On 16 feb, 18:54, Joep Suijs <[email protected]> wrote:
> 2009/2/16 Ritchie <[email protected]>:
>
> > About lcd_st7036.jal (or maybe rename to lcd_dogm)
>
> Would it be a good idea to change it to dogm?
The graphic display can also be added in the library although it uses
an other controller.
Both are serial and look a like, then dogm would be obvious to name
the library.
> Isn't this lib compatible with other displays with the same controller?
as far as i can see means same controller, same protocoll and thus
compatible
> And I suspect it is not (yet) suitable with all dogm displays (i saw
> there are graphical ones also).
i think the fuction _lcd_write_command() can be used for sending the
actual information but making al kinds of nice fuctions like line(),
circle(), squar(), etc.would be a lot more difficult.
>
> > I changed the lib
> > to make it the same as hd44880_4.jal
>
> I think this is a good thing - a library that provides similar
> functionality should have the same interface.
OK but this could mean we have to add the same procedures we are going
to add to lcd_st7036, related to non graphic (if combined), to Rob,s
hd44880_4.jal and hd44880_8.jal.
> > and therefore removed al the extra functions and put those temporarily in
> > addition.jal
>
> > I agree with you Joep, it is also my idea to add al the nice, useful
> > functions from addition.jal into print.jal, ore format.jal like the
> > time and date procedure and all the function only related to lcd like
> > the clear_line and shift left or right or progress bar put them in all
> > the lcd libraries (if Rob agrees).
>
> Maybe we should have an lcd_common library that has functions that run
> on all (most) lcd's.
This is off course possible but than you have to add 2 libs in your
main file instead of just one.
It also does not make it easier to use and it does not save memory of
the controller and hardly any of the harddisk so why make a special
function lib?.
I only split lcd_st7036.jal because I thought you all want this, but I
don’t see the benefit of it.
>
> If you look at the functions that are in addition, could you split
> them in three groups:
> - ones that are specific for this display (like lcd_home,
> lcd_shift_right - i suspect they are different on other displays,
> not?)
no, same on hd44880
> - the ones that are generic stream candidates (i think lcd_date,
> lcd_string; the lcd_b* and lcd_w* do provide a bit extra over the
> print/format candidates - would that be worth to add them as separate
> functions?)
lcd_string is same as in print.jal, I added because off only needing
one lib for lcd.
lcd_date is very flexible it would be nice to keep him this way no
matter where he ends.
lcd_b* and lcd_w* are non leading zero optional left alligned, signed
or unsigned, with or without decimal point line and row.
if we remove line and row, it would be a nice procedure to add to
print (although left alignment is not useful for serial transmission)
> - The ones that work on any display (lcd_progress?)
t least on st7036 adn hd44880
>
> > All the fuction you see in addition.jal are working also on hd44880
> > lcd,s so not only dogm related.
>
> Do you mean that the same fuction works on the 44880 or that the 44880
I mean i wrote to libraries with the same procedure calls, one for
st7036 and one for hd44880, so yes the same function works on hd44880
with the sam fuction call.
> support the same feature, so there should be a function too?
>
> > If you want the dogm to be added to jallib, I think all functions and
> > procedure calls on both types should be the same.
>
> Definitely.
as i said before, this means we have to modify hd44880.
>
> > Also why not add the lcd_init() call in the library in stead of in the
> > main file?
>
> This is a matter of taste and iirc we debated about this. The way it
> is now, including a lib on itself does not generate any code.
OK clear, i will remove him from the lib and added in the comments
>
> > If you have the March edition of the Elektor magazine you can see the
> > lcd on page 37 and also on this side:
> >http://www.lcd-module.com/products/dog.html
>
> I just build a board with a graphical display (128*64) to create a
> lib. I wish I had not so I needed to buy such a neat display...
Not only need but very cheap
Please let me know which procedures in lcd_addition.jal you all want
in which library so I or somebody else can add them.
greetz
Richard
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