Did my previous reply make it back to Brian? I'll CC him this time just in
case.
Here's where this has been briefly discussed before:
http://www.nabble.com/LCD---AAGelectronica-design-tf3137574.html
(starting at the sixth message in the thread, written by me.)
The code for the DS2408 seems to write in bytes. As a result, if you try to
change one of the "button" bits, you're going to also be affecting the pins
connected to the LCD, and it will mess with the display. Also, when
something gets sent to the LCD, it affects the bits that the three buttons
are attached to. I believe this is just something owfs doesn't support at
this time. Take a look at ow_2408.c, all the data going to the DS2408 is
sent by OW_w_pios, which operates on bytes.
-Ben
On 9/12/07, Paul Alfille <[EMAIL PROTECTED]> wrote:
>
>
>
> ---------- Forwarded message ----------
> From: Brian Fahrlander < [EMAIL PROTECTED]>
> Date: Sep 12, 2007 2:05 PM
> Subject: LCD "spare" ports
> To: [EMAIL PROTECTED]
>
>
> I've been fiddlin' with this all weekend, and am out of clues.
>
> The hobby-boards LCD board is supposed to have three extra lines
> that aren't used by it; under 29.something/sensed.[012] I get nothing
> while I change the state on the switches. The switches are good...there
> must be something else I'm doing wrong.
>
> I'm guessing you have one there, it's how you knew to make both the
> LCD_H and LCD_M (or whichever), and while that wasn't just last week,
> maybe you remember something about it, or at least talk to someone else
> about it. Am I wrong?
>
> What bothers me is that, when I write a "0" to PIO.[012], it clears
> (and makes useless) the LCD display. But the schematic suggests that
> those are the unused lines. Could that be a typo? I'll fiddle with the
> sensed.[567] lines and see what happens.
>
> Worse yet, I can't seem to find anyone to talk to about it; there's
> no Google conversations about a working LCD, just "Is anyone else using
> it?"
>
> I'd appreciate anything you can do to help.
> --
> ------------------------------------------------------------------------
> Brian Fahrländer Christian, Conservative, and Technomad
> Evansville, IN http://Fahrlander.net/brian
> ICQ: 5119262 AOL/Yahoo/GoogleTalk: WheelDweller
> ------------------------------------------------------------------------
>
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