Subject:
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Re: tweaking around dlcd_show( )
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Sat, 25 Aug 2001 10:28:40 GMT
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Viewed:
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3951 times
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Hi,
I haven't used LegOs (yet), but looking at the dlcd_show function, it
expects 2 parameters. The defines are also for 2 parameters, so you would
need to define and use it like this:
int progressPattern[PATTERN_ITEMS_NB][2]={
{LCD_4_BOTL} ,
{LCD_4_TOPL} ,
{LCD_4_TOP }
};
dlcd_show(progressPattern[ i ][0], progressPattern[ i ][1] );
Hope this helps.
Martin
In lugnet.robotics.rcx.legos, Alexandre Bec writes:
> Hi all legOS users,
>
> need help about dlcd_* utilities
>
> I'd like to display on the lcd a sequence of digits:
> something like :
>
> dlcd_show (LCD_4_BOTL);
> lcd_refresh();
> msleep(250);
> lcd_clear();
> dlcd_show (LCD_4_TOPL);
> lcd_refresh();
> msleep(250);
> lcd_clear();
> dlcd_show (LCD_4_TOP);
> ...
>
> But of course this is not a good idea to hardcode a long sequence.
> So I tried to make a pattern of segments stored in an array, and access to
> the good one with an index value in a for { } loop.
>
> int progressPattern[PATTERN_ITEMS_NB]={
> {LCD_4_BOTL} ,
> {LCD_4_TOPL} ,
> {LCD_4_TOP }
> };
>
> and later
> for (...){
> ...
> lcd_clear();
> dlcd_show(progressPattern[ i ] );
> lcd_refresh();
> msleep(250);
> ...
> }
>
> and I obtain the following compilation errors concerning dlcd_show( );
>
> macro `BIT_OF' used with just one arg
> macro `BYTE_OF' used with just one arg
>
> I tried lots of braces combination , a declaration of a bidimensional array
> too, but in vain.
>
> Since I'm not an expert in C and macros, I certainly made something wrong
> when filling this array with defines, and maybe it is not the right way to
> proceed.
>
> Thanks a lot for advance.
>
> --
> Alexandre BEC
> laleks_at_free_dot_fr
> --
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Message has 1 Reply:
 | | Re: tweaking around dlcd_show( )
|
| Thanks Martin, I tried this too but it doesn't work : progress.c:27: macro `dlcd_show' used with too many (2) args progress.c:27: macro `BIT_OF' used with just one arg progress.c:27: macro `BYTE_OF' used with just one arg The hint seems to fit two (...) (25 years ago, 25-Aug-01, to lugnet.robotics.rcx.legos)
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Message is in Reply To:
| | tweaking around dlcd_show( )
|
| Hi all legOS users, need help about dlcd_* utilities I'd like to display on the lcd a sequence of digits: something like : dlcd_show (LCD_4_BOTL); lcd_refresh(); msleep(250); lcd_clear(); dlcd_show (LCD_4_TOPL); lcd_refresh(); msleep(250); (...) (25 years ago, 25-Aug-01, to lugnet.robotics.rcx.legos)
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