Listed by some kind of ID I remember it was. For profibus RS-485 over profibus I think it should be even parity but have no idea if this is common for other RS-485 use.
On Sat, 6 Aug 2016 22:33:30 -0400 Gene Heskett <[email protected]> wrote: > On Saturday 06 August 2016 10:01:33 Nicklas Karlsson wrote: > > > It get listed in /dev but probably as /dev/ttyUSBx. It should also be > > possible to access it by serial number or similar so that it does not > > move. > > > It showed up in two places Nicklas, once as a /dev/serial directory, with > subdirs by-id and by-path in it and once as /dev/ttyUSB0. I played a > bit with setserial -G but couldn't make sense out of the response. I > need to set it for 9600-8n1 (I think) according to this teeny booklet. > > And the setserial man page has shrunk 10 kilobytes from the 1998 version. > Humm, the last time I fired up minicom, it still had the tools to do > this, maybe I could cheat and use it? > > This also showed up at the same time: > gene@GO704:~$ ls -l /dev/ptmx > crw-rw-rw- 1 root root 5, 2 Aug 6 21:56 /dev/ptmx > > But setserial just threw up its hands & said "invalid argument". > But I see now that the time corresponds to my having to put a fresh AAA > in the mouse just a bit ago. > > I see on our wiki that there is a vfd.py, and a comm.py that looks like > it could supply some raw material IF one was a python guru, but you > shouldn't use those kinds of words when describing me. > > Thanks Nicklas. > > > On Sat, 6 Aug 2016 09:24:22 -0400 > > > > Gene Heskett <[email protected]> wrote: > > > Greetings everybody; > > > > > > 2 question that I assume are two separate problems. > > > > > > 1. How is the detected usb port when these things are plugged in, > > > linked to become available to hal? > > > > > > 2. This "fake" vfd I have, is there a way to query it and determine > > > if we have a driver for it, or will I have to write a .comp file for > > > it. I do have the definitions of both the 13 byte packets sent by > > > the inverter, and the 9 byte command strings to be sent to it. > > > > > > It appears that control by both paths is possible at the same time, > > > so one could drive it with a run/stop line, a direction line, and a > > > pwmgen output buffered by a cmos stage running on 5.0 volts directly > > > into those 3 terminals. However, from the looks of the command > > > strings definitions, it looks as if anything one can do from its > > > panel buttons, can also be done by the command sent. There is also > > > a rather extensive error checking in each string along with a much > > > better than a single bit synch sequence. The inverter sends data > > > actively, so no need to query it, and apparently receives commands > > > asynchronously, eg anytime sent. > > > > > > So, the first thing I assume is to plug in one of these usb-485 > > > converters, and hook it to the + and - terminals on the inverter and > > > make data flow. I am assuming its an hid type device. I'll take a > > > data cable out and do that plugin bit & see what dmesg says at some > > > point today and relate what I see. > > > > > > 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) > > > Genes Web page <http://geneslinuxbox.net:6309/gene> > > > > > > -------------------------------------------------------------------- > > >---------- _______________________________________________ > > > Emc-developers mailing list > > > [email protected] > > > https://lists.sourceforge.net/lists/listinfo/emc-developers > > > > ---------------------------------------------------------------------- > >-------- _______________________________________________ > > Emc-developers mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-developers > > > 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) > Genes Web page <http://geneslinuxbox.net:6309/gene> > > ------------------------------------------------------------------------------ > _______________________________________________ > Emc-developers mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-developers -- Nicklas Karlsson <[email protected]> ------------------------------------------------------------------------------ _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
