On Thu, 2007-02-08 at 23:58 +0100, Luit van Drongelen wrote:
> I was wondering if I could assign the value of a short int (0x0FFF for
> example) to two config bytes (like the PDC0L and PDC0H bytes) in a
> single line, or any other simple way...
This is difficult, as SDCC is inherently little-endian, whereas PDC0L
and PDC0H are stored as big-endian, i.e. the high byte resides at the
lower address.
You could use a construct like
#define U(x) ((unsigned int)(x))
#define TO_BIGE(x) ((U(x) << 8) | (U(x) >> 8))
void foo(unsigned int val) {
*(__data unsigned int *)(&PDC0H) = TO_BIGE(val);
// or, if &PDC0H does not work
*(__data unsigned int *)(0xF78) = TO_BIGE(val);
}
Not sure, though, that SFR like to be accessed indirectly...
Good luck,
Raphael
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