#include <mega16.h>

// Alphanumeric LCD Module functions
#asm
   .equ __lcd_port=0x12
#endasm
#include <lcd.h>

#define ADC_VREF_TYPE 0x00
// Read the AD conversion result
unsigned int read_adc(unsigned char adc_input)
{ 

ADMUX=adc_input|ADC_VREF_TYPE;
// Start the AD conversion
ADCSRA|=0x40;
// Wait for the AD conversion to complete
while ((ADCSRA & 0x10)==0);
ADCSRA|=0x10;
return ADCW;
}

// Declare your global variables here
int i,t_ein,t_aus,counter,wert;

void main(void)
{
// Declare your local variables here

// Input/Output Ports initialization
// Port A initialization
// Func0=In Func1=In Func2=In Func3=In Func4=In Func5=In Func6=In Func7=In 
// State0=T State1=T State2=T State3=T State4=T State5=T State6=T State7=T 
PORTA=0x00;
DDRA=0x00;

// Port B initialization
// Func0=In Func1=In Func2=In Func3=In Func4=In Func5=In Func6=In Func7=In 
// State0=T State1=T State2=T State3=T State4=T State5=T State6=T State7=T 
PORTB=0x00;
DDRB=0x00;

// Port C initialization
// Func0=Out Func1=Out Func2=Out Func3=Out Func4=Out Func5=Out Func6=Out Func7=Out 
// State0=0 State1=0 State2=0 State3=0 State4=0 State5=0 State6=0 State7=0 
PORTC=0x00;
DDRC=0xFF;

// Port D initialization
// Func0=In Func1=In Func2=In Func3=In Func4=In Func5=In Func6=In Func7=In 
// State0=T State1=T State2=T State3=T State4=T State5=T State6=T State7=T 
PORTD=0x00;
DDRD=0x00;

// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: Timer 0 Stopped
// Mode: Normal top=FFh
// OC0 output: Disconnected
TCCR0=0x00;
TCNT0=0x00;
OCR0=0x00;

// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: Timer 1 Stopped
// Mode: Normal top=FFFFh
// OC1A output: Discon.
// OC1B output: Discon.
// Noise Canceler: Off
// Input Capture on Falling Edge
TCCR1A=0x00;
TCCR1B=0x00;
TCNT1H=0x00;
TCNT1L=0x00;
OCR1AH=0x00;
OCR1AL=0x00;
OCR1BH=0x00;
OCR1BL=0x00;

// Timer/Counter 2 initialization
// Clock source: System Clock
// Clock value: Timer 2 Stopped
// Mode: Normal top=FFh
// OC2 output: Disconnected
ASSR=0x00;
TCCR2=0x00;
TCNT2=0x00;
OCR2=0x00;

// External Interrupt(s) initialization
// INT0: Off
// INT1: Off
// INT2: Off
GICR|=0x00;
MCUCR=0x00;
MCUCSR=0x00;

// Timer(s)/Counter(s) Interrupt(s) initialization
TIMSK=0x00;

// Analog Comparator initialization
// Analog Comparator: Off
// Analog Comparator Input Capture by Timer/Counter 1: Off
// Analog Comparator Output: Off
ACSR=0x80;
SFIOR=0x00;

// ADC initialization
// ADC Clock frequency: 135,781 kHz
// ADC Voltage Reference: AREF pin
// ADC High Speed Mode: Off
// ADC Auto Trigger Source: None
ADMUX=ADC_VREF_TYPE;
ADCSRA=0x86;
SFIOR&=0xEF;

// LCD module initialization
//lcd_init(16);

t_ein = 500;
t_aus = 500;
counter = 0;
PORTC.0=1;

wert=read_adc(0);
while (1)
      {
      	// Place your code here
 	   PORTC.0 = 0;       
      	for (i=0;i<t_ein;i++);

     	   PORTC.0 = 1;
      	for (i=0;i<t_aus;i++);
      
      	counter++;
      
        if (counter>=10)
      	{
      		counter = 0;
      		if(t_ein<1000)
      		{
      			t_ein++;
      			t_aus--;
      		}
      		else
      		{
      			t_ein=0;
      	       		t_aus=1000;
      		}
    	  }
	}
}