RE: [avrdude-dev] Parallel port doesn't keep programmed states

[Rune Christensen]

Hi Eric and all the others

I have found a driver using the lpt port for I2C from www.beyondlogic.org
I have ordered a DDK from Micro$oft.

I'm not an expert in windows programming but I will give it a try because I
haven't heard about anyone else that are started working on a driver for
Windows NT/2000/XP.

To do list:
  We need to get exclusive access to the lpt port (P'n'P problem) (solved in
the driver from beyondlogic)
  How much should the driver take care of (communication and/or access)??

  What else?

Does anyone know what uisp needs from the driver?

Rune


-----Original Message-----
From: address@hidden
[mailto:address@hidden
Behalf Of E. Weddington
Sent: Monday, November 24, 2003 10:45 PM
To: address@hidden; Marc Wetzel
Subject: RE: [avrdude-dev] Parallel port doesn't keep programmed states


On 24 Nov 2003 at 22:17, Marc Wetzel wrote:

> Hi alltogether,
>
> Correct me if I'm wrong, but I think that giveio is no "real" driver at
all.
>
> It just sets the appropriate rights to the user/program to write to the
> (normally locked) ports at all.

AFAIK, that is correct.

> It is not buggy. There is nothing to be buggy in it :) Have you ever
> looked over the code?
>

Only "buggy", in the sense that it doesn't behave well with contention on
the parallel port.

> What I saw all the times, is that users have print-queues running, with
open
> documents in it and that interferes with any port writing at all...

Absolutely. This is why I wish there was a robust alternative to giveio on
Windows.

Eric


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