As maniau kad ten kokia mikroschema ta Å¡yna todel ir buvo kile klausimu del jos. Idedu tos programos koda kad padetumete isanalizuoti kur kas jungiasi prie mikrokontrolerio:

 #include <90s2313.h> 
#include     
int vol, bass, treble;
void i2c(int data2); 
void i2c_st(void);
void main(void) 
{      
DDRB=0x80;
DDRD=0x03;  
GIMSK=0x00;
TIMSK=0x02; 
TCCR0=0x05;
TCNT0=0x00;
SREG=0x80;    
i2c_st(); 
i2c(0x88);
i2c(0x5C);
i2c(0xE0);
i2c(0xC0); 
i2c(0xA0); 
i2c(0x80);
vol = 0x32; i2c(vol);
bass = 0x6F; i2c(bass);
treble = 0x7F; i2c(treble);  
while(1);
}


interrupt [TIM0_OVF] void timer0_overflow(void)

{   

TCNT0=0x00;

if (PINB.0 == 0) 

	{ 

	if (vol < 0x3F) { vol++; i2c(vol); delay_ms(100); }; 

	};

if (PINB.1 == 0) 

	{ 

	if (vol > 0x00) { vol--; i2c(vol); delay_ms(100); };

	};

if (PINB.2 == 0) 

	{ 

	if (bass == 0x67) { bass=0x6F; delay_ms(200); };

	if (bass > 0x68 & bass <= 0x6F) { bass--; i2c(bass); delay_ms(200); };

	if (bass < 0x67 & bass >= 0x60) { bass++; i2c(bass); delay_ms(200); };

	};

if (PINB.3 == 0) 

	{ 

	if (bass == 0x6F) { bass=0x67; delay_ms(200); };

	if (bass >= 0x68 & bass < 0x6F) { bass++; i2c(bass); delay_ms(200); };

	if (bass > 0x60 & bass <= 0x67) { bass--; i2c(bass); delay_ms(200); };

	};

if (PINB.4 == 0) 

	{ 

	if (treble == 0x77) { treble=0x7F; delay_ms(200); };

	if (treble > 0x78 & treble <= 0x7F) { treble--; i2c(treble); delay_ms(200); };

	if (treble < 0x77 & treble >= 0x70) { treble++; i2c(treble); delay_ms(200); };

	};

if (PINB.5 == 0) 

	{ 

	if (treble == 0x7F) { treble=0x77; delay_ms(200); };

	if (treble >= 0x78 & treble < 0x7F) { treble++; i2c(treble); delay_ms(200); };

	if (treble > 0x70 & treble <= 0x77) { treble--; i2c(treble); delay_ms(200); };

	};

}            

void i2c(int data2)

{                  

// Declaration of Variables    

  

  int  i; 

  char dta[9]={0,0,0,0,0,0,0,0,0};

  char bin[10]={0x00,0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80,0x89};            

  

// Int to BINARY conversion algorythm

  

  for(i=0;i<10;i++)

  {

    if (data2
    {           

      dta[i-1]=1;

      data2=data2-bin[i-1];

      i=0;

    }  

    else if (data2 == bin[i])  

    {

      dta[i]=1;

      i=20;

    }

  }             

                        

// I2C sending procedure

  

  for (i=8;i>0;i--)

  {  

    PORTD.1=0;

    PORTD.0=dta[i];       

    delay_us(50);

    PORTD.1=1;

    delay_us(50);   

    PORTD.1=0;

  }       

  

// Waiting for acknowledgement

  

  PORTD.0=1;          

  delay_us(25);   

  PORTD.1=1;

  delay_us(50);

  PORTD.1=0;

  delay_us(50);

  PORTD.0=0;

  delay_ms(1);

}          

// I2C Start Condition

void i2c_st(void)

{

PORTD.0 = 1;

PORTD.1 = 1;

delay_ms(1);

PORTD.0 = 0;

delay_ms(1);

}  

Kaip supratau is programos tai i audioproca siunciami duomenys per PORTD0 ir per PORTD1. O mygtukai jungiasi prie PORTB0, PORTB1, PORTB2, PORTB3, PORTB4, PORTB5. Ar bent kiek pasakiau tiesos ar ne?