Joe Wronski <jwronski <at> stillwatereng.net> writes:


> So, it's not that simple, since you also need to set the tris bit to the=
=20
> right state.  Which could involve another macro statement, like:
> #define LED1_TRIS_BIT SomeTrisBitUnion.SomeTrisBit  And maybe another=20
> level of macro like #define ENABLE_LED (some code)
>=20

Sure, one can make life as complicated, or as simple, as one wishes. =20
For the OP question, the whole program can be as simple as:

#include <htc.h>

//define XTAL_FREQ, needed for __delay_ms()
#define _XTAL_FREQ 20000000

#define LED1 RA0

__CONFIG(FOSC_HS & LVP_OFF & WDTE_OFF );

void main() {
  TRISA =3D 0;
  while(1) {
    LED1 ^=3D 1;
    __delay_ms(200);
    };
}

or, one can define a whole set of macros and write several functions to tur=
n LED
on and off.  It all depends on one's style and needs of the project (and al=
so on
one's definition of "simple" :-) ).

Best,
Sergey Dryga
http://beaglerobotics.com




--=20
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