/* main.c
 *
 * Copyright (c) 2003-2004 Susan Cotterell.
 * Permission to copy is granted provided that this header remains
 * intact. This software is provided with no warranties.
 *
 * Version : 1.0
 *
 * Demo program, flashes LEDs on Port B, responds to switch press on RA1
 *
 */

/* --------------------------------------------------------------------- */

#include <pic.h>

/* --------------------------------------------------------------------- */

#define PORTBIT(adr, bit) ((unsigned)(&adr)*8+(bit))
static bit button @ PORTBIT(PORTA, 1);

/* --------------------------------------------------------------------- */

main(void)
{
	unsigned i;
	unsigned char j;
	TRISB = 0; /* all bits output */
	j = 0;

	for(;;) {
		PORTB = 0x00;/* turn all on */
		for(i = 16000; --i ; )
			continue;
		PORTB = ~j; /*output value of j */
		for(i = 16000; --i ; )
			continue;
		if(button == 0) /* if switch pressed, increment */
			j++;
	}
}