#ifndef F_CPU
#define F_CPU 8000000UL
#endif

#include <AVR/IO.h>
#include <AVR/interrupt.h>
#include <math.h>
#include <util/delay.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>

#define BAUD 9600
#define ubrr 51
const double pi = 3.14159265358979323846;
int i=1,contor_led,u=0;
volatile int j=1;
volatile long suma=0, suma1=0, suma2=0, vit=0;
//float y,z;
unsigned char r,c;
char buff[200];


void initserial(void){
SREG=SREG&127;
UCSR0B=(1<<RXEN0)|(1<<TXEN0);//enable transmiter and reciever
UBRR0H=(unsigned char) (ubrr>>8);//set transfer rate
UBRR0L=(unsigned char) ubrr ;
UCSR0C=0x86;//8 data bit+1 stop data
UCSR0B=UCSR0B|192;//enable USART interupt TXCIE/RXCIE

//UCSRA=UCSRA|128;//activare recieve complete interupt
SREG=SREG|128;
}

int prints(char *string)
{

   int count =0;
   while ((string[count]) != '\0')
   {
      while ( !( UCSR0A & (1<<UDRE0)) );  // Wait for empty transmit buffer
      UDR0 = (char)string[count++];

   }
   //TxByte('_');
    UCSR0A=UCSR0A & 32;
   return 0;

}



ISR (USART_TX_vect){

}


//****************** INTRERUPERE RECIEVE COMPLETE************
ISR (USART_RX_vect){
//ISR(USART_RXC_vect ){


 r=UDR0;
 OCR1A=r;
}
ISR(TIMER0_OVF_vect){
	 //TCNT0=5;

contor_led=contor_led+1;

if(contor_led>60)
{
	sprintf(buff,"%ld,%ld\r",suma2,vit);
				prints(buff);
contor_led=0;
}
}
int main(void)
{
 DDRD=DDRD|224; // pin 7,6,5 config ca iesiri
 DDRB=DDRB|6; //pin pb1, pb2 ca iesiri
 DDRC=DDRC|28;///pc2,pc3,pc4
 DDRD=DDRD|8;//pd3

 TCCR1A=TCCR1A|160; //OC1A si OC1B ca pwm
 TCCR1B=19;//setare frecventa clock timer 64 prescaler
 ICR1=1250;//setare frecventa pwm


//TCCR0A=(1<<WGM01);// Set CTC Bit
TCCR0B=5;
;
TIMSK0= TIMSK0|1;

 TCCR2A |= (1 << COM2B1);
    // set none-inverting mode
	TCCR2A |= (1 << WGM21) | (1 << WGM20);
    // set fast PWM Mode

    TCCR2B |= (1 << CS21);
    // set prescaler to 8 and starts PWM
 OCR2B = 0;
    // set PWM for 50% duty cycle
 initserial();

 SREG=SREG|128;

 OCR1A=50;
 //OCR1B=140;
sprintf(buff," Buna ziua\n");
				prints(buff);

ADMUX=1;
ADCSRA= ADCSRA | 128; //ADC enable

PORTD=PORTD|32;

		while(1)
		{
	TIMSK0= TIMSK0&254;

		ADMUX=0;
		suma=0;
		for(i=0;i<10;i++)
			{
			ADCSRA = ADCSRA | 64; // ADC start conversie
			_delay_us(100);
			suma=suma+ADC;
			_delay_ms(1);
			}
	suma=suma/10.0;


	ADMUX=1;
	suma1=0;
		for(i=0;i<10;i++)
			{
			ADCSRA = ADCSRA | 64; // ADC start conversie
			_delay_us(100);
			suma1=suma1+ADC;
			_delay_ms(1);
			}
	suma1=suma1/10.0;

	ADMUX=5;
		suma2=0;
		for(i=0;i<10;i++)
			{
			ADCSRA = ADCSRA | 64; // ADC start conversie
			_delay_us(100);
			suma2=suma2+ADC;
			_delay_ms(1);
			}
	suma2=suma2/10.0;
TIMSK0= TIMSK0|1;
//432 220
//if(suma>425)
vit=(suma1/4)*((suma-220)/212.0);
//vit=(suma1+4*suma-1732)/4;
if(vit>=255)
vit=255;
if(vit<=0)
vit=0;

if(suma>425)
PORTC=PORTC&227;
if(suma<420)
PORTC=PORTC|4;
if(suma<370)
PORTC=PORTC|8;
if(suma<310)
PORTC=PORTC|16;
	if(suma<250)
		{PORTC=PORTC|28;
		_delay_ms(100);
		PORTC=PORTC&227;
		_delay_ms(100);
}
	OCR2B=(int)vit;
	OCR1A=(int)vit*35/255.0+50;


	//	sprintf(buff," %ld, %ld %ld\n",suma,suma1,vit);
	//			prints(buff);
	//_delay_ms(2);
		}
return 0;
}