//include file
#include <pic.h>

//16F84 configuration 
__CONFIG(0x3FF1);

//portb  macro
#define PORTBIT(adr, bit)	((unsigned)(&adr)*8+(bit))

//portb pin assignment
static bit LED0 @ PORTBIT(PORTB, 0);
static bit LED1 @ PORTBIT(PORTB, 1);
static bit LED2 @ PORTBIT(PORTB, 2);
static bit LED3 @ PORTBIT(PORTB, 3);
static bit LED4 @ PORTBIT(PORTB, 4);
static bit LED5 @ PORTBIT(PORTB, 5);
static bit LED6 @ PORTBIT(PORTB, 6);
static bit LED7 @ PORTBIT(PORTB, 7);

//global variables
unsigned int i;		//for loop pause
unsigned int c;		//for loop event loop

//functions
void pause_action();		//pause
void blink_redgreen();		//blink red then green
void blink_baf();		//blink red and green back and forth
void alt_blink();		//every other red then green
void blink_sequence();		//blinks red one at a time
//end functions

//main function
void main(void)
{	
	TRISB = 0x00;
	PORTB = 0b00000000;	
	
	while(1)
	{

		blink_redgreen();
		blink_baf();
		alt_blink();
		blink_sequence();
		
	};

}
//end main function

void pause_action()
{
	
	for(i=0; i<4000; i++);
	for(i=0; i<4000; i++);
	for(i=0; i<4000; i++);
	for(i=0; i<4000; i++);
	for(i=0; i<4000; i++);
	for(i=0; i<4000; i++);
	
};

void blink_redgreen()
{
	
	for(c=0; c<10; c++)
	{
			
		PORTB = 0b10101010;
		pause_action();			

		PORTB = 0b01010101;
		pause_action();
						
	};
	
};

void blink_baf()
{

	for(c=0; c<10; c++)
	{

		PORTB = 0b10100101;
		pause_action();
						
		PORTB = 0b01011010;
		pause_action();
						
	};

};

void alt_blink()
{

	for(c=0; c<10; c++)
	{

		PORTB = 0b10011001;
		pause_action();
						
		PORTB = 0b01100110;
		pause_action();
						
	};

};

void blink_sequence()
{

	for(c=0; c<10; c++)
	{

		PORTB = 0b10010101;
		pause_action();
			
		PORTB = 0b01100101;
		pause_action();
			
		PORTB = 0b01011001;
		pause_action();
			
		PORTB = 0b01010110;
		pause_action();
			
	};

};