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Код: Выделить всё

#include<avr/io.h>
#include<avr/interrupt.h>
#define F_CPU 1200000UL
#include<util/delay.h>
#include<avr/pgmspace.h>
#include<avr/sleep.h>


//Prototypes

//This function is called to switch on the LED at the 
//Required stage of PWM cycle
void abc(unsigned char a,unsigned char b,unsigned char c,unsigned char status);

//This function is used to initialise the new PWM cycle
void xyz(void);


volatile unsigned char e;
volatile unsigned char pwm[3]={0,8,8};
volatile unsigned char i=0;
volatile unsigned char k=0;
//PWM scale 0 - On 8 OFF
const unsigned char Blue[15] PROGMEM =  {0,8,8,0,0,8,0,6,2,3,6,1,4,5,7};
const unsigned char Red[15] PROGMEM =   {8,0,8,2,8,2,0,5,5,5,6,6,6,7,7};
const unsigned char Green[15] PROGMEM = {8,8,0,8,0,0,0,2,0,6,4,2,7,0,2};
volatile unsigned int counter =0;


int main(void)
{


   DDRB  &= ~((1<<3)|(1<<4)); //Switches and ADC
   PORTB |= (1<<3); //Switches
   PCMSK = 1<<PCINT3;//Configure PB3 as interrupt
   
   //ADC init
   
   ADMUX =  0b00100010; //ADC2,ADLAR,VCc
   ADCSRA = 0b10000010; //prescaled by 4
   
   //neglect first reading
   ADCSRA |= 1<<ADSC;
   while(ADCSRA&(1<<ADSC));//Wait
   i = ADCH;
   
   //Timer Initialisation
   TCCR0A = 0x00;
   TCCR0B = 0x02;//Prescaling
   TIMSK0 = 1<<TOIE0;//Overflow Interrupt Enabled
   sei();//Global Interrupts Enabled

   while(1)
   {
         
         
      i=0;
   
   
      ADCSRA |= 1<<ADSC;
      while(ADCSRA&(1<<ADSC));//Wait
      i = ADCH;
      
      
      
      i = i>>4;//Divide by 16
      if(i!=15)
      {
         pwm[0] = pgm_read_byte(&Blue[i]);
         pwm[1] = pgm_read_byte(&Red[i]);
         pwm[2] = pgm_read_byte(&Green[i]);
         counter = 0;
         k = 0;
      }
      _delay_ms(2);//Just a small delay
            
         
      
      if(!(PINB&(1<<3)))
      {
         _delay_ms(30);
         while(!(PINB&(1<<3))); //wait
         _delay_ms(30);
         
         
         TIMSK0 &= ~(1<<TOIE0);//Clear timer interrupt
         DDRB &=~(1<<0|1<<1|1<<2);
         GIFR |= 1<<PCIF;//Clear pending interrupt
         GIMSK |= 1<<PCIE;//Pin change interrupt enable
         MCUCR |= (1<<SE|1<<SM1);//Power down mode setting
         sleep_cpu(); //CPU halted till interrupt
         
      }
   
   }

   

}



ISR(TIM0_OVF_vect)
{
   
   
   DDRB &=~(1<<0|1<<1|1<<2);
   
   
   
   if(e==8)
   {
      e=0;
      xyz();
   }

   abc(pwm[0],pwm[1],pwm[2],e);
   DDRB |=(1<<0|1<<1|1<<2);
   e++;
   if(i==15)//Run mode
   {
      counter++;
      if(counter == 390)//500ms
      {
         counter = 0;
         if(k==14)
         k=0;
         else k++;
         pwm[0] = pgm_read_byte(&Blue[k]);
         pwm[1] = pgm_read_byte(&Red[k]);
         pwm[2] = pgm_read_byte(&Green[k]);
      }
   }
   
}

void xyz(void)
{
   
   PORTB |= (1<<0)|(1<<1)|(1<<2);
   
   
}


void abc(unsigned char a,unsigned char b,unsigned char c,unsigned char status)
{

   if((status==a))
   {
      PORTB&= ~(1<<0);
   }
   if((status==b))
   {
      PORTB&= ~(1<<1);
   }
   if((status==c))
   {
      PORTB&= ~(1<<2);
   }
   
}

ISR(PCINT0_vect)
{
   _delay_ms(30);
   while(!(PINB&(1<<3))); //wait
   _delay_ms(30);
   MCUCR = 0x00; //sleep disable
   GIMSK &= ~(1<<PCIE);//Pin change interrupt disable
   TIMSK0 = 1<<TOIE0;//Overflow Interrupt Enabled
         
         

}

Код: Выделить всё

//вектор прерывания по перполнению Т0
ISR(TIM0_OVF_vect)
{
   
   //перевод PB0, PB1, PB2 в состояние входов
   DDRB &=~(1<<0|1<<1|1<<2);
   
   
   //если e равно 8, обнуляем е и вызываем функцию
   //которая выставляет PB0, PB1, PB2 в 1
   if(e==8)
   {
      e=0;
      xyz();
   }

   //вызываем фукцию, которая выставляет 0 на
   //выводах PB0, PB1, PB2, в зависимости от
   //значения е
   abc(pwm[0],pwm[1],pwm[2],e);
   
   //перевод PB0, PB1, PB2 в состояние выходов
   DDRB |=(1<<0|1<<1|1<<2);
   
   //инкремент е
   e++;
   
   //дальше идет дополнительный режим работы,
   //когда значения на PB2, PB1, PB0 меняются
   //в цикле, он к вопросу не относится
   if(i==15)//Run mode
   {
      counter++;
      if(counter == 390)//500ms
      {
         counter = 0;
         if(k==14)
         k=0;
         else k++;
         pwm[0] = pgm_read_byte(&Blue[k]);
         pwm[1] = pgm_read_byte(&Red[k]);
         pwm[2] = pgm_read_byte(&Green[k]);
      }
   }
   
}

Код: Выделить всё

#include<avr/io.h>
#define F_CPU 1200000UL


int main(void)
{
  while(1)
  {	
	
        //объявляем PB0, PB1, PB2 входами
        DDRB &=~(1<<0|1<<1|1<<2);

        //на PB0, PB1, PB2 выставляем 0
        PORTB &= ~(0b00000111);
        //на PB0, PB1, PB2 выставляем 1
        PORTB |= 0b00000111;

        //объявляем PB0, PB1, PB2 выходами
        DDRB |=(1<<0|1<<1|1<<2);

  }
}