Форум РадиоКот

Код: Выделить всё

#define F_CPU 10000000 //fuse LOW=0x7a
#include <avr/interrupt.h>
#include <util/delay.h>
#define BitIsClear(reg,bit) ((reg&(1<<bit)) ==0)

volatile uint8_t pwm1; // первый канал


ISR(TIMER0_COMPA_vect)
{
   static uint8_t counter;
   
   counter++;
   if(counter < pwm1){
      // включаем канал 1
      PORTB |= (1<<PB0);
      } else {
      // выключаем канал 1
      PORTB &=~(1<<PB0); 
   }
}

ISR(INT1_vect){
   if(--pwm1 == 255) pwm1=0;
}

ISR(INT0_vect){
   if(++pwm1 == 0) pwm1=255;
}


int main(void)
{
// Crystal Oscillator division factor: 1

CLKPR=(1<<CLKPCE);
CLKPR=(0<<CLKPCE) | (0<<CLKPS3) | (0<<CLKPS2) | (0<<CLKPS1) | (0<<CLKPS0);

// Input/Output Ports initialization
// Port A initialization
// Function: Bit2=In Bit1=In Bit0=In 
DDRA=(0<<DDRA2) | (0<<DDRA1) | (0<<DDRA0);
// State: Bit2=T Bit1=T Bit0=T 
PORTA=(0<<PORTA2) | (0<<PORTA1) | (0<<PORTA0);

// Port B initialization
// Function: Bit7=In Bit6=In Bit5=In Bit4=In Bit3=In Bit2=Out Bit1=Out Bit0=Out 
DDRB=(0<<DDB7) | (0<<DDB6) | (0<<DDB5) | (0<<DDB4) | (0<<DDB3) | (1<<DDB2) | (1<<DDB1) | (1<<DDB0);
// State: Bit7=T Bit6=T Bit5=T Bit4=T Bit3=T Bit2=0 Bit1=0 Bit0=0 
PORTB=(0<<PORTB7) | (0<<PORTB6) | (0<<PORTB5) | (0<<PORTB4) | (0<<PORTB3) | (0<<PORTB2) | (0<<PORTB1) | (0<<PORTB0);

// Port D initialization
// Function: Bit6=In Bit5=In Bit4=In Bit3=In Bit2=In Bit1=In Bit0=In 
DDRD=(0<<DDD6) | (0<<DDD5) | (0<<DDD4) | (0<<DDD3) | (0<<DDD2) | (0<<DDD1) | (0<<DDD0);
// State: Bit6=T Bit5=T Bit4=T Bit3=P Bit2=P Bit1=T Bit0=T 
PORTD=(0<<PORTD6) | (0<<PORTD5) | (0<<PORTD4) | (1<<PORTD3) | (1<<PORTD2) | (0<<PORTD1) | (0<<PORTD0);

// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: 1000,000 kHz
// Mode: CTC top=OCR0A
// OC0A output: Disconnected
// OC0B output: Disconnected
// Timer Period: 1 us
TCCR0A=(0<<COM0A1) | (0<<COM0A0) | (0<<COM0B1) | (0<<COM0B0) | (1<<WGM01) | (0<<WGM00);
TCCR0B=(0<<WGM02) | (0<<CS02) | (0<<CS01) | (1<<CS00);
TCNT0=0x00;
OCR0A=0x00;
OCR0B=0x00;

// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: Timer1 Stopped
// Mode: Normal top=0xFFFF
// OC1A output: Disconnected
// OC1B output: Disconnected
// Noise Canceler: Off
// Input Capture on Falling Edge
// Timer1 Overflow Interrupt: Off
// Input Capture Interrupt: Off
// Compare A Match Interrupt: Off
// Compare B Match Interrupt: Off
TCCR1A=(0<<COM1A1) | (0<<COM1A0) | (0<<COM1B1) | (0<<COM1B0) | (0<<WGM11) | (0<<WGM10);
TCCR1B=(0<<ICNC1) | (0<<ICES1) | (0<<WGM13) | (0<<WGM12) | (0<<CS12) | (0<<CS11) | (0<<CS10);
TCNT1H=0x00;
TCNT1L=0x00;
ICR1H=0x00;
ICR1L=0x00;
OCR1AH=0x00;
OCR1AL=0x00;
OCR1BH=0x00;
OCR1BL=0x00;

// Timer(s)/Counter(s) Interrupt(s) initialization
TIMSK=(0<<TOIE1) | (0<<OCIE1A) | (0<<OCIE1B) | (0<<ICIE1) | (0<<OCIE0B) | (0<<TOIE0) | (1<<OCIE0A);

