I don't really see how you can avoid the constant being in the program area,
but personally I would simply do this, below, although admittedly this would
pull in some string manipulation library routines. Whatever you do,
the "Hello\n" string is going to have to be stored somewhere that is not
volatile in the first instance.
buf="Hello\n";
Another way might be to declare "Hello\n" as a constant, set up a pointer to
that constant and then dereference the pointer into volatile memory using a
loop, incrementing the pointer each time around, until the null string
terminator is encountered, but you're probably not going to save much program
space over the library routine that does the same job. You could use some
inline assembly language of course...
On Thursday 20 November 2008 13:44:32 Vaclav Peroutka wrote:
> > ----------------------------------------
> >
> > TRISB_bits.TRISB6 = 0; // SCK
>
> Hello, I just found that direct TRISB6 = 0; works properly. Even if I would
> like TRISBbits.TRISB6 = 0; as it is done for PIC16 port. Is there any plans
> to synchronize it ?
>
> I have another question. In SDCC manual I did not find it but maybe
> somebody can help me. I currently initialize strings like that: main() {
> __data unsigned char buf[10];
>
> buf[0] = 'H', buf[1] = 'e'; buf[2] = 'l', buf[3] = 'l', buf[4] = 'o';
> buf[5] = 0x0d; buf[6] = 0x00; SendString( buf);
> }
>
> Is there any more clever way how to initialize buffer with "Hello\n" in
> data memory ? But I do not want to have string in program memory and use
> GPTRGET. Or the way I did it is the only possible way ?
>
> Thank you,
> Vaclav
>
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--
Richard.
PGP Key-id: 0x5AB3D350
Giving up on assembly language was the apple in our Garden of Eden:
Languages whose use squanders machine cycles are sinful. The LISP
machine now permits LISP programmers to abandon bra and fig-leaf.
-- Epigrams in Programming, ACM SIGPLAN Sept. 1982
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