Re: Running several drivers with pictogram support

Hi
On 09.11.2011 04:15, Stefan Herdler wrote:
>
> Are all Displays showing the same content or are they grouped to one 
> big display like it is possible with the hd44780?
> And what happens if the Displays doesn't have different sizes?
> Well, I guess, I try it out in the next days.
>
Meanwhile I did that and I can answer the questions my self.

-> Are all Displays showing the same content or are they grouped to one 
big display like it is possible with the hd44780?
All displays show the same content.

->And what happens if the Displays doesn't have different sizes?
That depends on which driver is loaded first.
The screen size is the display size of the first display.
If the driver of the larger display is loaded first the superfluous 
characters are just cut away on the right side of the smaller display.
If the driver of the smaller display is loaded first there will be some 
black unused characters on the right side of the larger display.

My conclusion of the test:
1.: It doubt anyone likes to use multiple displays with different sizes 
in a productive environment. The Output on the second loaded display 
will always look ugly.
2.: If there are two displays on the front of a HTPC the user wouldn't 
use this mode. (Nobody would like two displays with the same contents on 
the front of one computer.) He would run two independent instances of 
the LCDd instead.
3.: Now I understand why this feature is not documented ;).
4.: Since it does not make sense to use different-sized displays anyway, 
we can safely restrict ourselves to identical display with icons, I 
think. Or equal sized to displays, where one of them has icons (activated).
  In that point the suggestion made in the last mail would be sufficient 
and it will probably cover most applications.

I don't thing we should put to much effort in the multi-dispay support, 
because of the little relevance in practice.


Regards
Stefan