#define F_CPU 8000000
#include <avr/io.h>
#include <util/delay.h>
#include <avr/interrupt.h>
#include "fanbus.h"
//A bit frame is 640 microseconds
//A long bit is 540 microseconds with 50us on each side
//A short is 160 microseconds, 50us before, 430 after

//If outlet > 0, set that outlet to state
volatile char outlet = 0;
volatile char state  = 0;

//Generate a long bit
void bit_long()
{
	PORTD |= 0b00001000;
	_delay_us(1700);
	PORTD &= ~0b00001000;
	_delay_us(900);
}

//Generate a short bit
void bit_short()
{
	PORTD |= 0b00001000;
	_delay_us(500);
	PORTD &= ~0b00001000;
	_delay_us(2100);
}

//Send channel b preamble
void ch_b_preamble()
{
	bit_short();
	bit_long();
	bit_long();
	bit_short();
	bit_long();
	bit_short();
}

//Send channel b end-of-frame
void ch_b_end()
{
	bit_short();
	bit_long();
	bit_short();
	bit_short();
}

//Data for Outlet 1 on/off
void ch_b_out_1_on()
{
	bit_short();
	bit_short();
	bit_long();
	bit_short();
	bit_short();
	bit_short();
}

void ch_b_out_1_off()
{
	bit_short();
	bit_short();
	bit_short();
	bit_long();
	bit_short();
	bit_short();
}

//Data for Outlet 2 on/off
void ch_b_out_2_on()
{
	bit_short();
	bit_short();
	bit_short();
	bit_short();
	bit_long();
	bit_short();
}

void ch_b_out_2_off()
{
	bit_short();
	bit_short();
	bit_short();
	bit_short();
	bit_short();
	bit_long();
}

//Data for Outlet 3 on/off
void ch_b_out_3_on()
{
	bit_short();
	bit_long();
	bit_short();
	bit_short();
	bit_short();
	bit_short();
}

void ch_b_out_3_off()
{
	bit_long();
	bit_short();
	bit_short();
	bit_short();
	bit_short();
	bit_short();
}

int main()
{
	DDRD  |= 0b00001000;
	PORTD |= 0b00001000;
	fanbus_init(12);

	while(1)
	{
		if(outlet == 1 && state == 1)
		{
			cli();
			for(char i = 0; i < 10; i++)
			{
			ch_b_preamble();
			ch_b_out_1_on();
			ch_b_end();
			_delay_ms(10);
			}
			sei();
			state = 0;
			outlet = 0;
		}
		if(outlet == 1 && state == 0)
		{
			cli();
			for(char i = 0; i < 10; i++)
			{
			ch_b_preamble();
			ch_b_out_1_off();
			ch_b_end();	
			_delay_ms(10);
			}
			sei();
			state = 0;
			outlet = 0;
		}
		if(outlet == 2 && state == 1)
		{
			cli();
			for(char i = 0; i < 10; i++)
			{
			ch_b_preamble();
			ch_b_out_2_on();
			ch_b_end();
			_delay_ms(10);
			}
			sei();
			state = 0;
			outlet = 0;
		}
		if(outlet == 2 && state == 0)
		{
			cli();
			for(char i = 0; i < 10; i++)
			{
			ch_b_preamble();
			ch_b_out_2_off();
			ch_b_end();	
			_delay_ms(10);
			}
			sei();
			state = 0;
			outlet = 0;
		}
		if(outlet == 3 && state == 1)
		{
			cli();
			for(char i = 0; i < 10; i++)
			{
			ch_b_preamble();
			ch_b_out_3_on();
			ch_b_end();
			_delay_ms(10);
			}
			sei();
			state = 0;
			outlet = 0;
		}
		if(outlet == 3 && state == 0)
		{
			cli();
			for(char i = 0; i < 10; i++)
			{
			ch_b_preamble();
			ch_b_out_3_off();
			ch_b_end();	
			_delay_ms(10);
			}
			sei();
			state = 0;
			outlet = 0;
		}
	}
	return 0;
}



/*		bit_long();
		bit_long();
		bit_short();
		bit_short();
		bit_short();
		bit_long();
		bit_short();
		bit_long();
		bit_short();
		bit_long();
		bit_short();
		bit_long();
		bit_short();
		bit_long();

		bit_short();
		bit_short();

		bit_short();
		bit_short();

		bit_short();
		bit_short();

		bit_short();
		bit_short();

		bit_short();
		bit_short();

		bit_long();*/