// Vorabdefinitionen
#define F_CPU 8000000UL

#include <util/delay.h>
#include <avr/io.h>

volatile bool		prio_active;

//------------------------------------
//DMX Receiver
void setupPCB(void)
//------------------------------------
{
	DDRA = 0b11111111;	//PORTA Eingang
	DDRC = 0b00000000;	//PORTC Ausgang
	DDRD |= (1<<PD3);	//PD3 Eingang
	
	PORTA = 0b11111111;	//PORTA Pullup
	PORTC = 0b11111111;	//PORTC Einschalten
	PORTD |= (1<<PD3);	//PD3 Pullup
	
	
	prio_active = true;
	_delay_ms(1000);
}


//------------------------------------
//Hier wird die Zeit gezaehlt (Tick 1ms)
void setCS(void)
//------------------------------------
{
	for(int i = 0; i < 8; i++)
	{
		if (!(PINC & (1 << i))) { //PIN abfragen
			PORTA |= (1 << i);
			_delay_ms(100);
			PORTA &=~(1 << i);
			_delay_ms(5);
			} else {
			PORTA &=~(1 << i);
			_delay_ms(2);
		}
	}
	_delay_ms(100);
}



//------------------------------------
//MAIN SCHLEIFE
int main(void)
//------------------------------------
{
	//setupPCB();
	
	DDRA = 0b11111111;	//PORTA Eingang
	DDRC = 0b00000000;	//PORTC Ausgang
	DDRD |= (1<<PD3);	//PD3 Eingang
	
	PORTA = 0b11111111;	//PORTA Pullup
	PORTC = 0b11111111;	//PORTC Einschalten
	PORTD |= (1<<PD3);	//PD3 Pullup
	
	prio_active = true;
	_delay_ms(1000);
	
	
	while (1)
	{
		if (!(PIND & (1 << PD3)) && !(prio_active)) {
			prio_active = true;
			_delay_ms(10);
			while (!(PIND & (1 << PD3))) {
				_delay_ms(5);
			}
		} else if (prio_active) {
			prio_active = false;
			
			//setCS();
			
			for(int i = 0; i < 8; i++)
			{
				if (!(PINC & (1 << i))) { //PIN abfragen
					PORTA |= (1 << i);
					_delay_ms(100);
					PORTA &=~(1 << i);
					_delay_ms(5);
					} else {
					PORTA &=~(1 << i);
					_delay_ms(2);
				}
			}
			_delay_ms(100);
		}
	}
}