Compare Match Funktion beim STM32 für Soft-PWM

#include <avr/io.h>

#include <avr/interrupt.h>

#include <stdint.h>

#include <stdbool.h>

// Pin

#define PART_DDR (DDRB)  //legt outputs fest

#define PART_PORT (PORTB)  // high low der outputs

#define PART_PORTD (PORTD)

#define PART_DDRD (DDRD) 

//#define PART 0x30//(1<<5)  //bitshifting

int c=1;

volatile long counter = 0; 

byte PART=0x30;

byte PART1=0x30;

byte PART2=0x10;

volatile long multiDC = 3;

volatile long freq = (0x7cff)-0x1f3f-(multiDC*0x320)-1;

void init_application() {

// set PART to output and turn it off

PART_PORT &= ~PART;

PART_DDR |= PART;

// reset timer register

TCNT1 = 0x0000;

// set OCR1A register

//OCR1A = 0x1fe;

OCR1A = 0x1f3f;

// enable output compare match interrupt A

TIMSK1 |= (1<<OCIE1A);

// set precaler=1, Timerstep @ 16 MHz = 0,0625 us, 65535 Timersteps (2^16); 16000=1ms

TCCR1B =  _BV(CS10); 

// globally enable interrupts

sei();

}

//void init_application2() {

//// set PART to output and turn it off

//

//PART_PORTD &= ~PART;

//PART_DDRD |= PART;

//// reset timer register

//TCNT1 = 0x0000;

//// set OCR1A register

////OCR1A = 0x1fe;

//OCR1A = 0;

//// enable output compare match interrupt A

//TIMSK1 |= (1<<OCIE1A);

//// set precaler=1, Timerstep @ 16 MHz = 0,0625 us, 65535 Timersteps (2^16); 16000=1ms

//// |= (1<<CS10) (1<<CS12);

//TCCR1B = _BV(CS10); //_BV(WGM11) |_BV(WGM10) | _BV(CS10); 

//// globally enable interrupts

//sei();

//}

int main(void) {

init_application();

//init_application2();

for(;;) {

  }

}

// interrupt service routine for timer 1 compare match A

ISR(TIMER1_COMPA_vect) {

uint16_t current_OCR1A = OCR1A;

static bool PART_on = true;

            switch(c)  {  

             case 1:

                  PART=PART1;

                  PART_PORT |= PART;   // PORT= PORT OR PART

                  PART_PORTD |= PART;

                  OCR1A = current_OCR1A+0x1f3f;

                  c=2;                                  

              break;

              case 2:

                  if(PART_on) {

                  PART_PORTD = PART_PORT |= PART;   // PORT= PORT OR PART 

                   OCR1A = current_OCR1A+0xc8;        

                  }

                  else {

                  PART_PORTD =PART_PORT &= ~PART;  //PORT= PORT AND PART

                   OCR1A = current_OCR1A+0x258;

                  counter++;

                              if(counter==multiDC){ 

                              PART = PART2;   

                              PART_PORT &= ~PART;  //PORT= PORT AND PART   

                              }

                  }  

                  if(counter==multiDC){  

                  c=3;

                  }

              break;

              case 3:

                  PART_PORTD = PART_PORT &= ~PART;  //PORT= PORT AND PART

                  OCR1A =current_OCR1A+ freq;// 

                    c=1;

                    counter=0;

              break;

            }

PART_on = !PART_on; // toogle PART on every call of isr

}