// External Interrupt(s) initialization
// INT0: On
// INT0 Mode: Low level
// INT1: On
// INT1 Mode: Low level
// Interrupt on any change on pins PCINT0-7: Off
GIMSK=(1<<INT1) | (1<<INT0) | (0<<PCIE);
MCUCR=(0<<ISC11) | (0<<ISC10) | (0<<ISC01) | (0<<ISC00);
EIFR=(1<<INTF1) | (1<<INTF0) | (0<<PCIF);

// USI initialization
// Mode: Disabled
// Clock source: Register & Counter=no clk.
// USI Counter Overflow Interrupt: Off
USICR=(0<<USISIE) | (0<<USIOIE) | (0<<USIWM1) | (0<<USIWM0) | (0<<USICS1) | (0<<USICS0) | (0<<USICLK) | (0<<USITC);

// USART initialization
// USART disabled
UCSRB=(0<<RXCIE) | (0<<TXCIE) | (0<<UDRIE) | (0<<RXEN) | (0<<TXEN) | (0<<UCSZ2) | (0<<RXB8) | (0<<TXB8);

// Analog Comparator initialization
// Analog Comparator: Off
// The Analog Comparator's positive input is
// connected to the AIN0 pin
// The Analog Comparator's negative input is
// connected to the AIN1 pin
ACSR=(1<<ACD) | (0<<ACBG) | (0<<ACO) | (0<<ACI) | (0<<ACIE) | (0<<ACIC) | (0<<ACIS1) | (0<<ACIS0);
// Digital input buffer on AIN0: On
// Digital input buffer on AIN1: On
DIDR=(0<<AIN0D) | (0<<AIN1D);
   sei();               // разрешить прерывания

   while (1)       //бесконечная шарманка
   {

   }

}

Код: Выделить всё

#define F_CPU 10000000 //fuse LOW=0x7a
#include <avr/interrupt.h>
#include <util/delay.h>

volatile uint8_t pwm0=0; // первый канал
volatile uint8_t pwm1=0; // второй канал
volatile uint8_t pwm2=0; // третий канал

volatile uint8_t chanel = 0;

#define max_chim 25	// 0-255 диапазон значений, чем больше разрешение шим тем меньше частота шим

ISR(TIMER0_COMPA_vect)
{
   static uint8_t counter;
  
   if (++counter==max_chim) { counter=0; }
   if(counter < pwm0){
      // включаем канал 0
      PORTB |= (1<<PB0);
      } else {
      // выключаем канал 0
      PORTB &=~(1<<PB0); 
   }
   if(counter < pwm1){
      // включаем канал 1
      PORTB |= (1<<PB1);
      } else {
      // выключаем канал 1
      PORTB &=~(1<<PB1); 
   }  
   if(counter < pwm2){
      // включаем канал 2
      PORTB |= (1<<PB2);
      } else {
      // выключаем канал 2
      PORTB &=~(1<<PB2); 
   }  
   
}

ISR(INT1_vect){
   if (chanel == 0) if(--pwm0 > max_chim) pwm0=0;
   if (chanel == 1) if(--pwm1 > max_chim) pwm1=0;
   if (chanel == 2) if(--pwm2 > max_chim) pwm2=0;   
}

ISR(INT0_vect){
   if (chanel == 0) if(++pwm0 > max_chim) pwm0=max_chim;
   if (chanel == 1) if(++pwm1 > max_chim) pwm1=max_chim;
   if (chanel == 2) if(++pwm2 > max_chim) pwm2=max_chim;   
}


int main(void)
{
// Crystal Oscillator division factor: 1

CLKPR=(1<<CLKPCE);
CLKPR=(0<<CLKPCE) | (0<<CLKPS3) | (0<<CLKPS2) | (0<<CLKPS1) | (0<<CLKPS0);

// Input/Output Ports initialization
// Port A initialization
// Function: Bit2=In Bit1=In Bit0=In 
DDRA=(0<<DDRA2) | (0<<DDRA1) | (0<<DDRA0);
// State: Bit2=T Bit1=T Bit0=T 
PORTA=(0<<PORTA2) | (0<<PORTA1) | (0<<PORTA0);

// Port B initialization
// Function: Bit7=In Bit6=In Bit5=In Bit4=In Bit3=In Bit2=Out Bit1=Out Bit0=Out 
DDRB=(0<<DDB7) | (0<<DDB6) | (0<<DDB5) | (0<<DDB4) | (0<<DDB3) | (1<<DDB2) | (1<<DDB1) | (1<<DDB0);
// State: Bit7=T Bit6=T Bit5=T Bit4=T Bit3=T Bit2=0 Bit1=0 Bit0=0 
PORTB=(0<<PORTB7) | (0<<PORTB6) | (0<<PORTB5) | (0<<PORTB4) | (0<<PORTB3) | (0<<PORTB2) | (0<<PORTB1) | (0<<PORTB0);

