Hello from Gregg C Levine
It looks good to me. A suggestion? How about making the home page for this
project available in English? I am afraid the only languages I speak, and
read, besides English aren't human ones.
Gregg C Levine yodathejediknight@att.net or
yodathejediknight@worldnet.att.net
"May the Force be with you!"
----- Original Message -----
From: "Damien Mattei" <Damien.Mattei@unice.fr>
To: "Blaise Gassend" <blaise@gassend.com>
Cc: <linux-parport@torque.net>; "Georges Carle" <Georges.Carle@unice.fr>
Sent: Tuesday, May 06, 2003 11:18 AM
Subject: Re: [PARPORT] reset // port device
>
>
> Blaise Gassend wrote:
> > Hi,
> >
> > When you say that the lines are "open" or "closed", what exactly do you
> > mean. If by open you mean not connected, and by closed you mean
> > connected to ground, then that could be the source of your problem. You
> > should be connecting the lines to 0V or to +5V to generate signals (you
> > could get the +5V from one of the output lines of the port if you want).
>
> yes it's like that it has been connectd by someone else,not me, and the
> system worked well with a PC/XT under DOS and 2 // card during 3 years ,
> i connected the system to a 486 PC under linux and rewrite the program
> for linux and it worked well during 1 year with the built in // port,
> then few months ago i add another // board (already used on the PC /XT)
> and it still worked for some months, but now the data read on both //
> card are erratic , if i reboot the linux system the data are corrects
> for some hours, but became invariant after.
> I don't think there is a problem with the external electronic connection
> as it uses the +5 V from output lines and worked well in the past and
> still works well after software reboot .
>
>
> >
> > When you leave the line disconnected (open) you could get a variety of
> > strange behaviors depending on your exact hardware implementation.
> >
> > Blaise
> >
> > Quoted from Damien Mattei on Tue, May 06, 2003 at 09:45:48AM +0200.
> >
> >>hello,
> >>
> >>i wrote a litte soft for monitoring alarms connected to // port under
> >>linux.( see: http://www-iag.unice.fr/guardian/guardian.html )
> >>it's a system quite simple if the circuit on one of the 5 lines (BUSY,
> >>PAPER OUT, SELECT, AUTOFEED, ERROR) is open the data read is true and
> >>false if it is closed.It worked well during one year, but now the data
> >>are always read as false, so if an alarm occured it will not be
> >>monitored as before. The problem is that it happens randomly ,on any
> >>lines, and randomly after a period of time,when it happens it is not
> >>reversible until i reboot the system with no power off needed.
> >>
> >>So the linux kernel (or the BIOS?) seems to be able to do a soft reset
> >>on the // port at boot time, if i can do this reset in my own program
> >>the system will work again but i can't find on the internet how to do
> >>this , perheaps someone in the mailing list know that or have an advice?
> >>
> >>best regards
> >>
> >>Damien
> >>--
>
>
> --
> Damien MATTEI
> C.N.R.S - UMR 6549 - U.N.S.A
> mailto:mattei@unice.fr
> http://www-iag.unice.fr/
>
>
>
> -- To unsubscribe, send mail to: linux-parport-request@torque.net --
> -- with the single word "unsubscribe" in the body of the message. --
>
-- To unsubscribe, send mail to: linux-parport-request@torque.net --
-- with the single word "unsubscribe" in the body of the message. --
This archive was generated by hypermail 2b29 : Wed May 07 2003 - 10:33:57 EDT