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>
> >
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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>

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