a subdriver for a device that is currently unsupported, run usbhid-ups with the following command line: drivers/usbhid-ups -DD -u root -x explore -x vendorid=XXXX auto (substitute your device's 4-digit VendorID instead of "XXXX"). I tried 0501 and 0764, same return. drivers/usbhid-ups -DDD -u root -x explore -x vendorid=0501 auto >& /tmp/info Instant return, logging this: 0.000000 Error: too many non-option arguments. Try -h for help. Network UPS Tools - Generic HID driver 0.41 (2.7.4) USB communication driver 0.33 Thanks. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Nut-upsuser mailing list [email protected] https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/nut-upsuser