// Port D initialization
// Function: Bit6=In Bit5=In Bit4=In Bit3=In Bit2=In Bit1=In Bit0=In 
DDRD=(0<<DDD6) | (0<<DDD5) | (0<<DDD4) | (0<<DDD3) | (0<<DDD2) | (0<<DDD1) | (0<<DDD0);
// State: Bit6=T Bit5=T Bit4=T Bit3=P Bit2=P Bit1=T Bit0=T 
PORTD=(0<<PORTD6) | (0<<PORTD5) | (0<<PORTD4) | (1<<PORTD3) | (1<<PORTD2) | (0<<PORTD1) | (1<<PORTD0);

// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: 1000,000 kHz
// Mode: CTC top=OCR0A
// OC0A output: Disconnected
// OC0B output: Disconnected
// Timer Period: 0,1 ms
TCCR0A=(0<<COM0A1) | (0<<COM0A0) | (0<<COM0B1) | (0<<COM0B0) | (1<<WGM01) | (0<<WGM00);
TCCR0B=(0<<WGM02) | (0<<CS02) | (0<<CS01) | (1<<CS00);
TCNT0=0x00;
OCR0A=0x63;
OCR0B=0x00;

// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: Timer1 Stopped
// Mode: Normal top=0xFFFF
// OC1A output: Disconnected
// OC1B output: Disconnected
// Noise Canceler: Off
// Input Capture on Falling Edge
// Timer1 Overflow Interrupt: Off
// Input Capture Interrupt: Off
// Compare A Match Interrupt: Off
// Compare B Match Interrupt: Off
TCCR1A=(0<<COM1A1) | (0<<COM1A0) | (0<<COM1B1) | (0<<COM1B0) | (0<<WGM11) | (0<<WGM10);
TCCR1B=(0<<ICNC1) | (0<<ICES1) | (0<<WGM13) | (0<<WGM12) | (0<<CS12) | (0<<CS11) | (0<<CS10);
TCNT1H=0x00;
TCNT1L=0x00;
ICR1H=0x00;
ICR1L=0x00;
OCR1AH=0x00;
OCR1AL=0x00;
OCR1BH=0x00;
OCR1BL=0x00;

// Timer(s)/Counter(s) Interrupt(s) initialization
TIMSK=(0<<TOIE1) | (0<<OCIE1A) | (0<<OCIE1B) | (0<<ICIE1) | (0<<OCIE0B) | (0<<TOIE0) | (1<<OCIE0A);

// External Interrupt(s) initialization
// INT0: On
// INT0 Mode: Low level
// INT1: On
// INT1 Mode: Low level
// Interrupt on any change on pins PCINT0-7: Off
GIMSK=(1<<INT1) | (1<<INT0) | (0<<PCIE);
MCUCR=(0<<ISC11) | (0<<ISC10) | (0<<ISC01) | (0<<ISC00);
EIFR=(1<<INTF1) | (1<<INTF0) | (0<<PCIF);

// USI initialization
// Mode: Disabled
// Clock source: Register & Counter=no clk.
// USI Counter Overflow Interrupt: Off
USICR=(0<<USISIE) | (0<<USIOIE) | (0<<USIWM1) | (0<<USIWM0) | (0<<USICS1) | (0<<USICS0) | (0<<USICLK) | (0<<USITC);

// USART initialization
// USART disabled
UCSRB=(0<<RXCIE) | (0<<TXCIE) | (0<<UDRIE) | (0<<RXEN) | (0<<TXEN) | (0<<UCSZ2) | (0<<RXB8) | (0<<TXB8);

// Analog Comparator initialization
// Analog Comparator: Off
// The Analog Comparator's positive input is
// connected to the AIN0 pin
// The Analog Comparator's negative input is
// connected to the AIN1 pin
ACSR=(1<<ACD) | (0<<ACBG) | (0<<ACO) | (0<<ACI) | (0<<ACIE) | (0<<ACIC) | (0<<ACIS1) | (0<<ACIS0);
// Digital input buffer on AIN0: On
// Digital input buffer on AIN1: On
DIDR=(0<<AIN0D) | (0<<AIN1D);
   sei();               // разрешить прерывания

   while (1)       //бесконечная шарманка
   {
    if ((PIND & (1<<PD1)) == 0) {
    _delay_ms (5);
     if ((PIND & (1<<PD1)) == 0) {
     _delay_ms (5); 
      
	if(++chanel > 2) chanel=0;
	do { } while ((PIND & (1<<PD1)) == 0);   
      }
    }
   }
   
}