/*
 * RAF_2.c
 *
 * Created: 03.12.2015 11:51:24
 *  Author: rafael
 */ 


#define F_CPU 3686400
#include <avr/io.h>
#include <util/delay.h>
#include <stdbool.h>
#include <avr/interrupt.h>

// Ausgänge zuweisen

#define LED0_ON PORTC |= (1<<PC0)
#define LED0_OFF PORTC &= ~(1<<PC0)
#define LED1_ON PORTC |= (1<<PC1)
#define LED1_OFF PORTC &= ~(1<<PC1)
#define LED2_ON PORTC |= (1<<PC2)
#define LED2_OFF PORTC &= ~(1<<PC2)
#define LED3_ON PORTC |= (1<<PC3)
#define LED3_OFF PORTC &= ~(1<<PC3)
#define LED4_ON PORTC |= (1<<PC4)
#define LED4_OFF PORTC &= ~(1<<PC4)

#define taster0 (PIND & (1<<PD0))
#define taster1 (PIND & (1<<PD1))
#define taster2 (PIND & (1<<PD2))
#define taster3 (PIND & (1<<PD3))
#define taster4 (PIND & (1<<PD4))

bool frg0=false;
bool frg1=false;
bool frg2=false;
bool frg3=false;
bool frg4=false;

bool pwmstart0=false;
bool pwmstart1=false;
bool pwmstart2=false;
bool pwmstart3=false;
bool pwmstart4=false;

bool pwmstop0 = false;
bool pwmstop1 = false;
bool pwmstop2 = false;
bool pwmstop3 = false;
bool pwmstop4 = false;

bool pwmgest0 = false;
bool pwmgest1 = false;
bool pwmgest2 = false;
bool pwmgest3 = false;
bool pwmgest4 = false;


volatile unsigned char pwmcounter0=0, pwmlaufvar0=0;
volatile unsigned char pwmcounter1=0, pwmlaufvar1=0;
volatile unsigned char pwmcounter2=0, pwmlaufvar2=0;
volatile unsigned char pwmcounter3=0, pwmlaufvar3=0;
volatile unsigned char pwmcounter4=0, pwmlaufvar4=0;
 


/******************************************
       Timer 0 Interrupt AANFANG
******************************************/

ISR (TIMER0_OVF_vect)
{
	// Soft PWM für LED 0

		if (pwmcounter0<=pwmlaufvar0 && pwmstart0==true)
		{	
			pwmgest0=true;		// PWM läuft!			
			LED0_ON;				
		}
			else
			{
				LED0_OFF;
			}
			if (pwmcounter0>=255)
			{
				pwmcounter0=0;
			}
				else
				{
					pwmcounter0++;
				}
			if (pwmlaufvar0>=255)
			{
				pwmstop0 = true;
			}
				else
				{
					pwmstop0 = false;
				}	
}
/******************************************
           END of INTERRUPT
******************************************/



 int main(void)
{
	DDRC = 0xff;			// PORTC als Ausgang
	DDRB = 0xff;			// PORTC als Ausgang
	DDRD = 0x00;			// PORTD als Eingänge
	PORTD = 0xff;			// PORTD als Eingänge
	
	// Startuproutine - LED - Check
	
		_delay_ms(50);
		LED0_ON;
		_delay_ms(550);
		LED0_OFF;
		_delay_ms(50);
	
	/********************************************************************
	*      Timer Konfiguration                                          *
	********************************************************************/
	
	// Timer 0 SoftPWM initialisieren
	// Maske für Timer 0 -2 => Timer/Counter 0 Overflow Interrupt enable
	
	TIMSK |=(1<<TOIE0);
	
	// Vorteiler
			
	TCCR0 |= (0<<CS02) | (0<<CS01) | (1<<CS00);
	 
	// Set Interrupt enable => Interrupts zulassen
	
	sei();						

	// Hauptschleife
	while(1)
	{	
	
			// Freigaben für LED ON oder LED OFF
			// Taster 0
			
			if (taster0 && !(PINC & (1<<PC0)))  { frg0=true; }
			if (taster0 && pwmgest0==true)     { frg0=false;}	
				
			// Abfrage Taster 0	
			
			if (!taster0 && frg0==true)
			{
				_delay_ms(50);
				pwmstart0=true;		// PWM kann starten
				pwmlaufvar0=0;		// Laufvariable auf 0 setzen
				
			}
			if (!taster0 && frg0== false)
			{
				_delay_ms(50);
				pwmstart0=false;	// PWM- Routine wird gestoppt.
				pwmgest0=false;
			}		

						
			// Laufvariable für PWM
			
			if (pwmstop0 == false)
			{
				pwmlaufvar0++;
			}			

			_delay_ms(10);
		


		
	}
	return 0;
}