Hello, You can also define a 'lcd_putc' function and then use it through 'putchar' which is called by the usual 'printf' library code.
void putchar(char c) {
if (print2lcd)
lcd_putc(c);
else
ser_putc(c);
}
Sample code :
http://www.linux-france.org/prj/embedded/sources/lcd_msc1210.h
http://www.linux-france.org/prj/embedded/sdcc/sdcc_course.lcd.html#sdcc_course.lcd.sdcc
hth,
Le dimanche 4 janvier 2009, Maarten Brock a écrit :
> If you don't need a full printf, you can also use puts
> which also uses putchar.
>
> > Thanks for the reply. On your reccomendation, I looked at some print
> > examples, but didn't need anything as powerful as printf. I just created
> > a print_LCD (unsigned char* message). function. Here's the working code
> > for anyone at my level...
> >
> > void WriteLCD( unsigned char* message )
> > {
> > ?unsigned char i;
> > ?
> > ?for( i=0; i<32; i++ )
> > ?{
> > ??if( !message[i] )
> > ???break;
> > ???
> > ??DATA_OUT(message[i]);
> > ?}
> > }??
> > Thanks for the lead.
> > Ron
> >
> >
> > -----Original Message-----
> > From: Jacques Pelletier <jpellet...@ieee.org>
> > To: sdcc-user@lists.sourceforge.net
> > Sent: Sat, 3 Jan 2009 3:21 pm
> > Subject: Re: [Sdcc-user] LCD print("string") function?
> >
> > On January 3, 2009 02:16:53 pm ronnym...@aol.com wrote:
> > > This is probably a very basic question, but since I am new to SDCC and
> > > the 8051, I will ask anyway. How can I create a function that will
> > > allow me to write a command like Print_to_LCD("Hello"); without having
> > > to previously store the text to code space or data space and using a
> > > pointer. I have a character print routine running for the I2C LCD
> > > already. I just need to know where to find the ("text") to print after
> > > the function call. Thanks,
> > > Ron
> > >
> > >
> > > **************
> > > New year...new news. Be the first to know what is making
> > > headlines. (http://www.aol.com/?ncid=emlcntaolcom00000026)
> >
> > If you define your own function putchar to send characters to the LCD,
> > you can use printf to print strings. It should call your putchar routine.
> >
> > JP
> >
> >
> > -------------------------------------------------------------------------
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> > Sdcc-user@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/sdcc-user
>
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--
- Philippe Latu
philippe.latu(at)linux-france.org
http://www.linux-france.org/~platu
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